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From: Brendan Moran <Brendan.Moran@arm.com>
To: Cullen Jennings <fluffy@iii.ca>
CC: Hannes Tschofenig <Hannes.Tschofenig@arm.com>, "suit@ietf.org" <suit@ietf.org>, Carsten Bormann <cabo@tzi.org>, Suhas Nandakumar <suhasietf@gmail.com>
Thread-Topic: [Suit] Manifest Formats
Thread-Index: AQHTY+tcK9FZfhzBhUOjflWcnaZPPqMhmszBgACDgh+ACLmYPoAI2FSA
Date: Mon, 4 Dec 2017 20:11:15 +0000
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Subject: Re: [Suit] Manifest Formats
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> On 29 Nov 2017, at 04:58, Cullen Jennings <fluffy@iii.ca> wrote:
>
>
>> On Nov 23, 2017, at 9:13 AM, Hannes Tschofenig <Hannes.Tschofenig@arm.co=
m> wrote:
>>
>> Hi Suhas,
>>
>>
>>
>> The way we would like this to work is not to have the update server crea=
te these manifests in real-time, based on what the device asks for. Instead=
, the manifests are created and signed by the developer (using a tool or a =
web service). The update server is mainly a repository. This approach provi=
des better security.
>>
>>
>
> How would that work? Would the update server, an online computer on the i=
nternet, need have the private key to sign the manifests? I can assure you =
that many IoT vendors do not handle their software signing keys that way.
>
> I imagine this working that a given vendor would likely only use one form=
at but an update server could serve up manifests in any format. Sure one fo=
rmat would be nice but no matter which one you choose, a bunch of vendors w=
ill not like it and will do something else. The important part is the decid=
ing the semantic level information and design choices. The syntax is really=
 not the hard part of any of this yet different vendors have strong opinion=
s about this often with very good reasons.

The expectation in draft-moran-suit-manifest00 is that end-to-end security =
is used, and all online repositories are inherently distrusted.

The argument is that the author of an update will know which serialisation =
is expected by the recipient device. I think that it is more complex than t=
his, however, so I believe that it is best to support a single canonical re=
presentation.

Best Regards,
Brendan
IMPORTANT NOTICE: The contents of this email and any attachments are confid=
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From: "Waltermire, David A. (Fed)" <david.waltermire@nist.gov>
To: "suit@ietf.org" <suit@ietf.org>
Thread-Topic: Updated Charter Text and Way Forward
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Subject: [Suit] Updated Charter Text and Way Forward
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Kathleen, Dave, and I met earlier today to discuss the charter and the way =
forward. This email includes updated charter text and milestones, and a bri=
ef description of the changes we have made based on the input from the mail=
ing list.

The following is updated charter text and milestones based on the mailing l=
ist conversation since the BoF. We are posting this text for review on the =
SUIT mailing list for 1 week, ending on Monday, December 11th at 23:59 UTC.=
 This review is a call for consensus on the full charter. Please indicate i=
f you support this text or if you have any objections or blocking concerns =
on this text. Please provide comments including proposed text changes ASAP =
to provide ample time for discussion.=20

Kathleen will post updated text to the Datatracker at a future date once we=
 get a sense of the mailing list discussion to follow. This will likely be =
before we have assessed consensus. We will update the Datatracker and post =
these updates to the list as needed per agreement on the list.

-- start charter text ---

Vulnerabilities in Internet of Things (IoT) devices have raised the need fo=
r a secure firmware update mechanism that is also suitable for constrained =
devices.  Security experts, researchers, and regulators recommend that all =
IoT devices be equipped with such a mechanism.  While there are many propri=
etary firmware update mechanisms in use today, there is a lack of a modern =
interoperable approach of securely updating the firmware in IoT devices. In=
 June of 2016 the Internet Architecture Board organized a workshop on 'Inte=
rnet of Things (IoT) Software Update (IOTSU)', and RFC 8240 documents vario=
us requirements and challenges that are specific to IoT devices.

A firmware update solution consists of several components, including:
* A mechanism to transport firmware images to compatible devices.
* A manifest that provides meta-data about the firmware image (such as a fi=
rmware package identifier, the hardware the package needs to run, and depen=
dencies on other firmware packages), as well as cryptographic information f=
or protecting the firmware image in an end-to-end fashion.=20
* The firmware image itself.

This group will focus on defining a firmware update solution (taking into a=
ccount past learnings from RFC 4108 and other firmware update solutions) th=
at will be usable on Class 1 (as defined in RFC 7228) devices, i.e., device=
s with ~10 KiB RAM and ~100 KiB flash.  The solution may apply to more capa=
ble devices as well.  This group will not define any new transport or disco=
very mechanisms, but may describe how to use existing mechanisms within the=
 architecture.

In particular this group aims to publish several documents, namely:
* An IoT firmware update architecture that includes a description of the in=
volved entities, security threats, and assumptions.=20
* One or more manifest format specifications.

The initial focus of this group will be development of the information mode=
l for the contents of a manifest. Once there is general agreement on the co=
ntents, the group will pick a small number of serialization formats such as=
 CBOR and/or ASN.1 (and their associated cryptographic mechanisms) to encod=
e the manifest. A small number of formats is preferred to reduce the comple=
xity of a firmware management solution, where each IoT device would typical=
ly only support one format, but the same tool or service might support all =
such formats. To support a wide range of deployment scenarios, the formats =
are expected to be expressive enough to allow the use of different firmware=
 sources and permission models.

This group does not aim to create a standard for a generic application soft=
ware update mechanism, but instead this group will focus on firmware develo=
pment practices in the embedded industry. Software update solutions that ta=
rget updating software other than the firmware binaries (e.g., applications=
) are also out of scope.

This group will aim to maintain a close relationship with silicon vendors a=
nd OEMs that develop IoT operating systems.

-- end charter text ---

-- start proposed milestones --
Date	     Milestone
Nov 2018  Submit an initial manifest serialization format to the IESG for p=
ublication as a Proposed Standard.=20
Jul 2018    Submit manifest information model to the IESG for publication a=
s Informational.=20
Jul 2018    Calendar item: Second interoperability event at IETF 102.=20
Mar 2018 Calendar item: First interoperability event at IETF 101.
Mar 2018 Adopt a manifest information model as a WG item.
Mar 2018 Adopt initial manifest serialization format(s) as WG item(s).
Jan 2018 Adopt "Architecture" document as WG item.
-- end proposed milestones --

The updated charter and milestones addresses the following concerns raised =
on the mailing list:
- The text around the IAB workshop on the Internet of Things (IoT) Software=
 Update (IOTSU) has been minimized, with a single sentence left to provide =
historical backgroud information.
- Bulleted items in the second and fourth paragraphs are now indicated by a=
n asterisk. The formatting is fixed.
- Text about RFC 4108 has been further minimized, with only a reference to =
RFC 4108 included as a source of past learnings on update solutions along w=
ith existing other work on firmware update solutions. This makes RFC 4108 p=
art of the larger body of work to consider as lessons-learned in this space=
.
- Discussion of defining the use of existing transport or discovery mechani=
sms is now referenced to be described in the architecture.
- The text on formats has been clarified to be more consistent with the dis=
cussions on the mailing list. The new text discusses the development of a m=
anifest information model that describes the manifest contents, and the dev=
elopment of one or more manifest serialization formats and crypto mechanism=
s. The information model and serialization format split has also been refle=
cted in the milestones. This leaves the actual document organization up to =
the WG, the milestones do not dictate that documents be separated (or not s=
eparated).
- The term "firmware" has been used where appropriate instead of "software"=
 to better reflect the focus of the WG on firmware update mechanisms and to=
 be consistent with the BoF meeting consensus. The milestones have been upd=
ated for more consistent use of terminology as well.
- The last paragraph has been rewritten to avoid singling out a single OS o=
r enumerating a larger list of OS's, and instead to focus on the difference=
 between firmware and applications, as discussed at the BoF.

Regards,
Dave Waltermire and Dave Thaler


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From: Michael Richardson <mcr+ietf@sandelman.ca>
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Subject: Re: [Suit] Updated Charter Text and Way Forward
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--=-=-=
Content-Type: text/plain


Waltermire, David A. (Fed) <david.waltermire@nist.gov> wrote:
    > Kathleen, Dave, and I met earlier today to discuss the charter and the way
    > forward. This email includes updated charter text and milestones, and a brief
    > description of the changes we have made based on the input from the mailing
    > list.

