
From nobody Fri Oct 13 14:18:42 2017
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Date: Fri, 13 Oct 2017 14:18:40 -0700
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Subject: [Suit] suit - New Meeting Session Request for IETF 100
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A new meeting session request has just been submitted by Stephanie McCammon, on behalf of the suit working group.


---------------------------------------------------------
Working Group Name: Software Updates for Internet of Things
Area Name: Security Area
Session Requester: Stephanie McCammon

Number of Sessions: 1
Length of Session(s):  1.5 Hours
Number of Attendees: 100
Conflicts to Avoid: 
 First Priority:  sacm mile lamps acme tls ipsecme sipcore stir ipwave sipbrandy curdle anima
 Second Priority:  dispatch oauth saag ace uta tcpinc perc netmod
 Third Priority:  mtgvenue iasa20


People who must be present:
  Russ Housley
  Kathleen Moriarty
  David Waltermire

Resources Requested:

Special Requests:
  
---------------------------------------------------------


From nobody Fri Oct 20 07:00:05 2017
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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Date: Fri, 20 Oct 2017 09:59:17 -0400
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Subject: [Suit] Mailing list is operational and FUD archive has been transferred
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Hello,

This is just to let the participants know the mailing list is fully
operational now and all of the FUD archives have been transferred over
to this list.  Please let the chairs and me know if you have any
issues.

-- 

Best regards,
Kathleen


From nobody Fri Oct 20 07:22:02 2017
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From: Russ Housley <housley@vigilsec.com>
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Subject: [Suit] Call for Agenda Items
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The draft charter is here:
https://datatracker.ietf.org/doc/charter-ietf-suit/

The IESG has begun the charter approval process, so we want to conduct =
the session at IETF 100 with the assumption that the charter will be =
approved.  If that is not the case, then we will adjust the agenda to =
address any issues that come up in the chartering process.

Please let the chairs know if you would like to make a presentation.

Russ & Dave


From nobody Fri Oct 20 07:24:30 2017
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Russ Housley <housley@vigilsec.com>, "suit@ietf.org" <suit@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/7qopidkgPvP-qW7-Ez4PGSOtCYc>
Subject: Re: [Suit] Call for Agenda Items
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Hi Russ,

I would like to discuss the documents we had submitted earlier this year, n=
amely:
https://tools.ietf.org/html/draft-moran-fud-architecture-00
https://tools.ietf.org/html/draft-moran-fud-manifest-00

We will resubmit updated versions to the new group.

Ciao
Hannes

-----Original Message-----
From: Suit [mailto:suit-bounces@ietf.org] On Behalf Of Russ Housley
Sent: 20 October 2017 16:22
To: suit@ietf.org
Subject: [Suit] Call for Agenda Items

The draft charter is here:
https://datatracker.ietf.org/doc/charter-ietf-suit/

The IESG has begun the charter approval process, so we want to conduct the =
session at IETF 100 with the assumption that the charter will be approved. =
 If that is not the case, then we will adjust the agenda to address any iss=
ues that come up in the chartering process.

Please let the chairs know if you would like to make a presentation.

Russ & Dave

_______________________________________________
Suit mailing list
Suit@ietf.org
https://www.ietf.org/mailman/listinfo/suit
IMPORTANT NOTICE: The contents of this email and any attachments are confid=
ential and may also be privileged. If you are not the intended recipient, p=
lease notify the sender immediately and do not disclose the contents to any=
 other person, use it for any purpose, or store or copy the information in =
any medium. Thank you.


From nobody Fri Oct 20 17:27:46 2017
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From: "\"IETF Secretariat\"" <agenda@ietf.org>
To: <suit-chairs@ietf.org>, <smccammon@amsl.com>
Cc: Kathleen.Moriarty.ietf@gmail.com, suit@ietf.org
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Subject: [Suit] suit - Requested session has been scheduled for IETF 100
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Dear Stephanie McCammon,

The session(s) that you have requested have been scheduled.
Below is the scheduled session information followed by
the original request. 

suit Session 1 (1:30:00)
    Monday, Afternoon Session II 1550-1720
    Room Name: Canning size: 250
    ---------------------------------------------
    


Request Information:


---------------------------------------------------------
Working Group Name: Software Updates for Internet of Things
Area Name: Security Area
Session Requester: Stephanie McCammon

Number of Sessions: 1
Length of Session(s):  1.5 Hours
Number of Attendees: 100
Conflicts to Avoid: 
 First Priority: anima curdle sipbrandy ipwave stir sipcore ipsecme tls acme lamps mile sacm
 Second Priority: netmod perc tcpinc uta ace saag oauth dispatch
 Third Priority: iasa20 mtgvenue


People who must be present:
  David Waltermire
  Kathleen Moriarty
  Russ Housley

Resources Requested:

Special Requests:
  
---------------------------------------------------------


From nobody Sat Oct 21 00:35:30 2017
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From: Carsten Bormann <cabo@tzi.org>
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Subject: [Suit] Fwd: Constrained Node/Network Cluster @ IETF100: FINAL AGENDA
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> From: Carsten Bormann <cabo@tzi.org <mailto:cabo@tzi.org>>
> Subject: Constrained Node/Network Cluster @ IETF100: FINAL AGENDA
> Date: October 21, 2017 at 09:26:23 GMT+2
> To: fud@ietf.org <mailto:fud@ietf.org>, teep@ietf.org =
<mailto:teep@ietf.org>, din@irtf.org <mailto:din@irtf.org>
>=20
> Here is my usual eclectic condensed agenda based on the "FINAL" AGENDA
> for IETF100.  Remember that "FINAL" means this will be the basis for
> printed agenda sheets, there is still some potential for changes after
> that.
>=20
> The CBOR/SUIT conflict has been fixed, but now there is overlap
> between 6TISCH and SUIT.  ROLL vs. TEEP is a bit unfortunate, as is
> DINRG vs. LPWAN vs. DISPATCH.
>=20
> All times are SGT (UTC+0800).  (You can get pure UTC times on
> https://datatracker.ietf.org/meeting/agenda-utc =
<https://datatracker.ietf.org/meeting/agenda-utc>, for those who want to
> listen from remote.)
>=20
> Gr=C3=BC=C3=9Fe, Carsten
>=20
> FRIDAY, November 10, 2017
> -- Joint meeting of OCF and T2TRG @ OCF meeting venue
>=20
> SATURDAY/SUNDAY
> -- Hackathon (including various interops)
>=20
> MONDAY, November 13, 2017
>=20
> 0930-1200  Morning Session I
> Collyer 	ART	dispatch	Dispatch WG - 0930-1100 Joint =
with ARTAREA
> Collyer 	ART	httpbis	Hypertext Transfer Protocol WG - =
1100-1200
> Olivia  	INT ***	lpwan	IPv6 over Low Power Wide-Area Networks =
WG
> VIP A   	IRTF***	dinrg	Decentralized Internet Infrastructure =
Proposed RG
> Sophia  	OPS	anima	Autonomic Networking Integrated Model =
and Approach WG
>=20
> 1330-1530  Afternoon Session I
> Sophia  	ART ***	core	Constrained RESTful Environments WG
> Padang  	OPS	v6ops	IPv6 Operations WG
>=20
> 1550-1720  Afternoon Session II
> Bras Basah	INT ***	6tisch	IPv6 over the TSCH mode of IEEE =
802.15.4e WG
> Collyer 	INT	homenet	Home Networking WG
> Padang  	IRTF	maprg	Measurement and Analysis for Protocols
> Canning 	SEC ***	suit	Software Updates for Internet of Things =
BOF
>=20
> 1740-1840  Afternoon Session III
> Sophia  	INT	ipwave	IP Wireless Access in Vehicular =
Environments WG - 0930-1030
> Padang  	SEC	tls	Transport Layer Security WG
> Canning 	TSV	tsvwg	Transport Area Working Group WG
>=20
> TUESDAY, November 14, 2017
>=20
> 0930-1200  Morning Session I
> Collyer 	SEC ***	ace	Authentication and Authorization for =
Constrained Environments WG
> Olivia  	TSV	taps	Transport Services WG
>=20
> 1330-1530  Afternoon Session I
> Bras Basah	ART ***	core	Constrained RESTful Environments WG
> Canning 	INT	6man	IPv6 Maintenance WG
> VIP A   	SEC	tokbind	Token Binding WG
> Padang  	TSV	quic	QUIC WG
>=20
> 1550-1750  Afternoon Session II
> Padang  	IRTF***	t2trg	Thing-to-Thing
> Olivia  	RTG	bier	Bit Indexed Explicit Replication WG
> Sophia  	SEC	oauth	Web Authorization Protocol WG
>=20
> WEDNESDAY, November 15, 2017
>=20
> 0930-1200  Morning Session I
> Canning 	INT	dnssd	Extensions for Scalable DNS Service =
Discovery  WG
> Olivia  	INT ***	lwig	Light-Weight Implementation Guidance WG =
- 1100-1200
> VIP A   	IRTF	icnrg	Information-Centric Networking
> Collyer 	TSV	quic	QUIC WG
>=20
> 1330-1500  Afternoon Session I
> Bras Basah	ART	uta	Using TLS in Applications WG
> VIP A   	RTG ***	roll	Routing Over Low power and Lossy =
networks WG
> Collyer 	SEC ***	teep	Trusted Execution Environment =
Provisioning BOF
> Orchard 	TSV	rmcat	RTP Media Congestion Avoidance =
Techniques WG
>=20
> 1520-1650  Afternoon Session II
> Collyer 	INT	intarea	Internet Area Working Group WG
> VIP A   	IRTF	cfrg	Crypto Forum
> Orchard 	SEC	oauth	Web Authorization Protocol WG
>=20
> THURSDAY, November 16, 2017
>=20
> 0930-1200  Morning Session I
> Padang  	IRTF	irtfopen	IRTF Open Meeting
> Collyer 	OPS	v6ops	IPv6 Operations WG
> Sophia  	RTG	detnet	Deterministic Networking WG
> Canning 	SEC	tls	Transport Layer Security WG
>=20
> 1330-1530  Afternoon Session I
> Sophia  	INT ***	6lo	IPv6 over Networks of =
Resource-constrained Nodes WG
> Collyer 	IRTF	panrg	Path Aware Networking Proposed RG
> Padang  	SEC	saag	Security Area Open Meeting
>=20
> 1550-1750  Afternoon Session II
> Olivia  	ART ***	cbor	Concise Binary Object Representation =
Maintenance and Extensions WG
> VIP A   	ART	ice	Interactive Connectivity Establishment =
WG - 1550-1650
> Canning 	RTG	rtgarea	Routing Area Open Meeting
> Sophia  	SEC	acme	Automated Certificate Management =
Environment WG
>=20
> 1810-1910  Afternoon Session III
> VIP A   	SEC	curdle	CURves, Deprecating and a Little more =
Encryption WG
> Padang  	TSV	tsvarea	Transport Area Open Meeting
>=20
> FRIDAY, November 17, 2017
>=20
> 0930-1130  Morning Session I
> Canning 	ART	httpbis	Hypertext Transfer Protocol WG
> VIP A   	RTG	babel	Babel routing protocol WG
> Collyer 	TSV	tsvwg	Transport Area Working Group WG
>=20
>=20
>=20
>=20


--Apple-Mail=_DD4BD848-0498-4312-88E7-4CFDB1CAB297
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><div class=3D""><div><blockquote type=3D"cite" class=3D""><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px;" class=3D""><span style=3D"font-family: =
-webkit-system-font, Helvetica Neue, Helvetica, sans-serif; =
color:rgba(0, 0, 0, 1.0);" class=3D""><b class=3D"">From: =
</b></span><span style=3D"font-family: -webkit-system-font, Helvetica =
Neue, Helvetica, sans-serif;" class=3D"">Carsten Bormann &lt;<a =
href=3D"mailto:cabo@tzi.org" class=3D"">cabo@tzi.org</a>&gt;<br =
class=3D""></span></div><div style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px;" class=3D""><span =
style=3D"font-family: -webkit-system-font, Helvetica Neue, Helvetica, =
sans-serif; color:rgba(0, 0, 0, 1.0);" class=3D""><b class=3D"">Subject: =
</b></span><span style=3D"font-family: -webkit-system-font, Helvetica =
Neue, Helvetica, sans-serif;" class=3D""><b class=3D"">Constrained =
Node/Network Cluster @ IETF100: FINAL AGENDA</b><br =
class=3D""></span></div><div style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px;" class=3D""><span =
style=3D"font-family: -webkit-system-font, Helvetica Neue, Helvetica, =
sans-serif; color:rgba(0, 0, 0, 1.0);" class=3D""><b class=3D"">Date: =
</b></span><span style=3D"font-family: -webkit-system-font, Helvetica =
Neue, Helvetica, sans-serif;" class=3D"">October 21, 2017 at 09:26:23 =
GMT+2<br class=3D""></span></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px;" class=3D""><span=
 style=3D"font-family: -webkit-system-font, Helvetica Neue, Helvetica, =
sans-serif; color:rgba(0, 0, 0, 1.0);" class=3D""><b class=3D"">To: =
</b></span><span style=3D"font-family: -webkit-system-font, Helvetica =
Neue, Helvetica, sans-serif;" class=3D""><a href=3D"mailto:fud@ietf.org" =
class=3D"">fud@ietf.org</a>, <a href=3D"mailto:teep@ietf.org" =
class=3D"">teep@ietf.org</a>, <a href=3D"mailto:din@irtf.org" =
class=3D"">din@irtf.org</a><br class=3D""></span></div><br class=3D""><div=
 class=3D""><div class=3D"">Here is my usual eclectic condensed agenda =
based on the "FINAL" AGENDA<br class=3D"">for IETF100. &nbsp;Remember =
that "FINAL" means this will be the basis for<br class=3D"">printed =
agenda sheets, there is still some potential for changes after<br =
class=3D"">that.<br class=3D""><br class=3D"">The CBOR/SUIT conflict has =
been fixed, but now there is overlap<br class=3D"">between 6TISCH and =
SUIT. &nbsp;ROLL vs. TEEP is a bit unfortunate, as is<br class=3D"">DINRG =
vs. LPWAN vs. DISPATCH.<br class=3D""><br class=3D"">All times are SGT =
(UTC+0800). &nbsp;(You can get pure UTC times on<br class=3D""><a =
href=3D"https://datatracker.ietf.org/meeting/agenda-utc" =
class=3D"">https://datatracker.ietf.org/meeting/agenda-utc</a>, for =
those who want to<br class=3D"">listen from remote.)<br class=3D""><br =
class=3D"">Gr=C3=BC=C3=9Fe, Carsten<br class=3D""><br class=3D"">FRIDAY, =
November 10, 2017<br class=3D"">-- Joint meeting of OCF and T2TRG @ OCF =
meeting venue<br class=3D""><br class=3D"">SATURDAY/SUNDAY<br =
class=3D"">-- Hackathon (including various interops)<br class=3D""><br =
class=3D"">MONDAY, November 13, 2017<br class=3D""><br =
class=3D"">0930-1200 &nbsp;Morning Session I<br class=3D"">Collyer <span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>ART<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>dispatch<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Dispatch WG - 0930-1100 Joint with ARTAREA<br class=3D"">Collyer =
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>ART<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>httpbis<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Hypertext Transfer Protocol WG - 1100-1200<br class=3D"">Olivia =
&nbsp;<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>INT ***<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>lpwan<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>IPv6 over Low Power Wide-Area Networks WG<br class=3D"">VIP A =
&nbsp;&nbsp;<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>IRTF***<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>dinrg<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Decentralized Internet Infrastructure Proposed RG<br =
class=3D"">Sophia &nbsp;<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>OPS<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>anima<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span>Autonomic Networking Integrated =
Model and Approach WG<br class=3D""><br class=3D"">1330-1530 =
&nbsp;Afternoon Session I<br class=3D"">Sophia &nbsp;<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>ART =
***<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>core<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Constrained RESTful Environments WG<br class=3D"">Padang =
&nbsp;<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>OPS<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>v6ops<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>IPv6 Operations WG<br class=3D""><br class=3D"">1550-1720 =
&nbsp;Afternoon Session II<br class=3D"">Bras Basah<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>INT =
***<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>6tisch<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>IPv6 over the TSCH mode of IEEE 802.15.4e WG<br class=3D"">Collyer =
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>INT<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>homenet<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Home Networking WG<br class=3D"">Padang &nbsp;<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>IRTF<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>maprg<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Measurement and Analysis for Protocols<br class=3D"">Canning =
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>SEC ***<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>suit<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Software Updates for Internet of Things BOF<br class=3D""><br =
class=3D"">1740-1840 &nbsp;Afternoon Session III<br class=3D"">Sophia =
&nbsp;<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>INT<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>ipwave<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>IP Wireless Access in Vehicular Environments WG - 0930-1030<br =
class=3D"">Padang &nbsp;<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>SEC<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>tls<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>Transport Layer Security WG<br =
class=3D"">Canning <span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>TSV<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>tsvwg<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span>Transport Area Working Group =
WG<br class=3D""><br class=3D"">TUESDAY, November 14, 2017<br =
class=3D""><br class=3D"">0930-1200 &nbsp;Morning Session I<br =
class=3D"">Collyer <span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>SEC ***<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>ace<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Authentication and Authorization for Constrained Environments =
WG<br class=3D"">Olivia &nbsp;<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>TSV<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>taps<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>Transport Services WG<br =
class=3D""><br class=3D"">1330-1530 &nbsp;Afternoon Session I<br =
class=3D"">Bras Basah<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>ART ***<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>core<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Constrained RESTful Environments WG<br class=3D"">Canning <span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>INT<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>6man<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>IPv6 =
Maintenance WG<br class=3D"">VIP A &nbsp;&nbsp;<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>SEC<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>tokbind<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Token Binding WG<br class=3D"">Padang &nbsp;<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>TSV<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>quic<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>QUIC =
WG<br class=3D""><br class=3D"">1550-1750 &nbsp;Afternoon Session II<br =
class=3D"">Padang &nbsp;<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>IRTF***<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>t2trg<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Thing-to-Thing<br class=3D"">Olivia &nbsp;<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>RTG<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>bier<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>Bit =
Indexed Explicit Replication WG<br class=3D"">Sophia &nbsp;<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>SEC<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>oauth<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Web Authorization Protocol WG<br class=3D""><br =
class=3D"">WEDNESDAY, November 15, 2017<br class=3D""><br =
class=3D"">0930-1200 &nbsp;Morning Session I<br class=3D"">Canning <span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>INT<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>dnssd<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Extensions for Scalable DNS Service Discovery &nbsp;WG<br =
class=3D"">Olivia &nbsp;<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>INT ***<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>lwig<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Light-Weight Implementation Guidance WG - 1100-1200<br =
class=3D"">VIP A &nbsp;&nbsp;<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>IRTF<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>icnrg<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span>Information-Centric Networking<br =
class=3D"">Collyer <span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>TSV<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>quic<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>QUIC WG<br class=3D""><br =
class=3D"">1330-1500 &nbsp;Afternoon Session I<br class=3D"">Bras =
Basah<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>ART<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>uta<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Using TLS in Applications WG<br class=3D"">VIP A =
&nbsp;&nbsp;<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>RTG ***<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>roll<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Routing Over Low power and Lossy networks WG<br class=3D"">Collyer =
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>SEC ***<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>teep<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Trusted Execution Environment Provisioning BOF<br =
class=3D"">Orchard <span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>TSV<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>rmcat<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span>RTP Media Congestion Avoidance =
Techniques WG<br class=3D""><br class=3D"">1520-1650 &nbsp;Afternoon =
Session II<br class=3D"">Collyer <span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>INT<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>intarea<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>Internet =
Area Working Group WG<br class=3D"">VIP A &nbsp;&nbsp;<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>IRTF<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>cfrg<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>Crypto =
Forum<br class=3D"">Orchard <span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>SEC<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>oauth<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span>Web Authorization Protocol WG<br =
class=3D""><br class=3D"">THURSDAY, November 16, 2017<br class=3D""><br =
class=3D"">0930-1200 &nbsp;Morning Session I<br class=3D"">Padang =
&nbsp;<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>IRTF<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>irtfopen<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>IRTF Open Meeting<br class=3D"">Collyer <span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>OPS<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>v6ops<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>IPv6 Operations WG<br class=3D"">Sophia &nbsp;<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>RTG<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>detnet<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Deterministic Networking WG<br class=3D"">Canning <span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>SEC<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>tls<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>Transport =
Layer Security WG<br class=3D""><br class=3D"">1330-1530 &nbsp;Afternoon =
Session I<br class=3D"">Sophia &nbsp;<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>INT ***<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>6lo<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>IPv6 over =
Networks of Resource-constrained Nodes WG<br class=3D"">Collyer <span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>IRTF<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>panrg<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Path Aware Networking Proposed RG<br class=3D"">Padang =
&nbsp;<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>SEC<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>saag<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Security Area Open Meeting<br class=3D""><br class=3D"">1550-1750 =
&nbsp;Afternoon Session II<br class=3D"">Olivia &nbsp;<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>ART =
***<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>cbor<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Concise Binary Object Representation Maintenance and Extensions =
WG<br class=3D"">VIP A &nbsp;&nbsp;<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>ART<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>ice<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>Interactive Connectivity =
Establishment WG - 1550-1650<br class=3D"">Canning <span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>RTG<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>rtgarea<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Routing Area Open Meeting<br class=3D"">Sophia &nbsp;<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>SEC<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>acme<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>Automated =
Certificate Management Environment WG<br class=3D""><br =
class=3D"">1810-1910 &nbsp;Afternoon Session III<br class=3D"">VIP A =
&nbsp;&nbsp;<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>SEC<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>curdle<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>CURves, Deprecating and a Little more Encryption WG<br =
class=3D"">Padang &nbsp;<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>TSV<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>tsvarea<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>Transport =
Area Open Meeting<br class=3D""><br class=3D"">FRIDAY, November 17, =
2017<br class=3D""><br class=3D"">0930-1130 &nbsp;Morning Session I<br =
class=3D"">Canning <span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>ART<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>httpbis<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>Hypertext =
Transfer Protocol WG<br class=3D"">VIP A &nbsp;&nbsp;<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>RTG<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>babel<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Babel routing protocol WG<br class=3D"">Collyer <span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>TSV<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>tsvwg<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Transport Area Working Group WG<br class=3D""><br class=3D""><br =
class=3D""><br class=3D""><br =
class=3D""></div></div></blockquote></div><br =
class=3D""></div></body></html>=

--Apple-Mail=_DD4BD848-0498-4312-88E7-4CFDB1CAB297--


From nobody Mon Oct 23 03:51:20 2017
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Mirja Kühlewind has entered the following ballot position for
charter-ietf-suit-00-01: No Objection

When responding, please keep the subject line intact and reply to all
email addresses included in the To and CC lines. (Feel free to cut this
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The document, along with other ballot positions, can be found here:
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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

I think it'd probably be not necessary to mention the IOTSU workshop in the
final charter. And instead of naming specific drafts in the charter, I'd prefer
to see milestones that respectively could mention these as starting points. In
any case, I'd actually like to see milestones added before approval as I would
also like to know what the expected time line is.



From nobody Mon Oct 23 04:00:14 2017
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Sent from my iPhone

> On Oct 23, 2017, at 6:51 AM, Mirja K=C3=BChlewind <ietf@kuehlewind.net> wr=
ote:
>=20
> Mirja K=C3=BChlewind has entered the following ballot position for
> charter-ietf-suit-00-01: No Objection
>=20
> When responding, please keep the subject line intact and reply to all
> email addresses included in the To and CC lines. (Feel free to cut this
> introductory paragraph, however.)
>=20
>=20
>=20
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/charter-ietf-suit/
>=20
>=20
>=20
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>=20
> I think it'd probably be not necessary to mention the IOTSU workshop in th=
e
> final charter. And instead of naming specific drafts in the charter, I'd p=
refer
> to see milestones that respectively could mention these as starting points=
. In
> any case, I'd actually like to see milestones added before approval as I w=
ould
> also like to know what the expected time line is.
>=20
Hi Mirja,

I did add the milestones.  Can you see them?

Best,
Kathleen=20
>=20


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From: "Mirja Kuehlewind (IETF)" <ietf@kuehlewind.net>
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Subject: Re: [Suit]  =?utf-8?q?Mirja_K=C3=BChlewind=27s_No_Objection_on_charte?= =?utf-8?q?r-ietf-suit-00-01=3A_=28with_COMMENT=29?=
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No, for me it says:

"No milestones for charter found.=E2=80=9C


> Am 23.10.2017 um 13:00 schrieb Kathleen Moriarty =
<kathleen.moriarty.ietf@gmail.com>:
>=20
>=20
>=20
> Sent from my iPhone
>=20
>> On Oct 23, 2017, at 6:51 AM, Mirja K=C3=BChlewind =
<ietf@kuehlewind.net> wrote:
>>=20
>> Mirja K=C3=BChlewind has entered the following ballot position for
>> charter-ietf-suit-00-01: No Objection
>>=20
>> When responding, please keep the subject line intact and reply to all
>> email addresses included in the To and CC lines. (Feel free to cut =
this
>> introductory paragraph, however.)
>>=20
>>=20
>>=20
>> The document, along with other ballot positions, can be found here:
>> https://datatracker.ietf.org/doc/charter-ietf-suit/
>>=20
>>=20
>>=20
>> =
----------------------------------------------------------------------
>> COMMENT:
>> =
----------------------------------------------------------------------
>>=20
>> I think it'd probably be not necessary to mention the IOTSU workshop =
in the
>> final charter. And instead of naming specific drafts in the charter, =
I'd prefer
>> to see milestones that respectively could mention these as starting =
points. In
>> any case, I'd actually like to see milestones added before approval =
as I would
>> also like to know what the expected time line is.
>>=20
> Hi Mirja,
>=20
> I did add the milestones.  Can you see them?
>=20
> Best,
> Kathleen=20
>>=20
>=20


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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/YyeTigQeIwg67sJSW2lWBGrvMTw>
Subject: Re: [Suit]  =?utf-8?q?Mirja_K=C3=BChlewind=27s_No_Objection_on_charte?= =?utf-8?q?r-ietf-suit-00-01=3A_=28with_COMMENT=29?=
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Sent from my iPhone

> On Oct 23, 2017, at 7:05 AM, Mirja Kuehlewind (IETF) <ietf@kuehlewind.net>=
 wrote:
>=20
> No, for me it says:
>=20
> "No milestones for charter found.=E2=80=9C
Ok, I'll look into that.  I entered them when I entered the charter.
>=20
>=20
>> Am 23.10.2017 um 13:00 schrieb Kathleen Moriarty <kathleen.moriarty.ietf@=
gmail.com>:
>>=20
>>=20
>>=20
>> Sent from my iPhone
>>=20
>>> On Oct 23, 2017, at 6:51 AM, Mirja K=C3=BChlewind <ietf@kuehlewind.net> w=
rote:
>>>=20
>>> Mirja K=C3=BChlewind has entered the following ballot position for
>>> charter-ietf-suit-00-01: No Objection
>>>=20
>>> When responding, please keep the subject line intact and reply to all
>>> email addresses included in the To and CC lines. (Feel free to cut this
>>> introductory paragraph, however.)
>>>=20
>>>=20
>>>=20
>>> The document, along with other ballot positions, can be found here:
>>> https://datatracker.ietf.org/doc/charter-ietf-suit/
>>>=20
>>>=20
>>>=20
>>> ----------------------------------------------------------------------
>>> COMMENT:
>>> ----------------------------------------------------------------------
>>>=20
>>> I think it'd probably be not necessary to mention the IOTSU workshop in t=
he
>>> final charter.