Thank you, I have no significant objections to the text, and if we went ahead
as-is, I'd consider my nitpick comments below to be in the rough.

    > In particular this group aims to publish several documents, namely:
    > * An IoT firmware update architecture that includes a description of the
    > involved entities, security threats, and assumptions.

    > * One or more manifest format specifications.

Do you want to change, "namely" to "including", such that the chairs can
decide how/if we are creating a seperate requirements document (which the
IESG is not keen on anymore), or simply having architecture and requirements
as part of another document?

    > The initial focus of this group will be development of the information model
    > for the contents of a manifest.

If this means YANG, please say so.
If it could be some other modelling language, then please say so.
If the idea is have just descriptive text, again, I'd like to know.

(I'd prefer it to use YANG.
I'm not a YANG lawyer, I feel confident I could play one on TV now, and I
believe I might volunteer to write part of a document.  The YANG->SID->CBOR
path is very close to being ready for prime time.)

    > Once there is general agreement on the
    > contents, the group will pick a small number of serialization formats such as
    > CBOR and/or ASN.1 (and their associated cryptographic mechanisms) to encode

With the caveat that ASN.1 and CBOR are in difference categories.
  ASN.1 <-> YANG     information model
  DER   <-> CBOR     serialization format

    > This group will aim to maintain a close relationship with silicon vendors and
    > OEMs that develop IoT operating systems.

As I said before, I'd like to know what this means from a concrete point of
view.  What metrics might the IESG use to decide if we are succeeding?
("Tell me how you'll measure me, and I'll tell you how I'll behave")

    > Jul 2018 Calendar item: Second interoperability event at IETF 102.
    > Mar 2018 Calendar item: First interoperability event at IETF 101.

If we can get there by then, great.   I'm doubtful.

    > Mar 2018 Adopt a manifest information model as a WG item.
    > Mar 2018 Adopt initial manifest serialization format(s) as WG item(s).
    > Jan 2018 Adopt "Architecture" document as WG item.

I don't know if the informational model or the requirements go in the architecture document.
I think that they do?

    > Regards,
    > Dave Waltermire and Dave Thaler

Thanks, I really like the new text.

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




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--=-=-=--


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From: Dave Thaler <dthaler@microsoft.com>
To: Michael Richardson <mcr+ietf@sandelman.ca>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Updated Charter Text and Way Forward
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Subject: Re: [Suit] Updated Charter Text and Way Forward
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>    > The initial focus of this group will be development of the informati=
on model
>    > for the contents of a manifest.
>
> If this means YANG, please say so.
> If it could be some other modelling language, then please say so.
> If the idea is have just descriptive text, again, I'd like to know.

I believe our (the chairs') intent was just to generically say that even if=
 there's different serialization=20
formats, there is just one common conceptual information model so that the =
same tool/UI/service/whatever
could be used with devices that use different serialization formats, which =
is how we read the BoF/list consensus.=20
Whether that is in a YANG data model or something else is left to the WG to=
 decide, as opposed
to being constrained by charter.  That's because we want to charter while t=
hat discussion is still=20
ongoing, rather than wait.

Dave Thaler


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From: Dave Thaler <dthaler@microsoft.com>
To: "suit@ietf.org" <suit@ietf.org>
Thread-Topic: Proposed WG name and software vs firmware
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/ropgWJC5V1ZuR9i4-zYGehvXtNc>
Subject: [Suit] Proposed WG name and software vs firmware
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One of the discussions we had during the BoF was about the relationship bet=
ween SUIT and TEEP,
and there was consensus that SUIT would focus on "firmware" used for boot, =
as opposed to
"applications" that could be installed later which was the focus of TEEP.  =
 As such, I believe
we said that the term "firmware" was more precise for SUIT than "software" =
in general.

So when Dave W. and I did the latest edits that he just sent out, the text =
is careful to always use the
term "firmware" when it's talking about what's in scope, and "software" is =
only used in more generic
text (e.g., about what's NOT in scope), etc.

The last remaining use is in the BoF title "Software Update for the Interne=
t of Things (SUIT)".
We discussed possible alternatives, and would like to suggest the name

FiRmware Update for the Internet of Things (FRUIT)

We believe this change (s/Software/FiRmware/) would be more consistent with=
 the charter text
and the consensus of the BoF and the list.    It's also important for all t=
o understand that, even if
the mailing list name changes, the full email archive would be kept and mov=
ed to the new list,
so email history is not a blocker.

Comments on the proposed FRUIT name?

Dave

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<p class=3D"MsoNormal">One of the discussions we had during the BoF was abo=
ut the relationship between SUIT and TEEP,<br>
and there was consensus that SUIT would focus on &#8220;firmware&#8221; use=
d for boot, as opposed to<o:p></o:p></p>
<p class=3D"MsoNormal">&#8220;applications&#8221; that could be installed l=
ater which was the focus of TEEP.&nbsp;&nbsp; As such, I believe<o:p></o:p>=
</p>
<p class=3D"MsoNormal">we said that the term &#8220;firmware&#8221; was mor=
e precise for SUIT than &#8220;software&#8221; in general.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">So when Dave W. and I did the latest edits that he j=
ust sent out, the text is careful to always use the<o:p></o:p></p>
<p class=3D"MsoNormal">term &#8220;firmware&#8221; when it&#8217;s talking =
about what&#8217;s in scope, and &#8220;software&#8221; is only used in mor=
e generic<o:p></o:p></p>
<p class=3D"MsoNormal">text (e.g., about what&#8217;s NOT in scope), etc.<o=
:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">The last remaining use is in the BoF title &#8220;So=
ftware Update for the Internet of Things (SUIT)&#8221;.<o:p></o:p></p>
<p class=3D"MsoNormal">We discussed possible alternatives, and would like t=
o suggest the name<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"text-indent:.5in">FiRmware Update for the I=
nternet of Things (FRUIT)<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">We believe this change (s/Software/FiRmware/) would =
be more consistent with the charter text
<o:p></o:p></p>
<p class=3D"MsoNormal">and the consensus of the BoF and the list.&nbsp;&nbs=
p;&nbsp; It&#8217;s also important for all to understand that, even if<o:p>=
</o:p></p>
<p class=3D"MsoNormal">the mailing list name changes, the full email archiv=
e would be kept and moved to the new list,<o:p></o:p></p>
<p class=3D"MsoNormal">so email history is not a blocker.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Comments on the proposed FRUIT name?<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Dave<o:p></o:p></p>
</div>
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Dave Thaler <dthaler@microsoft.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: Proposed WG name and software vs firmware
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Date: Tue, 5 Dec 2017 10:07:09 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/4f5MkJB0IyXVSTYtPxNEkGmsgsI>
Subject: Re: [Suit] Proposed WG name and software vs firmware
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Sounds good for me. It makes sense to me to be more precise regarding the S=
UIT/TEEP separation.

From: Suit [mailto:suit-bounces@ietf.org] On Behalf Of Dave Thaler
Sent: 04 December 2017 23:52
To: suit@ietf.org
Subject: [Suit] Proposed WG name and software vs firmware

One of the discussions we had during the BoF was about the relationship bet=
ween SUIT and TEEP,
and there was consensus that SUIT would focus on "firmware" used for boot, =
as opposed to
"applications" that could be installed later which was the focus of TEEP.  =
 As such, I believe
we said that the term "firmware" was more precise for SUIT than "software" =
in general.

So when Dave W. and I did the latest edits that he just sent out, the text =
is careful to always use the
term "firmware" when it's talking about what's in scope, and "software" is =
only used in more generic
text (e.g., about what's NOT in scope), etc.

The last remaining use is in the BoF title "Software Update for the Interne=
t of Things (SUIT)".
We discussed possible alternatives, and would like to suggest the name

FiRmware Update for the Internet of Things (FRUIT)

We believe this change (s/Software/FiRmware/) would be more consistent with=
 the charter text
and the consensus of the BoF and the list.    It's also important for all t=
o understand that, even if
the mailing list name changes, the full email archive would be kept and mov=
ed to the new list,
so email history is not a blocker.

Comments on the proposed FRUIT name?

Dave
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 =
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<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Sounds good for me. It=
 makes sense to me to be more precise regarding the SUIT/TEEP separation.<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><a name=3D"_MailEndCompose"><span style=3D"color:#1F=
497D"><o:p>&nbsp;</o:p></span></a></p>
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0cm 0cm">
<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:suit-bounces@ietf.org]
<b>On Behalf Of </b>Dave Thaler<br>
<b>Sent:</b> 04 December 2017 23:52<br>
<b>To:</b> suit@ietf.org<br>
<b>Subject:</b> [Suit] Proposed WG name and software vs firmware<o:p></o:p>=
</span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">One of the discussions we had d=
uring the BoF was about the relationship between SUIT and TEEP,<br>
and there was consensus that SUIT would focus on &#8220;firmware&#8221; use=
d for boot, as opposed to<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">&#8220;applications&#8221; that=
 could be installed later which was the focus of TEEP.&nbsp;&nbsp; As such,=
 I believe<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">we said that the term &#8220;fi=
rmware&#8221; was more precise for SUIT than &#8220;software&#8221; in gene=
ral.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">So when Dave W. and I did the l=
atest edits that he just sent out, the text is careful to always use the<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">term &#8220;firmware&#8221; whe=
n it&#8217;s talking about what&#8217;s in scope, and &#8220;software&#8221=
; is only used in more generic<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">text (e.g., about what&#8217;s =
NOT in scope), etc.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The last remaining use is in th=
e BoF title &#8220;Software Update for the Internet of Things (SUIT)&#8221;=
.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">We discussed possible alternati=
ves, and would like to suggest the name<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-indent:36.0pt"><span lang=3D"EN-US">Fi=
Rmware Update for the Internet of Things (FRUIT)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">We believe this change (s/Softw=
are/FiRmware/) would be more consistent with the charter text
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">and the consensus of the BoF an=
d the list.&nbsp;&nbsp;&nbsp; It&#8217;s also important for all to understa=
nd that, even if<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">the mailing list name changes, =
the full email archive would be kept and moved to the new list,<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">so email history is not a block=
er.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Comments on the proposed FRUIT =
name?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Dave<o:p></o:p></span></p>
</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.
</body>
</html>

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From: Brendan Moran <Brendan.Moran@arm.com>
To: Suhas Nandakumar <suhasietf@gmail.com>
CC: suit <suit@ietf.org>
Thread-Topic: [Suit] SUIT Charter: Multisource signed manifest and permission model
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Subject: Re: [Suit] SUIT Charter: Multisource signed manifest and permission model
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--_000_7431B68E36A1438DAD6C942B121EB9B2armcom_--


From nobody Tue Dec  5 02:44:59 2017
Return-Path: <Brendan.Moran@arm.com>
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From: Brendan Moran <Brendan.Moran@arm.com>
To: Dave Thaler <dthaler@microsoft.com>
CC: "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Proposed WG name and software vs firmware
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/20NnkIbz--TxAEwMDyDU7JJV6GI>
Subject: Re: [Suit] Proposed WG name and software vs firmware
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From nobody Tue Dec  5 05:05:41 2017
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Subject: Re: [Suit] Proposed WG name and software vs firmware
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Content-Type: text/plain


I prefer SUIT to FRUIT, but you make a good point that we carefully talk
about firmware except in the title.  I can live with either.

Perhaps someone can come up with an expansion of "FRUITFUL" :-)
or some other non-english word as Brendan Moran suggests.

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




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From nobody Tue Dec  5 05:58:15 2017
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On Dec 5, 2017, at 11:07, Hannes Tschofenig <Hannes.Tschofenig@arm.com> =
wrote:
>=20
> FiRmware Update for the Internet of Things (FRUIT)

Aw.  I wanted

	Firmware Replacement for the Internet of ThingZ (FRITZ)

(Sorry.  Not really googleable either.)

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


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


Kathleen points out that I thought I was posting to the list, but I was not.

I had asked:

    charter> This group will aim to maintain a close relationship with silicon
    charter> vendors and OEMs that develop IoT operating systems.

    mcr> It would be nice if someone could indicate how we are going to do that.
    mcr> For instance, would having an interim meeting at some embedded conference
    mcr> be
    mcr> within this scope?    Should have have some formal liason process?
    mcr>
    mcr> Would the chairs be willing to maintain a set of canonical (having been subject
    mcr> to a WG consensus call...) slides as to what we are doing, where we are, such
    mcr> that participants in the WG would feel confident representing the views of the
    mcr> WG in other fora?

I then said:
    mcr> I realize re-reading this that I am communicating with the BOF chairs, and we
    mcr> have no idea who the WG chairs might be, so of course "they" can not answer.

    mcr> My question is therefore to the ML:  what do you think this part means, and
    mcr> what do yo think about producing some useful educational material that is not
    mcr> in the form of an internet-draft?

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




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From nobody Tue Dec  5 06:47:10 2017
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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Date: Tue, 5 Dec 2017 09:46:26 -0500
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To: Carsten Bormann <cabo@tzi.org>
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Subject: Re: [Suit] Proposed WG name and software vs firmware
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In terms of searching, if you just add IETF into the search, it will
pop out on top.

IETF SUIT
IETF FRUIT - once it is changed.

Best regards,
Kathleen

On Tue, Dec 5, 2017 at 8:58 AM, Carsten Bormann <cabo@tzi.org> wrote:
> On Dec 5, 2017, at 11:07, Hannes Tschofenig <Hannes.Tschofenig@arm.com> w=
rote:
>>
>> FiRmware Update for the Internet of Things (FRUIT)
>
> Aw.  I wanted
>
>         Firmware Replacement for the Internet of ThingZ (FRITZ)
>
> (Sorry.  Not really googleable either.)
>
> Gr=C3=BC=C3=9Fe, Carsten
>
> _______________________________________________
> Suit mailing list
> Suit@ietf.org
> https://www.ietf.org/mailman/listinfo/suit



--=20

Best regards,
Kathleen


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From: "Waltermire, David A. (Fed)" <david.waltermire@nist.gov>
To: Michael Richardson <mcr+ietf@sandelman.ca>, "suit@ietf.org" <suit@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/mnl2FcLYPaQVw7FTdDT7RuVg_2c>
Subject: Re: [Suit] Suit Charter Updates Process Question
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Michael,

Comments below.

> From: Suit [mailto:suit-bounces@ietf.org] On Behalf Of Michael Richardson
> Sent: Tuesday, December 05, 2017 9:38 AM
> To: suit@ietf.org
> Subject: Re: [Suit] Suit Charter Updates Process Question
>=20
> Kathleen points out that I thought I was posting to the list, but I was n=
ot.
>=20
> I had asked:
>=20
>     charter> This group will aim to maintain a close relationship with si=
licon
>     charter> vendors and OEMs that develop IoT operating systems.
>=20
>     mcr> It would be nice if someone could indicate how we are going to d=
o that.
>     mcr> For instance, would having an interim meeting at some embedded
> conference
>     mcr> be
>     mcr> within this scope?    Should have have some formal liason proces=
s?
>     mcr>
>     mcr> Would the chairs be willing to maintain a set of canonical (havi=
ng been
> subject
>     mcr> to a WG consensus call...) slides as to what we are doing, where=
 we are,
> such
>     mcr> that participants in the WG would feel confident representing th=
e views
> of the
>     mcr> WG in other fora?

I have expressed interest in staying on as a chair after the WG is formed. =
If I am asked to stay as chair, I would be happy to maintain some slides wi=
th some help from the key protagonists in the group. Otherwise, I cannot sp=
eak for the new chairs as Michael has stated below.

> I then said:
>     mcr> I realize re-reading this that I am communicating with the BOF c=
hairs,
> and we
>     mcr> have no idea who the WG chairs might be, so of course "they" can=
 not
> answer.
>=20
>     mcr> My question is therefore to the ML:  what do you think this part=
 means,
> and
>     mcr> what do yo think about producing some useful educational materia=
l that
> is not
>     mcr> in the form of an internet-draft?

As a participant, I think once we have a solution, we will need to increase=
 awareness of the solution. Having some shared education materials could be=
 useful to help with this.