I'll check with the proponents as this shouldn't matter too much to leave in=
 or take out.
>>> And instead of naming specific drafts in the charter, I'd prefer
>>> to see milestones that respectively could mention these as starting poin=
ts.

Since it's mentioning a -bis of an RFC for the starting point, I think this i=
s fine.  If it's a big sticking point for you, we could phrase to say updati=
ng RFCxyz.

Best,
Kathleen=20
>>> any case, I'd actually like to see milestones added before approval as I=
 would
>>> also like to know what the expected time line is.
>>>=20
>> Hi Mirja,
>>=20
>> I did add the milestones.  Can you see them?
>>=20
>> Best,
>> Kathleen=20
>>>=20
>>=20
>=20


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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Date: Mon, 23 Oct 2017 09:52:44 -0400
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To: "Mirja Kuehlewind (IETF)" <ietf@kuehlewind.net>
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Subject: Re: [Suit]  =?utf-8?q?Mirja_K=C3=BChlewind=27s_No_Objection_on_charte?= =?utf-8?q?r-ietf-suit-00-01=3A_=28with_COMMENT=29?=
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Milestones have been added.  Maybe I didn't hit save when I entered
them originally.

Kathleen

On Mon, Oct 23, 2017 at 8:36 AM, Kathleen Moriarty
<kathleen.moriarty.ietf@gmail.com> wrote:
>
>
> Sent from my iPhone
>
>> On Oct 23, 2017, at 7:05 AM, Mirja Kuehlewind (IETF) <ietf@kuehlewind.ne=
t> wrote:
>>
>> No, for me it says:
>>
>> "No milestones for charter found.=E2=80=9C
> Ok, I'll look into that.  I entered them when I entered the charter.
>>
>>
>>> Am 23.10.2017 um 13:00 schrieb Kathleen Moriarty <kathleen.moriarty.iet=
f@gmail.com>:
>>>
>>>
>>>
>>> Sent from my iPhone
>>>
>>>> On Oct 23, 2017, at 6:51 AM, Mirja K=C3=BChlewind <ietf@kuehlewind.net=
> wrote:
>>>>
>>>> Mirja K=C3=BChlewind has entered the following ballot position for
>>>> charter-ietf-suit-00-01: No Objection
>>>>
>>>> When responding, please keep the subject line intact and reply to all
>>>> email addresses included in the To and CC lines. (Feel free to cut thi=
s
>>>> introductory paragraph, however.)
>>>>
>>>>
>>>>
>>>> The document, along with other ballot positions, can be found here:
>>>> https://datatracker.ietf.org/doc/charter-ietf-suit/
>>>>
>>>>
>>>>
>>>> ----------------------------------------------------------------------
>>>> COMMENT:
>>>> ----------------------------------------------------------------------
>>>>
>>>> I think it'd probably be not necessary to mention the IOTSU workshop i=
n the
>>>> final charter.
>
> I'll check with the proponents as this shouldn't matter too much to leave=
 in or take out.
>>>> And instead of naming specific drafts in the charter, I'd prefer
>>>> to see milestones that respectively could mention these as starting po=
ints.
>
> Since it's mentioning a -bis of an RFC for the starting point, I think th=
is is fine.  If it's a big sticking point for you, we could phrase to say u=
pdating RFCxyz.
>
> Best,
> Kathleen
>>>> any case, I'd actually like to see milestones added before approval as=
 I would
>>>> also like to know what the expected time line is.
>>>>
>>> Hi Mirja,
>>>
>>> I did add the milestones.  Can you see them?
>>>
>>> Best,
>>> Kathleen
>>>>
>>>
>>



--=20

Best regards,
Kathleen


From nobody Mon Oct 23 07:08:29 2017
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From: "Mirja Kuehlewind (IETF)" <ietf@kuehlewind.net>
In-Reply-To: <CAHbuEH6dr8LiNuMTyotYrTjJLYWiY0zr4FcuxoMGfrL958HHgw@mail.gmail.com>
Date: Mon, 23 Oct 2017 15:58:36 +0200
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Subject: Re: [Suit]  =?utf-8?q?Mirja_K=C3=BChlewind=27s_No_Objection_on_charte?= =?utf-8?q?r-ietf-suit-00-01=3A_=28with_COMMENT=29?=
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Hi Kathleen,

yes, I can see them now and have edited my position accordingly.

One editorial proposal here:
s/Submit X as WG item./Adopt X as WG item./

Thanks,
Mirja


> Am 23.10.2017 um 15:52 schrieb Kathleen Moriarty =
<kathleen.moriarty.ietf@gmail.com>:
>=20
> Milestones have been added.  Maybe I didn't hit save when I entered
> them originally.
>=20
> Kathleen
>=20
> On Mon, Oct 23, 2017 at 8:36 AM, Kathleen Moriarty
> <kathleen.moriarty.ietf@gmail.com> wrote:
>>=20
>>=20
>> Sent from my iPhone
>>=20
>>> On Oct 23, 2017, at 7:05 AM, Mirja Kuehlewind (IETF) =
<ietf@kuehlewind.net> wrote:
>>>=20
>>> No, for me it says:
>>>=20
>>> "No milestones for charter found.=E2=80=9C
>> Ok, I'll look into that.  I entered them when I entered the charter.
>>>=20
>>>=20
>>>> Am 23.10.2017 um 13:00 schrieb Kathleen Moriarty =
<kathleen.moriarty.ietf@gmail.com>:
>>>>=20
>>>>=20
>>>>=20
>>>> Sent from my iPhone
>>>>=20
>>>>> On Oct 23, 2017, at 6:51 AM, Mirja K=C3=BChlewind =
<ietf@kuehlewind.net> wrote:
>>>>>=20
>>>>> Mirja K=C3=BChlewind has entered the following ballot position for
>>>>> charter-ietf-suit-00-01: No Objection
>>>>>=20
>>>>> When responding, please keep the subject line intact and reply to =
all
>>>>> email addresses included in the To and CC lines. (Feel free to cut =
this
>>>>> introductory paragraph, however.)
>>>>>=20
>>>>>=20
>>>>>=20
>>>>> The document, along with other ballot positions, can be found =
here:
>>>>> https://datatracker.ietf.org/doc/charter-ietf-suit/
>>>>>=20
>>>>>=20
>>>>>=20
>>>>> =
----------------------------------------------------------------------
>>>>> COMMENT:
>>>>> =
----------------------------------------------------------------------
>>>>>=20
>>>>> I think it'd probably be not necessary to mention the IOTSU =
workshop in the
>>>>> final charter.
>>=20
>> I'll check with the proponents as this shouldn't matter too much to =
leave in or take out.
>>>>> And instead of naming specific drafts in the charter, I'd prefer
>>>>> to see milestones that respectively could mention these as =
starting points.
>>=20
>> Since it's mentioning a -bis of an RFC for the starting point, I =
think this is fine.  If it's a big sticking point for you, we could =
phrase to say updating RFCxyz.
>>=20
>> Best,
>> Kathleen
>>>>> any case, I'd actually like to see milestones added before =
approval as I would
>>>>> also like to know what the expected time line is.
>>>>>=20
>>>> Hi Mirja,
>>>>=20
>>>> I did add the milestones.  Can you see them?
>>>>=20
>>>> Best,
>>>> Kathleen
>>>>>=20
>>>>=20
>>>=20
>=20
>=20
>=20
> --=20
>=20
> Best regards,
> Kathleen


From nobody Mon Oct 23 07:36:52 2017
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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Date: Mon, 23 Oct 2017 10:35:51 -0400
Message-ID: <CAHbuEH66zSh7xE+XRe3potxW8ipbu04O7EQogZADU=0SyNXZ+g@mail.gmail.com>
To: "Mirja Kuehlewind (IETF)" <ietf@kuehlewind.net>
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Subject: Re: [Suit]  =?utf-8?q?Mirja_K=C3=BChlewind=27s_No_Objection_on_charte?= =?utf-8?q?r-ietf-suit-00-01=3A_=28with_COMMENT=29?=
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On Mon, Oct 23, 2017 at 9:58 AM, Mirja Kuehlewind (IETF)
<ietf@kuehlewind.net> wrote:
> Hi Kathleen,
>
> yes, I can see them now and have edited my position accordingly.
>
> One editorial proposal here:
> s/Submit X as WG item./Adopt X as WG item./

Thanks.
Kathleen
>
> Thanks,
> Mirja
>
>
>> Am 23.10.2017 um 15:52 schrieb Kathleen Moriarty <kathleen.moriarty.ietf=
@gmail.com>:
>>
>> Milestones have been added.  Maybe I didn't hit save when I entered
>> them originally.
>>
>> Kathleen
>>
>> On Mon, Oct 23, 2017 at 8:36 AM, Kathleen Moriarty
>> <kathleen.moriarty.ietf@gmail.com> wrote:
>>>
>>>
>>> Sent from my iPhone
>>>
>>>> On Oct 23, 2017, at 7:05 AM, Mirja Kuehlewind (IETF) <ietf@kuehlewind.=
net> wrote:
>>>>
>>>> No, for me it says:
>>>>
>>>> "No milestones for charter found.=E2=80=9C
>>> Ok, I'll look into that.  I entered them when I entered the charter.
>>>>
>>>>
>>>>> Am 23.10.2017 um 13:00 schrieb Kathleen Moriarty <kathleen.moriarty.i=
etf@gmail.com>:
>>>>>
>>>>>
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>>> On Oct 23, 2017, at 6:51 AM, Mirja K=C3=BChlewind <ietf@kuehlewind.n=
et> wrote:
>>>>>>
>>>>>> Mirja K=C3=BChlewind has entered the following ballot position for
>>>>>> charter-ietf-suit-00-01: No Objection
>>>>>>
>>>>>> When responding, please keep the subject line intact and reply to al=
l
>>>>>> email addresses included in the To and CC lines. (Feel free to cut t=
his
>>>>>> introductory paragraph, however.)
>>>>>>
>>>>>>
>>>>>>
>>>>>> The document, along with other ballot positions, can be found here:
>>>>>> https://datatracker.ietf.org/doc/charter-ietf-suit/
>>>>>>
>>>>>>
>>>>>>
>>>>>> --------------------------------------------------------------------=
--
>>>>>> COMMENT:
>>>>>> --------------------------------------------------------------------=
--
>>>>>>
>>>>>> I think it'd probably be not necessary to mention the IOTSU workshop=
 in the
>>>>>> final charter.
>>>
>>> I'll check with the proponents as this shouldn't matter too much to lea=
ve in or take out.
>>>>>> And instead of naming specific drafts in the charter, I'd prefer
>>>>>> to see milestones that respectively could mention these as starting =
points.
>>>
>>> Since it's mentioning a -bis of an RFC for the starting point, I think =
this is fine.  If it's a big sticking point for you, we could phrase to say=
 updating RFCxyz.
>>>
>>> Best,
>>> Kathleen
>>>>>> any case, I'd actually like to see milestones added before approval =
as I would
>>>>>> also like to know what the expected time line is.
>>>>>>
>>>>> Hi Mirja,
>>>>>
>>>>> I did add the milestones.  Can you see them?
>>>>>
>>>>> Best,
>>>>> Kathleen
>>>>>>
>>>>>
>>>>
>>
>>
>>
>> --
>>
>> Best regards,
>> Kathleen
>



--=20

Best regards,
Kathleen


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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Date: Mon, 23 Oct 2017 10:37:39 -0400
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On Mon, Oct 23, 2017 at 10:35 AM, Kathleen Moriarty
<kathleen.moriarty.ietf@gmail.com> wrote:
> On Mon, Oct 23, 2017 at 9:58 AM, Mirja Kuehlewind (IETF)
> <ietf@kuehlewind.net> wrote:
>> Hi Kathleen,
>>
>> yes, I can see them now and have edited my position accordingly.
>>
>> One editorial proposal here:
>> s/Submit X as WG item./Adopt X as WG item./
>
> Thanks.
> Kathleen

I made the updates, although this is just a preference - not worth arguing =
over.

Kathleen

>>
>> Thanks,
>> Mirja
>>
>>
>>> Am 23.10.2017 um 15:52 schrieb Kathleen Moriarty <kathleen.moriarty.iet=
f@gmail.com>:
>>>
>>> Milestones have been added.  Maybe I didn't hit save when I entered
>>> them originally.
>>>
>>> Kathleen
>>>
>>> On Mon, Oct 23, 2017 at 8:36 AM, Kathleen Moriarty
>>> <kathleen.moriarty.ietf@gmail.com> wrote:
>>>>
>>>>
>>>> Sent from my iPhone
>>>>
>>>>> On Oct 23, 2017, at 7:05 AM, Mirja Kuehlewind (IETF) <ietf@kuehlewind=
.net> wrote:
>>>>>
>>>>> No, for me it says:
>>>>>
>>>>> "No milestones for charter found.=E2=80=9C
>>>> Ok, I'll look into that.  I entered them when I entered the charter.
>>>>>
>>>>>
>>>>>> Am 23.10.2017 um 13:00 schrieb Kathleen Moriarty <kathleen.moriarty.=
ietf@gmail.com>:
>>>>>>
>>>>>>
>>>>>>
>>>>>> Sent from my iPhone
>>>>>>
>>>>>>> On Oct 23, 2017, at 6:51 AM, Mirja K=C3=BChlewind <ietf@kuehlewind.=
net> wrote:
>>>>>>>
>>>>>>> Mirja K=C3=BChlewind has entered the following ballot position for
>>>>>>> charter-ietf-suit-00-01: No Objection
>>>>>>>
>>>>>>> When responding, please keep the subject line intact and reply to a=
ll
>>>>>>> email addresses included in the To and CC lines. (Feel free to cut =
this
>>>>>>> introductory paragraph, however.)
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> The document, along with other ballot positions, can be found here:
>>>>>>> https://datatracker.ietf.org/doc/charter-ietf-suit/
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> -------------------------------------------------------------------=
---
>>>>>>> COMMENT:
>>>>>>> -------------------------------------------------------------------=
---
>>>>>>>
>>>>>>> I think it'd probably be not necessary to mention the IOTSU worksho=
p in the
>>>>>>> final charter.
>>>>
>>>> I'll check with the proponents as this shouldn't matter too much to le=
ave in or take out.
>>>>>>> And instead of naming specific drafts in the charter, I'd prefer
>>>>>>> to see milestones that respectively could mention these as starting=
 points.
>>>>
>>>> Since it's mentioning a -bis of an RFC for the starting point, I think=
 this is fine.  If it's a big sticking point for you, we could phrase to sa=
y updating RFCxyz.
>>>>
>>>> Best,
>>>> Kathleen
>>>>>>> any case, I'd actually like to see milestones added before approval=
 as I would
>>>>>>> also like to know what the expected time line is.
>>>>>>>
>>>>>> Hi Mirja,
>>>>>>
>>>>>> I did add the milestones.  Can you see them?
>>>>>>
>>>>>> Best,
>>>>>> Kathleen
>>>>>>>
>>>>>>
>>>>>
>>>
>>>
>>>
>>> --
>>>
>>> Best regards,
>>> Kathleen
>>
>
>
>
> --
>
> Best regards,
> Kathleen



--=20

Best regards,
Kathleen


From nobody Mon Oct 23 07:40:04 2017
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From: "Mirja Kuehlewind (IETF)" <ietf@kuehlewind.net>
In-Reply-To: <CAHbuEH7J2ExL9H6FW=BcO=NnSXS9Mp_LLP-dmg4B-5UohA12uQ@mail.gmail.com>
Date: Mon, 23 Oct 2017 16:39:58 +0200
Cc: suit-chairs@ietf.org, suit@ietf.org, The IESG <iesg@ietf.org>
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References: <150875587409.24868.2032021458473162166.idtracker@ietfa.amsl.com> <18C5DD1E-C332-44C4-AC45-85699D8881C0@gmail.com> <4F4A8B64-496A-41EC-B250-0D8EDBF5CBA1@kuehlewind.net> <FE5E5ADB-396C-44E7-A00E-EB20090F8142@gmail.com> <CAHbuEH6dr8LiNuMTyotYrTjJLYWiY0zr4FcuxoMGfrL958HHgw@mail.gmail.com> <27FBBE14-1B00-40D2-86F8-14AAE439F411@kuehlewind.net> <CAHbuEH66zSh7xE+XRe3potxW8ipbu04O7EQogZADU=0SyNXZ+g@mail.gmail.com> <CAHbuEH7J2ExL9H6FW=BcO=NnSXS9Mp_LLP-dmg4B-5UohA12uQ@mail.gmail.com>
To: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
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Subject: Re: [Suit]  =?utf-8?q?Mirja_K=C3=BChlewind=27s_No_Objection_on_charte?= =?utf-8?q?r-ietf-suit-00-01=3A_=28with_COMMENT=29?=
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> Am 23.10.2017 um 16:37 schrieb Kathleen Moriarty =
<kathleen.moriarty.ietf@gmail.com>:
>=20
> On Mon, Oct 23, 2017 at 10:35 AM, Kathleen Moriarty
> <kathleen.moriarty.ietf@gmail.com> wrote:
>> On Mon, Oct 23, 2017 at 9:58 AM, Mirja Kuehlewind (IETF)
>> <ietf@kuehlewind.net> wrote:
>>> Hi Kathleen,
>>>=20
>>> yes, I can see them now and have edited my position accordingly.
>>>=20
>>> One editorial proposal here:
>>> s/Submit X as WG item./Adopt X as WG item./
>>=20
>> Thanks.
>> Kathleen
>=20
> I made the updates, although this is just a preference - not worth =
arguing over.

That=E2=80=99s why I wrote =E2=80=9Aeditorial proposal=E2=80=98=E2=80=A6

Mirja



>=20
> Kathleen
>=20
>>>=20
>>> Thanks,
>>> Mirja
>>>=20
>>>=20
>>>> Am 23.10.2017 um 15:52 schrieb Kathleen Moriarty =
<kathleen.moriarty.ietf@gmail.com>:
>>>>=20
>>>> Milestones have been added.  Maybe I didn't hit save when I entered
>>>> them originally.
>>>>=20
>>>> Kathleen
>>>>=20
>>>> On Mon, Oct 23, 2017 at 8:36 AM, Kathleen Moriarty
>>>> <kathleen.moriarty.ietf@gmail.com> wrote:
>>>>>=20
>>>>>=20
>>>>> Sent from my iPhone
>>>>>=20
>>>>>> On Oct 23, 2017, at 7:05 AM, Mirja Kuehlewind (IETF) =
<ietf@kuehlewind.net> wrote:
>>>>>>=20
>>>>>> No, for me it says:
>>>>>>=20
>>>>>> "No milestones for charter found.=E2=80=9C
>>>>> Ok, I'll look into that.  I entered them when I entered the =
charter.
>>>>>>=20
>>>>>>=20
>>>>>>> Am 23.10.2017 um 13:00 schrieb Kathleen Moriarty =
<kathleen.moriarty.ietf@gmail.com>:
>>>>>>>=20
>>>>>>>=20
>>>>>>>=20
>>>>>>> Sent from my iPhone
>>>>>>>=20
>>>>>>>> On Oct 23, 2017, at 6:51 AM, Mirja K=C3=BChlewind =
<ietf@kuehlewind.net> wrote:
>>>>>>>>=20
>>>>>>>> Mirja K=C3=BChlewind has entered the following ballot position =
for
>>>>>>>> charter-ietf-suit-00-01: No Objection
>>>>>>>>=20
>>>>>>>> When responding, please keep the subject line intact and reply =
to all
>>>>>>>> email addresses included in the To and CC lines. (Feel free to =
cut this
>>>>>>>> introductory paragraph, however.)
>>>>>>>>=20
>>>>>>>>=20
>>>>>>>>=20
>>>>>>>> The document, along with other ballot positions, can be found =
here:
>>>>>>>> https://datatracker.ietf.org/doc/charter-ietf-suit/
>>>>>>>>=20
>>>>>>>>=20
>>>>>>>>=20
>>>>>>>> =
----------------------------------------------------------------------
>>>>>>>> COMMENT:
>>>>>>>> =
----------------------------------------------------------------------
>>>>>>>>=20
>>>>>>>> I think it'd probably be not necessary to mention the IOTSU =
workshop in the
>>>>>>>> final charter.
>>>>>=20
>>>>> I'll check with the proponents as this shouldn't matter too much =
to leave in or take out.
>>>>>>>> And instead of naming specific drafts in the charter, I'd =
prefer
>>>>>>>> to see milestones that respectively could mention these as =
starting points.
>>>>>=20
>>>>> Since it's mentioning a -bis of an RFC for the starting point, I =
think this is fine.  If it's a big sticking point for you, we could =
phrase to say updating RFCxyz.
>>>>>=20
>>>>> Best,
>>>>> Kathleen
>>>>>>>> any case, I'd actually like to see milestones added before =
approval as I would
>>>>>>>> also like to know what the expected time line is.
>>>>>>>>=20
>>>>>>> Hi Mirja,
>>>>>>>=20
>>>>>>> I did add the milestones.  Can you see them?
>>>>>>>=20
>>>>>>> Best,
>>>>>>> Kathleen
>>>>>>>>=20
>>>>>>>=20
>>>>>>=20
>>>>=20
>>>>=20
>>>>=20
>>>> --
>>>>=20
>>>> Best regards,
>>>> Kathleen
>>>=20
>>=20
>>=20
>>=20
>> --
>>=20
>> Best regards,
>> Kathleen
>=20
>=20
>=20
> --=20
>=20
> Best regards,
> Kathleen


From nobody Mon Oct 23 07:50:44 2017
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From: Suhas Nandakumar <suhasietf@gmail.com>
Date: Mon, 23 Oct 2017 17:28:22 -0700
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Subject: [Suit] Suit - Charter Considerations and Thoughts
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Thanks for bringing this work into IETF.  A bunch of us at Cisco,  agree
that a good way to do IoT firmware update needs to do this work and are
very much interested in contributing as well. We are planning to submit few
drafts in that effect before the deadline. Much of this comes from the
experience of shipping phones like the 7960 which had very limited memory
and firmware and keeping them upgraded across 100+ countries and every
continent including Antartica. Making things that can upgrade over a
satellite link, or inside a secure facility, and at web scale are all
problems that we deal with everyday. Having a standardized approach to this
would really help.

However, we would love to have discussions on few aspects of the charter
and it would be great if the BOF can help have the discussions.

Topics that we would like to discuss include roughly :

    Proposal for the IOT device to discover the Firmware server.

    Manifest to support newer formats  like JSON, CBOR and their secure
variants (JOSE/COSE).

    Firmware download protocol semantics and transport protocol options.

    Proposal for being agnostic of firmware image type and dependencies.



To summarize, we are very excited about the possibility of an IETF WG on
secure firmware download, but we think this charter needs substantial
changes before it is ready. We look forward to being able to discuss this
and refine this at the BOF.


Thanks

Suhas Nandakumar

--001a1145864e469f75055c4004c0
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<div dir=3D"ltr"><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;ma=
rgin-bottom:8pt" id=3D"gmail-docs-internal-guid-d6c339c8-4ba6-9bda-6278-c8c=
7cbf469d4"><span style=3D"font-size:11pt;font-family:Arial;background-color=
:transparent;vertical-align:baseline"><br></span></p><p dir=3D"ltr" style=
=3D"line-height:1.38;margin-top:0pt;margin-bottom:8pt" id=3D"gmail-docs-int=
ernal-guid-d6c339c8-4ba6-9bda-6278-c8c7cbf469d4"><span style=3D"font-size:1=
1pt;font-family:Arial;background-color:transparent;vertical-align:baseline"=
>Thanks for bringing this work into IETF.=C2=A0 A bunch of us at Cisco, =C2=
=A0agree that a good way to do IoT firmware update needs to do this work an=
d are very much interested in contributing as well. We are planning to subm=
it few drafts in that effect before the deadline. Much of this comes from t=
he experience of shipping phones like the 7960 which had very limited memor=
y and firmware and keeping them upgraded across 100+ countries and every co=
ntinent including Antartica. Making things that can upgrade over a satellit=
e link, or inside a secure facility, and at web scale are all problems that=
 we deal with everyday. Having a standardized approach to this would really=
 help.</span></p><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;ma=
rgin-bottom:8pt"><span style=3D"font-size:11pt;font-family:Arial;background=
-color:transparent;vertical-align:baseline">However, we would love to have =
discussions on few aspects of the charter and it would be great if the BOF =
can help have the discussions.</span></p><p dir=3D"ltr" style=3D"line-heigh=
t:1.38;margin-top:0pt;margin-bottom:8pt"><span style=3D"font-size:11pt;font=
-family:Arial;background-color:transparent;vertical-align:baseline">Topics =
that we would like to discuss include roughly :</span></p><p dir=3D"ltr" st=
yle=3D"line-height:1.38;margin-top:0pt;margin-bottom:8pt"><span style=3D"fo=
nt-size:11pt;font-family:Arial;background-color:transparent;vertical-align:=
baseline">=C2=A0=C2=A0=C2=A0 </span><span style=3D"font-size:11pt;font-fami=
ly:Arial;background-color:transparent;vertical-align:baseline">Proposal for=
 the IOT device to discover the Firmware server.</span></p><p dir=3D"ltr" s=
tyle=3D"line-height:1.38;margin-top:0pt;margin-bottom:8pt"><span style=3D"f=
ont-size:11pt;font-family:Arial;background-color:transparent;vertical-align=
:baseline">=C2=A0=C2=A0=C2=A0 </span><span style=3D"font-size:11pt;font-fam=
ily:Arial;background-color:transparent;vertical-align:baseline">Manifest to=
 support newer formats =C2=A0like JSON, CBOR and their secure variants (JOS=
E/COSE).</span></p><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;=
margin-bottom:8pt"><span style=3D"font-size:11pt;font-family:Arial;backgrou=
nd-color:transparent;vertical-align:baseline">=C2=A0=C2=A0=C2=A0 </span><sp=
an style=3D"font-size:11pt;font-family:Arial;background-color:transparent;v=
ertical-align:baseline">Firmware download protocol semantics and transport =
protocol options.</span></p><p dir=3D"ltr" style=3D"line-height:1.38;margin=
-top:0pt;margin-bottom:8pt"><span style=3D"font-size:11pt;font-family:Arial=
;background-color:transparent;vertical-align:baseline">=C2=A0 =C2=A0 Propos=
al for being=C2=A0</span><span style=3D"font-size:11pt;font-family:Arial;ba=
ckground-color:transparent;vertical-align:baseline">agnostic of firmware im=
age type and dependencies.</span></p><p dir=3D"ltr" style=3D"line-height:1.=
38;margin-top:0pt;margin-bottom:8pt">=C2=A0</p><p dir=3D"ltr" style=3D"line=
-height:1.38;margin-top:0pt;margin-bottom:8pt"><span style=3D"font-size:11p=
t;font-family:Arial;background-color:transparent;vertical-align:baseline">T=
o summarize, we are very excited about the possibility of an IETF WG on sec=
ure firmware download, but we think this charter needs substantial changes =
before it is ready. We look forward to being able to discuss this and refin=
e this at the BOF.=C2=A0</span></p><p style=3D"line-height:1.38;margin-top:=
0pt;margin-bottom:8pt"><span style=3D"font-size:11pt;font-family:Arial;back=
ground-color:transparent;vertical-align:baseline"><br></span></p><p style=
=3D"line-height:1.38;margin-top:0pt;margin-bottom:8pt"><span style=3D"font-=
size:11pt;font-family:Arial;background-color:transparent;vertical-align:bas=
eline">Thanks=C2=A0</span></p><p style=3D"line-height:1.38;margin-top:0pt;m=
argin-bottom:8pt"><span style=3D"font-size:11pt;font-family:Arial;backgroun=
d-color:transparent;vertical-align:baseline">Suhas Nandakumar</span></p></d=
iv>

--001a1145864e469f75055c4004c0--


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Hello All,

Finding out where to download firmware and that there is firmware available
is a key part of download the firmware and impacts the design of the
manifest.