> --
> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works  -
> =3D IPv6 IoT consulting =3D-

Thanks,
Dave


From nobody Tue Dec  5 06:56:07 2017
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To: Dave Thaler <dthaler@microsoft.com>, "suit@ietf.org" <suit@ietf.org>
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Subject: Re: [Suit] Proposed WG name and software vs firmware
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Subject: Re: [Suit] Proposed WG name and software vs firmware
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May we have fruitful discussions that lead to a suitable set of solutions=
=2E


On 12/5/17 12:51 AM, Dave Thaler wrote:
>
> One of the discussions we had during the BoF was about the
> relationship between SUIT and TEEP,
> and there was consensus that SUIT would focus on =E2=80=9Cfirmware=E2=80=
=9D used for
> boot, as opposed to
>
> =E2=80=9Capplications=E2=80=9D that could be installed later which was =
the focus of
> TEEP.=C2=A0=C2=A0 As such, I believe
>
> we said that the term =E2=80=9Cfirmware=E2=80=9D was more precise for S=
UIT than
> =E2=80=9Csoftware=E2=80=9D in general.
>
> =C2=A0
>
> So when Dave W. and I did the latest edits that he just sent out, the
> text is careful to always use the
>
> term =E2=80=9Cfirmware=E2=80=9D when it=E2=80=99s talking about what=E2=
=80=99s in scope, and
> =E2=80=9Csoftware=E2=80=9D is only used in more generic
>
> text (e.g., about what=E2=80=99s NOT in scope), etc.
>
> =C2=A0
>
> The last remaining use is in the BoF title =E2=80=9CSoftware Update for=
 the
> Internet of Things (SUIT)=E2=80=9D.
>
> We discussed possible alternatives, and would like to suggest the name
>
> =C2=A0
>
> FiRmware Update for the Internet of Things (FRUIT)
>
> =C2=A0
>
> We believe this change (s/Software/FiRmware/) would be more consistent
> with the charter text
>
> and the consensus of the BoF and the list.=C2=A0=C2=A0=C2=A0 It=E2=80=99=
s also important for
> all to understand that, even if
>
> the mailing list name changes, the full email archive would be kept
> and moved to the new list,
>
> so email history is not a blocker.
>
> =C2=A0
>
> Comments on the proposed FRUIT name?
>
> =C2=A0
>
> Dave
>
>
>
> _______________________________________________
> Suit mailing list
> Suit@ietf.org
> https://www.ietf.org/mailman/listinfo/suit


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    <p>May we have fruitful discussions that lead to a suitable set of
      solutions.<br>
    </p>
    <br>
    <div class=3D"moz-cite-prefix">On 12/5/17 12:51 AM, Dave Thaler wrote=
:<br>
    </div>
    <blockquote type=3D"cite"
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      <div class=3D"WordSection1">
        <p class=3D"MsoNormal">One of the discussions we had during the
          BoF was about the relationship between SUIT and TEEP,<br>
          and there was consensus that SUIT would focus on =E2=80=9Cfirmw=
are=E2=80=9D
          used for boot, as opposed to<o:p></o:p></p>
        <p class=3D"MsoNormal">=E2=80=9Capplications=E2=80=9D that could =
be installed
          later which was the focus of TEEP.=C2=A0=C2=A0 As such, I belie=
ve<o:p></o:p></p>
        <p class=3D"MsoNormal">we said that the term =E2=80=9Cfirmware=E2=
=80=9D was more
          precise for SUIT than =E2=80=9Csoftware=E2=80=9D in general.<o:=
p></o:p></p>
        <p class=3D"MsoNormal"><o:p>=C2=A0</o:p></p>
        <p class=3D"MsoNormal">So when Dave W. and I did the latest edits=

          that he just sent out, the text is careful to always use the<o:=
p></o:p></p>
        <p class=3D"MsoNormal">term =E2=80=9Cfirmware=E2=80=9D when it=E2=
=80=99s talking about
          what=E2=80=99s in scope, and =E2=80=9Csoftware=E2=80=9D is only=
 used in more generic<o:p></o:p></p>
        <p class=3D"MsoNormal">text (e.g., about what=E2=80=99s NOT in sc=
ope),
          etc.<o:p></o:p></p>
        <p class=3D"MsoNormal"><o:p>=C2=A0</o:p></p>
        <p class=3D"MsoNormal">The last remaining use is in the BoF title=

          =E2=80=9CSoftware Update for the Internet of Things (SUIT)=E2=80=
=9D.<o:p></o:p></p>
        <p class=3D"MsoNormal">We discussed possible alternatives, and
          would like to suggest the name<o:p></o:p></p>
        <p class=3D"MsoNormal"><o:p>=C2=A0</o:p></p>
        <p class=3D"MsoNormal" style=3D"text-indent:.5in">FiRmware Update=

          for the Internet of Things (FRUIT)<o:p></o:p></p>
        <p class=3D"MsoNormal"><o:p>=C2=A0</o:p></p>
        <p class=3D"MsoNormal">We believe this change
          (s/Software/FiRmware/) would be more consistent with the
          charter text
          <o:p></o:p></p>
        <p class=3D"MsoNormal">and the consensus of the BoF and the
          list.=C2=A0=C2=A0=C2=A0 It=E2=80=99s also important for all to =
understand that, even
          if<o:p></o:p></p>
        <p class=3D"MsoNormal">the mailing list name changes, the full
          email archive would be kept and moved to the new list,<o:p></o:=
p></p>
        <p class=3D"MsoNormal">so email history is not a blocker.<o:p></o=
:p></p>
        <p class=3D"MsoNormal"><o:p>=C2=A0</o:p></p>
        <p class=3D"MsoNormal">Comments on the proposed FRUIT name?<o:p><=
/o:p></p>
        <p class=3D"MsoNormal"><o:p>=C2=A0</o:p></p>
        <p class=3D"MsoNormal">Dave<o:p></o:p></p>
      </div>
      <br>
      <fieldset class=3D"mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap=3D"">_______________________________________________
Suit mailing list
<a class=3D"moz-txt-link-abbreviated" href=3D"mailto:Suit@ietf.org">Suit@=
ietf.org</a>
<a class=3D"moz-txt-link-freetext" href=3D"https://www.ietf.org/mailman/l=
istinfo/suit">https://www.ietf.org/mailman/listinfo/suit</a>
</pre>
    </blockquote>
    <br>
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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Date: Tue, 5 Dec 2017 10:03:58 -0500
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Subject: Re: [Suit] Updated Charter Text and Way Forward
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Hi,

Just responding on the one point of IESG preferences as the BoF chairs
are managing the rest.

On Mon, Dec 4, 2017 at 6:21 PM, Michael Richardson
<mcr+ietf@sandelman.ca> wrote:
>
> Waltermire, David A. (Fed) <david.waltermire@nist.gov> wrote:
>     > Kathleen, Dave, and I met earlier today to discuss the charter and the way
>     > forward. This email includes updated charter text and milestones, and a brief
>     > description of the changes we have made based on the input from the mailing
>     > list.
>
> Thank you, I have no significant objections to the text, and if we went ahead
> as-is, I'd consider my nitpick comments below to be in the rough.
>
>     > In particular this group aims to publish several documents, namely:
>     > * An IoT firmware update architecture that includes a description of the
>     > involved entities, security threats, and assumptions.
>
>     > * One or more manifest format specifications.
>
> Do you want to change, "namely" to "including", such that the chairs can
> decide how/if we are creating a seperate requirements document (which the
> IESG is not keen on anymore), or simply having architecture and requirements
> as part of another document?
>
>     > The initial focus of this group will be development of the information model
>     > for the contents of a manifest.
>
> If this means YANG, please say so.
> If it could be some other modelling language, then please say so.
> If the idea is have just descriptive text, again, I'd like to know.
>
> (I'd prefer it to use YANG.
> I'm not a YANG lawyer, I feel confident I could play one on TV now, and I
> believe I might volunteer to write part of a document.  The YANG->SID->CBOR
> path is very close to being ready for prime time.)
>
>     > Once there is general agreement on the
>     > contents, the group will pick a small number of serialization formats such as
>     > CBOR and/or ASN.1 (and their associated cryptographic mechanisms) to encode
>
> With the caveat that ASN.1 and CBOR are in difference categories.
>   ASN.1 <-> YANG     information model
>   DER   <-> CBOR     serialization format
>
>     > This group will aim to maintain a close relationship with silicon vendors and
>     > OEMs that develop IoT operating systems.
>
> As I said before, I'd like to know what this means from a concrete point of
> view.  What metrics might the IESG use to decide if we are succeeding?
> ("Tell me how you'll measure me, and I'll tell you how I'll behave

Liaisons should be sent when appropriate to inform related groups of
progress or with potential issues to discuss.  If issues bubble up to
the IESG needing more than a WG chair liaison statement, then the IESG
will be concerned.

>
>     > Jul 2018 Calendar item: Second interoperability event at IETF 102.
>     > Mar 2018 Calendar item: First interoperability event at IETF 101.
>
> If we can get there by then, great.   I'm doubtful.
>
>     > Mar 2018 Adopt a manifest information model as a WG item.
>     > Mar 2018 Adopt initial manifest serialization format(s) as WG item(s).
>     > Jan 2018 Adopt "Architecture" document as WG item.
>
> I don't know if the informational model or the requirements go in the architecture document.
> I think that they do?

This depends on how you scope the architecture document.  Some really
nice ones have come through the IESG recently that were very well
received.  The ones that seemed the most useful (at least to the IESG)
were architecture documents that connected the various WG documents
and documents outside of the WG and came late in the WG process.  They
are helpful documents that will live on and be useful to someone
wanting to piece together the architecture for the protocol(s) with
explicit pointers to documents.  The requirements could be in such a
draft and then the requirements could change as needed when the work
evolves as opposed to a set of requirements that holds the WG to early
requirements.

I'd keep the information model separate, but that's me as an
individual, not AD.  The AD is here to support WG decisions and offer
guidance.

>
>     > Regards,
>     > Dave Waltermire and Dave Thaler
>
> Thanks, I really like the new text.

Excellent.  Nice work, everyone!

Thank you,
Kathleen
>
> --
> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
>  -= IPv6 IoT consulting =-
>
>
>
>
> _______________________________________________
> Suit mailing list
> Suit@ietf.org
> https://www.ietf.org/mailman/listinfo/suit
>



-- 

Best regards,
Kathleen


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


Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com> wrote:
    >> > This group will aim to maintain a close relationship with silicon vendors and
    >> > OEMs that develop IoT operating systems.
    >>
    >> As I said before, I'd like to know what this means from a concrete point of
    >> view.  What metrics might the IESG use to decide if we are succeeding?
    >> ("Tell me how you'll measure me, and I'll tell you how I'll behave

    > Liaisons should be sent when appropriate to inform related groups of
    > progress or with potential issues to discuss.  If issues bubble up to
    > the IESG needing more than a WG chair liaison statement, then the IESG
    > will be concerned.

The Liason process has always seemed very formal; I suspect that this is
because we mostly liason with other entities (so-called SDOs) that do not
really recognize individuals.

I think that the liason system is not a good way to keep in touch with
silicon vendors and OEMs.  I am taking this to mean that we need to reach
into the places that they communicate and talk.   Ones that are relatively
close (due to shared people) might include Fairhair, Thread, OCF, OIC, and
IOTSF.   I'm sure that ARM has some kind of conference or meeting that Hannes
can tell us about.... I'd like to see us deputize someone (maybe Hannes) to
socialize things there.

Kathleen, so you told us about metrics that if non-zero would alarm the IESG.
(Things that WG chairs could not deal with).
But what metrics would the IESG use to know if we were doing a good job here?

    > This depends on how you scope the architecture document.  Some really
    > nice ones have come through the IESG recently that were very well
    > received.  The ones that seemed the most useful (at least to the IESG)
    > were architecture documents that connected the various WG documents
    > and documents outside of the WG and came late in the WG process.

I also like such documents.
Can you point to specific examples here?

I think that they should be started now, be maintained as we go, and should
get published last.   The work on it should be specifically iterative, and
not waterfall in nature.

    > They
    > are helpful documents that will live on and be useful to someone
    > wanting to piece together the architecture for the protocol(s) with
    > explicit pointers to documents.  The requirements could be in such a
    > draft and then the requirements could change as needed when the work
    > evolves as opposed to a set of requirements that holds the WG to early
    > requirements.

+1

    > I'd keep the information model separate, but that's me as an
    > individual, not AD.  The AD is here to support WG decisions and offer
    > guidance.

I think that this is reasonable, but is not reflected in the milestones.
Should I suggest some radical changes to the milestones, or shall I wait for
chartering?

I think we are not on the agenda for the telechat on the 14th anymore?

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




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Subject: Re: [Suit] Updated Charter Text and Way Forward
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Hi Michael,

On Tue, Dec 5, 2017 at 2:34 PM, Michael Richardson
<mcr+ietf@sandelman.ca> wrote:
>
> Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com> wrote:
>     >> > This group will aim to maintain a close relationship with silicon vendors and
>     >> > OEMs that develop IoT operating systems.
>     >>
>     >> As I said before, I'd like to know what this means from a concrete point of
>     >> view.  What metrics might the IESG use to decide if we are succeeding?
>     >> ("Tell me how you'll measure me, and I'll tell you how I'll behave
>
>     > Liaisons should be sent when appropriate to inform related groups of
>     > progress or with potential issues to discuss.  If issues bubble up to
>     > the IESG needing more than a WG chair liaison statement, then the IESG
>     > will be concerned.
>
> The Liason process has always seemed very formal; I suspect that this is
> because we mostly liason with other entities (so-called SDOs) that do not
> really recognize individuals.
>
> I think that the liason system is not a good way to keep in touch with
> silicon vendors and OEMs.  I am taking this to mean that we need to reach
> into the places that they communicate and talk.   Ones that are relatively
> close (due to shared people) might include Fairhair, Thread, OCF, OIC, and
> IOTSF.   I'm sure that ARM has some kind of conference or meeting that Hannes
> can tell us about.... I'd like to see us deputize someone (maybe Hannes) to
> socialize things there.

Good point, thank you.  I was mainly thinking about the BoF discussion
on GP in this response.

>
> Kathleen, so you told us about metrics that if non-zero would alarm the IESG.
> (Things that WG chairs could not deal with).
> But what metrics would the IESG use to know if we were doing a good job here?

Meeting milestones and staying within the charter (or altered charter)
of work is the first metric. The IESG is also concerns with working
groups that spin there wheels in bike shed arguments for too long.
So, if the WG gets hung up on format prioritization or something
similar, this will raise a concern.  If the WG makes decisions, they
should not be revisited at a high frequency, but rather clearly
documented for reference so the WG can continue based on that
agreement.  I have spoken to the BoF chairs about this already and
have some strategies to assist with this goal of being productive.

Producing useful and implemented specs is also a measure of success -
probably the most important one.  I'm partial to having them
documented in CodeStand.ietf.org as it will be integrated with the
tracker soon and you'll be able to see how many implementations there
are for any draft or RFC if used consistently.

>
>     > This depends on how you scope the architecture document.  Some really
>     > nice ones have come through the IESG recently that were very well
>     > received.  The ones that seemed the most useful (at least to the IESG)
>     > were architecture documents that connected the various WG documents
>     > and documents outside of the WG and came late in the WG process.
>
> I also like such documents.
> Can you point to specific examples here?

Sure, and I meant to do that.  The RTCweb one was received extremely well.
https://datatracker.ietf.org/doc/draft-ietf-rtcweb-overview/>

> I think that they should be started now, be maintained as we go, and should
> get published last.   The work on it should be specifically iterative, and
> not waterfall in nature.

Agreed.

>
>     > They
>     > are helpful documents that will live on and be useful to someone
>     > wanting to piece together the architecture for the protocol(s) with
>     > explicit pointers to documents.  The requirements could be in such a
>     > draft and then the requirements could change as needed when the work
>     > evolves as opposed to a set of requirements that holds the WG to early
>     > requirements.
>
> +1
>
>     > I'd keep the information model separate, but that's me as an
>     > individual, not AD.  The AD is here to support WG decisions and offer
>     > guidance.
>
> I think that this is reasonable, but is not reflected in the milestones.
> Should I suggest some radical changes to the milestones, or shall I wait for
> chartering?

Suggest away, it would be good to get agreement on these and see what
the BoF chairs and list participants have to say.

>
> I think we are not on the agenda for the telechat on the 14th anymore?

As of right now, it is still reasonable per the timeline Dave posted.
If there is agreement, why hold things up?  I'll post the updated text
to the datatracker in the next day or so and make edits as needed.  We
could then send out the charter to the announce lists for external
reviewers as well, giving them another week to review and comment.

I don't think any of the charter changes were radical.

Best regards,
Kathleen

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



-- 

Best regards,
Kathleen


From nobody Tue Dec  5 16:54:06 2017
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From: Toerless Eckert <tte@cs.fau.de>
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Subject: Re: [Suit] Proposed WG name and software vs firmware
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Suspicions about the geek nature of participants make me think this is
just a trick to get a more funny WG name, but i ca not find a flaw in your argument.