We think selecting a simple approach to this needs to be included in scope
of the charter

Thanks
Suhas

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<div dir=3D"ltr"><div><span style=3D"background-color:transparent;font-fami=
ly:Arial;font-size:11pt">Hello All,</span></div><div><span style=3D"backgro=
und-color:transparent;font-family:Arial;font-size:11pt"><br></span></div><d=
iv><span style=3D"background-color:transparent;font-family:Arial;font-size:=
11pt">Finding out where to download firmware and that there is firmware ava=
ilable is a key part of download the firmware and impacts the design of the=
 manifest.=C2=A0</span></div><div><span style=3D"background-color:transpare=
nt;font-family:Arial;font-size:11pt"><br></span></div><div><span style=3D"b=
ackground-color:transparent;font-family:Arial;font-size:11pt">We think sele=
cting a simple approach to this needs to be included in scope of the charte=
r</span><br></div><div><span style=3D"background-color:transparent;font-fam=
ily:Arial;font-size:11pt"><br></span></div><div><span style=3D"background-c=
olor:transparent;font-family:Arial;font-size:11pt">Thanks</span></div><div>=
<span style=3D"background-color:transparent;font-family:Arial;font-size:11p=
t">Suhas</span></div></div>

--001a114dc75ad5e381055c4021d2--


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We plan to have some requirements and solutions drafts by the draft
deadline and would like to request agenda time at the BOF to discuss what
we think the scope of work for WG should be.


Thanks
Suhas Nandakumar

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<div dir=3D"ltr"><div><span style=3D"font-size:11pt;font-family:Arial;backg=
round-color:transparent;vertical-align:baseline"><br></span></div><span sty=
le=3D"font-size:11pt;font-family:Arial;background-color:transparent;vertica=
l-align:baseline" id=3D"gmail-docs-internal-guid-d6c339c8-4c41-6d6f-d537-25=
91e690c502">We plan to have some requirements and solutions drafts by the d=
raft deadline and would like to request agenda time at the BOF to discuss w=
hat we think the scope of work for WG should be.=C2=A0</span><br><div><span=
 style=3D"font-size:11pt;font-family:Arial;background-color:transparent;ver=
tical-align:baseline"><br></span></div><div><span style=3D"font-size:11pt;f=
ont-family:Arial;background-color:transparent;vertical-align:baseline"><br>=
</span></div><div><span style=3D"font-size:11pt;font-family:Arial;backgroun=
d-color:transparent;vertical-align:baseline">Thanks</span></div><div><span =
style=3D"font-size:11pt;font-family:Arial;background-color:transparent;vert=
ical-align:baseline">Suhas Nandakumar</span></div></div>

--001a11458efa390911055c41e804--


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Depending on what else is happening on the device, JSON or perhaps CBOR
would be a desirable format. The scope of the charter should allow the WG
to investigate selecting one or more manifest formats. If the charter locks
it to this format, it is very unlikely that we would implement this.  I
think you take a look at what manifests are in widespread use today, one
will come to the conclusion that formats other than ASN.1, for example, are
widely used in running code.


Thanks

Suhas Nandakumar

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<div dir=3D"ltr"><p style=3D"line-height:1.38;margin-top:0pt;margin-bottom:=
8pt" id=3D"gmail-docs-internal-guid-d6c339c8-4c44-7849-a82e-630363d0edc5"><=
br></p><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-botto=
m:8pt" id=3D"gmail-docs-internal-guid-d6c339c8-4c44-7849-a82e-630363d0edc5"=
><span style=3D"background-color:transparent;font-family:Arial;font-size:11=
pt">Depending on what else is happening on the device, JSON or perhaps CBOR=
 would be a desirable format. The scope of the charter should allow the WG =
to investigate selecting one or more manifest formats. If the charter locks=
 it to this format, it is very unlikely that we would implement this.=C2=A0=
 I think you take a look at what manifests are in widespread use today, one=
 will come to the conclusion that formats other than ASN.1, for example, ar=
e widely used in running code.</span><span style=3D"background-color:transp=
arent;font-family:Arial;font-size:11pt">=C2=A0</span><br></p><p dir=3D"ltr"=
 style=3D"line-height:1.38;margin-top:0pt;margin-bottom:8pt" id=3D"gmail-do=
cs-internal-guid-d6c339c8-4c44-7849-a82e-630363d0edc5"><span style=3D"backg=
round-color:transparent;font-family:Arial;font-size:11pt"><br></span></p><p=
 style=3D"line-height:1.38;margin-top:0pt;margin-bottom:8pt" id=3D"gmail-do=
cs-internal-guid-d6c339c8-4c44-7849-a82e-630363d0edc5"><span style=3D"backg=
round-color:transparent;font-family:Arial;font-size:11pt">Thanks</span></p>=
<p style=3D"line-height:1.38;margin-top:0pt;margin-bottom:8pt" id=3D"gmail-=
docs-internal-guid-d6c339c8-4c44-7849-a82e-630363d0edc5"><span style=3D"bac=
kground-color:transparent;font-family:Arial;font-size:11pt">Suhas Nandakuma=
r</span></p></div>

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While reading the manifest/architecture document there was mention to
support encrypted firmware.

We feel most devices don=E2=80=99t need firmware encrypted. It is also tota=
lly an
issue specific to that device and the vendor specific. The IETF work can
allow encrypted firmware but we don=E2=80=99t think that needs to be specif=
ied as
it is largely specific to how the IoT device vendor chose to do it.


Thanks

Suhas Nandakumar

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d86038c6b"><span style=3D"font-size:11pt;font-family:Arial;background-color=
:transparent;vertical-align:baseline"><br></span></p><p dir=3D"ltr" style=
=3D"line-height:1.38;margin-top:0pt;margin-bottom:8pt" id=3D"gmail-docs-int=
ernal-guid-d6c339c8-4c46-7ca5-8356-a92d86038c6b"><span style=3D"font-size:1=
1pt;font-family:Arial;background-color:transparent;vertical-align:baseline"=
>While reading the manifest/architecture document there was mention to supp=
ort encrypted firmware.</span></p><p dir=3D"ltr" style=3D"line-height:1.38;=
margin-top:0pt;margin-bottom:8pt" id=3D"gmail-docs-internal-guid-d6c339c8-4=
c46-7ca5-8356-a92d86038c6b"><span style=3D"background-color:transparent;fon=
t-family:Arial;font-size:11pt">We feel most devices don=E2=80=99t need firm=
ware encrypted. It is also totally an issue specific to that device and the=
 vendor specific. The IETF work can allow encrypted firmware but we don=E2=
=80=99t think that needs to be specified as it is largely specific to how t=
he IoT device vendor chose to do it.</span><span style=3D"background-color:=
transparent;font-family:Arial;font-size:11pt">=C2=A0</span></p><p dir=3D"lt=
r" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:8pt" id=3D"gmail-=
docs-internal-guid-d6c339c8-4c46-7ca5-8356-a92d86038c6b"><span style=3D"bac=
kground-color:transparent;font-family:Arial;font-size:11pt"><br></span></p>=
<p style=3D"line-height:1.38;margin-top:0pt;margin-bottom:8pt" id=3D"gmail-=
docs-internal-guid-d6c339c8-4c46-7ca5-8356-a92d86038c6b"><span style=3D"bac=
kground-color:transparent;font-family:Arial;font-size:11pt">Thanks</span></=
p><p style=3D"line-height:1.38;margin-top:0pt;margin-bottom:8pt" id=3D"gmai=
l-docs-internal-guid-d6c339c8-4c46-7ca5-8356-a92d86038c6b"><span style=3D"b=
ackground-color:transparent;font-family:Arial;font-size:11pt">Suhas Nandaku=
mar</span></p></div>

--001a1143fc2472700e055c41f8b3--


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I wasn't able to understand the reasoning for standardizing payload format.

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<div dir="ltr"><font face="Arial"><span style="font-size:14.6667px">I wasn&#39;t able to understand the reasoning for standardizing payload format.</span></font></div>

--f403045dd54e0d3671055c41fe30--


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Subject: [Suit] Firmware Transport Protocol
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On the protocol to transport firmware, the vast majority of firmware
updates we see  the industry using run over tftp and http with perhaps coap
in the future. We think the charter need to explicitly allow for a design
that allows any one of those three to be use by the IoT device and is to be
clear how they are each used.

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dd60b4ce9f">On the protocol to transport firmware, the vast majority of fir=
mware updates we see=C2=A0 the industry using run over tftp and http with p=
erhaps coap in the future. We think the charter need to explicitly allow fo=
r a design that allows any one of those three to be use by the IoT device a=
nd is to be clear how they are each used.=C2=A0</span><br><div><span style=
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Suhas Nandakumar <suhasietf@gmail.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Encrypted Firmware
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Date: Tue, 24 Oct 2017 07:11:07 +0000
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Subject: Re: [Suit] Encrypted Firmware
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Suhas Nandakumar <suhasietf@gmail.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Firmware Server Discovery
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Subject: Re: [Suit] Firmware Server Discovery
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: "Cullen Jennings (fluffy)" <fluffy@cisco.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Charter & Regulation
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Subject: Re: [Suit] Charter & Regulation
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Suhas Nandakumar <suhasietf@gmail.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Firmware Transport Protocol
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Subject: Re: [Suit] Firmware Transport Protocol
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To: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
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Subject: Re: [Suit] Firmware Transport Protocol
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Dear Hannes,

Thanks for clarifying some of the points and for getting the work =
started!

Just for my understanding, if I over-simplify, the goal si to define a =
manifest format (will all the behavior that is related to it) necessary =
to perform secure firmware update for IoT, is this correct?

(I imagine the way bindings are defined to the actual L2/L3 protocols =
that perform the update would be defined in the manifest file)

Best,
Alexander



> Le 24 oct. 2017 =C3=A0 09:20, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com> a =C3=A9crit :
>=20
> Hi Suhas,
> =20
> The beauty of the charter text is that it already allows any transport =
mechanism to be used.
> =20
> While home routers use HTTP and TFTP lower end IoT devices use CoAP or =
distribute the firmware images directly over the link layer protocol. =
See, for example, a recent write-up from my co-worker where he is using =
the firmware manifest we described and implemented over LoRa with =
differential updates: =
https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-updates/ =
<https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-updates/>
> =20
> Ciao
> Hannes
> =C2=A0 <>
> From: Suit [mailto:suit-bounces@ietf.org =
<mailto:suit-bounces@ietf.org>] On Behalf Of Suhas Nandakumar
> Sent: 24 October 2017 07:32
> To: suit@ietf.org <mailto:suit@ietf.org>
> Subject: [Suit] Firmware Transport Protocol
> =20
> =20
> On the protocol to transport firmware, the vast majority of firmware =
updates we see  the industry using run over tftp and http with perhaps =
coap in the future. We think the charter need to explicitly allow for a =
design that allows any one of those three to be use by the IoT device =
and is to be clear how they are each used.=20
> =20
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you. =
_______________________________________________
> Suit mailing list
> Suit@ietf.org <mailto:Suit@ietf.org>
> https://www.ietf.org/mailman/listinfo/suit =
<https://www.ietf.org/mailman/listinfo/suit>

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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><div class=3D"">Dear Hannes,</div><div class=3D""><br =
class=3D""></div><div class=3D"">Thanks for clarifying some of the =
points and for getting the work started!</div><div class=3D""><br =
class=3D""></div><div class=3D"">Just for my understanding, if I =
over-simplify, the goal si to define a manifest format (will all the =
behavior that is related to it) necessary to perform secure firmware =
update for IoT, is this correct?</div><div class=3D""><br =
class=3D""></div><div class=3D"">(I imagine the way bindings are defined =
to the actual L2/L3 protocols that perform the update would be defined =
in the manifest file)</div><div class=3D""><br class=3D""></div><div =
class=3D"">Best,</div><div class=3D"">Alexander</div><div class=3D""><br =
class=3D""></div><div class=3D""><br class=3D""></div><br =
class=3D""><div><blockquote type=3D"cite" class=3D""><div class=3D"">Le =
24 oct. 2017 =C3=A0 09:20, Hannes Tschofenig &lt;<a =
href=3D"mailto:Hannes.Tschofenig@arm.com" =
class=3D"">Hannes.Tschofenig@arm.com</a>&gt; a =C3=A9crit :</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div =
class=3D"WordSection1" style=3D"page: WordSection1; font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Hi Suhas,<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">The beauty of the =
charter text is that it already allows any transport mechanism to be =
used.<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">While home routers use =
HTTP and TFTP lower end IoT devices use CoAP or distribute the firmware =
images directly over the link layer protocol. See, for example, a recent =
write-up from my co-worker where he is using the firmware manifest we =
described and implemented over LoRa with differential updates:<span =
class=3D"Apple-converted-space">&nbsp;</span><a =
href=3D"https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-upda=
tes/" style=3D"color: purple; text-decoration: underline;" =
class=3D"">https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-u=
pdates/</a><o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Ciao<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hannes<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><a =
name=3D"_MailEndCompose" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D""><o:p class=3D"">&nbsp;</o:p></span></a></div><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><b class=3D""><span lang=3D"EN-US" =
style=3D"font-size: 10pt; font-family: Tahoma, sans-serif;" =
class=3D"">From:</span></b><span lang=3D"EN-US" style=3D"font-size: =
10pt; font-family: Tahoma, sans-serif;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>Suit [<a =
href=3D"mailto:suit-bounces@ietf.org" style=3D"color: purple; =
text-decoration: underline;" =
class=3D"">mailto:suit-bounces@ietf.org</a>]<span =
class=3D"Apple-converted-space">&nbsp;</span><b class=3D"">On Behalf =
Of<span class=3D"Apple-converted-space">&nbsp;</span></b>Suhas =
Nandakumar<br class=3D""><b class=3D"">Sent:</b><span =
class=3D"Apple-converted-space">&nbsp;</span>24 October 2017 07:32<br =
class=3D""><b class=3D"">To:</b><span =
class=3D"Apple-converted-space">&nbsp;</span><a =
href=3D"mailto:suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D"">suit@ietf.org</a><br class=3D""><b =
class=3D"">Subject:</b><span =
class=3D"Apple-converted-space">&nbsp;</span>[Suit] Firmware Transport =
Protocol<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><o:p class=3D"">&nbsp;</o:p></div><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Arial, =
sans-serif;" class=3D"">On the protocol to transport firmware, the vast =
majority of firmware updates we see&nbsp; the industry using run over =
tftp and http with perhaps coap in the future. We think the charter need =
to explicitly allow for a design that allows any one of those three to =
be use by the IoT device and is to be clear how they are each =
used.&nbsp;</span><o:p class=3D""></o:p></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div></div></div><span style=3D"font-family:=
 Helvetica; font-size: 12px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: =
inline !important;" class=3D"">IMPORTANT NOTICE: The contents of this =
email and any attachments are confidential and may also be privileged. =
If you are not the intended recipient, please notify the sender =
immediately and do not disclose the contents to any other person, use it =
for any purpose, or store or copy the information in any medium. Thank =
you.<span class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; =
display: inline !important;" =
class=3D"">_______________________________________________</span><br =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" =
class=3D""><span style=3D"font-family: Helvetica; font-size: 12px; =
font-style: normal; font-variant-caps: normal; font-weight: normal; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; float: none; display: inline =
!important;" class=3D"">Suit mailing list</span><br style=3D"font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=3D""><a =
href=3D"mailto:Suit@ietf.org" style=3D"color: purple; text-decoration: =
underline; font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-indent: 0px; text-transform: =
none; white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" =
class=3D"">Suit@ietf.org</a><br style=3D"font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=3D""><a =
href=3D"https://www.ietf.org/mailman/listinfo/suit" style=3D"color: =
purple; text-decoration: underline; font-family: Helvetica; font-size: =
12px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-size-adjust: auto; =
-webkit-text-stroke-width: 0px;" =
class=3D"">https://www.ietf.org/mailman/listinfo/suit</a></div></blockquot=
e></div><br class=3D""></body></html>=

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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Alexander Pelov <alexander@ackl.io>
CC: Suhas Nandakumar <suhasietf@gmail.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Firmware Transport Protocol
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Date: Tue, 24 Oct 2017 07:56:24 +0000
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Subject: Re: [Suit] Firmware Transport Protocol
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byBub3QgZGlzY2xvc2UgdGhlIGNvbnRlbnRzIHRvIGFueSBvdGhlciBwZXJzb24sIHVzZSBpdCBm
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From: Alexander Pelov <alexander@ackl.io>
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Cc: Suhas Nandakumar <suhasietf@gmail.com>, "suit@ietf.org" <suit@ietf.org>
To: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
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Subject: Re: [Suit] Firmware Transport Protocol
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--Apple-Mail=_424B3CBA-C4F5-484F-A4C3-64872F9B67D9
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	charset=utf-8

Hi Hannes,

Thanks for the quick reply! Ok, I think I understand a little bit =
better.

So, it=E2=80=99s about the File Format that contains the firmware? (so =
that we have nice things, such as signing, verification, delta-updates, =
and so forth ?)

Alexander


> Le 24 oct. 2017 =C3=A0 09:56, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com> a =C3=A9crit :
>=20
> Hi Alexander,
> =20
> I believe the work has to start somewhere.
> =20
> What do we have today?
> =20
> If you are using a general purpose OS, like Linux, then there are lots =
of software/firmware update mechanisms available. I know that there are =
still problems with using them on devices like home routers but those =
problems are often related to non-technical aspects, such as =
discontinued support or pushing updates through the long value chain. =
(This problem has even been recognized with smart phones.)
> =20
> Furthermore, there are also various =E2=80=9Ctransports=E2=80=9D for =
getting a firmware image from A-to-B.
> =20
> Hence, I had suggested to focus on the gaps that exist today, namely a =
standardized firmware format for use with low end IoT devices.
> Before we started our implementation work more than 2 years ago there =
was not much available in terms of standardized formats. Hence, we used =
RFC 4108 as a starting point.=20
> =20
> If we manage to complete this part of the work we will then be able to =
use it with a number of transports. Cisco may prefer a HTTPS based =
communication with the firmware update server pre-configured. We =
continue use our LwM2M approach with CoAP. Maybe someone else will =
switch to QUIC in the future or (as some of the low power WAN guys do) =
just shuffle it over their radio without using IP.
> =20
> Does this make sense?
> =20
> Ciao
> Hannes
> =20
> =C2=A0 <>
> From: Alexander Pelov [mailto:alexander@ackl.io =
<mailto:alexander@ackl.io>]=20
> Sent: 24 October 2017 09:45
> To: Hannes Tschofenig
> Cc: Suhas Nandakumar; suit@ietf.org <mailto:suit@ietf.org>
> Subject: Re: [Suit] Firmware Transport Protocol
> =20
> Dear Hannes,
> =20
> Thanks for clarifying some of the points and for getting the work =
started!
> =20
> Just for my understanding, if I over-simplify, the goal si to define a =
manifest format (will all the behavior that is related to it) necessary =
to perform secure firmware update for IoT, is this correct?
> =20
> (I imagine the way bindings are defined to the actual L2/L3 protocols =
that perform the update would be defined in the manifest file)
> =20
> Best,
> Alexander
> =20
> =20
> =20
> Le 24 oct. 2017 =C3=A0 09:20, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com <mailto:Hannes.Tschofenig@arm.com>> a =C3=A9cri=
t :
> =20
> Hi Suhas,
> =20
> The beauty of the charter text is that it already allows any transport =
mechanism to be used.
> =20
> While home routers use HTTP and TFTP lower end IoT devices use CoAP or =
distribute the firmware images directly over the link layer protocol. =
See, for example, a recent write-up from my co-worker where he is using =
the firmware manifest we described and implemented over LoRa with =
differential updates: =
https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-updates/ =
<https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-updates/>
> =20
> Ciao
> Hannes
> =20
> From: Suit [mailto:suit-bounces@ietf.org =
<mailto:suit-bounces@ietf.org>] On Behalf Of Suhas Nandakumar
> Sent: 24 October 2017 07:32
> To: suit@ietf.org <mailto:suit@ietf.org>
> Subject: [Suit] Firmware Transport Protocol
> =20
> =20
> On the protocol to transport firmware, the vast majority of firmware =
updates we see  the industry using run over tftp and http with perhaps =
coap in the future. We think the charter need to explicitly allow for a =
design that allows any one of those three to be use by the IoT device =
and is to be clear how they are each used.=20
> =20
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you. =
_______________________________________________
> Suit mailing list
> Suit@ietf.org <mailto:Suit@ietf.org>
> https://www.ietf.org/mailman/listinfo/suit =
<https://www.ietf.org/mailman/listinfo/suit>
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you.


--Apple-Mail=_424B3CBA-C4F5-484F-A4C3-64872F9B67D9
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html;
	charset=utf-8

<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><div class=3D"">Hi Hannes,</div><div class=3D""><br =
class=3D""></div><div class=3D"">Thanks for the quick reply! Ok, I think =
I understand a little bit better.</div><div class=3D""><br =
class=3D""></div><div class=3D"">So, it=E2=80=99s about the File Format =
that contains the firmware? (so that we have nice things, such as =
signing, verification, delta-updates, and so forth ?)</div><div =
class=3D""><br class=3D""></div><div class=3D"">Alexander</div><div =
class=3D""><br class=3D""></div><br class=3D""><div><blockquote =
type=3D"cite" class=3D""><div class=3D"">Le 24 oct. 2017 =C3=A0 09:56, =
Hannes Tschofenig &lt;<a href=3D"mailto:Hannes.Tschofenig@arm.com" =
class=3D"">Hannes.Tschofenig@arm.com</a>&gt; a =C3=A9crit :</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div =
class=3D"WordSection1" style=3D"page: WordSection1; font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Hi Alexander,<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">I believe the work has =
to start somewhere.<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D""><o:p class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">What do we have =
today?<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">If you are using a =
general purpose OS, like Linux, then there are lots of software/firmware =
update mechanisms available. I know that there are still problems with =
using them on devices like home routers but those problems are often =
related to non-technical aspects, such as discontinued support or =
pushing updates through the long value chain. (This problem has even =
been recognized with smart phones.)<o:p class=3D""></o:p></span></div><div=
 style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D""><o:p class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Furthermore, there are =
also various =E2=80=9Ctransports=E2=80=9D for getting a firmware image =
from A-to-B.<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Hence, I had suggested =
to focus on the gaps that exist today, namely a standardized firmware =
format for use with low end IoT devices.<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Before we started our implementation work =
more than 2 years ago there was not much available in terms of =
standardized formats. Hence, we used RFC 4108 as a starting point.<span =
class=3D"Apple-converted-space">&nbsp;</span><o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">If we manage to =
complete this part of the work we will then be able to use it with a =
number of transports. Cisco may prefer a HTTPS based communication with =
the firmware update server pre-configured. We continue use our LwM2M =
approach with CoAP. Maybe someone else will switch to QUIC in the future =
or (as some of the low power WAN guys do) just shuffle it over their =
radio without using IP.<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D""><o:p class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Does this make =
sense?<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Ciao<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hannes<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><a name=3D"_MailEndCompose" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></a></div><div class=3D""><div =
style=3D"border-style: solid none none; border-top-width: 1pt; =
border-top-color: rgb(181, 196, 223); padding: 3pt 0cm 0cm;" =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><b class=3D""><span =
lang=3D"EN-US" style=3D"font-size: 10pt; font-family: Tahoma, =
sans-serif;" class=3D"">From:</span></b><span lang=3D"EN-US" =
style=3D"font-size: 10pt; font-family: Tahoma, sans-serif;" =
class=3D""><span class=3D"Apple-converted-space">&nbsp;</span>Alexander =
Pelov [<a href=3D"mailto:alexander@ackl.io" style=3D"color: purple; =
text-decoration: underline;" class=3D"">mailto:alexander@ackl.io</a>]<span=
 class=3D"Apple-converted-space">&nbsp;</span><br class=3D""><b =
class=3D"">Sent:</b><span class=3D"Apple-converted-space">&nbsp;</span>24 =
October 2017 09:45<br class=3D""><b class=3D"">To:</b><span =
class=3D"Apple-converted-space">&nbsp;</span>Hannes Tschofenig<br =
class=3D""><b class=3D"">Cc:</b><span =
class=3D"Apple-converted-space">&nbsp;</span>Suhas Nandakumar;<span =
class=3D"Apple-converted-space">&nbsp;</span><a =
href=3D"mailto:suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D"">suit@ietf.org</a><br class=3D""><b =
class=3D"">Subject:</b><span =
class=3D"Apple-converted-space">&nbsp;</span>Re: [Suit] Firmware =
Transport Protocol<o:p class=3D""></o:p></span></div></div></div><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><o:p class=3D"">&nbsp;</o:p></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">Dear Hannes,<o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><o:p class=3D"">&nbsp;</o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Thanks for clarifying some of the points =
and for getting the work started!<o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D"">Just for my understanding, if I over-simplify, the =
goal si to define a manifest format (will all the behavior that is =
related to it) necessary to perform secure firmware update for IoT, is =
this correct?<o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D"">(I imagine the way bindings are defined to the actual =
L2/L3 protocols that perform the update would be defined in the manifest =
file)<o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D"">Best,<o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">Alexander<o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><o:p class=3D"">&nbsp;</o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><o:p class=3D"">&nbsp;</o:p></div><div class=3D""><blockquote =
style=3D"margin-top: 5pt; margin-bottom: 5pt;" class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">Le 24 oct. 2017 =C3=A0 =
09:20, Hannes Tschofenig &lt;<a href=3D"mailto:Hannes.Tschofenig@arm.com" =
style=3D"color: purple; text-decoration: underline;" =
class=3D"">Hannes.Tschofenig@arm.com</a>&gt; a =C3=A9crit :<o:p =
class=3D""></o:p></div></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D"">Hi =
Suhas,</span><o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">The beauty of the charter text is that it =
already allows any transport mechanism to be used.</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">While home routers use =
HTTP and TFTP lower end IoT devices use CoAP or distribute the firmware =
images directly over the link layer protocol. See, for example, a recent =
write-up from my co-worker where he is using the firmware manifest we =
described and implemented over LoRa with differential updates:<span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-upda=
tes/" style=3D"color: purple; text-decoration: underline;" =
class=3D""><span style=3D"color: purple;" =
class=3D"">https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-u=
pdates/</span></a></span><o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Ciao</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Hannes</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><b class=3D""><span lang=3D"EN-US" style=3D"font-size: 10pt; =
font-family: Tahoma, sans-serif;" class=3D"">From:</span></b><span =
class=3D"apple-converted-space"><span lang=3D"EN-US" style=3D"font-size: =
10pt; font-family: Tahoma, sans-serif;" =
class=3D"">&nbsp;</span></span><span lang=3D"EN-US" style=3D"font-size: =
10pt; font-family: Tahoma, sans-serif;" class=3D"">Suit [<a =
href=3D"mailto:suit-bounces@ietf.org" style=3D"color: purple; =
text-decoration: underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">mailto:suit-bounces@ietf.org</span></a>]<span =
class=3D"apple-converted-space">&nbsp;</span><b class=3D"">On Behalf =
Of<span class=3D"apple-converted-space">&nbsp;</span></b>Suhas =
Nandakumar<br class=3D""><b class=3D"">Sent:</b><span =
class=3D"apple-converted-space">&nbsp;</span>24 October 2017 07:32<br =
class=3D""><b class=3D"">To:</b><span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"mailto:suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">suit@ietf.org</span></a><br class=3D""><b =
class=3D"">Subject:</b><span =
class=3D"apple-converted-space">&nbsp;</span>[Suit] Firmware Transport =
Protocol</span><o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div><div class=3D""><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Arial, =
sans-serif;" class=3D"">On the protocol to transport firmware, the vast =
majority of firmware updates we see&nbsp; the industry using run over =
tftp and http with perhaps coap in the future. We think the charter need =
to explicitly allow for a design that allows any one of those three to =
be use by the IoT device and is to be clear how they are each =
used.&nbsp;</span><o:p class=3D""></o:p></div></div><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 9pt; font-family: Helvetica, =
sans-serif;" class=3D"">IMPORTANT NOTICE: The contents of this email and =
any attachments are confidential and may also be privileged. If you are =
not the intended recipient, please notify the sender immediately and do =
not disclose the contents to any other person, use it for any purpose, =
or store or copy the information in any medium. Thank you.<span =
class=3D"apple-converted-space">&nbsp;</span>_____________________________=
__________________<br class=3D"">Suit mailing list<br class=3D""></span><a=
 href=3D"mailto:Suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D""><span style=3D"font-size: 9pt; font-family: =
Helvetica, sans-serif; color: purple;" =
class=3D"">Suit@ietf.org</span></a><span style=3D"font-size: 9pt; =
font-family: Helvetica, sans-serif;" class=3D""><br class=3D""></span><a =
href=3D"https://www.ietf.org/mailman/listinfo/suit" style=3D"color: =
purple; text-decoration: underline;" class=3D""><span style=3D"font-size: =
9pt; font-family: Helvetica, sans-serif; color: purple;" =
class=3D"">https://www.ietf.org/mailman/listinfo/suit</span></a><o:p =
class=3D""></o:p></div></div></blockquote></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><o:p class=3D"">&nbsp;</o:p></div></div><span =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; =
display: inline !important;" class=3D"">IMPORTANT NOTICE: The contents =
of this email and any attachments are confidential and may also be =
privileged. If you are not the intended recipient, please notify the =
sender immediately and do not disclose the contents to any other person, =
use it for any purpose, or store or copy the information in any medium. =
Thank you.</span></div></blockquote></div><br class=3D""></body></html>=