On Mon, Dec 04, 2017 at 11:51:54PM +0000, Dave Thaler wrote:
> One of the discussions we had during the BoF was about the relationship between SUIT and TEEP,
> and there was consensus that SUIT would focus on "firmware" used for boot, as opposed to
> "applications" that could be installed later which was the focus of TEEP.   As such, I believe
> we said that the term "firmware" was more precise for SUIT than "software" in general.
> 
> So when Dave W. and I did the latest edits that he just sent out, the text is careful to always use the
> term "firmware" when it's talking about what's in scope, and "software" is only used in more generic
> text (e.g., about what's NOT in scope), etc.
> 
> The last remaining use is in the BoF title "Software Update for the Internet of Things (SUIT)".
> We discussed possible alternatives, and would like to suggest the name
> 
> FiRmware Update for the Internet of Things (FRUIT)
> 
> We believe this change (s/Software/FiRmware/) would be more consistent with the charter text
> and the consensus of the BoF and the list.    It's also important for all to understand that, even if
> the mailing list name changes, the full email archive would be kept and moved to the new list,
> so email history is not a blocker.
> 
> Comments on the proposed FRUIT name?
> 
> Dave

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


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Subject: Re: [Suit] Proposed WG name and software vs firmware
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Hello,

there seem to be a lot of pros and cons, but as Kathleen highlighted 
"search results provided by a search engine" seems not to be a deciding 
factor here, I think.

Instead, I would like to raise a pair of individually selected pro&con:

Pro: The name FirmwareUIT will probably create a better demarcation line 
- wrt the initial proposal of Hannes - between two potential WG, which 
helps associating contributions with the right working group (i.e. 
firmware vs. applications).

Con: We are starting to differentiate firmware and software. This is 
done in a lot of places... and does not always makes sense in a lot of 
places also, I think.
In consequence, this approach probably requires a useful definition of 
firmware that distinguishes it from any other kind of software 
(otherwise software - or, in extension of that term, applications or 
apps - will also be in scope of the manifest at some point, I assume).

I.e., one vital question seems to be:

Is this correct?
1.) firmware is limited to the "booting of a thing"
2.) software is about the scope of every other software that is not 
about the "booting of a thing".

If so, FRUIT it is. If not, stay with SUIT, I guess.

Any comments on trying to provide a more focused decision point here?

Viele Grüße,

Henk

p.s. I realize that this is just a discussion about how to name a WG...



On 12/05/2017 12:51 AM, Dave Thaler wrote:
> One of the discussions we had during the BoF was about the relationship 
> between SUIT and TEEP,
> and there was consensus that SUIT would focus on “firmware” used for 
> boot, as opposed to
> 
> “applications” that could be installed later which was the focus of 
> TEEP.   As such, I believe
> 
> we said that the term “firmware” was more precise for SUIT than 
> “software” in general.
> 
> So when Dave W. and I did the latest edits that he just sent out, the 
> text is careful to always use the
> 
> term “firmware” when it’s talking about what’s in scope, and “software” 
> is only used in more generic
> 
> text (e.g., about what’s NOT in scope), etc.
> 
> The last remaining use is in the BoF title “Software Update for the 
> Internet of Things (SUIT)”.
> 
> We discussed possible alternatives, and would like to suggest the name
> 
> FiRmware Update for the Internet of Things (FRUIT)
> 
> We believe this change (s/Software/FiRmware/) would be more consistent 
> with the charter text
> 
> and the consensus of the BoF and the list.    It’s also important for 
> all to understand that, even if
> 
> the mailing list name changes, the full email archive would be kept and 
> moved to the new list,
> 
> so email history is not a blocker.
> 
> Comments on the proposed FRUIT name?
> 
> Dave
> 
> 
> 
> _______________________________________________
> Suit mailing list
> Suit@ietf.org
> https://www.ietf.org/mailman/listinfo/suit
> 


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Subject: Re: [Suit] Proposed WG name and software vs firmware
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On Dec 6, 2017, at 03:16, Henk Birkholz =
<henk.birkholz@sit.fraunhofer.de> wrote:
>=20
> p.s. I realize that this is just a discussion about how to name a =
WG=E2=80=A6

Indeed.  The protocols we create do not have to (and probably should =
not) be named after the WG name, and those are what will mostly be =
searched for.

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


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From: Brendan Moran <Brendan.Moran@arm.com>
To: Eliot Lear <lear@cisco.com>
CC: Dave Thaler <dthaler@microsoft.com>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: [Suit] Proposed WG name and software vs firmware
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/GY_OzASYVPjaMjMJUnvpPrMXXQo>
Subject: Re: [Suit] Proposed WG name and software vs firmware
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Subject: Re: [Suit] Proposed WG name and software vs firmware
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--=-=-=
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Brendan Moran <Brendan.Moran@arm.com> wrote:
    >    I very much prefer SUIT to FRUIT. I feel that it is reasonable to
    > take some artistic license in the terminology when constructing an
    > acronym for a working group. However, if the WG name really must
    > contain "firmware" instead of "software," may I suggest:

I agree, SUIT is just fine, but if we must change:

    >    ENUF: Embedded Network-Updatable Firmware

That's cool.

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




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From nobody Wed Dec  6 07:28:02 2017
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From: "Paul Hoffman" <paul.hoffman@vpnc.org>
To: "Carsten Bormann" <cabo@tzi.org>
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Subject: Re: [Suit] Proposed WG name and software vs firmware
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On 5 Dec 2017, at 23:15, Carsten Bormann wrote:

> On Dec 6, 2017, at 03:16, Henk Birkholz 
> <henk.birkholz@sit.fraunhofer.de> wrote:
>>
>> p.s. I realize that this is just a discussion about how to name a 
>> WGâ€¦
>
> Indeed.  The protocols we create do not have to (and probably should 
> not) be named after the WG name, and those are what will mostly be 
> searched for.

...initially. The IETF has a long history of WG names that overlap with 
English (and sometimes French) words, and people end up searching by RFC 
number. It is unlikely that someone who is developing IoT software will 
say "I need to find the format for manifests, they came from something 
called FRUIT, I couldn't find it in Google, so I will not develop this 
software".

Basically anyone who knows that FRUIT is/was part of the IETF will 
search for "ietf fruit" and will find what they are looking for.

--Paul Hoffman


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I am not thrilled to have the name changed again.  It started as FUD, =
then became SUIT.  That said, I can see the reason to go back to =
something that begins with "F".

How about FWLOAD?

Russ




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Subject: Re: [Suit] Proposed WG name and software vs firmware
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I like FRUIT. That said, SUIT remains suitable.

If a clearer distinction is needed between software vs firmware on those
devices,
we could/should allocate some space for that in one of the WG docs, e.g.
the architecture document?

Emmanuel





On Wed, Dec 6, 2017 at 5:24 PM, Russ Housley <housley@vigilsec.com> wrote:

> I am not thrilled to have the name changed again.  It started as FUD, then
> became SUIT.  That said, I can see the reason to go back to something that
> begins with "F".
>
> How about FWLOAD?
>
> Russ
>
>
>
> _______________________________________________
> Suit mailing list
> Suit@ietf.org
> https://www.ietf.org/mailman/listinfo/suit
>

--001a114ef4ae9be35b055fbbb299
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<div dir=3D"ltr">I like FRUIT. That said, SUIT remains suitable.<div><br><d=
iv>If a clearer distinction is needed between software vs firmware on those=
 devices,=C2=A0</div><div>we could/should allocate some space for that in o=
ne of the WG docs, e.g. the architecture document?<br></div><div><br></div>=
<div>Emmanuel</div><div><br></div><div><br></div><div><br></div><div><br></=
div></div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">O=
n Wed, Dec 6, 2017 at 5:24 PM, Russ Housley <span dir=3D"ltr">&lt;<a href=
=3D"mailto:housley@vigilsec.com" target=3D"_blank">housley@vigilsec.com</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">I am not thrilled to h=
ave the name changed again.=C2=A0 It started as FUD, then became SUIT.=C2=
=A0 That said, I can see the reason to go back to something that begins wit=
h &quot;F&quot;.<br>
<br>
How about FWLOAD?<br>
<span class=3D"HOEnZb"><font color=3D"#888888"><br>
Russ<br>
</font></span><div class=3D"HOEnZb"><div class=3D"h5"><br>
<br>
<br>
______________________________<wbr>_________________<br>
Suit mailing list<br>
<a href=3D"mailto:Suit@ietf.org">Suit@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/suit" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/suit</a><br>
</div></div></blockquote></div><br></div>

--001a114ef4ae9be35b055fbbb299--


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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Date: Fri, 8 Dec 2017 15:07:00 -0500
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Subject: Re: [Suit] Updated Charter Text and Way Forward
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The updated charter text is now posted as version 9 on the datatracker
for review:

https://datatracker.ietf.org/doc/charter-ietf-suit/

The milestones will be updated in the next few minutes.

Best regards,
Kathleen

On Tue, Dec 5, 2017 at 3:18 PM, Kathleen Moriarty
<kathleen.moriarty.ietf@gmail.com> wrote:
> Hi Michael,
>
> On Tue, Dec 5, 2017 at 2:34 PM, Michael Richardson
> <mcr+ietf@sandelman.ca> wrote:
>>
>> Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com> wrote:
>>     >> > This group will aim to maintain a close relationship with silicon vendors and
>>     >> > OEMs that develop IoT operating systems.
>>     >>
>>     >> As I said before, I'd like to know what this means from a concrete point of
>>     >> view.  What metrics might the IESG use to decide if we are succeeding?
>>     >> ("Tell me how you'll measure me, and I'll tell you how I'll behave
>>
>>     > Liaisons should be sent when appropriate to inform related groups of
>>     > progress or with potential issues to discuss.  If issues bubble up to
>>     > the IESG needing more than a WG chair liaison statement, then the IESG
>>     > will be concerned.
>>
>> The Liason process has always seemed very formal; I suspect that this is
>> because we mostly liason with other entities (so-called SDOs) that do not
>> really recognize individuals.
>>
>> I think that the liason system is not a good way to keep in touch with
>> silicon vendors and OEMs.  I am taking this to mean that we need to reach
>> into the places that they communicate and talk.   Ones that are relatively
>> close (due to shared people) might include Fairhair, Thread, OCF, OIC, and
>> IOTSF.   I'm sure that ARM has some kind of conference or meeting that Hannes
>> can tell us about.... I'd like to see us deputize someone (maybe Hannes) to
>> socialize things there.
>
> Good point, thank you.  I was mainly thinking about the BoF discussion
> on GP in this response.
>
>>
>> Kathleen, so you told us about metrics that if non-zero would alarm the IESG.
>> (Things that WG chairs could not deal with).
>> But what metrics would the IESG use to know if we were doing a good job here?
>
> Meeting milestones and staying within the charter (or altered charter)
> of work is the first metric. The IESG is also concerns with working
> groups that spin there wheels in bike shed arguments for too long.
> So, if the WG gets hung up on format prioritization or something
> similar, this will raise a concern.  If the WG makes decisions, they
> should not be revisited at a high frequency, but rather clearly
> documented for reference so the WG can continue based on that
> agreement.  I have spoken to the BoF chairs about this already and
> have some strategies to assist with this goal of being productive.
>
> Producing useful and implemented specs is also a measure of success -
> probably the most important one.  I'm partial to having them
> documented in CodeStand.ietf.org as it will be integrated with the
> tracker soon and you'll be able to see how many implementations there
> are for any draft or RFC if used consistently.
>
>>
>>     > This depends on how you scope the architecture document.  Some really
>>     > nice ones have come through the IESG recently that were very well
>>     > received.  The ones that seemed the most useful (at least to the IESG)
>>     > were architecture documents that connected the various WG documents
>>     > and documents outside of the WG and came late in the WG process.
>>
>> I also like such documents.
>> Can you point to specific examples here?
>
> Sure, and I meant to do that.  The RTCweb one was received extremely well.
> https://datatracker.ietf.org/doc/draft-ietf-rtcweb-overview/>
>
>> I think that they should be started now, be maintained as we go, and should
>> get published last.   The work on it should be specifically iterative, and
>> not waterfall in nature.
>
> Agreed.
>
>>
>>     > They
>>     > are helpful documents that will live on and be useful to someone
>>     > wanting to piece together the architecture for the protocol(s) with
>>     > explicit pointers to documents.  The requirements could be in such a
>>     > draft and then the requirements could change as needed when the work
>>     > evolves as opposed to a set of requirements that holds the WG to early
>>     > requirements.
>>
>> +1
>>
>>     > I'd keep the information model separate, but that's me as an
>>     > individual, not AD.  The AD is here to support WG decisions and offer
>>     > guidance.
>>
>> I think that this is reasonable, but is not reflected in the milestones.
>> Should I suggest some radical changes to the milestones, or shall I wait for
>> chartering?
>
> Suggest away, it would be good to get agreement on these and see what
> the BoF chairs and list participants have to say.
>
>>
>> I think we are not on the agenda for the telechat on the 14th anymore?
>
> As of right now, it is still reasonable per the timeline Dave posted.
> If there is agreement, why hold things up?  I'll post the updated text
> to the datatracker in the next day or so and make edits as needed.  We
> could then send out the charter to the announce lists for external
> reviewers as well, giving them another week to review and comment.
>
> I don't think any of the charter changes were radical.
>
> Best regards,
> Kathleen
>
>>
>> --
>> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
>>  -= IPv6 IoT consulting =-
>>
>>
>>
>
>
>
> --
>
> Best regards,
> Kathleen



-- 

Best regards,
Kathleen


From nobody Fri Dec  8 12:44:59 2017
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Subject: Re: [Suit] WG Review: Software Updates for Internet of Things (suit)
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The draft charter for the proposed Software Updates for Internet of 
Things (suit) WG underwent a few revisions during the external review 
process. The current version of the charter is -09, below. The charter 
is on the IESG agenda for 2017-12-14.

--

charter-ietf-suit-00-09

Vulnerabilities in Internet of Things (IoT) devices have raised the need
for a secure firmware update mechanism that is also suitable for 
constrained devices.  Security experts, researchers, and regulators 
recommend that all IoT devices be equipped with such a mechanism.  While 
there are many proprietary firmware update mechanisms in use today, 
there is a lack of a modern interoperable approach of securely updating 
the firmware in IoT devices. In June of 2016 the Internet Architecture 
Board organized a workshop on 'Internet of Things (IoT) Software Update 
(IOTSU)', and RFC 8240 documents various requirements and challenges 
that are specific to IoT devices.

A firmware update solution consists of several components, including:
* A mechanism to transport firmware images to compatible devices.
* A manifest that provides meta-data about the firmware image (such as a
firmware package identifier, the hardware the package needs to run, and
dependencies on other firmware packages), as well as cryptographic 
information for protecting the firmware image in an end-to-end fashion. 
* The firmware image itself.

This group will focus on defining a firmware update solution (taking 
into account past learnings from RFC 4108 and other firmware update 
solutions) that will be usable on Class 1 (as defined in RFC 7228) 
devices, i.e., devices with ~10 KiB RAM and ~100 KiB flash.  The 
solution may apply to more capable devices as well.  This group will not 
define any new transport or discovery mechanisms, but may describe how 
to use existing mechanisms within the architecture.

In particular this group aims to publish several documents, namely:
* An IoT firmware update architecture that includes a description of the
involved entities, security threats, and assumptions. 
* One or more manifest format specifications.

The initial focus of this group will be development of the information 
model for the contents of a manifest. Once there is general agreement on 
the contents, the group will pick a small number of serialization 
formats such as CBOR and/or ASN.1 (and their associated cryptographic 
mechanisms) to encode the manifest. A small number of formats is 
preferred to reduce the complexity of a firmware management solution, 
where each IoT device would typically only support one format, but the 
same tool or service might support all such formats. To support a wide 
range of deployment scenarios, the formats are expected to be expressive 
enough to allow the use of different firmware sources and permission 
models.

This group does not aim to create a standard for a generic application 
software update mechanism, but instead this group will focus on firmware 
development practices in the embedded industry. Software update 
solutions that target updating software other than the firmware binaries 
(e.g., applications) are also out of scope.

This group will aim to maintain a close relationship with silicon 
vendors and OEMs that develop IoT operating systems.

Proposed milestones

Date 		Milestone
Nov 2018 	Submit an initial manifest serialization format to the 
		IESG for publication as a Proposed Standard.
Jul 2018 	Submit manifest information model to the IESG for 
		publication as Informational.
Jul 2018 	Calendar item: Second interoperability event at IETF 
		102.
Mar 2018 	Adopt initial manifest serialization format(s) as WG 
		item(s).
Mar 2018 	Calendar item: First interoperability event at IETF 101.
Mar 2018 	Adopt a manifest information model as a WG item.
Jan 2018 	Adopt "Architecture" document as WG item. 