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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Suhas Nandakumar <suhasietf@gmail.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Format of the payload
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Date: Tue, 24 Oct 2017 08:12:03 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/GBbv7htqZ1ZJIA54rcPTJS4EUCM>
Subject: Re: [Suit] Format of the payload
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Alexander Pelov <alexander@ackl.io>
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Subject: Re: [Suit] Firmware Transport Protocol
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Cc: "suit@ietf.org" <suit@ietf.org>, Suhas Nandakumar <suhasietf@gmail.com>
To: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
References: <CAMRcRGS6eJBXFNgsWUr8fLziWEF5ou5hcd-dHSMEeTBcgMBm1A@mail.gmail.com> <AM4PR0801MB2706C77E1B52A9970216048CFA470@AM4PR0801MB2706.eurprd08.prod.outlook.com> <563BCDC6-F43D-44B8-AEAB-2ED7F017EBB5@ackl.io> <AM4PR0801MB2706658687112F537B708588FA470@AM4PR0801MB2706.eurprd08.prod.outlook.com> <D4EED54C-50F1-47BB-BF73-4681B0E591F4@ackl.io> <AM4PR0801MB27069B9660D38AC6B03BA537FA470@AM4PR0801MB2706.eurprd08.prod.outlook.com>
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Subject: Re: [Suit] Firmware Transport Protocol
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Oh, I see, sounds good !

For information - during the last Yang of Things meeting (which very =
unfortunately was in the same time slot as FUD), we discussed the use of =
YANG model for this description. (the manifest file then can be =
expressed in CBOR, XML, or JSON.. (I=E2=80=99ll be tempted to default to =
CBOR).

Do you think this could be something of interest for the BoF and for the =
follow-up of Suit ?

Alexander





> Le 24 oct. 2017 =C3=A0 10:28, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com> a =C3=A9crit :
>=20
> =C3=98  Thanks for the quick reply! Ok, I think I understand a little =
bit better.
> =20
> =C3=98  So, it=E2=80=99s about the File Format that contains the =
firmware? (so that we have nice things, such as signing, verification, =
delta-updates, and so forth ?)
> =20
> Yes, it is pretty easy to understand. Just try to implement a firmware =
update mechanism and you will notice that the security part is the =
complex part. That=E2=80=99s probably not super surprising since we made =
this observation already numerous times already with other work in the =
IETF.
> =20
> If you want to know the details of what we have implemented, just take =
a look at https://tools.ietf.org/html/draft-moran-fud-manifest-00 =
<https://tools.ietf.org/html/draft-moran-fud-manifest-00>. As mentioned =
earlier, we are polishing our code right now and will release it as open =
source (Apache 2 license).
> =20
> Ciao
> Hannes
> =20
> Alexander
> =20
> =20
> Le 24 oct. 2017 =C3=A0 09:56, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com <mailto:Hannes.Tschofenig@arm.com>> a =C3=A9cri=
t :
> =20
> Hi Alexander,
> =20
> I believe the work has to start somewhere.
> =20
> What do we have today?
> =20
> If you are using a general purpose OS, like Linux, then there are lots =
of software/firmware update mechanisms available. I know that there are =
still problems with using them on devices like home routers but those =
problems are often related to non-technical aspects, such as =
discontinued support or pushing updates through the long value chain. =
(This problem has even been recognized with smart phones.)
> =20
> Furthermore, there are also various =E2=80=9Ctransports=E2=80=9D for =
getting a firmware image from A-to-B.
> =20
> Hence, I had suggested to focus on the gaps that exist today, namely a =
standardized firmware format for use with low end IoT devices.
> Before we started our implementation work more than 2 years ago there =
was not much available in terms of standardized formats. Hence, we used =
RFC 4108 as a starting point.=20
> =20
> If we manage to complete this part of the work we will then be able to =
use it with a number of transports. Cisco may prefer a HTTPS based =
communication with the firmware update server pre-configured. We =
continue use our LwM2M approach with CoAP. Maybe someone else will =
switch to QUIC in the future or (as some of the low power WAN guys do) =
just shuffle it over their radio without using IP.
> =20
> Does this make sense?
> =20
> Ciao
> Hannes
> =20
> =20
> From: Alexander Pelov [mailto:alexander@ackl.io =
<mailto:alexander@ackl.io>]=20
> Sent: 24 October 2017 09:45
> To: Hannes Tschofenig
> Cc: Suhas Nandakumar; suit@ietf.org <mailto:suit@ietf.org>
> Subject: Re: [Suit] Firmware Transport Protocol
> =20
> Dear Hannes,
> =20
> Thanks for clarifying some of the points and for getting the work =
started!
> =20
> Just for my understanding, if I over-simplify, the goal si to define a =
manifest format (will all the behavior that is related to it) necessary =
to perform secure firmware update for IoT, is this correct?
> =20
> (I imagine the way bindings are defined to the actual L2/L3 protocols =
that perform the update would be defined in the manifest file)
> =20
> Best,
> Alexander
> =20
> =20
> =20
> Le 24 oct. 2017 =C3=A0 09:20, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com <mailto:Hannes.Tschofenig@arm.com>> a =C3=A9cri=
t :
> =20
> Hi Suhas,
> =20
> The beauty of the charter text is that it already allows any transport =
mechanism to be used.
> =20
> While home routers use HTTP and TFTP lower end IoT devices use CoAP or =
distribute the firmware images directly over the link layer protocol. =
See, for example, a recent write-up from my co-worker where he is using =
the firmware manifest we described and implemented over LoRa with =
differential updates: =
https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-updates/ =
<https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-updates/>
> =20
> Ciao
> Hannes
> =20
> From: Suit [mailto:suit-bounces@ietf.org =
<mailto:suit-bounces@ietf.org>] On Behalf Of Suhas Nandakumar
> Sent: 24 October 2017 07:32
> To: suit@ietf.org <mailto:suit@ietf.org>
> Subject: [Suit] Firmware Transport Protocol
> =20
> =20
> On the protocol to transport firmware, the vast majority of firmware =
updates we see  the industry using run over tftp and http with perhaps =
coap in the future. We think the charter need to explicitly allow for a =
design that allows any one of those three to be use by the IoT device =
and is to be clear how they are each used.=20
> =20
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you. =
_______________________________________________
> Suit mailing list
> Suit@ietf.org <mailto:Suit@ietf.org>
> https://www.ietf.org/mailman/listinfo/suit =
<https://www.ietf.org/mailman/listinfo/suit>
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you.
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you. =
_______________________________________________
> Suit mailing list
> Suit@ietf.org
> https://www.ietf.org/mailman/listinfo/suit


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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><div class=3D"">Oh, I see, sounds good !</div><div =
class=3D""><br class=3D""></div><div class=3D"">For information - during =
the last Yang of Things meeting (which very unfortunately was in the =
same time slot as FUD), we discussed the use of YANG model for this =
description. (the manifest file then can be expressed in CBOR, XML, or =
JSON.. (I=E2=80=99ll be tempted to default to CBOR).</div><div =
class=3D""><br class=3D""></div><div class=3D"">Do you think this could =
be something of interest for the BoF and for the follow-up of Suit =
?</div><div class=3D""><br class=3D""></div><div =
class=3D"">Alexander</div><div class=3D""><br class=3D""></div><div =
class=3D""><br class=3D""></div><div class=3D""><br class=3D""></div><div =
class=3D""><br class=3D""></div><br class=3D""><div><blockquote =
type=3D"cite" class=3D""><div class=3D"">Le 24 oct. 2017 =C3=A0 10:28, =
Hannes Tschofenig &lt;<a href=3D"mailto:Hannes.Tschofenig@arm.com" =
class=3D"">Hannes.Tschofenig@arm.com</a>&gt; a =C3=A9crit :</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div =
class=3D"WordSection1" style=3D"page: WordSection1; font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style=3D"margin: =
0cm 0cm 0.0001pt 36pt; font-size: 12pt; font-family: 'Times New Roman', =
serif; text-indent: -18pt;" class=3D""><span style=3D"font-family: =
Wingdings; color: rgb(31, 73, 125);" class=3D""><span class=3D"">=C3=98<sp=
an style=3D"font-style: normal; font-variant-caps: normal; font-weight: =
normal; font-size: 7pt; line-height: normal; font-family: 'Times New =
Roman';" class=3D"">&nbsp;<span =
class=3D"Apple-converted-space">&nbsp;</span></span></span></span>Thanks =
for the quick reply! Ok, I think I understand a little bit better.<o:p =
class=3D""></o:p></div><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt 36pt; font-size: 12pt; font-family: 'Times New Roman', serif; =
text-indent: -18pt;" class=3D""><span style=3D"font-family: Wingdings; =
color: rgb(31, 73, 125);" class=3D""><span class=3D"">=C3=98<span =
style=3D"font-style: normal; font-variant-caps: normal; font-weight: =
normal; font-size: 7pt; line-height: normal; font-family: 'Times New =
Roman';" class=3D"">&nbsp;<span =
class=3D"Apple-converted-space">&nbsp;</span></span></span></span>So, =
it=E2=80=99s about the File Format that contains the firmware? (so that =
we have nice things, such as signing, verification, delta-updates, and =
so forth ?)<o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"color: rgb(31, 73, 125);" =
class=3D""><o:p class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Yes, it is pretty easy =
to understand. Just try to implement a firmware update mechanism and you =
will notice that the security part is the complex part. That=E2=80=99s =
probably not super surprising since we made this observation already =
numerous times already with other work in the IETF.<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">If you want to know the =
details of what we have implemented, just take a look at<span =
class=3D"Apple-converted-space">&nbsp;</span><a =
href=3D"https://tools.ietf.org/html/draft-moran-fud-manifest-00" =
style=3D"color: purple; text-decoration: underline;" =
class=3D"">https://tools.ietf.org/html/draft-moran-fud-manifest-00</a>. =
As mentioned earlier, we are polishing our code right now and will =
release it as open source (Apache 2 license).<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Ciao<br =
class=3D"">Hannes<o:p class=3D""></o:p></span></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Alexander<o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><o:p class=3D"">&nbsp;</o:p></div></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><o:p class=3D"">&nbsp;</o:p></div><div =
class=3D""><blockquote style=3D"margin-top: 5pt; margin-bottom: 5pt;" =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D"">Le =
24 oct. 2017 =C3=A0 09:56, Hannes Tschofenig &lt;<a =
href=3D"mailto:Hannes.Tschofenig@arm.com" style=3D"color: purple; =
text-decoration: underline;" class=3D"">Hannes.Tschofenig@arm.com</a>&gt; =
a =C3=A9crit :<o:p class=3D""></o:p></div></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><o:p class=3D"">&nbsp;</o:p></div><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hi Alexander,</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">I believe the work has =
to start somewhere.</span><o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">What do we have =
today?</span><o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">If you are using a general purpose OS, =
like Linux, then there are lots of software/firmware update mechanisms =
available. I know that there are still problems with using them on =
devices like home routers but those problems are often related to =
non-technical aspects, such as discontinued support or pushing updates =
through the long value chain. (This problem has even been recognized =
with smart phones.)</span><o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Furthermore, there are =
also various =E2=80=9Ctransports=E2=80=9D for getting a firmware image =
from A-to-B.</span><o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hence, I had suggested to focus on the =
gaps that exist today, namely a standardized firmware format for use =
with low end IoT devices.</span><o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Before we started our implementation work =
more than 2 years ago there was not much available in terms of =
standardized formats. Hence, we used RFC 4108 as a starting point.<span =
class=3D"apple-converted-space">&nbsp;</span></span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">If we manage to =
complete this part of the work we will then be able to use it with a =
number of transports. Cisco may prefer a HTTPS based communication with =
the firmware update server pre-configured. We continue use our LwM2M =
approach with CoAP. Maybe someone else will switch to QUIC in the future =
or (as some of the low power WAN guys do) just shuffle it over their =
radio without using IP.</span><o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Does this make =
sense?</span><o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Ciao</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Hannes</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"border-style: =
solid none none; border-top-width: 1pt; border-top-color: rgb(181, 196, =
223); padding: 3pt 0cm 0cm;" class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><b class=3D""><span lang=3D"EN-US" =
style=3D"font-size: 10pt; font-family: Tahoma, sans-serif;" =
class=3D"">From:</span></b><span class=3D"apple-converted-space"><span =
lang=3D"EN-US" style=3D"font-size: 10pt; font-family: Tahoma, =
sans-serif;" class=3D"">&nbsp;</span></span><span lang=3D"EN-US" =
style=3D"font-size: 10pt; font-family: Tahoma, sans-serif;" =
class=3D"">Alexander Pelov [<a href=3D"mailto:alexander@ackl.io" =
style=3D"color: purple; text-decoration: underline;" class=3D""><span =
style=3D"color: purple;" =
class=3D"">mailto:alexander@ackl.io</span></a>]<span =
class=3D"apple-converted-space">&nbsp;</span><br class=3D""><b =
class=3D"">Sent:</b><span class=3D"apple-converted-space">&nbsp;</span>24 =
October 2017 09:45<br class=3D""><b class=3D"">To:</b><span =
class=3D"apple-converted-space">&nbsp;</span>Hannes Tschofenig<br =
class=3D""><b class=3D"">Cc:</b><span =
class=3D"apple-converted-space">&nbsp;</span>Suhas Nandakumar;<span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"mailto:suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">suit@ietf.org</span></a><br class=3D""><b =
class=3D"">Subject:</b><span =
class=3D"apple-converted-space">&nbsp;</span>Re: [Suit] Firmware =
Transport Protocol</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Dear Hannes,<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Thanks for clarifying some of the points =
and for getting the work started!<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Just for my understanding, if I =
over-simplify, the goal si to define a manifest format (will all the =
behavior that is related to it) necessary to perform secure firmware =
update for IoT, is this correct?<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">(I imagine the way bindings are defined =
to the actual L2/L3 protocols that perform the update would be defined =
in the manifest file)<o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">Best,<o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">Alexander<o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div><div class=3D""><blockquote =
style=3D"margin-top: 5pt; margin-bottom: 5pt;" class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D"">Le =
24 oct. 2017 =C3=A0 09:20, Hannes Tschofenig &lt;<a =
href=3D"mailto:Hannes.Tschofenig@arm.com" style=3D"color: purple; =
text-decoration: underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">Hannes.Tschofenig@arm.com</span></a>&gt; a =C3=A9crit :<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D"">&nbsp;<o:p class=3D""></o:p></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Hi Suhas,</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">The beauty of the charter text is that it =
already allows any transport mechanism to be used.</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">While home routers use HTTP and TFTP lower =
end IoT devices use CoAP or distribute the firmware images directly over =
the link layer protocol. See, for example, a recent write-up from my =
co-worker where he is using the firmware manifest we described and =
implemented over LoRa with differential updates:<span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-upda=
tes/" style=3D"color: purple; text-decoration: underline;" =
class=3D""><span style=3D"color: purple;" =
class=3D"">https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-u=
pdates/</span></a></span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">Ciao</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hannes</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><b =
class=3D""><span lang=3D"EN-US" style=3D"font-size: 10pt; font-family: =
Tahoma, sans-serif;" class=3D"">From:</span></b><span =
class=3D"apple-converted-space"><span lang=3D"EN-US" style=3D"font-size: =
10pt; font-family: Tahoma, sans-serif;" =
class=3D"">&nbsp;</span></span><span lang=3D"EN-US" style=3D"font-size: =
10pt; font-family: Tahoma, sans-serif;" class=3D"">Suit [<a =
href=3D"mailto:suit-bounces@ietf.org" style=3D"color: purple; =
text-decoration: underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">mailto:suit-bounces@ietf.org</span></a>]<span =
class=3D"apple-converted-space">&nbsp;</span><b class=3D"">On Behalf =
Of<span class=3D"apple-converted-space">&nbsp;</span></b>Suhas =
Nandakumar<br class=3D""><b class=3D"">Sent:</b><span =
class=3D"apple-converted-space">&nbsp;</span>24 October 2017 07:32<br =
class=3D""><b class=3D"">To:</b><span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"mailto:suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">suit@ietf.org</span></a><br class=3D""><b =
class=3D"">Subject:</b><span =
class=3D"apple-converted-space">&nbsp;</span>[Suit] Firmware Transport =
Protocol</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Arial, sans-serif;" class=3D"">On =
the protocol to transport firmware, the vast majority of firmware =
updates we see&nbsp; the industry using run over tftp and http with =
perhaps coap in the future. We think the charter need to explicitly =
allow for a design that allows any one of those three to be use by the =
IoT device and is to be clear how they are each used.&nbsp;</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 9pt; font-family: Helvetica, sans-serif;" =
class=3D"">IMPORTANT NOTICE: The contents of this email and any =
attachments are confidential and may also be privileged. If you are not =
the intended recipient, please notify the sender immediately and do not =
disclose the contents to any other person, use it for any purpose, or =
store or copy the information in any medium. Thank you.<span =
class=3D"apple-converted-space">&nbsp;</span>_____________________________=
__________________<br class=3D"">Suit mailing list<br class=3D""></span><a=
 href=3D"mailto:Suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D""><span style=3D"font-size: 9pt; font-family: =
Helvetica, sans-serif; color: purple;" =
class=3D"">Suit@ietf.org</span></a><span style=3D"font-size: 9pt; =
font-family: Helvetica, sans-serif;" class=3D""><br class=3D""></span><a =
href=3D"https://www.ietf.org/mailman/listinfo/suit" style=3D"color: =
purple; text-decoration: underline;" class=3D""><span style=3D"font-size: =
9pt; font-family: Helvetica, sans-serif; color: purple;" =
class=3D"">https://www.ietf.org/mailman/listinfo/suit</span></a><o:p =
class=3D""></o:p></div></div></div></blockquote></div><div class=3D""><div=
 style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 9pt; font-family: Helvetica, sans-serif;" =
class=3D"">IMPORTANT NOTICE: The contents of this email and any =
attachments are confidential and may also be privileged. If you are not =
the intended recipient, please notify the sender immediately and do not =
disclose the contents to any other person, use it for any purpose, or =
store or copy the information in any medium. Thank you.</span><o:p =
class=3D""></o:p></div></div></blockquote></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><o:p class=3D"">&nbsp;</o:p></div></div><span =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; =
display: inline !important;" class=3D"">IMPORTANT NOTICE: The contents =
of this email and any attachments are confidential and may also be =
privileged. If you are not the intended recipient, please notify the =
sender immediately and do not disclose the contents to any other person, =
use it for any purpose, or store or copy the information in any medium. =
Thank you.<span class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; =
display: inline !important;" =
class=3D"">_______________________________________________</span><br =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" =
class=3D""><span style=3D"font-family: Helvetica; font-size: 12px; =
font-style: normal; font-variant-caps: normal; font-weight: normal; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; float: none; display: inline =
!important;" class=3D"">Suit mailing list</span><br style=3D"font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=3D""><span =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; =
display: inline !important;" class=3D""><a href=3D"mailto:Suit@ietf.org" =
class=3D"">Suit@ietf.org</a></span><br style=3D"font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=3D""><span =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; =
display: inline !important;" class=3D""><a =
href=3D"https://www.ietf.org/mailman/listinfo/suit" =
class=3D"">https://www.ietf.org/mailman/listinfo/suit</a></span></div></bl=
ockquote></div><br class=3D""></body></html>=

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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Alexander Pelov <alexander@ackl.io>
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Thread-Topic: [Suit] Firmware Transport Protocol
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Subject: Re: [Suit] Firmware Transport Protocol
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Subject: Re: [Suit] Firmware Transport Protocol
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Great! So I think we can converge on the YANG part and if necessary we =
can work on it together (there will probably be a YoT side meeting =
during IETF 100, so we can actually try to prepare this ahead of the =
BoF?)

On the encoding: we=E2=80=99re using CBOR in the application layer, so =
there are already CBOR encoders in place.=20
I am not sure if we can actually live without ASN.1 (e.g. if we don=E2=80=99=
t need X.501 certificates and all the rest)..

But this actually brings up an interesting question:
- What are the requirements for the manifest file=20

(because, if you but ASN.1 or CBOR there, then it becomes a MUST for the =
end-device to support it)

++
Alexander



> Le 24 oct. 2017 =C3=A0 12:39, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com> a =C3=A9crit :
>=20
> Hi Alexander,
> =20
> we have actually thought about exactly doing the same as well (in the =
anticipation that the usual encoding discussion comes up). =
Unfortunately, our Yang language expertise is a bit limited. (Note that =
our interest was really only in Yang as a language for describing the =
format rather than in anything else.)
> =20
> While the encoding appears to be a fundamental thing it is actually =
just a distraction from discussing the semantics of the fields and the =
security stuff.
> =20
> Regarding your preference for CBOR I will ask you the same question as =
I did to Suhas: do you have actually any reasons?
> =20
> Ciao
> Hannes
>  <>=20
> From: Alexander Pelov [mailto:alexander@ackl.io]=20
> Sent: 24 October 2017 11:09
> To: Hannes Tschofenig
> Cc: suit@ietf.org; Suhas Nandakumar
> Subject: Re: [Suit] Firmware Transport Protocol
> =20
> Oh, I see, sounds good !
> =20
> For information - during the last Yang of Things meeting (which very =
unfortunately was in the same time slot as FUD), we discussed the use of =
YANG model for this description. (the manifest file then can be =
expressed in CBOR, XML, or JSON.. (I=E2=80=99ll be tempted to default to =
CBOR).
> =20
> Do you think this could be something of interest for the BoF and for =
the follow-up of Suit ?
> =20
> Alexander
> =20
> =20
> =20
> =20
> =20
> Le 24 oct. 2017 =C3=A0 10:28, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com <mailto:Hannes.Tschofenig@arm.com>> a =C3=A9cri=
t :
> =20
> =C3=98  Thanks for the quick reply! Ok, I think I understand a little =
bit better.
> =20
> =C3=98  So, it=E2=80=99s about the File Format that contains the =
firmware? (so that we have nice things, such as signing, verification, =
delta-updates, and so forth ?)
> =20
> Yes, it is pretty easy to understand. Just try to implement a firmware =
update mechanism and you will notice that the security part is the =
complex part. That=E2=80=99s probably not super surprising since we made =
this observation already numerous times already with other work in the =
IETF.
> =20
> If you want to know the details of what we have implemented, just take =
a look at https://tools.ietf.org/html/draft-moran-fud-manifest-00 =
<https://tools.ietf.org/html/draft-moran-fud-manifest-00>. As mentioned =
earlier, we are polishing our code right now and will release it as open =
source (Apache 2 license).
> =20
> Ciao
> Hannes
> =20
> Alexander
> =20
> =20
> Le 24 oct. 2017 =C3=A0 09:56, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com <mailto:Hannes.Tschofenig@arm.com>> a =C3=A9cri=
t :
> =20
> Hi Alexander,
> =20
> I believe the work has to start somewhere.
> =20
> What do we have today?
> =20
> If you are using a general purpose OS, like Linux, then there are lots =
of software/firmware update mechanisms available. I know that there are =
still problems with using them on devices like home routers but those =
problems are often related to non-technical aspects, such as =
discontinued support or pushing updates through the long value chain. =
(This problem has even been recognized with smart phones.)
> =20
> Furthermore, there are also various =E2=80=9Ctransports=E2=80=9D for =
getting a firmware image from A-to-B.
> =20
> Hence, I had suggested to focus on the gaps that exist today, namely a =
standardized firmware format for use with low end IoT devices.
> Before we started our implementation work more than 2 years ago there =
was not much available in terms of standardized formats. Hence, we used =
RFC 4108 as a starting point.=20
> =20
> If we manage to complete this part of the work we will then be able to =
use it with a number of transports. Cisco may prefer a HTTPS based =
communication with the firmware update server pre-configured. We =
continue use our LwM2M approach with CoAP. Maybe someone else will =
switch to QUIC in the future or (as some of the low power WAN guys do) =
just shuffle it over their radio without using IP.
> =20
> Does this make sense?
> =20
> Ciao
> Hannes
> =20
> =20
> From: Alexander Pelov [mailto:alexander@ackl.io =
<mailto:alexander@ackl.io>]=20
> Sent: 24 October 2017 09:45
> To: Hannes Tschofenig
> Cc: Suhas Nandakumar; suit@ietf.org <mailto:suit@ietf.org>
> Subject: Re: [Suit] Firmware Transport Protocol
> =20
> Dear Hannes,
> =20
> Thanks for clarifying some of the points and for getting the work =
started!
> =20
> Just for my understanding, if I over-simplify, the goal si to define a =
manifest format (will all the behavior that is related to it) necessary =
to perform secure firmware update for IoT, is this correct?
> =20
> (I imagine the way bindings are defined to the actual L2/L3 protocols =
that perform the update would be defined in the manifest file)
> =20
> Best,
> Alexander
> =20
> =20
> =20
> Le 24 oct. 2017 =C3=A0 09:20, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com <mailto:Hannes.Tschofenig@arm.com>> a =C3=A9cri=
t :
> =20
> Hi Suhas,
> =20
> The beauty of the charter text is that it already allows any transport =
mechanism to be used.
> =20
> While home routers use HTTP and TFTP lower end IoT devices use CoAP or =
distribute the firmware images directly over the link layer protocol. =
See, for example, a recent write-up from my co-worker where he is using =
the firmware manifest we described and implemented over LoRa with =
differential updates: =
https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-updates/ =
<https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-updates/>
> =20
> Ciao
> Hannes
> =20
> From: Suit [mailto:suit-bounces@ietf.org =
<mailto:suit-bounces@ietf.org>] On Behalf Of Suhas Nandakumar
> Sent: 24 October 2017 07:32
> To: suit@ietf.org <mailto:suit@ietf.org>
> Subject: [Suit] Firmware Transport Protocol
> =20
> =20
> On the protocol to transport firmware, the vast majority of firmware =
updates we see  the industry using run over tftp and http with perhaps =
coap in the future. We think the charter need to explicitly allow for a =
design that allows any one of those three to be use by the IoT device =
and is to be clear how they are each used.=20
> =20
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you. =
_______________________________________________
> Suit mailing list
> Suit@ietf.org <mailto:Suit@ietf.org>
> https://www.ietf.org/mailman/listinfo/suit =
<https://www.ietf.org/mailman/listinfo/suit>
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you.
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you. =
_______________________________________________
> Suit mailing list
> Suit@ietf.org <mailto:Suit@ietf.org>
> https://www.ietf.org/mailman/listinfo/suit =
<https://www.ietf.org/mailman/listinfo/suit>
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you.


--Apple-Mail=_1930B0C0-05EF-4CBE-AE75-8D8B186C3D6E
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html;
	charset=utf-8

<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><div class=3D"">Great! So I think we can converge on the YANG =
part and if necessary we can work on it together (there will probably be =
a YoT side meeting during IETF 100, so we can actually try to prepare =
this ahead of the BoF?)</div><div class=3D""><br class=3D""></div><div =
class=3D"">On the encoding: we=E2=80=99re using CBOR in the application =
layer, so there are already CBOR encoders in place.&nbsp;</div><div =
class=3D"">I am not sure if we can actually live without ASN.1 (e.g. if =
we don=E2=80=99t need X.501 certificates and all the rest)..</div><div =
class=3D""><br class=3D""></div><div class=3D"">But this actually brings =
up an interesting question:</div><div class=3D"">- What are the =
requirements for the manifest file&nbsp;</div><div class=3D""><br =
class=3D""></div><div class=3D"">(because, if you but ASN.1 or CBOR =
there, then it becomes a MUST for the end-device to support =
it)</div><div class=3D""><br class=3D""></div><div class=3D"">++</div><div=
 class=3D"">Alexander</div><div class=3D""><br class=3D""></div><div =
class=3D""><br class=3D""></div><br class=3D""><div><blockquote =
type=3D"cite" class=3D""><div class=3D"">Le 24 oct. 2017 =C3=A0 12:39, =
Hannes Tschofenig &lt;<a href=3D"mailto:Hannes.Tschofenig@arm.com" =
class=3D"">Hannes.Tschofenig@arm.com</a>&gt; a =C3=A9crit :</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div =
class=3D"WordSection1" style=3D"page: WordSection1; font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Hi Alexander,<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">we have actually =
thought about exactly doing the same as well (in the anticipation that =
the usual encoding discussion comes up). Unfortunately, our Yang =
language expertise is a bit limited. (Note that our interest was really =
only in Yang as a language for describing the format rather than in =
anything else.)<o:p class=3D""></o:p></span></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">While the encoding =
appears to be a fundamental thing it is actually just a distraction from =
discussing the semantics of the fields and the security stuff.<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Regarding your =
preference for CBOR I will ask you the same question as I did to Suhas: =
do you have actually any reasons?<o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D""><o:p class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Ciao<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hannes<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><a =
name=3D"_MailEndCompose" class=3D""></a><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D""><o:p class=3D"">&nbsp;</o:p></span></div><div class=3D""><div =
style=3D"border-style: solid none none; border-top-width: 1pt; =
border-top-color: rgb(181, 196, 223); padding: 3pt 0cm 0cm;" =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><b class=3D""><span =
lang=3D"EN-US" style=3D"font-size: 10pt; font-family: Tahoma, =
sans-serif;" class=3D"">From:</span></b><span lang=3D"EN-US" =
style=3D"font-size: 10pt; font-family: Tahoma, sans-serif;" =
class=3D""><span class=3D"Apple-converted-space">&nbsp;</span>Alexander =
Pelov [<a href=3D"mailto:alexander@ackl.io" =
class=3D"">mailto:alexander@ackl.io</a>]<span =
class=3D"Apple-converted-space">&nbsp;</span><br class=3D""><b =
class=3D"">Sent:</b><span class=3D"Apple-converted-space">&nbsp;</span>24 =
October 2017 11:09<br class=3D""><b class=3D"">To:</b><span =
class=3D"Apple-converted-space">&nbsp;</span>Hannes Tschofenig<br =
class=3D""><b class=3D"">Cc:</b><span =
class=3D"Apple-converted-space">&nbsp;</span><a =
href=3D"mailto:suit@ietf.org" class=3D"">suit@ietf.org</a>; Suhas =
Nandakumar<br class=3D""><b class=3D"">Subject:</b><span =
class=3D"Apple-converted-space">&nbsp;</span>Re: [Suit] Firmware =
Transport Protocol<o:p class=3D""></o:p></span></div></div></div><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><o:p class=3D"">&nbsp;</o:p></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">Oh, I see, sounds =
good !<o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D"">For information - during the last Yang of Things =
meeting (which very unfortunately was in the same time slot as FUD), we =
discussed the use of YANG model for this description. (the manifest file =
then can be expressed in CBOR, XML, or JSON.. (I=E2=80=99ll be tempted =
to default to CBOR).<o:p class=3D""></o:p></div></div><div class=3D""><div=
 style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D"">Do you think this could be something of interest for =
the BoF and for the follow-up of Suit ?<o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><o:p class=3D"">&nbsp;</o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Alexander<o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><o:p class=3D"">&nbsp;</o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><o:p class=3D"">&nbsp;</o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><o:p class=3D"">&nbsp;</o:p></div><div class=3D""><blockquote =
style=3D"margin-top: 5pt; margin-bottom: 5pt;" class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">Le 24 oct. 2017 =C3=A0 =
10:28, Hannes Tschofenig &lt;<a href=3D"mailto:Hannes.Tschofenig@arm.com" =
style=3D"color: purple; text-decoration: underline;" =
class=3D"">Hannes.Tschofenig@arm.com</a>&gt; a =C3=A9crit :<o:p =
class=3D""></o:p></div></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div><div class=3D""><div style=3D"margin-left: =
36pt;" class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: =
12pt; font-family: 'Times New Roman', serif; text-indent: -18pt;" =
class=3D""><span style=3D"font-family: Wingdings; color: rgb(31, 73, =
125);" class=3D"">=C3=98</span><span style=3D"font-size: 7pt; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;<span =
class=3D"apple-converted-space">&nbsp;</span></span>Thanks for the quick =
reply! Ok, I think I understand a little bit better.<o:p =
class=3D""></o:p></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div><div =
style=3D"margin-left: 36pt;" class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; =
text-indent: -18pt;" class=3D""><span style=3D"font-family: Wingdings; =
color: rgb(31, 73, 125);" class=3D"">=C3=98</span><span =
style=3D"font-size: 7pt; color: rgb(31, 73, 125);" class=3D"">&nbsp;<span =
class=3D"apple-converted-space">&nbsp;</span></span>So, it=E2=80=99s =
about the File Format that contains the firmware? (so that we have nice =
things, such as signing, verification, delta-updates, and so forth =
?)<o:p class=3D""></o:p></div></div></div><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span style=3D"color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Yes, it is pretty easy =
to understand. Just try to implement a firmware update mechanism and you =
will notice that the security part is the complex part. That=E2=80=99s =
probably not super surprising since we made this observation already =
numerous times already with other work in the IETF.</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">If you want to know the =
details of what we have implemented, just take a look at<span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"https://tools.ietf.org/html/draft-moran-fud-manifest-00" =
style=3D"color: purple; text-decoration: underline;" class=3D""><span =
style=3D"color: purple;" =
class=3D"">https://tools.ietf.org/html/draft-moran-fud-manifest-00</span><=
/a>. As mentioned earlier, we are polishing our code right now and will =
release it as open source (Apache 2 license).</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Ciao<br =
class=3D"">Hannes</span><o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Alexander<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D"">&nbsp;<o:p class=3D""></o:p></div></div><div =
class=3D""><blockquote style=3D"margin-top: 5pt; margin-bottom: 5pt;" =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">Le 24 oct. 2017 =C3=A0 09:56, Hannes Tschofenig &lt;<a =
href=3D"mailto:Hannes.Tschofenig@arm.com" style=3D"color: purple; =
text-decoration: underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">Hannes.Tschofenig@arm.com</span></a>&gt; a =C3=A9crit :<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D"">&nbsp;<o:p class=3D""></o:p></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Hi =
Alexander,</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D"">I =
believe the work has to start somewhere.</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">What do we have today?</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">If you are using a general purpose OS, =
like Linux, then there are lots of software/firmware update mechanisms =
available. I know that there are still problems with using them on =
devices like home routers but those problems are often related to =
non-technical aspects, such as discontinued support or pushing updates =
through the long value chain. (This problem has even been recognized =
with smart phones.)</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">Furthermore, there are also various =E2=80=9Ctransports=E2=80=9D=
 for getting a firmware image from A-to-B.</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hence, I had suggested to focus on the =
gaps that exist today, namely a standardized firmware format for use =
with low end IoT devices.</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">Before we started our implementation work more than 2 years =
ago there was not much available in terms of standardized formats. =
Hence, we used RFC 4108 as a starting point.<span =
class=3D"apple-converted-space">&nbsp;</span></span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">If we manage to complete this part of the =
work we will then be able to use it with a number of transports. Cisco =
may prefer a HTTPS based communication with the firmware update server =
pre-configured. We continue use our LwM2M approach with CoAP. Maybe =
someone else will switch to QUIC in the future or (as some of the low =
power WAN guys do) just shuffle it over their radio without using =
IP.</span><o:p class=3D""></o:p></div></div></div><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">Does this make sense?</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Ciao</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">Hannes</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div style=3D"border-style: solid none none; =
border-top-width: 1pt; border-top-color: rgb(181, 196, 223); padding: =
3pt 0cm 0cm;" class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><b class=3D""><span lang=3D"EN-US" =
style=3D"font-size: 10pt; font-family: Tahoma, sans-serif;" =
class=3D"">From:</span></b><span class=3D"apple-converted-space"><span =
lang=3D"EN-US" style=3D"font-size: 10pt; font-family: Tahoma, =
sans-serif;" class=3D"">&nbsp;</span></span><span lang=3D"EN-US" =
style=3D"font-size: 10pt; font-family: Tahoma, sans-serif;" =
class=3D"">Alexander Pelov [<a href=3D"mailto:alexander@ackl.io" =
style=3D"color: purple; text-decoration: underline;" class=3D""><span =
style=3D"color: purple;" =
class=3D"">mailto:alexander@ackl.io</span></a>]<span =
class=3D"apple-converted-space">&nbsp;</span><br class=3D""><b =
class=3D"">Sent:</b><span class=3D"apple-converted-space">&nbsp;</span>24 =
October 2017 09:45<br class=3D""><b class=3D"">To:</b><span =
class=3D"apple-converted-space">&nbsp;</span>Hannes Tschofenig<br =
class=3D""><b class=3D"">Cc:</b><span =
class=3D"apple-converted-space">&nbsp;</span>Suhas Nandakumar;<span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"mailto:suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">suit@ietf.org</span></a><br class=3D""><b =
class=3D"">Subject:</b><span =
class=3D"apple-converted-space">&nbsp;</span>Re: [Suit] Firmware =
Transport Protocol</span><o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">Dear Hannes,<o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">Thanks for clarifying some of the points and for getting the =
work started!<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">Just for my understanding, if I over-simplify, the goal si to =
define a manifest format (will all the behavior that is related to it) =
necessary to perform secure firmware update for IoT, is this =
correct?<o:p class=3D""></o:p></div></div></div></div><div class=3D""><div=
 class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">(I imagine the way bindings are defined to the actual L2/L3 =
protocols that perform the update would be defined in the manifest =
file)<o:p class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">Best,<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">Alexander<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div><div =
class=3D""><blockquote style=3D"margin-top: 5pt; margin-bottom: 5pt;" =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Le 24 oct. 2017 =C3=A0 09:20, Hannes =
Tschofenig &lt;<a href=3D"mailto:Hannes.Tschofenig@arm.com" =
style=3D"color: purple; text-decoration: underline;" class=3D""><span =
style=3D"color: purple;" =
class=3D"">Hannes.Tschofenig@arm.com</span></a>&gt; a =C3=A9crit :<o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hi Suhas,</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">The beauty of the charter text is that it =
already allows any transport mechanism to be used.</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">While home routers use HTTP and TFTP lower =
end IoT devices use CoAP or distribute the firmware images directly over =
the link layer protocol. See, for example, a recent write-up from my =
co-worker where he is using the firmware manifest we described and =
implemented over LoRa with differential updates:<span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-upda=
tes/" style=3D"color: purple; text-decoration: underline;" =
class=3D""><span style=3D"color: purple;" =
class=3D"">https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-u=
pdates/</span></a></span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Ciao</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hannes</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><b =
class=3D""><span lang=3D"EN-US" style=3D"font-size: 10pt; font-family: =
Tahoma, sans-serif;" class=3D"">From:</span></b><span =
class=3D"apple-converted-space"><span lang=3D"EN-US" style=3D"font-size: =
10pt; font-family: Tahoma, sans-serif;" =
class=3D"">&nbsp;</span></span><span lang=3D"EN-US" style=3D"font-size: =
10pt; font-family: Tahoma, sans-serif;" class=3D"">Suit [<a =
href=3D"mailto:suit-bounces@ietf.org" style=3D"color: purple; =
text-decoration: underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">mailto:suit-bounces@ietf.org</span></a>]<span =
class=3D"apple-converted-space">&nbsp;</span><b class=3D"">On Behalf =
Of<span class=3D"apple-converted-space">&nbsp;</span></b>Suhas =
Nandakumar<br class=3D""><b class=3D"">Sent:</b><span =
class=3D"apple-converted-space">&nbsp;</span>24 October 2017 07:32<br =
class=3D""><b class=3D"">To:</b><span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"mailto:suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">suit@ietf.org</span></a><br class=3D""><b =
class=3D"">Subject:</b><span =
class=3D"apple-converted-space">&nbsp;</span>[Suit] Firmware Transport =
Protocol</span><o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Arial, sans-serif;" class=3D"">On =
the protocol to transport firmware, the vast majority of firmware =
updates we see&nbsp; the industry using run over tftp and http with =
perhaps coap in the future. We think the charter need to explicitly =
allow for a design that allows any one of those three to be use by the =
IoT device and is to be clear how they are each used.&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div></div></div></div><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 9pt; font-family: Helvetica, sans-serif;" =
class=3D"">IMPORTANT NOTICE: The contents of this email and any =
attachments are confidential and may also be privileged. If you are not =
the intended recipient, please notify the sender immediately and do not =
disclose the contents to any other person, use it for any purpose, or =
store or copy the information in any medium. Thank you.<span =
class=3D"apple-converted-space">&nbsp;</span>_____________________________=
__________________<br class=3D"">Suit mailing list<br class=3D""></span><a=
 href=3D"mailto:Suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D""><span style=3D"font-size: 9pt; font-family: =
Helvetica, sans-serif; color: purple;" =
class=3D"">Suit@ietf.org</span></a><span style=3D"font-size: 9pt; =
font-family: Helvetica, sans-serif;" class=3D""><br class=3D""></span><a =
href=3D"https://www.ietf.org/mailman/listinfo/suit" style=3D"color: =
purple; text-decoration: underline;" class=3D""><span style=3D"font-size: =
9pt; font-family: Helvetica, sans-serif; color: purple;" =
class=3D"">https://www.ietf.org/mailman/listinfo/suit</span></a><o:p =
class=3D""></o:p></div></div></div></div></blockquote></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div><div =
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
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Subject: Re: [Suit] Firmware Transport Protocol
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Suhas Nandakumar <suhasietf@gmail.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Suit - Charter Considerations and Thoughts
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/2zwxQ5RRm35SPeuXHIxf2hbYxwM>
Subject: Re: [Suit] Suit - Charter Considerations and Thoughts
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Subject: Re: [Suit] Suit - Charter Considerations and Thoughts
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> On Oct 24, 2017, at 6:00 AM, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com> wrote:
>=20
> Regarding the charter comments I believe you misunderstand this effort =
a bit. The proposed work is actually not about the download of the =
firmware but instead focuses about the meta-data and security wrapper =
around the firmware/software.

The whole point of having a BOF is to try and figure out what the scope =
of the work should be.=20=


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From: Cullen Jennings <fluffy@iii.ca>
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> On Oct 24, 2017, at 3:08 AM, Alexander Pelov <alexander@ackl.io> =
wrote:
>=20
> Oh, I see, sounds good !
>=20
> For information - during the last Yang of Things meeting (which very =
unfortunately was in the same time slot as FUD), we discussed the use of =
YANG model for this description. (the manifest file then can be =
expressed in CBOR, XML, or JSON.. (I=E2=80=99ll be tempted to default to =
CBOR).
>=20
> Do you think this could be something of interest for the BoF and for =
the follow-up of Suit ?
>=20
> Alexander
>=20

 A bunch of the management systems that need to deal with keeping track =
of what is running on the IoT device and more and more moving to yang so =
I think that would be very well worth considering as  a way to express =
the data model for the manifest.=20=


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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/KG2kdjRNYygAWxn1qySo8wCTXWI>
Subject: Re: [Suit] Suit - Charter Considerations and Thoughts
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> The whole point of having a BOF is to try and figure out what the scope o=
f the work should be.

I am sure you have been aware that there have been efforts to form a WG wit=
hout having a BOF, an option ADs have at their disposal.

Ciao
Hannes

IMPORTANT NOTICE: The contents of this email and any attachments are confid=
ential and may also be privileged. If you are not the intended recipient, p=
lease notify the sender immediately and do not disclose the contents to any=
 other person, use it for any purpose, or store or copy the information in =
any medium. Thank you.


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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Cullen Jennings <fluffy@iii.ca>, Alexander Pelov <alexander@ackl.io>
CC: Suhas Nandakumar <suhasietf@gmail.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Firmware Transport Protocol
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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
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Date: Tue, 24 Oct 2017 09:04:10 -0400
Cc: Cullen Jennings <fluffy@iii.ca>, "suit@ietf.org" <suit@ietf.org>, Suhas Nandakumar <suhasietf@gmail.com>
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To: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/72MMfHq0VNslPgUWEoOQLQDwAAw>
Subject: Re: [Suit] Suit - Charter Considerations and Thoughts
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Sent from my iPhone

On Oct 24, 2017, at 8:45 AM, Hannes Tschofenig <Hannes.Tschofenig@arm.com> w=
rote:

>> The whole point of having a BOF is to try and figure out what the scope o=
f the work should be.
>=20
> I am sure you have been aware that there have been efforts to form a WG wi=
thout having a BOF, an option ADs have at their disposal.

If there's no open discussion on the charter and it's been sufficiently addr=
essed, a charter can be approved.  If it needs to be discussed, a BoF is hel=
pful for high bandwidth conversations.

The charter is in internal review right now, then goes to external review.  I=
t doesn't complete external review until the discussions have completed (in s=
ome way).

More should weigh in on this thread to help with scope and determine if this=
 proposal would fit or require a second WG.

Best regards,
Kathleen=20
>=20
> Ciao
> Hannes
>=20
> IMPORTANT NOTICE: The contents of this email and any attachments are confi=
dential and may also be privileged. If you are not the intended recipient, p=
lease notify the sender immediately and do not disclose the contents to any o=
ther person, use it for any purpose, or store or copy the information in any=
 medium. Thank you.
>=20
> _______________________________________________
> Suit mailing list
> Suit@ietf.org
> https://www.ietf.org/mailman/listinfo/suit


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Subject: [Suit] Transactional updates
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I don't know about you, but I am fed up of the time it takes for
software updates on my desktop. First the update has to be downloaded
and then it has to be installed. Why can't this be instantaneous?

What I would like is to download the software update and then tell the
O/S to simply overlay the update on top of the file system as an
atomic operation. So installing a software update takes a millisecond,
no more.

Rolling back a software update is just a matter of telling the O/S to
stop applying the overlay.

It seems to me that this sort of capability would be very useful at
the device level as well. Even more so as the chief concern in any
software update scheme is that you end up bricking a device. Building
the ability to roll updates forwards and backwards is powerful.

I would also like this to be integrated into software signing and in
an intelligent fashion so that the signature encompasses both the code
and the data and it is possible to validate components independently.


There is of course going to be a cost and it is the need for storage.
The traditional file system organization is a response to highly
constrained storage. I have not yet fully considered space
optimizations because I have been thinking about the constrained
device but I think my approach could be modified for a fairly
constrained device. My approach is not going to be appropriate for
your PIC controllers but it is definitely feasible at the Arduino
level and above.

My approach is based on a Merkle Tree based container format. This may
sound intimidating but it shouldn't be. I designed, documented and
implemented the scheme in under a week:

https://tools.ietf.org/html/draft-hallambaker-jbcd-container-00

or in HTML with diagrams at

http://prismproof.org/Documents/draft-hallambaker-jbcd-container.html


The draft describes a container format that consists of a sequence of
variable length chunks that has the property that the sequence can be
traversed with equal efficiency in the forward and reverse directions.
This can optionally be indexed via a binary tree to allow random
access to any frame in log(n) time. Chain and (Merkle) tree digests
may be constructed which may be signed.

Each frame consists of a header and an optional payload. The payload
may be encrypted and/or signed using JOSE. The only fixed requirement
for the header encoding is that frame 0 has to have a header encoded
in JSON (for interop). The code supports use of JSON, JSON-B, JSON-C
and ASN.1 for header encoding, the container uses JSON-B frame
encoding because it has to support the read in either direction
property.

The original concept here was to provide an append only container
format that could be used as the basis for synchronizing Mesh portal
logs between nodes and also as an encryption format for end-to-end
encrypted Web sites. Static content is straightforward, but people
expect to be able to support applications like Web forums. The idea
was to see if we could support a Web forum run on a cloud server that
does not have the ability to read any of the content (yes).

The authentication scope is intentionally limited to the payloads, and
the signature parameters. The headers are not authenticated which
allows them to be mutable. A device may store the whole update as a
single file or break it apart into attachments. The latter approach
making garbage collection of unused attachments possible without a
separate sweep/collect cycle.


I am not sure that the encryption capability is needed for software
update but it might turn out to be useful allowing devices to be
shipped with code for a wide range of applications and only enabling
the specific modules required. I do not like devices to have more code
than is necessary for their purpose. Authentication is obviously
necessary.

The way I would see this applied to software update is that the
device/desktop would download and verify the incremental updates as a
background task (when bandwidth permits). It would then request user
permission to apply the update (if required) and set a flag internally
telling the loader to use the new version in place of the old. Any
processes that needed to be restarted would be restarted.

This could be used to effect updates across multiple devices at the
same time. It could also allow support for features such as testing
the configuration and performing an automatic rollback if the test
failed.


Besides providing a more secure process, this provides a better user experience.

The code required to support the container format is comparable to
that required to implement a SHA-2 or the like. implementation in a
TPM or such would be entirely feasible.


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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Phillip Hallam-Baker <phill@hallambaker.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Transactional updates
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Date: Tue, 24 Oct 2017 14:44:13 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/eEGrgX062SLEGixC5FwgsW-ThYY>
Subject: Re: [Suit] Transactional updates
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Hi PHP

Thanks for the contribution.

I am trying to find out what problem you are primarily trying to solve.  Yo=
u list lots of topics below. Let me start with one item where you write:

"I am fed up of the time it takes for software updates on my desktop. First=
 the update has to be downloaded and then it has to be installed. Why can't=
 this be instantaneous?"

Clearly, you cannot install software / firmware that has not been downloade=
d yet. You are not complaining about the slow transfer rate (although this =
might be a serious issue with many low power radio technologies). You aren'=
t talking about differential updates or updates of individual libraries. Fi=
nally, you are not asking for a hitless update either.

I feel like I am reading that you want to write the downloaded code directl=
y over the code that is being executed. That cannot be true either.

So, could you explain your first point in more detail?

Ciao
Hannes

-----Original Message-----
From: Suit [mailto:suit-bounces@ietf.org] On Behalf Of Phillip Hallam-Baker
Sent: 24 October 2017 15:31
To: suit@ietf.org
Subject: [Suit] Transactional updates

I don't know about you, but I am fed up of the time it takes for software u=
pdates on my desktop. First the update has to be downloaded and then it has=
 to be installed. Why can't this be instantaneous?

What I would like is to download the software update and then tell the O/S =
to simply overlay the update on top of the file system as an atomic operati=
on. So installing a software update takes a millisecond, no more.

Rolling back a software update is just a matter of telling the O/S to stop =
applying the overlay.

It seems to me that this sort of capability would be very useful at the dev=
ice level as well. Even more so as the chief concern in any software update=
 scheme is that you end up bricking a device. Building the ability to roll =
updates forwards and backwards is powerful.

I would also like this to be integrated into software signing and in an int=
elligent fashion so that the signature encompasses both the code and the da=
ta and it is possible to validate components independently.


There is of course going to be a cost and it is the need for storage.
The traditional file system organization is a response to highly constraine=
d storage. I have not yet fully considered space optimizations because I ha=
ve been thinking about the constrained device but I think my approach could=
 be modified for a fairly constrained device. My approach is not going to b=
e appropriate for your PIC controllers but it is definitely feasible at the=
 Arduino level and above.

My approach is based on a Merkle Tree based container format. This may soun=
d intimidating but it shouldn't be. I designed, documented and implemented =
the scheme in under a week:

https://tools.ietf.org/html/draft-hallambaker-jbcd-container-00

or in HTML with diagrams at

http://prismproof.org/Documents/draft-hallambaker-jbcd-container.html


The draft describes a container format that consists of a sequence of varia=
ble length chunks that has the property that the sequence can be traversed =
with equal efficiency in the forward and reverse directions.
This can optionally be indexed via a binary tree to allow random access to =
any frame in log(n) time. Chain and (Merkle) tree digests may be constructe=
d which may be signed.

Each frame consists of a header and an optional payload. The payload may be=
 encrypted and/or signed using JOSE. The only fixed requirement for the hea=
der encoding is that frame 0 has to have a header encoded in JSON (for inte=
rop). The code supports use of JSON, JSON-B, JSON-C and ASN.1 for header en=
coding, the container uses JSON-B frame encoding because it has to support =
the read in either direction property.

The original concept here was to provide an append only container format th=
at could be used as the basis for synchronizing Mesh portal logs between no=
des and also as an encryption format for end-to-end encrypted Web sites. St=
atic content is straightforward, but people expect to be able to support ap=
plications like Web forums. The idea was to see if we could support a Web f=
orum run on a cloud server that does not have the ability to read any of th=
e content (yes).

The authentication scope is intentionally limited to the payloads, and the =
signature parameters. The headers are not authenticated which allows them t=
o be mutable. A device may store the whole update as a single file or break=
 it apart into attachments. The latter approach making garbage collection o=
f unused attachments possible without a separate sweep/collect cycle.


I am not sure that the encryption capability is needed for software update =
but it might turn out to be useful allowing devices to be shipped with code=
 for a wide range of applications and only enabling the specific modules re=
quired. I do not like devices to have more code than is necessary for their=
 purpose. Authentication is obviously necessary.

The way I would see this applied to software update is that the device/desk=
top would download and verify the incremental updates as a background task =
(when bandwidth permits). It would then request user permission to apply th=
e update (if required) and set a flag internally telling the loader to use =
the new version in place of the old. Any processes that needed to be restar=
ted would be restarted.

This could be used to effect updates across multiple devices at the same ti=
me. It could also allow support for features such as testing the configurat=
ion and performing an automatic rollback if the test failed.


Besides providing a more secure process, this provides a better user experi=
ence.

The code required to support the container format is comparable to that req=
uired to implement a SHA-2 or the like. implementation in a TPM or such wou=
ld be entirely feasible.

_______________________________________________
Suit mailing list
Suit@ietf.org
https://www.ietf.org/mailman/listinfo/suit
IMPORTANT NOTICE: The contents of this email and any attachments are confid=
ential and may also be privileged. If you are not the intended recipient, p=
lease notify the sender immediately and do not disclose the contents to any=
 other person, use it for any purpose, or store or copy the information in =
any medium. Thank you.


From nobody Tue Oct 24 08:16:31 2017
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References: <CAMm+Lwiik1m+rLVd6mvf5LgSxFO34fsGUZ0+gz6m6bj8kpNYuQ@mail.gmail.com> <AM4PR0801MB2706F9611D2F99A89168AD36FA470@AM4PR0801MB2706.eurprd08.prod.outlook.com>
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Subject: Re: [Suit] Transactional updates
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On Tue, Oct 24, 2017 at 10:44 AM, Hannes Tschofenig
<Hannes.Tschofenig@arm.com> wrote:
> Hi PHP
>
> Thanks for the contribution.
>
> I am trying to find out what problem you are primarily trying to solve.  =
You list lots of topics below. Let me start with one item where you write:
>
> "I am fed up of the time it takes for software updates on my desktop. Fir=
st the update has to be downloaded and then it has to be installed. Why can=
't this be instantaneous?"
>
> Clearly, you cannot install software / firmware that has not been downloa=
ded yet. You are not complaining about the slow transfer rate (although thi=
s might be a serious issue with many low power radio technologies). You are=
n't talking about differential updates or updates of individual libraries. =
Finally, you are not asking for a hitless update either.


Lets look at the sequence of events

1) Download the software update
2) Unpack and write files to directories
3) Stop and restart processes or reboot.

Each of these need to occur obviously and in many cases user
permission is required at at least one point in the process. But the
user experience for the desktop right now is:

1) Informed there is an update
2) Pestered into downloading the update, promised it will be applied
automatically
3) Open machine to discover that the update could not be applied
because software I don't care about was running.
4) Apply the update manually
5) Wait 15 minutes
6) Use machine.

Another vendor has a different approach. I turn the machine on first
thing in the morning and it tells me it needs to start applying
updates.

Neither of these approaches is going to be remotely acceptable for IoT
because the whole point is to save time and you can't save time if you
are giving people systems administration tasks. IoT is the harder use
case with lower capability devices.

It has to be possible for the process to take place automatically and
transparently with the only input from the user (if any) being to
authorize roll forward to the new software or to force a rollback to
the old. So my preferred implementation would be

1) Detect and download update. This is done under prior user permission.
1a) Authenticate and validate.
2) Request user permission (if required, may be granted remotely)
3) Apply update atomically (may be scheduled)

4) Test (optional) Rollback if failed.


> I feel like I am reading that you want to write the downloaded code direc=
tly over the code that is being executed. That cannot be true either.

No. What I am saying is that the device acquires the updates and
stores them somewhere. Then it compiles whatever local index is
required to access them and switches from one index to the other as an
atomic operation.

We seem to be fixed in the 1970s notion of files in directories. This
is merely an abstraction what we have in storage is a sequence of
bits. If all we require is read access, we can store data in a zip
file and read it as efficiently as if it was a set of separate files
broken out on disk.

We have to run the reader code on the constrained device of course.
But file creation can take place on a real machine with real
resources.



> So, could you explain your first point in more detail?
>
> Ciao
> Hannes
>
> -----Original Message-----
> From: Suit [mailto:suit-bounces@ietf.org] On Behalf Of Phillip Hallam-Bak=
er
> Sent: 24 October 2017 15:31
> To: suit@ietf.org
> Subject: [Suit] Transactional updates
>
> I don't know about you, but I am fed up of the time it takes for software=
 updates on my desktop. First the update has to be downloaded and then it h=
as to be installed. Why can't this be instantaneous?
>
> What I would like is to download the software update and then tell the O/=
S to simply overlay the update on top of the file system as an atomic opera=
tion. So installing a software update takes a millisecond, no more.
>
> Rolling back a software update is just a matter of telling the O/S to sto=
p applying the overlay.
>
> It seems to me that this sort of capability would be very useful at the d=
evice level as well. Even more so as the chief concern in any software upda=
te scheme is that you end up bricking a device. Building the ability to rol=
l updates forwards and backwards is powerful.
>
> I would also like this to be integrated into software signing and in an i=
ntelligent fashion so that the signature encompasses both the code and the =
data and it is possible to validate components independently.
>
>
> There is of course going to be a cost and it is the need for storage.
> The traditional file system organization is a response to highly constrai=
ned storage. I have not yet fully considered space optimizations because I =
have been thinking about the constrained device but I think my approach cou=
ld be modified for a fairly constrained device. My approach is not going to=
 be appropriate for your PIC controllers but it is definitely feasible at t=
he Arduino level and above.
>
> My approach is based on a Merkle Tree based container format. This may so=
und intimidating but it shouldn't be. I designed, documented and implemente=
d the scheme in under a week:
>
> https://tools.ietf.org/html/draft-hallambaker-jbcd-container-00
>
> or in HTML with diagrams at
>
> http://prismproof.org/Documents/draft-hallambaker-jbcd-container.html
>
>
> The draft describes a container format that consists of a sequence of var=
iable length chunks that has the property that the sequence can be traverse=
d with equal efficiency in the forward and reverse directions.
> This can optionally be indexed via a binary tree to allow random access t=
o any frame in log(n) time. Chain and (Merkle) tree digests may be construc=
ted which may be signed.
>
> Each frame consists of a header and an optional payload. The payload may =
be encrypted and/or signed using JOSE. The only fixed requirement for the h=
eader encoding is that frame 0 has to have a header encoded in JSON (for in=
terop). The code supports use of JSON, JSON-B, JSON-C and ASN.1 for header =
encoding, the container uses JSON-B frame encoding because it has to suppor=
t the read in either direction property.
>
> The original concept here was to provide an append only container format =
that could be used as the basis for synchronizing Mesh portal logs between =
nodes and also as an encryption format for end-to-end encrypted Web sites. =
Static content is straightforward, but people expect to be able to support =
applications like Web forums. The idea was to see if we could support a Web=
 forum run on a cloud server that does not have the ability to read any of =
the content (yes).
>
> The authentication scope is intentionally limited to the payloads, and th=
e signature parameters. The headers are not authenticated which allows them=
 to be mutable. A device may store the whole update as a single file or bre=
ak it apart into attachments. The latter approach making garbage collection=
 of unused attachments possible without a separate sweep/collect cycle.
>
>
> I am not sure that the encryption capability is needed for software updat=
e but it might turn out to be useful allowing devices to be shipped with co=
de for a wide range of applications and only enabling the specific modules =
required. I do not like devices to have more code than is necessary for the=
ir purpose. Authentication is obviously necessary.
>
> The way I would see this applied to software update is that the device/de=
sktop would download and verify the incremental updates as a background tas=
k (when bandwidth permits). It would then request user permission to apply =
the update (if required) and set a flag internally telling the loader to us=
e the new version in place of the old. Any processes that needed to be rest=
arted would be restarted.
>
> This could be used to effect updates across multiple devices at the same =
time. It could also allow support for features such as testing the configur=
ation and performing an automatic rollback if the test failed.
>
>
> Besides providing a more secure process, this provides a better user expe=
rience.
>
> The code required to support the container format is comparable to that r=
equired to implement a SHA-2 or the like. implementation in a TPM or such w=
ould be entirely feasible.
>
> _______________________________________________
> Suit mailing list
> Suit@ietf.org
> https://www.ietf.org/mailman/listinfo/suit
> IMPORTANT NOTICE: The contents of this email and any attachments are conf=
idential and may also be privileged. If you are not the intended recipient,=
 please notify the sender immediately and do not disclose the contents to a=
ny other person, use it for any purpose, or store or copy the information i=
n any medium. Thank you.


From nobody Tue Oct 24 08:58:50 2017
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Subject: Re: [Suit] Transactional updates
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From: Alexander Pelov <alexander@ackl.io>
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Date: Tue, 24 Oct 2017 18:34:23 +0200
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Cc: Suhas Nandakumar <suhasietf@gmail.com>, "suit@ietf.org" <suit@ietf.org>
To: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
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Subject: Re: [Suit] Firmware Transport Protocol
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Hi Hannes,


> Le 24 oct. 2017 =C3=A0 12:59, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com> a =C3=A9crit :
>=20
> Hi Alexander,
> =20
> Great! So I think we can converge on the YANG part and if necessary we =
can work on it together (there will probably be a YoT side meeting =
during IETF 100, so we can actually try to prepare this ahead of the =
BoF?)
> =20
> Sounds good.
> =20
> On the encoding: we=E2=80=99re using CBOR in the application layer, so =
there are already CBOR encoders in place.=20
> I am not sure if we can actually live without ASN.1 (e.g. if we =
don=E2=80=99t need X.501 certificates and all the rest)..
> =20
> You would need COSE in addition since CBOR itself just defines the =
encoding.
> =20
> Currently our description explains what we had implemented and the =
solution is based on asymmetric crypto and the use of X.509 =
certificates. While it is possible to use raw public keys our experience =
with the industrial sector has been that they are somewhat conservative =
and want to re-use their existing infrastructure. When you use X.509 =
certs then you will also have an ASN.1 parser. Even if you use COSE you =
are most likely going to have an ASN.1 parser since the requirements for =
X.509 certs will not magically go away when you switch to a different =
encoding.
> =20
> As a consequence, yo you will have to implement COSE, CBOR, and the =
ASN.1 parser. Furthermore, the functionality of a firmware update =
mechanism makes it quite security sensitive and hence you will put the =
code into the bootloader (Brendan provided more details in earlier email =
exchanges on the FUD list). ASN.1 parsers are widely available (since =
they are part of every security stack these days) and their quality is =
quite high.=20
> =20
> We raised the question about the use of symmetric key cryptography =
since this is something we had mixed feelings about but nobody =
responded. On one hand it is a more efficient mechanism but on the other =
hand it provides weaker security properties.
> =20
> But this actually brings up an interesting question:
> - What are the requirements for the manifest file=20
> (because, if you but ASN.1 or CBOR there, then it becomes a MUST for =
the end-device to support it)
> =20
> Could you explain your question a bit more?

Thanks for the detailed explanation. Actually it is what I meant by =
saying about the =E2=80=98MUST=E2=80=99 statement.

The question is, will a device which supports SUIT be required to =
implement X.501 certificates? (I am not against - I like them quite a =
lot).
Another way to say it - what is the scope of SUIT? Is it X.509-only =
based firmware update system for IoT? (including the future architecture =
that will be defined and so forth)?

Are we going to start with X.509 and then add other as we continue?

Is the focus primarily on the Manifest file (and thus, the importance to =
chose one path), or is it on the process (and thus potentially allow for =
several mechanisms)?

I don=E2=80=99t think we should make a complex solution - and I would =
encourage a simple one that works. I think it would benefit if we try to =
narrow down before / during the BoF on these points.

++
Alexander


> =20
> Ciao
> Hannes
> =20
> =20
> =20
> ++
> Alexander
> =20
> =20
> =20
> Le 24 oct. 2017 =C3=A0 12:39, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com <mailto:Hannes.Tschofenig@arm.com>> a =C3=A9cri=
t :
> =20
> Hi Alexander,
> =20
> we have actually thought about exactly doing the same as well (in the =
anticipation that the usual encoding discussion comes up). =
Unfortunately, our Yang language expertise is a bit limited. (Note that =
our interest was really only in Yang as a language for describing the =
format rather than in anything else.)
> =20
> While the encoding appears to be a fundamental thing it is actually =
just a distraction from discussing the semantics of the fields and the =
security stuff.
> =20
> Regarding your preference for CBOR I will ask you the same question as =
I did to Suhas: do you have actually any reasons?
> =20
> Ciao
> Hannes
> =20
> From: Alexander Pelov [mailto:alexander@ackl.io =
<mailto:alexander@ackl.io>]=20
> Sent: 24 October 2017 11:09
> To: Hannes Tschofenig
> Cc: suit@ietf.org <mailto:suit@ietf.org>; Suhas Nandakumar
> Subject: Re: [Suit] Firmware Transport Protocol
> =20
> Oh, I see, sounds good !
> =20
> For information - during the last Yang of Things meeting (which very =
unfortunately was in the same time slot as FUD), we discussed the use of =
YANG model for this description. (the manifest file then can be =
expressed in CBOR, XML, or JSON.. (I=E2=80=99ll be tempted to default to =
CBOR).
> =20
> Do you think this could be something of interest for the BoF and for =
the follow-up of Suit ?
> =20
> Alexander
> =20
> =20
> =20
> =20
> =20
> Le 24 oct. 2017 =C3=A0 10:28, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com <mailto:Hannes.Tschofenig@arm.com>> a =C3=A9cri=
t :
> =20
> =C3=98  Thanks for the quick reply! Ok, I think I understand a little =
bit better.
> =20
> =C3=98  So, it=E2=80=99s about the File Format that contains the =
firmware? (so that we have nice things, such as signing, verification, =
delta-updates, and so forth ?)
> =20
> Yes, it is pretty easy to understand. Just try to implement a firmware =
update mechanism and you will notice that the security part is the =
complex part. That=E2=80=99s probably not super surprising since we made =
this observation already numerous times already with other work in the =
IETF.
> =20
> If you want to know the details of what we have implemented, just take =
a look at https://tools.ietf.org/html/draft-moran-fud-manifest-00 =
<https://tools.ietf.org/html/draft-moran-fud-manifest-00>. As mentioned =
earlier, we are polishing our code right now and will release it as open =
source (Apache 2 license).
> =20
> Ciao
> Hannes
> =20
> Alexander
> =20
> =20
> Le 24 oct. 2017 =C3=A0 09:56, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com <mailto:Hannes.Tschofenig@arm.com>> a =C3=A9cri=
t :
> =20
> Hi Alexander,
> =20
> I believe the work has to start somewhere.
> =20
> What do we have today?
> =20
> If you are using a general purpose OS, like Linux, then there are lots =
of software/firmware update mechanisms available. I know that there are =
still problems with using them on devices like home routers but those =
problems are often related to non-technical aspects, such as =
discontinued support or pushing updates through the long value chain. =
(This problem has even been recognized with smart phones.)
> =20
> Furthermore, there are also various =E2=80=9Ctransports=E2=80=9D for =
getting a firmware image from A-to-B.
> =20
> Hence, I had suggested to focus on the gaps that exist today, namely a =
standardized firmware format for use with low end IoT devices.
> Before we started our implementation work more than 2 years ago there =
was not much available in terms of standardized formats. Hence, we used =
RFC 4108 as a starting point.=20
> =20
> If we manage to complete this part of the work we will then be able to =
use it with a number of transports. Cisco may prefer a HTTPS based =
communication with the firmware update server pre-configured. We =
continue use our LwM2M approach with CoAP. Maybe someone else will =
switch to QUIC in the future or (as some of the low power WAN guys do) =
just shuffle it over their radio without using IP.
> =20
> Does this make sense?
> =20
> Ciao
> Hannes
> =20
> =20
> From: Alexander Pelov [mailto:alexander@ackl.io =
<mailto:alexander@ackl.io>]=20
> Sent: 24 October 2017 09:45
> To: Hannes Tschofenig
> Cc: Suhas Nandakumar; suit@ietf.org <mailto:suit@ietf.org>
> Subject: Re: [Suit] Firmware Transport Protocol
> =20
> Dear Hannes,
> =20
> Thanks for clarifying some of the points and for getting the work =
started!
> =20
> Just for my understanding, if I over-simplify, the goal si to define a =
manifest format (will all the behavior that is related to it) necessary =
to perform secure firmware update for IoT, is this correct?
> =20
> (I imagine the way bindings are defined to the actual L2/L3 protocols =
that perform the update would be defined in the manifest file)
> =20
> Best,
> Alexander
> =20
> =20
> =20
> Le 24 oct. 2017 =C3=A0 09:20, Hannes Tschofenig =
<Hannes.Tschofenig@arm.com <mailto:Hannes.Tschofenig@arm.com>> a =C3=A9cri=
t :
> =20
> Hi Suhas,
> =20
> The beauty of the charter text is that it already allows any transport =
mechanism to be used.
> =20
> While home routers use HTTP and TFTP lower end IoT devices use CoAP or =
distribute the firmware images directly over the link layer protocol. =
See, for example, a recent write-up from my co-worker where he is using =
the firmware manifest we described and implemented over LoRa with =
differential updates: =
https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-updates/ =
<https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-updates/>
> =20
> Ciao
> Hannes
> =20
> From: Suit [mailto:suit-bounces@ietf.org =
<mailto:suit-bounces@ietf.org>] On Behalf Of Suhas Nandakumar
> Sent: 24 October 2017 07:32
> To: suit@ietf.org <mailto:suit@ietf.org>
> Subject: [Suit] Firmware Transport Protocol
> =20
> =20
> On the protocol to transport firmware, the vast majority of firmware =
updates we see  the industry using run over tftp and http with perhaps =
coap in the future. We think the charter need to explicitly allow for a =
design that allows any one of those three to be use by the IoT device =
and is to be clear how they are each used.=20
> =20
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you. =
_______________________________________________
> Suit mailing list
> Suit@ietf.org <mailto:Suit@ietf.org>
> https://www.ietf.org/mailman/listinfo/suit =
<https://www.ietf.org/mailman/listinfo/suit>
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you.
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you. =
_______________________________________________
> Suit mailing list
> Suit@ietf.org <mailto:Suit@ietf.org>
> https://www.ietf.org/mailman/listinfo/suit =
<https://www.ietf.org/mailman/listinfo/suit>
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you.
> =20
> IMPORTANT NOTICE: The contents of this email and any attachments are =
confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank =
you._______________________________________________
> Suit mailing list
> Suit@ietf.org <mailto:Suit@ietf.org>
> https://www.ietf.org/mailman/listinfo/suit =
<https://www.ietf.org/mailman/listinfo/suit>

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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">Hi Hannes,<div class=3D""><br class=3D""></div><div =
class=3D""><br class=3D""><div><blockquote type=3D"cite" class=3D""><div =
class=3D"">Le 24 oct. 2017 =C3=A0 12:59, Hannes Tschofenig &lt;<a =
href=3D"mailto:Hannes.Tschofenig@arm.com" =
class=3D"">Hannes.Tschofenig@arm.com</a>&gt; a =C3=A9crit :</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div =
class=3D"WordSection1" style=3D"page: WordSection1; font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Hi Alexander,<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D"">Great! So I think we can converge on the YANG part =
and if necessary we can work on it together (there will probably be a =
YoT side meeting during IETF 100, so we can actually try to prepare this =
ahead of the BoF?)<o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D""><o:p class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Sounds good.<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">On the encoding: we=E2=80=99re using CBOR =
in the application layer, so there are already CBOR encoders in =
place.&nbsp;<o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">I am not sure if we can actually live =
without ASN.1 (e.g. if we don=E2=80=99t need X.501 certificates and all =
the rest)..<o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"color: rgb(31, 73, 125);" =
class=3D""><o:p class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">You would need COSE in =
addition since CBOR itself just defines the encoding.<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Currently our =
description explains what we had implemented and the solution is based =
on asymmetric crypto and the use of X.509 certificates. While it is =
possible to use raw public keys our experience with the industrial =
sector has been that they are somewhat conservative and want to re-use =
their existing infrastructure. When you use X.509 certs then you will =
also have an ASN.1 parser. Even if you use COSE you are most likely =
going to have an ASN.1 parser since the requirements for X.509 certs =
will not magically go away when you switch to a different encoding.<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">As a consequence, yo =
you will have to implement COSE, CBOR, and the ASN.1 parser. =
Furthermore, the functionality of a firmware update mechanism makes it =
quite security sensitive and hence you will put the code into the =
bootloader (Brendan provided more details in earlier email exchanges on =
the FUD list). ASN.1 parsers are widely available (since they are part =
of every security stack these days) and their quality is quite =
high.<span class=3D"Apple-converted-space">&nbsp;</span><o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">We raised the question =
about the use of symmetric key cryptography since this is something we =
had mixed feelings about but nobody responded. On one hand it is a more =
efficient mechanism but on the other hand it provides weaker security =
properties.<o:p class=3D""></o:p></span></div><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">But this actually brings up an =
interesting question:<o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">- What are the =
requirements for the manifest file&nbsp;<o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">(because, if you but ASN.1 or CBOR there, then it becomes a =
MUST for the end-device to support it)<o:p class=3D""></o:p></div><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"color: rgb(31, 73, 125);" =
class=3D""><o:p class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Could you explain your =
question a bit more?</span></div></div></div></div></blockquote><div><br =
class=3D""></div><div>Thanks for the detailed explanation. Actually it =
is what I meant by saying about the =E2=80=98MUST=E2=80=99 =
statement.</div><div><br class=3D""></div><div>The question is, will a =
device which supports SUIT be required to implement X.501 certificates? =
(I am not against - I like them quite a lot).</div><div>Another way to =
say it - what is the scope of SUIT? Is it X.509-only based firmware =
update system for IoT? (including the future architecture that will be =
defined and so forth)?</div><div><br class=3D""></div><div>Are we going =
to start with X.509 and then add other as we continue?</div><div><br =
class=3D""></div><div>Is the focus primarily on the Manifest file (and =
thus, the importance to chose one path), or is it on the process (and =
thus potentially allow for several mechanisms)?</div><div><br =
class=3D""></div><div>I don=E2=80=99t think we should make a complex =
solution - and I would encourage a simple one that works. I think it =
would benefit if we try to narrow down before / during the BoF on these =
points.</div><div><br =
class=3D""></div><div>++</div><div>Alexander</div><div><br =
class=3D""></div><br class=3D""><blockquote type=3D"cite" class=3D""><div =
class=3D""><div class=3D"WordSection1" style=3D"page: WordSection1; =
font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p class=3D""></o:p></span></div><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D""><o:p class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Ciao<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hannes<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D"">++<o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">Alexander<o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><o:p class=3D"">&nbsp;</o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div></div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><o:p class=3D"">&nbsp;</o:p></div><div class=3D""><blockquote =
style=3D"margin-top: 5pt; margin-bottom: 5pt;" class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">Le 24 oct. 2017 =C3=A0 =
12:39, Hannes Tschofenig &lt;<a href=3D"mailto:Hannes.Tschofenig@arm.com" =
style=3D"color: purple; text-decoration: underline;" =
class=3D"">Hannes.Tschofenig@arm.com</a>&gt; a =C3=A9crit :<o:p =
class=3D""></o:p></div></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D"">Hi =
Alexander,</span><o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">we have actually thought about exactly =
doing the same as well (in the anticipation that the usual encoding =
discussion comes up). Unfortunately, our Yang language expertise is a =
bit limited. (Note that our interest was really only in Yang as a =
language for describing the format rather than in anything =
else.)</span><o:p class=3D""></o:p></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">While the encoding appears to be a =
fundamental thing it is actually just a distraction from discussing the =
semantics of the fields and the security stuff.</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Regarding your =
preference for CBOR I will ask you the same question as I did to Suhas: =
do you have actually any reasons?</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Ciao</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Hannes</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div><div class=3D""><div style=3D"border-style: =
solid none none; border-top-width: 1pt; border-top-color: rgb(181, 196, =
223); padding: 3pt 0cm 0cm;" class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><b class=3D""><span lang=3D"EN-US" =
style=3D"font-size: 10pt; font-family: Tahoma, sans-serif;" =
class=3D"">From:</span></b><span class=3D"apple-converted-space"><span =
lang=3D"EN-US" style=3D"font-size: 10pt; font-family: Tahoma, =
sans-serif;" class=3D"">&nbsp;</span></span><span lang=3D"EN-US" =
style=3D"font-size: 10pt; font-family: Tahoma, sans-serif;" =
class=3D"">Alexander Pelov [<a href=3D"mailto:alexander@ackl.io" =
style=3D"color: purple; text-decoration: underline;" =
class=3D"">mailto:alexander@ackl.io</a>]<span =
class=3D"apple-converted-space">&nbsp;</span><br class=3D""><b =
class=3D"">Sent:</b><span class=3D"apple-converted-space">&nbsp;</span>24 =
October 2017 11:09<br class=3D""><b class=3D"">To:</b><span =
class=3D"apple-converted-space">&nbsp;</span>Hannes Tschofenig<br =
class=3D""><b class=3D"">Cc:</b><span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"mailto:suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D"">suit@ietf.org</a>; Suhas Nandakumar<br =
class=3D""><b class=3D"">Subject:</b><span =
class=3D"apple-converted-space">&nbsp;</span>Re: [Suit] Firmware =
Transport Protocol</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Oh, I see, sounds good !<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">For information - during the last Yang of =
Things meeting (which very unfortunately was in the same time slot as =
FUD), we discussed the use of YANG model for this description. (the =
manifest file then can be expressed in CBOR, XML, or JSON.. (I=E2=80=99ll =
be tempted to default to CBOR).<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Do you think this could be something of =
interest for the BoF and for the follow-up of Suit ?<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Alexander<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D"">&nbsp;<o:p class=3D""></o:p></div></div><div =
class=3D""><blockquote style=3D"margin-top: 5pt; margin-bottom: 5pt;" =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">Le 24 oct. 2017 =C3=A0 10:28, Hannes Tschofenig &lt;<a =
href=3D"mailto:Hannes.Tschofenig@arm.com" style=3D"color: purple; =
text-decoration: underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">Hannes.Tschofenig@arm.com</span></a>&gt; a =C3=A9crit :<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D"">&nbsp;<o:p class=3D""></o:p></div></div><div =
class=3D""><div style=3D"margin-left: 36pt;" class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif; text-indent: -18pt;" =
class=3D""><span style=3D"font-family: Wingdings; color: rgb(31, 73, =
125);" class=3D"">=C3=98</span><span style=3D"font-size: 7pt; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;<span =
class=3D"apple-converted-space">&nbsp;</span></span>Thanks for the quick =
reply! Ok, I think I understand a little bit better.<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div><div style=3D"margin-left: 36pt;" =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif; text-indent: =
-18pt;" class=3D""><span style=3D"font-family: Wingdings; color: rgb(31, =
73, 125);" class=3D"">=C3=98</span><span style=3D"font-size: 7pt; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;<span =
class=3D"apple-converted-space">&nbsp;</span></span>So, it=E2=80=99s =
about the File Format that contains the firmware? (so that we have nice =
things, such as signing, verification, delta-updates, and so forth =
?)<o:p class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">Yes, it is pretty easy to understand. Just try to implement a =
firmware update mechanism and you will notice that the security part is =
the complex part. That=E2=80=99s probably not super surprising since we =
made this observation already numerous times already with other work in =
the IETF.</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=3D"">If =
you want to know the details of what we have implemented, just take a =
look at<span class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"https://tools.ietf.org/html/draft-moran-fud-manifest-00" =
style=3D"color: purple; text-decoration: underline;" class=3D""><span =
style=3D"color: purple;" =
class=3D"">https://tools.ietf.org/html/draft-moran-fud-manifest-00</span><=
/a>. As mentioned earlier, we are polishing our code right now and will =
release it as open source (Apache 2 license).</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Ciao<br class=3D"">Hannes</span><o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p class=3D""></o:p></div></div></div></div><div=
 class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm =
0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">Alexander<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div><div =
class=3D""><blockquote style=3D"margin-top: 5pt; margin-bottom: 5pt;" =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Le 24 oct. 2017 =C3=A0 09:56, Hannes =
Tschofenig &lt;<a href=3D"mailto:Hannes.Tschofenig@arm.com" =
style=3D"color: purple; text-decoration: underline;" class=3D""><span =
style=3D"color: purple;" =
class=3D"">Hannes.Tschofenig@arm.com</span></a>&gt; a =C3=A9crit :<o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div><div class=3D""><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hi Alexander,</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">I believe the work has to start =
somewhere.</span><o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">What do we have today?</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">If you are using a general purpose OS, =
like Linux, then there are lots of software/firmware update mechanisms =
available. I know that there are still problems with using them on =
devices like home routers but those problems are often related to =
non-technical aspects, such as discontinued support or pushing updates =
through the long value chain. (This problem has even been recognized =
with smart phones.)</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Furthermore, there are also various =
=E2=80=9Ctransports=E2=80=9D for getting a firmware image from =
A-to-B.</span><o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hence, I had suggested to focus on the =
gaps that exist today, namely a standardized firmware format for use =
with low end IoT devices.</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Before we started our implementation work =
more than 2 years ago there was not much available in terms of =
standardized formats. Hence, we used RFC 4108 as a starting point.<span =
class=3D"apple-converted-space">&nbsp;</span></span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">If we manage to complete this part of the =
work we will then be able to use it with a number of transports. Cisco =
may prefer a HTTPS based communication with the firmware update server =
pre-configured. We continue use our LwM2M approach with CoAP. Maybe =
someone else will switch to QUIC in the future or (as some of the low =
power WAN guys do) just shuffle it over their radio without using =
IP.</span><o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Does this make sense?</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Ciao</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hannes</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div><div class=3D""><div =
style=3D"border-style: solid none none; border-top-width: 1pt; =
border-top-color: rgb(181, 196, 223); padding: 3pt 0cm 0cm;" =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><b class=3D""><span lang=3D"EN-US" =
style=3D"font-size: 10pt; font-family: Tahoma, sans-serif;" =
class=3D"">From:</span></b><span class=3D"apple-converted-space"><span =
lang=3D"EN-US" style=3D"font-size: 10pt; font-family: Tahoma, =
sans-serif;" class=3D"">&nbsp;</span></span><span lang=3D"EN-US" =
style=3D"font-size: 10pt; font-family: Tahoma, sans-serif;" =
class=3D"">Alexander Pelov [<a href=3D"mailto:alexander@ackl.io" =
style=3D"color: purple; text-decoration: underline;" class=3D""><span =
style=3D"color: purple;" =
class=3D"">mailto:alexander@ackl.io</span></a>]<span =
class=3D"apple-converted-space">&nbsp;</span><br class=3D""><b =
class=3D"">Sent:</b><span class=3D"apple-converted-space">&nbsp;</span>24 =
October 2017 09:45<br class=3D""><b class=3D"">To:</b><span =
class=3D"apple-converted-space">&nbsp;</span>Hannes Tschofenig<br =
class=3D""><b class=3D"">Cc:</b><span =
class=3D"apple-converted-space">&nbsp;</span>Suhas Nandakumar;<span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"mailto:suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">suit@ietf.org</span></a><br class=3D""><b =
class=3D"">Subject:</b><span =
class=3D"apple-converted-space">&nbsp;</span>Re: [Suit] Firmware =
Transport Protocol</span><o:p =
class=3D""></o:p></div></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Dear Hannes,<o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Thanks for clarifying some of the points =
and for getting the work started!<o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Just for my understanding, if I =
over-simplify, the goal si to define a manifest format (will all the =
behavior that is related to it) necessary to perform secure firmware =
update for IoT, is this correct?<o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">(I imagine the way bindings are defined =
to the actual L2/L3 protocols that perform the update would be defined =
in the manifest file)<o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">Best,<o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">Alexander<o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><blockquote style=3D"margin-top: 5pt; margin-bottom: 5pt;" =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">Le 24 oct. 2017 =C3=A0 =
09:20, Hannes Tschofenig &lt;<a href=3D"mailto:Hannes.Tschofenig@arm.com" =
style=3D"color: purple; text-decoration: underline;" class=3D""><span =
style=3D"color: purple;" =
class=3D"">Hannes.Tschofenig@arm.com</span></a>&gt; a =C3=A9crit :<o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif; color: =
rgb(31, 73, 125);" class=3D"">Hi Suhas,</span><o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">The beauty of the =
charter text is that it already allows any transport mechanism to be =
used.</span><o:p class=3D""></o:p></div></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D""><span style=3D"font-size: 11pt; =
font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" =
class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">While home routers use =
HTTP and TFTP lower end IoT devices use CoAP or distribute the firmware =
images directly over the link layer protocol. See, for example, a recent =
write-up from my co-worker where he is using the firmware manifest we =
described and implemented over LoRa with differential updates:<span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-upda=
tes/" style=3D"color: purple; text-decoration: underline;" =
class=3D""><span style=3D"color: purple;" =
class=3D"">https://os.mbed.com/blog/entry/towards-fota-lora-crypto-delta-u=
pdates/</span></a></span><o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Ciao</span><o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">Hannes</span><o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif; color: rgb(31, 73, 125);" class=3D"">&nbsp;</span><o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><b class=3D""><span lang=3D"EN-US" style=3D"font-size: 10pt; =
font-family: Tahoma, sans-serif;" class=3D"">From:</span></b><span =
class=3D"apple-converted-space"><span lang=3D"EN-US" style=3D"font-size: =
10pt; font-family: Tahoma, sans-serif;" =
class=3D"">&nbsp;</span></span><span lang=3D"EN-US" style=3D"font-size: =
10pt; font-family: Tahoma, sans-serif;" class=3D"">Suit [<a =
href=3D"mailto:suit-bounces@ietf.org" style=3D"color: purple; =
text-decoration: underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">mailto:suit-bounces@ietf.org</span></a>]<span =
class=3D"apple-converted-space">&nbsp;</span><b class=3D"">On Behalf =
Of<span class=3D"apple-converted-space">&nbsp;</span></b>Suhas =
Nandakumar<br class=3D""><b class=3D"">Sent:</b><span =
class=3D"apple-converted-space">&nbsp;</span>24 October 2017 07:32<br =
class=3D""><b class=3D"">To:</b><span =
class=3D"apple-converted-space">&nbsp;</span><a =
href=3D"mailto:suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">suit@ietf.org</span></a><br class=3D""><b =
class=3D"">Subject:</b><span =
class=3D"apple-converted-space">&nbsp;</span>[Suit] Firmware Transport =
Protocol</span><o:p class=3D""></o:p></div></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 11pt; font-family: Arial, =
sans-serif;" class=3D"">On the protocol to transport firmware, the vast =
majority of firmware updates we see&nbsp; the industry using run over =
tftp and http with perhaps coap in the future. We think the charter need =
to explicitly allow for a design that allows any one of those three to =
be use by the IoT device and is to be clear how they are each =
used.&nbsp;</span><o:p class=3D""></o:p></div></div></div></div></div><div=
 class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div></div></div></div><div class=3D""><div =
class=3D""><div class=3D""><div class=3D""><div class=3D""><div =
style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times =
New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div></div></div></div></div></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D""><span style=3D"font-size: 9pt; font-family: Helvetica, =
sans-serif;" class=3D"">IMPORTANT NOTICE: The contents of this email and =
any attachments are confidential and may also be privileged. If you are =
not the intended recipient, please notify the sender immediately and do =
not disclose the contents to any other person, use it for any purpose, =
or store or copy the information in any medium. Thank you.<span =
class=3D"apple-converted-space">&nbsp;</span>_____________________________=
__________________<br class=3D"">Suit mailing list<br class=3D""></span><a=
 href=3D"mailto:Suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D""><span style=3D"font-size: 9pt; font-family: =
Helvetica, sans-serif; color: purple;" =
class=3D"">Suit@ietf.org</span></a><span style=3D"font-size: 9pt; =
font-family: Helvetica, sans-serif;" class=3D""><br class=3D""></span><a =
href=3D"https://www.ietf.org/mailman/listinfo/suit" style=3D"color: =
purple; text-decoration: underline;" class=3D""><span style=3D"font-size: =
9pt; font-family: Helvetica, sans-serif; color: purple;" =
class=3D"">https://www.ietf.org/mailman/listinfo/suit</span></a><o:p =
class=3D""></o:p></div></div></div></div></div></blockquote></div><div =
class=3D""><div class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 9pt; font-family: Helvetica, sans-serif;" =
class=3D"">IMPORTANT NOTICE: The contents of this email and any =
attachments are confidential and may also be privileged. If you are not =
the intended recipient, please notify the sender immediately and do not =
disclose the contents to any other person, use it for any purpose, or =
store or copy the information in any medium. Thank you.</span><o:p =
class=3D""></o:p></div></div></div></div></blockquote></div><div =
class=3D""><div class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" =
class=3D"">&nbsp;<o:p class=3D""></o:p></div></div></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 9pt; font-family: Helvetica, sans-serif;" =
class=3D"">IMPORTANT NOTICE: The contents of this email and any =
attachments are confidential and may also be privileged. If you are not =
the intended recipient, please notify the sender immediately and do not =
disclose the contents to any other person, use it for any purpose, or =
store or copy the information in any medium. Thank you.<span =
class=3D"apple-converted-space">&nbsp;</span>_____________________________=
__________________<br class=3D"">Suit mailing list<br class=3D""><a =
href=3D"mailto:Suit@ietf.org" style=3D"color: purple; text-decoration: =
underline;" class=3D""><span style=3D"color: purple;" =
class=3D"">Suit@ietf.org</span></a><br class=3D""><a =
href=3D"https://www.ietf.org/mailman/listinfo/suit" style=3D"color: =
purple; text-decoration: underline;" class=3D""><span style=3D"color: =
purple;" =
class=3D"">https://www.ietf.org/mailman/listinfo/suit</span></a></span><o:=
p class=3D""></o:p></div></div></div></blockquote></div><div =
class=3D""><div style=3D"margin: 0cm 0cm 0.0001pt; font-size: 12pt; =
font-family: 'Times New Roman', serif;" class=3D"">&nbsp;<o:p =
class=3D""></o:p></div></div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', serif;" class=3D""><span =
style=3D"font-size: 9pt; font-family: Helvetica, sans-serif;" =
class=3D"">IMPORTANT NOTICE: The contents of this email and any =
attachments are confidential and may also be privileged. If you are not =
the intended recipient, please notify the sender immediately and do not =
disclose the contents to any other person, use it for any purpose, or =
store or copy the information in any medium. Thank you.</span><o:p =
class=3D""></o:p></div></div></blockquote></div><div style=3D"margin: =
0cm 0cm 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', =
serif;" class=3D""><o:p class=3D"">&nbsp;</o:p></div></div><span =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; =
display: inline !important;" class=3D"">IMPORTANT NOTICE: The contents =
of this email and any attachments are confidential and may also be =
privileged. If you are not the intended recipient, please notify the =
sender immediately and do not disclose the contents to any other person, =
use it for any purpose, or store or copy the information in any medium. =
Thank you.</span><span style=3D"font-family: Helvetica; font-size: 12px; =
font-style: normal; font-variant-caps: normal; font-weight: normal; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; float: none; display: inline =
!important;" =
class=3D"">_______________________________________________</span><br =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" =
class=3D""><span style=3D"font-family: Helvetica; font-size: 12px; =
font-style: normal; font-variant-caps: normal; font-weight: normal; =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; float: none; display: inline =
!important;" class=3D"">Suit mailing list</span><br style=3D"font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=3D""><a =
href=3D"mailto:Suit@ietf.org" style=3D"color: purple; text-decoration: =
underline; font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-indent: 0px; text-transform: =
none; white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" =
class=3D"">Suit@ietf.org</a><br style=3D"font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=3D""><a =
href=3D"https://www.ietf.org/mailman/listinfo/suit" style=3D"color: =
purple; text-decoration: underline; font-family: Helvetica; font-size: =
12px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-indent: 0px; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-size-adjust: auto; =
-webkit-text-stroke-width: 0px;" =
class=3D"">https://www.ietf.org/mailman/listinfo/suit</a></div></blockquot=
e></div><br class=3D""></div></body></html>=

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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Alexander Pelov <alexander@ackl.io>
CC: Suhas Nandakumar <suhasietf@gmail.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Firmware Transport Protocol
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/IjPVTCemkqUEfflaeORot3H7jXY>
Subject: Re: [Suit] Firmware Transport Protocol
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Date: Tue, 24 Oct 2017 11:46:43 -0700
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Subject: [Suit] Spencer Dawkins' Yes on charter-ietf-suit-00-01: (with COMMENT)
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Spencer Dawkins has entered the following ballot position for
charter-ietf-suit-00-01: Yes

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The document, along with other ballot positions, can be found here:
https://datatracker.ietf.org/doc/charter-ietf-suit/



----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

I think s/has lead to/has led to/. English is an imperfect written language.



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From: Suhas Nandakumar <suhasietf@gmail.com>
Date: Tue, 24 Oct 2017 14:25:50 -0700
Message-ID: <CAMRcRGT+Fdp9n82MnMcudDukjPKKDVdR=Yi1UvAFBvWd3bat6A@mail.gmail.com>
To: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
Cc: "suit@ietf.org" <suit@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/YkZZnbAkxmT3Uf4NguJoEdUtL5M>
Subject: Re: [Suit] Firmware Server Discovery
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--001a1145761a54528c055c519523
Content-Type: text/plain; charset="UTF-8"

Hi Hannes

    I do see a need for using other transport protocols to download the
firmware, however we want this solution to work on the Internet. As long as
we can have something to that effect, we are happy to live with other
protocols too, given various deployment options.

Thanks
Suhas

On Tue, Oct 24, 2017 at 12:11 AM, Hannes Tschofenig <
Hannes.Tschofenig@arm.com> wrote:

> Hi Suhas,
>
>
>
> The details of how to find the server for downloading a firmware image
> depend on the deployment and the protocols being used.
>
> For example, we use LwM2M for the transport and for discovery.
>
>
>
> The charter is specifically written to give flexibility. For example,
> someone deploying BLE devices that are connected using a smart phone app
> can use their infrastructure to push firmware images to devices.
>
>
>
> Keeping the work focused will also help to ensure that we get somewhere.
>
>
>
> Ciao
>
> Hannes
>
>
>
>
>
> *From:* Suit [mailto:suit-bounces@ietf.org] *On Behalf Of *Suhas
> Nandakumar
> *Sent:* 24 October 2017 02:37
> *To:* suit@ietf.org
> *Subject:* [Suit] Firmware Server Discovery
>
>
>
> Hello All,
>
>
>
> Finding out where to download firmware and that there is firmware
> available is a key part of download the firmware and impacts the design of
> the manifest.
>
>
>
> We think selecting a simple approach to this needs to be included in scope
> of the charter
>
>
>
> Thanks
>
> Suhas
> IMPORTANT NOTICE: The contents of this email and any attachments are
> confidential and may also be privileged. If you are not the intended
> recipient, please notify the sender immediately and do not disclose the
> contents to any other person, use it for any purpose, or store or copy the
> information in any medium. Thank you.
>

--001a1145761a54528c055c519523
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Hannes<div><br></div><div>=C2=A0 =C2=A0 I do see a need=
 for using other transport protocols to download the firmware, however we w=
ant this solution to work on the Internet. As long as we can have something=
 to that effect, we are happy to live with other protocols too, given vario=
us deployment options.</div><div><br></div><div>Thanks</div><div>Suhas</div=
></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Tue, Oc=
t 24, 2017 at 12:11 AM, Hannes Tschofenig <span dir=3D"ltr">&lt;<a href=3D"=
mailto:Hannes.Tschofenig@arm.com" target=3D"_blank">Hannes.Tschofenig@arm.c=
om</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"marg=
in:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">





<div lang=3D"EN-GB" link=3D"blue" vlink=3D"purple">
<div class=3D"m_8778436994765719477WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">Hi Suhas,
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">The details of how to fin=
d the server for downloading a firmware image depend on the deployment and =
the protocols being used.
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">For example, we use LwM2M=
 for the transport and for discovery.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">The charter is specifical=
ly written to give flexibility. For example, someone deploying BLE devices =
that are connected using a smart phone app can use their
 infrastructure to push firmware images to devices. <u></u><u></u></span></=
p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">Keeping the work focused =
will also help to ensure that we get somewhere.
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">Ciao<u></u><u></u></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">Hannes<u></u><u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><a name=3D"m_8778436994765719477__MailEndCompose"><s=
pan style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-se=
rif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></span></a></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;"> Suit [mailto:<a href=3D"mailto:suit-bounces@ietf.org"=
 target=3D"_blank">suit-bounces@ietf.org</a>]
<b>On Behalf Of </b>Suhas Nandakumar<br>
<b>Sent:</b> 24 October 2017 02:37<br>
<b>To:</b> <a href=3D"mailto:suit@ietf.org" target=3D"_blank">suit@ietf.org=
</a><br>
<b>Subject:</b> [Suit] Firmware Server Discovery<u></u><u></u></span></p><d=
iv><div class=3D"h5">
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;">Hello All,</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;">Finding out where to download firmware an=
d that there is firmware available is a key part of download the firmware a=
nd impacts the design of the manifest.=C2=A0</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;">We think selecting a simple approach to t=
his needs to be included in scope of the charter</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;">Thanks</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;">Suhas</span><u></u><u></u></p>
</div>
</div>
</div></div></div>
IMPORTANT NOTICE: The contents of this email and any attachments are confid=
ential and may also be privileged. If you are not the intended recipient, p=
lease notify the sender immediately and do not disclose the contents to any=
 other person, use it for any purpose,
 or store or copy the information in any medium. Thank you.
</div>

</blockquote></div><br></div>

--001a1145761a54528c055c519523--


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From: Martin Thomson <martin.thomson@gmail.com>
Date: Wed, 25 Oct 2017 10:15:37 +1100
Message-ID: <CABkgnnVMMkX1fAaPvtHVWpJ4n+sx7R9wKxv3xwWLiipsr9X6gg@mail.gmail.com>
To: Cullen Jennings <fluffy@iii.ca>
Cc: Hannes Tschofenig <Hannes.Tschofenig@arm.com>, "suit@ietf.org" <suit@ietf.org>, Suhas Nandakumar <suhasietf@gmail.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/rK1PGLwzeqcQZfbHqqOAQ8VPxlI>
Subject: Re: [Suit] Suit - Charter Considerations and Thoughts
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On Tue, Oct 24, 2017 at 11:35 PM, Cullen Jennings <fluffy@iii.ca> wrote:
>> On Oct 24, 2017, at 6:00 AM, Hannes Tschofenig <Hannes.Tschofenig@arm.com> wrote:
>>
>> Regarding the charter comments I believe you misunderstand this effort a bit. The proposed work is actually not about the download of the firmware but instead focuses about the meta-data and security wrapper around the firmware/software.
>
> The whole point of having a BOF is to try and figure out what the scope of the work should be.

If there are people interested in the problem of firmware acquisition
as opposed to the narrower scope of the proposed effort which
concentrates on how to determine if a blob of bits should be applied
once acquired, that might be worth a second working group.  On the
other hand, if what Suhas suggests is correct and the description of
the blob necessarily depends on the means by which it is acquired,
then we should discuss that.  Hannes seems to believe that this isn't
a necessary dependency, and I would have to say that I can't see any
evidence to support the claim that the two are co-dependent.

We could also decide that the scope of the proposed work should be
expanded to include other things without having that discussion.
Personally, I like the fact that this is a narrowly focused effort.  I
can see plenty of opportunity for disagreement, but also a fairly
rapid (and successful) conclusion.


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From: Suhas Nandakumar <suhasietf@gmail.com>
Date: Tue, 24 Oct 2017 16:36:41 -0700
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Subject: [Suit] Charter Text Confusion
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An interesting thing came up on meeting with Hannes today.
We think one of the reasons for some confusions has been discrepancy
between the charter on the datatracker and the one Hannes shared to the
list.

Just to point one of the issues, the charter at the datatracker says


This group will use draft-moran-fud-architecture as a starting point for
discussion of the "Architecture" document.

This group will use draft-moran-fud-manifest as a starting point for
discussion of the "Manifest Format" specification.

While the charter sent by Hannes to the mailing list @
https://www.ietf.org/mail-archive/web/fud/current/msg00078.html, doesn't
say the above.

There are other minor differences between these 2 versions.

Shouldn't we be using one posted by Hannes as the reference ? or should we
be referring the datatracker version ?


Cheers

Suhas

--001a114b8bba4a98e5055c536921
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<div dir=3D"ltr"><br><div><br></div><div>An interesting thing came up on me=
eting with Hannes today.=C2=A0</div><div>We think one of the reasons for so=
me confusions has been discrepancy between the charter on the datatracker a=
nd the one Hannes shared to the list.</div><div><br></div><div>Just to poin=
t one of the issues, the charter at the datatracker says<br><p style=3D"box=
-sizing:border-box;margin:0px 0px 10.5px;font-family:&quot;PT Serif&quot;,P=
alatino,&quot;Neue Swift&quot;,serif;font-size:15px"><br></p><p style=3D"bo=
x-sizing:border-box;margin:0px 0px 10.5px;font-family:&quot;PT Serif&quot;,=
Palatino,&quot;Neue Swift&quot;,serif;font-size:15px">This group will use d=
raft-moran-fud-architecture as a starting point for<br style=3D"box-sizing:=
border-box">discussion of the &quot;Architecture&quot; document.</p><p styl=
e=3D"box-sizing:border-box;margin:0px 0px 10.5px;font-family:&quot;PT Serif=
&quot;,Palatino,&quot;Neue Swift&quot;,serif;font-size:15px">This group wil=
l use draft-moran-fud-manifest as a starting point for<br style=3D"box-sizi=
ng:border-box">discussion of the &quot;Manifest Format&quot; specification.=
</p><p style=3D"box-sizing:border-box;margin:0px 0px 10.5px;font-family:&qu=
ot;PT Serif&quot;,Palatino,&quot;Neue Swift&quot;,serif;font-size:15px"><sp=
an style=3D"font-family:arial,sans-serif;font-size:small">While the charter=
 sent by Hannes to the mailing list @=C2=A0<a href=3D"https://www.ietf.org/=
mail-archive/web/fud/current/msg00078.html">https://www.ietf.org/mail-archi=
ve/web/fud/current/msg00078.html</a>, doesn&#39;t say the above.</span><br>=
</p><p style=3D"box-sizing:border-box;margin:0px 0px 10.5px">There are othe=
r minor differences between these 2 versions.</p><p style=3D"box-sizing:bor=
der-box;margin:0px 0px 10.5px">Shouldn&#39;t we be using one posted by Hann=
es as the reference ? or should we be referring the datatracker version ?</=
p><p style=3D"box-sizing:border-box;margin:0px 0px 10.5px"><br></p><p style=
=3D"box-sizing:border-box;margin:0px 0px 10.5px">Cheers</p><p style=3D"box-=
sizing:border-box;margin:0px 0px 10.5px">Suhas</p></div></div>

--001a114b8bba4a98e5055c536921--


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From: "Cullen Jennings (fluffy)" <fluffy@cisco.com>
To: "suit@ietf.org" <suit@ietf.org>
CC: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
Thread-Topic: [Suit] Charter & Regulation
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From nobody Wed Oct 25 17:43:14 2017
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Subject: [Suit] Alissa Cooper's No Objection on charter-ietf-suit-00-01: (with COMMENT)
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Alissa Cooper has entered the following ballot position for
charter-ietf-suit-00-01: No Objection

When responding, please keep the subject line intact and reply to all
email addresses included in the To and CC lines. (Feel free to cut this
introductory paragraph, however.)



The document, along with other ballot positions, can be found here:
https://datatracker.ietf.org/doc/charter-ietf-suit/



----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

I'm balloting No Objection but I think it would be useful to spend some more
time refining the charter before sending it out for external review.

In addition to the question raised by Erik that has already been discussed, I
wonder about constraining this to ASN.1. I've seen arguments on the list for
why ASN.1 makes sense, but not why the WG should be prevented from working on
other formats.

I also wonder about this text being overly limiting, given that the milestones
additionally include specifying an architecture: "The purpose of this group is
to produce a second version of RFC 4108 that reflects the current best
practices."



From nobody Wed Oct 25 18:33:09 2017
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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Date: Wed, 25 Oct 2017 21:32:25 -0400
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Subject: Re: [Suit] Alissa Cooper's No Objection on charter-ietf-suit-00-01: (with COMMENT)
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Thanks for your comments, Alissa.  Inline.

On Wed, Oct 25, 2017 at 8:43 PM, Alissa Cooper <alissa@cooperw.in> wrote:
> Alissa Cooper has entered the following ballot position for
> charter-ietf-suit-00-01: No Objection
>
> When responding, please keep the subject line intact and reply to all
> email addresses included in the To and CC lines. (Feel free to cut this
> introductory paragraph, however.)
>
>
>
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/charter-ietf-suit/
>
>
>
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>
> I'm balloting No Objection but I think it would be useful to spend some more
> time refining the charter before sending it out for external review.
>
> In addition to the question raised by Erik that has already been discussed, I
> wonder about constraining this to ASN.1. I've seen arguments on the list for
> why ASN.1 makes sense, but not why the WG should be prevented from working on
> other formats.
Right, I'd like to hear more as well to ensure we start out with an
agreed way forward (or at least a starting point).  If other formats
are needed, the WG might decide to prioritize them.

>
> I also wonder about this text being overly limiting, given that the milestones
> additionally include specifying an architecture: "The purpose of this group is
> to produce a second version of RFC 4108 that reflects the current best
> practices."
>
Yes, this came up on list as well.  This sentence has been removed in
the version I just posted.  It still leaves in a bullet that lists
4108 as a work item, but not as "the purpose".  I'm not sure of the
4108 bullet will be removed or not and just added as a milestone.

Thanks.
>



-- 

Best regards,
Kathleen


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From: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>
Date: Thu, 26 Oct 2017 22:01:13 -0500
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--94eb2c06573c73a7bb055c7e80e5
Content-Type: text/plain; charset="UTF-8"
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Hi, Cullen,

On Tue, Oct 24, 2017 at 12:14 AM, Cullen Jennings (fluffy) <fluffy@cisco.co=
m
> wrote:

> Delivery of firmware over a multicast transport mechanism is very hard an=
d
> involves significant congestion issue. I don=E2=80=99t think the IETF cur=
rently has
> a transport protocol that's really suitable for this. I would prefer to s=
ee
> the WG charted for this  to be clearly out of scope for the first
> deliverable.


The odds are at least 2:1 that I agree with you, but just to make sure
we're agreeing on the same thing, are you thinking that

   - firmware delivery over multicast transport would be out of scope for
   the first deliverable, or
   - firmware delivery over multicast transport with a purpose-specific
   congestion control would be out of scope for the first deliverable, or
   - development of a general-purpose multicast transport protocol
   appropriate for firmware delivery would be out of scope

?

Curiously yours,

Spencer, as an individual (who already balloted Yes on the SUIT charter)

--94eb2c06573c73a7bb055c7e80e5
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi, Cullen,<div class=3D"gmail_extra"><br><div class=3D"gm=
ail_quote">On Tue, Oct 24, 2017 at 12:14 AM, Cullen Jennings (fluffy) <span=
 dir=3D"ltr">&lt;<a href=3D"mailto:fluffy@cisco.com" target=3D"_blank">fluf=
fy@cisco.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Delive=
ry of firmware over a multicast transport mechanism is very hard and involv=
es significant congestion issue. I don=E2=80=99t think the IETF currently h=
as a transport protocol that&#39;s really suitable for this. I would prefer=
 to see the WG charted for this=C2=A0 to be clearly out of scope for the fi=
rst deliverable.</blockquote><div><br></div><div>The odds are at least 2:1 =
that I agree with you, but just to make sure we&#39;re agreeing on the same=
 thing, are you thinking that</div><div><ul><li>firmware delivery over mult=
icast transport would be out of scope for the first deliverable, or</li><li=
>firmware delivery over multicast transport with a purpose-specific congest=
ion control would be out of scope for the first deliverable, or</li><li>dev=
elopment of a general-purpose multicast transport protocol appropriate for =
firmware delivery would be out of scope</li></ul>?=C2=A0<br></div><div><br>=
</div><div>Curiously yours,</div><div><br></div><div>Spencer, as an individ=
ual (who already balloted Yes on the SUIT charter)</div></div></div></div>

--94eb2c06573c73a7bb055c7e80e5--


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From: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>
Date: Thu, 26 Oct 2017 22:50:10 -0500
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Suhas,

On Tue, Oct 24, 2017 at 6:36 PM, Suhas Nandakumar <suhasietf@gmail.com>
wrote:

>
>
> An interesting thing came up on meeting with Hannes today.
> We think one of the reasons for some confusions has been discrepancy
> between the charter on the datatracker and the one Hannes shared to the
> list.
>
> Just to point one of the issues, the charter at the datatracker says
>
>
> This group will use draft-moran-fud-architecture as a starting point for
> discussion of the "Architecture" document.
>
> This group will use draft-moran-fud-manifest as a starting point for
> discussion of the "Manifest Format" specification.
>
> While the charter sent by Hannes to the mailing list @
> https://www.ietf.org/mail-archive/web/fud/current/msg00078.html, doesn't
> say the above.
>
> There are other minor differences between these 2 versions.
>
> Shouldn't we be using one posted by Hannes as the reference ? or should we
> be referring the datatracker version ?
>

Kathleen would have the definitive answer here, but the IESG is already
balloting on the datatracker version ...

Spencer

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<div dir=3D"ltr">Suhas,<div class=3D"gmail_extra"><br><div class=3D"gmail_q=
uote">On Tue, Oct 24, 2017 at 6:36 PM, Suhas Nandakumar <span dir=3D"ltr">&=
lt;<a href=3D"mailto:suhasietf@gmail.com" target=3D"_blank">suhasietf@gmail=
.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"lt=
r"><br><div><br></div><div>An interesting thing came up on meeting with Han=
nes today.=C2=A0</div><div>We think one of the reasons for some confusions =
has been discrepancy between the charter on the datatracker and the one Han=
nes shared to the list.</div><div><br></div><div>Just to point one of the i=
ssues, the charter at the datatracker says<br><p style=3D"box-sizing:border=
-box;margin:0px 0px 10.5px;font-family:&quot;PT Serif&quot;,Palatino,&quot;=
Neue Swift&quot;,serif;font-size:15px"><br></p><p style=3D"box-sizing:borde=
r-box;margin:0px 0px 10.5px;font-family:&quot;PT Serif&quot;,Palatino,&quot=
;Neue Swift&quot;,serif;font-size:15px">This group will use draft-moran-fud=
-architecture as a starting point for<br style=3D"box-sizing:border-box">di=
scussion of the &quot;Architecture&quot; document.</p><p style=3D"box-sizin=
g:border-box;margin:0px 0px 10.5px;font-family:&quot;PT Serif&quot;,Palatin=
o,&quot;Neue Swift&quot;,serif;font-size:15px">This group will use draft-mo=
ran-fud-manifest as a starting point for<br style=3D"box-sizing:border-box"=
>discussion of the &quot;Manifest Format&quot; specification.</p><p style=
=3D"box-sizing:border-box;margin:0px 0px 10.5px;font-family:&quot;PT Serif&=
quot;,Palatino,&quot;Neue Swift&quot;,serif;font-size:15px"><span style=3D"=
font-family:arial,sans-serif;font-size:small">While the charter sent by Han=
nes to the mailing list @=C2=A0<a href=3D"https://www.ietf.org/mail-archive=
/web/fud/current/msg00078.html" target=3D"_blank">https://www.ietf.org/mail=
-<wbr>archive/web/fud/current/<wbr>msg00078.html</a>, doesn&#39;t say the a=
bove.</span><br></p><p style=3D"box-sizing:border-box;margin:0px 0px 10.5px=
">There are other minor differences between these 2 versions.</p><p style=
=3D"box-sizing:border-box;margin:0px 0px 10.5px">Shouldn&#39;t we be using =
one posted by Hannes as the reference ? or should we be referring the datat=
racker version ?</p></div></div></blockquote><div><br></div><div>Kathleen w=
ould have the definitive answer here, but the IESG is already balloting on =
the datatracker version ...</div><div><br></div><div>Spencer=C2=A0</div></d=
iv></div></div>

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From: Cullen Jennings <fluffy@iii.ca>
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If we had some other group in the IETF that had put together a multicast =
transport protocol that worked well for things like this, I think there =
would be interest in using it for delivering firmware updates.

But doing a transport like that is not easy and should not be done in =
this WG - I think of it as a fairly different skill set than the people =
I would hope would come this WG. If such a thing got developed, I can =
imagine figuring out how to use that transport for this firmware update =
could be added at a later stage to this WG but I would still want to get =
a non multicast version done first as that is what is most needed.=20

I am aware of the FLUTE work - that seemed hard to use for firmware =
updates so I had not pursued that for Cisco devices. If there are people =
doing firmware updates with FLUTE, I would *love* to hear about their =
experiences at the BOF. It could easily change my mind.=20


> On Oct 26, 2017, at 9:01 PM, Spencer Dawkins at IETF =
<spencerdawkins.ietf@gmail.com> wrote:
>=20
> Hi, Cullen,
>=20
> On Tue, Oct 24, 2017 at 12:14 AM, Cullen Jennings (fluffy) =
<fluffy@cisco.com> wrote:
> Delivery of firmware over a multicast transport mechanism is very hard =
and involves significant congestion issue. I don=E2=80=99t think the =
IETF currently has a transport protocol that's really suitable for this. =
I would prefer to see the WG charted for this  to be clearly out of =
scope for the first deliverable.
>=20
> The odds are at least 2:1 that I agree with you, but just to make sure =
we're agreeing on the same thing, are you thinking that
> 	=E2=80=A2 firmware delivery over multicast transport would be =
out of scope for the first deliverable, or

Probably out of scope for v1 unless a suitable multicast transport =
protocol already exists.

> 	=E2=80=A2 firmware delivery over multicast transport with a =
purpose-specific congestion control would be out of scope for the first =
deliverable, or

If this WG would be doing the congestion control, then yes, out of scope =
for v1=20

> 	=E2=80=A2 development of a general-purpose multicast transport =
protocol appropriate for firmware delivery would be out of scope

Definitely out of scope for this WG to last done.=20

> ?=20
>=20
> Curiously yours,
>=20
> Spencer, as an individual (who already balloted Yes on the SUIT =
charter)
> _______________________________________________
> Suit mailing list
> Suit@ietf.org
> https://www.ietf.org/mailman/listinfo/suit


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From: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>
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Hi, Cullen,

On Thu, Oct 26, 2017 at 11:25 PM, Cullen Jennings <fluffy@iii.ca> wrote:

>
> If we had some other group in the IETF that had put together a multicast
> transport protocol that worked well for things like this, I think there
> would be interest in using it for delivering firmware updates.
>
> But doing a transport like that is not easy and should not be done in thi=
s
> WG - I think of it as a fairly different skill set than the people I woul=
d
> hope would come this WG. If such a thing got developed, I can imagine
> figuring out how to use that transport for this firmware update could be
> added at a later stage to this WG but I would still want to get a non
> multicast version done first as that is what is most needed.
>
> I am aware of the FLUTE work - that seemed hard to use for firmware
> updates so I had not pursued that for Cisco devices. If there are people
> doing firmware updates with FLUTE, I would *love* to hear about their
> experiences at the BOF. It could easily change my mind.
>
>
> > On Oct 26, 2017, at 9:01 PM, Spencer Dawkins at IETF <
> spencerdawkins.ietf@gmail.com> wrote:
> >
> > Hi, Cullen,
> >
> > On Tue, Oct 24, 2017 at 12:14 AM, Cullen Jennings (fluffy) <
> fluffy@cisco.com> wrote:
> > Delivery of firmware over a multicast transport mechanism is very hard
> and involves significant congestion issue. I don=E2=80=99t think the IETF=
 currently
> has a transport protocol that's really suitable for this. I would prefer =
to
> see the WG charted for this  to be clearly out of scope for the first
> deliverable.
> >
> > The odds are at least 2:1 that I agree with you, but just to make sure
> we're agreeing on the same thing, are you thinking that
> >       =E2=80=A2 firmware delivery over multicast transport would be out=
 of scope
> for the first deliverable, or
>
> Probably out of scope for v1 unless a suitable multicast transport
> protocol already exists.
>
> >       =E2=80=A2 firmware delivery over multicast transport with a
> purpose-specific congestion control would be out of scope for the first
> deliverable, or
>
> If this WG would be doing the congestion control, then yes, out of scope
> for v1
>
> >       =E2=80=A2 development of a general-purpose multicast transport pr=
otocol
> appropriate for firmware delivery would be out of scope
>
> Definitely out of scope for this WG to last done.


Excellent, we agree. And I'm interested in requirements for multicast
transport protocols as they are identified.

Spencer

--001a114c7b40d0468e055c805531
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi, Cullen,<div class=3D"gmail_extra"><br><div class=3D"gm=
ail_quote">On Thu, Oct 26, 2017 at 11:25 PM, Cullen Jennings <span dir=3D"l=
tr">&lt;<a href=3D"mailto:fluffy@iii.ca" target=3D"_blank">fluffy@iii.ca</a=
>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 =
0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
If we had some other group in the IETF that had put together a multicast tr=
ansport protocol that worked well for things like this, I think there would=
 be interest in using it for delivering firmware updates.<br>
<br>
But doing a transport like that is not easy and should not be done in this =
WG - I think of it as a fairly different skill set than the people I would =
hope would come this WG. If such a thing got developed, I can imagine figur=
ing out how to use that transport for this firmware update could be added a=
t a later stage to this WG but I would still want to get a non multicast ve=
rsion done first as that is what is most needed.<br>
<br>
I am aware of the FLUTE work - that seemed hard to use for firmware updates=
 so I had not pursued that for Cisco devices. If there are people doing fir=
mware updates with FLUTE, I would *love* to hear about their experiences at=
 the BOF. It could easily change my mind.<br>
<span class=3D""><br>
<br>
&gt; On Oct 26, 2017, at 9:01 PM, Spencer Dawkins at IETF &lt;<a href=3D"ma=
ilto:spencerdawkins.ietf@gmail.com">spencerdawkins.ietf@gmail.com</a><wbr>&=
gt; wrote:<br>
&gt;<br>
&gt; Hi, Cullen,<br>
&gt;<br>
&gt; On Tue, Oct 24, 2017 at 12:14 AM, Cullen Jennings (fluffy) &lt;<a href=
=3D"mailto:fluffy@cisco.com">fluffy@cisco.com</a>&gt; wrote:<br>
&gt; Delivery of firmware over a multicast transport mechanism is very hard=
 and involves significant congestion issue. I don=E2=80=99t think the IETF =
currently has a transport protocol that&#39;s really suitable for this. I w=
ould prefer to see the WG charted for this=C2=A0 to be clearly out of scope=
 for the first deliverable.<br>
&gt;<br>
&gt; The odds are at least 2:1 that I agree with you, but just to make sure=
 we&#39;re agreeing on the same thing, are you thinking that<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0=E2=80=A2 firmware delivery over multicast t=
ransport would be out of scope for the first deliverable, or<br>
<br>
</span>Probably out of scope for v1 unless a suitable multicast transport p=
rotocol already exists.<br>
<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0=E2=80=A2 firmware delivery over multicast t=
ransport with a purpose-specific congestion control would be out of scope f=
or the first deliverable, or<br>
<br>
If this WG would be doing the congestion control, then yes, out of scope fo=
r v1<br>
<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0=E2=80=A2 development of a general-purpose m=
ulticast transport protocol appropriate for firmware delivery would be out =
of scope<br>
<br>
Definitely out of scope for this WG to last done.</blockquote><div><br></di=
v><div>Excellent, we agree. And I&#39;m interested in requirements for mult=
icast transport protocols as they are identified.</div><div><br></div><div>=
Spencer=C2=A0</div></div></div></div>

--001a114c7b40d0468e055c805531--


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On Oct 27, 2017, at 06:25, Cullen Jennings <fluffy@iii.ca> wrote:
>=20
> If we had some other group in the IETF that had put together a =
multicast transport protocol that worked well for things like this, I =
think there would be interest in using it for delivering firmware =
updates.

MPL (RFC7731) actually is close enough to being a multicast transport =
protocol that it might be useful with some additional profiling.
(For a definition of =E2=80=9Cmulticast=E2=80=9D.)

Gr=C3=BC=C3=9Fe, Carsten


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--=-=-=
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Cullen Jennings <fluffy@iii.ca> wrote:
    > But doing a transport like that is not easy and should not be done in
    > this WG - I think of it as a fairly different skill set than the people
    > I would hope would come this WG. If such a thing got developed, I can
    > imagine figuring out how to use that transport for this firmware update
    > could be added at a later stage to this WG but I would still want to
    > get a non multicast version done first as that is what is most needed.

I agree strongly: multicast is out of scope of this charter and should be.

Let's get the formats right and worry less about the transport for now.

the charter says:
    * A mechanism to transport firmware images to IoT devices.

but the work items do not include any transport work.

My take on this is that in order to get images to class 1 devices that we may
have to chop up the image into digestable bits, and this will require a
standard way to describe which chunk to transfer next.  That might not
involve any new technology; it could be done with rfc7233 HTTP/1.1 Range
Requests, or could be consist of a JSON manifest that included a bunch of
URLs for the chunks, or... there are many pre-existing things.

<BLUESKYING>
Also, if the devices are arranged in an LLN mesh (via RPL/MPL), then
multicast takes on a slightly different flavour than we are used to with
ethernet.   Depending upon the capabilities of the devices, it might be
possible for each layer in the mesh to feed the next layer; a kind of
application-layer multicast.

Yet, from an *operational* point of view, sometimes it's better to upgrade
devices from the leafs inward than from the inside outside, since it's less
disruptive if it turns out that there is a problem with the upgrade.
</BLUESKYING>

    > I am aware of the FLUTE work - that seemed hard to use for firmware
    > updates so I had not pursued that for Cisco devices. If there are
    > people doing firmware updates with FLUTE, I would *love* to hear about
    > their experiences at the BOF. It could easily change my mind.

:-)
Are you thinking about Cisco phone devices which might all be on a flat-ish VLAN?

--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-




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Subject: Re: [Suit] [Fud] A few questions / observations
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From: Brendan Moran <Brendan.Moran@arm.com>
To: Martin Thomson <martin.thomson@gmail.com>
CC: Cullen Jennings <fluffy@iii.ca>, Suhas Nandakumar <suhasietf@gmail.com>, Hannes Tschofenig <Hannes.Tschofenig@arm.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Suit - Charter Considerations and Thoughts
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/jr0Ct6Rmc8Ea0nf0UdEPaGeWaus>
Subject: Re: [Suit] Suit - Charter Considerations and Thoughts
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Subject: [Suit] Manifest format encodings
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From: "Waltermire, David A. (Fed)" <david.waltermire@nist.gov>
To: Brendan Moran <Brendan.Moran@arm.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: Manifest format encodings
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Date: Mon, 30 Oct 2017 15:30:06 +0000
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Subject: Re: [Suit] Manifest format encodings
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From: Suhas Nandakumar <suhasietf@gmail.com>
Date: Mon, 30 Oct 2017 16:40:51 -0700
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Subject: [Suit] SUIT BOF Agenda Time Request -
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Hello Chairs, Group

As a followup on our original mail on the agenda time request, We have
submitted following two drafts  (requirements and soln architecture)  to
help discuss on the scope and direction of the SUIT work at the BOF.

Could we please request agenda time for these drafts

Requirements:

https://datatracker.ietf.org/doc/draft-nandakumar-suit-secfu-requirements/?include_text=1

High level Solution Architecture:

https://datatracker.ietf.org/doc/draft-nandakumar-suit-secfu-solution-arch/?include_text=1


Thanks
Suhas

--089e0826e4fc410762055ccc2be2
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<div dir=3D"ltr"><div><br></div><span id=3D"gmail-m_-540075440950039076gmai=
l-docs-internal-guid-d6c339c8-4c41-6d6f-d537-2591e690c502" style=3D"backgro=
und-color:transparent;font-size:11pt;font-family:Arial;vertical-align:basel=
ine">Hello Chairs, Group</span><div><br></div><div><span style=3D"backgroun=
d-color:transparent;font-size:11pt;font-family:Arial;vertical-align:baselin=
e">As a followup on our original mail on the agenda time request, We have s=
ubmitted following two drafts=C2=A0 (requirements and soln architecture)=C2=
=A0 to help discuss on the scope and direction of the SUIT work at the BOF.=
=C2=A0</span></div><div><span style=3D"background-color:transparent;font-si=
ze:11pt;font-family:Arial;vertical-align:baseline"><br></span></div><div><s=
pan style=3D"background-color:transparent;font-size:11pt;font-family:Arial;=
vertical-align:baseline">Could we please request agenda time for these draf=
ts</span></div><div><br></div><div><font face=3D"Arial"><span style=3D"font=
-size:14.6667px">Requirements:</span></font></div><div>=C2=A0 =C2=A0<a href=
=3D"https://datatracker.ietf.org/doc/draft-nandakumar-suit-secfu-requiremen=
ts/?include_text=3D1" alt=3D"https://datatracker.ietf.org/doc/draft-nandaku=
mar-suit-secfu-requirements/?include_text=3D1" style=3D"color:rgb(10,183,21=
5);outline:none;text-decoration-line:none;font-family:-apple-system,&quot;S=
egoe UI Semilight&quot;,sans-serif;font-size:14px">https://datatracker.ietf=
.org/doc/draft-nandakumar-suit-secfu-requirements/?include_text=3D1</a><br>=
</div><div><div><br></div><div><div><font face=3D"Arial"><span style=3D"fon=
t-size:14.6667px">High level Solution Architecture:</span></font></div></di=
v><div>=C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org/doc/draft-nanda=
kumar-suit-secfu-solution-arch/?include_text=3D1">https://datatracker.ietf.=
org/doc/draft-nandakumar-suit-secfu-solution-arch/?include_text=3D1</a></di=
v></div><div><br></div><div><font face=3D"Arial"><span style=3D"font-size:1=
4.6667px"><br></span></font></div><div><font face=3D"Arial"><span style=3D"=
font-size:14.6667px">Thanks</span></font></div><div><font face=3D"Arial"><s=
pan style=3D"font-size:14.6667px">Suhas</span></font></div><div><font face=
=3D"Arial"><span style=3D"font-size:14.6667px"><br></span></font></div><div=
><br></div></div>

--089e0826e4fc410762055ccc2be2--


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--=-=-=
Content-Type: text/plain


Waltermire, David A. (Fed) <david.waltermire@nist.gov> wrote:
    > I believe the serialization requirement is that there must be parity
    > between the producer of the manifest and the capabilities of the
    > device. I don't believe that there is an absolute requirement for a
    > single canonical serialization format for manifests. This allows
    > different sets of products to choose the serialization approach that
    > makes the most sense for those products. IMHO, choosing a single
    > serialization is too limiting and does not provide for change over time
    > in this space as needs/capabilities shift.

Let me ask and answer some stupid questions in order to agree with you.

Q: Why do we need any kind of standard for the blob?
We don't really need a standard.
We happen to have rfc4108, with it's FirmwarePkgData and other containers.

Manufacturers know what the format of their firmware is, and can can produce
matching blobs. There is no negotiation here at all.

Q: So why do we need a manifest for?
A: The manifest tells the device what's in the blob.
    Integrity codes, version numbers, etc.
    Again the manufacturer knows exactly what kind of serialization the
    device supports for the manifest.  The device need only support one
    format, and the manufacturer has to produce that format.

Q: so why are we here?

A: Because it's useful to have (common) tools and systems that can intermediate the
   upgrade process, and those devices need to look at the manifest.

The device is not the only entity that needs to be able to see into the
manifest.  But, these other systems that need to look at manifests are not
constrained, they are not bootloaders or PXE clients, etc.

This means that we should have an abstraction of what's in the manifest.

(YANG is pretty good at this, in part because it does not come with a default
way to serialize things).

Then we should have a set of serializations of the manifests: XML, CBOR/CWT,
YAML, JSON/JOSE... and even DER/ASN1.

This is what we did in ANIMA with draft-ietf-anima-voucher.


--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-




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Hello Michael,

I hope you do not mind that I provide some friendly comments :)

On 10/31/2017 01:51 AM, Michael Richardson wrote:

> Manufacturers know what the format of their firmware is, and can can produce
> matching blobs. There is no negotiation here at all.

Some people might see that as a benefit.

>      The device need only support one
>      format, and the manufacturer has to produce that format.

Same as above. And a niche example not intended to sway opinion: vetting 
of integrity and certification will always be a thing and a huge cost sink.


> A: Because it's useful to have (common) tools and systems that can intermediate the
>     upgrade process, and those devices need to look at the manifest.

Sounds sound.

> 
> The device is not the only entity that needs to be able to see into the
> manifest.  But, these other systems that need to look at manifests are not
> constrained, they are not bootloaders or PXE clients, etc.
> 
> This means that we should have an abstraction of what's in the manifest.
> 
> (YANG is pretty good at this, in part because it does not come with a default
> way to serialize things).

Well YANG comes with three serializations from which most people seem to 
think XML is the... default, I think?

> 
> Then we should have a set of serializations of the manifests: XML, CBOR/CWT,
> YAML, JSON/JOSE... and even DER/ASN1.

I just saw XML YAML and DER in that least. From my point, of view that 
does not let me feel very comfortable in respect to manifests.

> 
> This is what we did in ANIMA with draft-ietf-anima-voucher.

And not everyone in ANIMA is happy with this, I think?

> 
> 
> --
> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
>   -= IPv6 IoT consulting =-


That said, I do not intend to discourage diversity, but using YANG as an 
abstraction for ASN.1? :o)

Viele Grüße,

Henk

> 
> 
> 
> 
> 
> _______________________________________________
> Suit mailing list
> Suit@ietf.org
> https://www.ietf.org/mailman/listinfo/suit
> 


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From: Brendan Moran <Brendan.Moran@arm.com>
To: David Brown <david.brown@linaro.org>
CC: "suit@ietf.org" <suit@ietf.org>, Emmanuel Baccelli <Emmanuel.Baccelli@inria.fr>, Hannes Tschofenig <Hannes.Tschofenig@arm.com>, "housley@vigilsec.com" <housley@vigilsec.com>, "david.waltermire@nist.gov" <david.waltermire@nist.gov>, "dev-mcuboot@lists.runtime.co" <dev-mcuboot@lists.runtime.co>
Thread-Topic: [SUIT] [dev-mcuboot] IoT firmware update standardization efforts @ IETF
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Subject: Re: [Suit] Manifest format encodings
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Content-Type: text/plain


Henk Birkholz <henk.birkholz@sit.fraunhofer.de> wrote:
    >> The device is not the only entity that needs to be able to see into the
    >> manifest.  But, these other systems that need to look at manifests are not
    >> constrained, they are not bootloaders or PXE clients, etc.
    >>
    >> This means that we should have an abstraction of what's in the manifest.
    >>
    >> (YANG is pretty good at this, in part because it does not come with a default
    >> way to serialize things).

    > Well YANG comes with three serializations from which most people seem to
    > think XML is the... default, I think?

No, that's really not the case.  There really isn't a default, but people had
to start someplace.

YANG serializes to XML easily, but most people want to go to JSON, and there
are now ways to go to CBOR directly.

    >> Then we should have a set of serializations of the manifests: XML, CBOR/CWT,
    >> YAML, JSON/JOSE... and even DER/ASN1.

    > I just saw XML YAML and DER in that least. From my point, of view that does
    > not let me feel very comfortable in respect to manifests.

So, don't use XML or DER.  Both make me ill.

Someone who has a device which already does extensive xml parsing might want
it. (Not me!)


    >> This is what we did in ANIMA with draft-ietf-anima-voucher.

    > And not everyone in ANIMA is happy with this, I think?

The feedback has mostly been about people thought that because we gave an
example in draft-ietf-anima-voucher that involved PKCS/CMS signed JSON, that
this was the only format allowed.  That was never the intention, and we fixed
that.

    >> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
    >> -= IPv6 IoT consulting =-


    > That said, I do not intend to discourage diversity, but using YANG as an
    > abstraction for ASN.1? :o)

ASN.1 is akin to CBOR's CDDL in the kinds of structures that it can describe.
DER is akin to CBOR.
(Except that ASN.1 is so general and OIDs so silly as to piss everyone off)

Ultimately YANG needs arrays and dictionaries (and nesting of them).
So you don't really describe the ASN.1 with YANG, rather, you probably use
ASN.1 to describe a nestable container in which you can translate YANG
attributes.  Again... it's not something I want to do, but for those that
enjoy it, they can do so.

--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-




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