On Nov 3, 2017, at 9:32 AM, The IESG <iesg-secretary@ietf.org> wrote:

> The Software Updates for Internet of Things (suit) WG in the Security 
> Area of the IETF is undergoing rechartering. The IESG has not made any 
> determination yet. The following draft charter was submitted, and is 
> provided for informational purposes only. Please send your comments to 
> the IESG mailing list (iesg@ietf.org) by 2017-11-13.
> 
> Software Updates for Internet of Things (suit)
> ----------------------------------------------------------------------
> Current status: BOF WG
> 
> Chairs:
>  Dave Thaler <dthaler@microsoft.com>
>  David Waltermire <david.waltermire@nist.gov>
>  Russ Housley <housley@vigilsec.com>
> 
> Assigned Area Director:
>  Kathleen Moriarty <Kathleen.Moriarty.ietf@gmail.com>
> 
> Security Area Directors:
>  Kathleen Moriarty <Kathleen.Moriarty.ietf@gmail.com>
>  Eric Rescorla <ekr@rtfm.com>
> 
> Mailing list:
>  Address: suit@ietf.org
>  To subscribe: https://www.ietf.org/mailman/listinfo/suit
>  Archive: https://mailarchive.ietf.org/arch/search/?email_list=suit
> 
> Group page: https://datatracker.ietf.org/group/suit/
> 
> Charter: https://datatracker.ietf.org/doc/charter-ietf-suit/


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Subject: Re: [Suit] Updated Charter Text and Way Forward
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Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com> wrote:
    > The updated charter text is now posted as version 9 on the datatrack=
er
    > for review:

    > https://datatracker.ietf.org/doc/charter-ietf-suit/

Looks good.
Still some wrapping problems with the point form, but meh.
I think that I missed the message in between, but that's okay.

    >>> > This depends on how you scope the architecture document.  Some r=
eally
    >>> > nice ones have come through the IESG recently that were very wel=
l
    >>> > received.  The ones that seemed the most useful (at least to the=
 IESG)
    >>> > were architecture documents that connected the various WG docume=
nts
    >>> > and documents outside of the WG and came late in the WG process.
    >>>
    >>> I also like such documents.
    >>> Can you point to specific examples here?
    >>
    >> Sure, and I meant to do that.  The RTCweb one was received extremel=
y well.
    >> https://datatracker.ietf.org/doc/draft-ietf-rtcweb-overview/>

Thanks!

    >>> I think that this is reasonable, but is not reflected in the miles=
tones.
    >>> Should I suggest some radical changes to the milestones, or shall =
I wait for
    >>> chartering?
    >>
    >> Suggest away, it would be good to get agreement on these and see wh=
at
    >> the BoF chairs and list participants have to say.
    >>
    >>>
    >>> I think we are not on the agenda for the telechat on the 14th anym=
ore?
    >>
    >> As of right now, it is still reasonable per the timeline Dave poste=
d.
    >> If there is agreement, why hold things up?  I'll post the updated t=
ext
    >> to the datatracker in the next day or so and make edits as needed. =
 We
    >> could then send out the charter to the announce lists for external
    >> reviewers as well, giving them another week to review and comment.
    >>
    >> I don't think any of the charter changes were radical.

okay!


--
]               Never tell me the odds!                 | ipv6 mesh networ=
ks [
]   Michael Richardson, Sandelman Software Works        | network architec=
t  [
]     mcr@sandelman.ca  http://www.sandelman.ca/        |   ruby on rails =
   [


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Subject: Re: [Suit] Proposed WG name and software vs firmware
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Hello,

Thank you to those who weighed in on a possible name change.  We'll
leave the name as SUIT to avoid a name change since this was not
conclusive and most were fine with SUIT.

Best regards,
Kathleen

On Thu, Dec 7, 2017 at 3:17 AM, Emmanuel Baccelli
<Emmanuel.Baccelli@inria.fr> wrote:
> I like FRUIT. That said, SUIT remains suitable.
>
> If a clearer distinction is needed between software vs firmware on those
> devices,
> we could/should allocate some space for that in one of the WG docs, e.g. the
> architecture document?
>
> Emmanuel
>
>
>
>
>
> On Wed, Dec 6, 2017 at 5:24 PM, Russ Housley <housley@vigilsec.com> wrote:
>>
>> I am not thrilled to have the name changed again.  It started as FUD, then
>> became SUIT.  That said, I can see the reason to go back to something that
>> begins with "F".
>>
>> How about FWLOAD?
>>
>> Russ
>>
>>
>>
>> _______________________________________________
>> Suit mailing list
>> Suit@ietf.org
>> https://www.ietf.org/mailman/listinfo/suit
>
>
>
> _______________________________________________
> Suit mailing list
> Suit@ietf.org
> https://www.ietf.org/mailman/listinfo/suit
>



-- 

Best regards,
Kathleen


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From: Suhas Nandakumar <suhasietf@gmail.com>
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--f4030437c7f4b3e7ee05603c1aac
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Hello Chairs


Thanks chairs for sharing the updated charter. My apologies for delay in
responding. I totally lost track of the deadline (my bad)

Here are few concerns regarding the current charter text and would greatly
appreciate if these can be discussed or taken into consideration by the
chairs and the WG.


Major Issue:

Firmware update service discovery and mechanisms to download the firmware

The current charter says

"

This group will not define any new transport or discovery mechanisms,

but may describe how to use existing mechanisms within the architecture

"

Couple of points of concerns

1. From my recollection of BOF discussions, there was support to charter
work to discover the firmware server, the manifest and using existing
mechanisms to download the firmware image.

2. The strength of "may" in the current charter text and lacking explicit
deliverable for this, makes one conclude such a work by the WG is optional.

There are several deployments where the IoT device operating under
restricted network access cannot reach out to the manufacturer's/OEM's
website to download the firmware. Often one does not want to have a device
with unpatched firmware using the open internet to contact the vendor's
website to get a firmware update and instead a local firmware server is
used to cache the firmware.  One can expect to have local firmware server
managed by the enterprise/factory to serve the firmware.

Having charter make explicit provision for discovering such local server &
locate the manifest (and firmware) on that server at a well-known location,
as a WG deliverable, will be super beneficial and helps in a great deal
towards building interoperable solution.

To that extent, may i propose splitting the WG deliverables as below (
including some text suggestions posted by Michael as well, from
https://www.ietf.org/mail-archive/web/suit/current/msg00286.html)

* One or more optional mechanisms will be described that use existing
transport and discovery protocols to locate and transfer the firmware

* The requirements for secure firmware upgrade will be documented

* Define a general architecture the enables secure IoT firmware upgrade
describing involved elements, security threats

* An extensible data model that captures metadata and security properties
about the firmware will be developed and codified in a manifest.

* Define one or more encoding formats for the maifest

Minor Issues

 Below are some of the issues which have been raised on the mailing list
earlier and I haven=E2=80=99t heard consensus either in support or against =
them. I
feel these issues as unresolved and would love to hear input form the
chairs and the WG how do we proceed further.

1. Manifest Formats

The charter says

"A small number of formats is preferred to reduce the complexity of a
firmware management solution, where each IoT device would typically only
support one format, but the same tool or service might support all such
formats. "

It is not very clear from the charter what tool or service are being
referred to and its influence on the complexity or the number of
serialization formats to constitute as a restriction in the charter
deliverable. Would it be fine if the the charter just says one or more
serialization formats will be developed by the working group and then leave
it to the WG to decide the number and formats based on the use-cases.


2. Relationship to others

The charter says

"This group will aim to maintain a close relationship with silicon vendors
and OEMs that develop IoT operating systems."

I would like to reiterate that it is quite important that this WG maintain
relationships with the people who build and deploy the IOT devices as well.
Hannes had the following proposal (
https://www.ietf.org/mail-archive/web/suit/current/msg00249.html) and may
we use the same ?

"This group will aim to maintain a close relationship with silicon vendors
and OEMs that develop IoT operating systems. Additionally, the group will
reach out to companies who build and deploy IoT devices."


3. Permission Model involving multiple sources

I think the whole idea of multiple people signing is very unclear on the
requirements and its applicability or its widespread use. Most common
deployments today follow the model of single vendor signing. Would the WG
be open to start with a simple permission model (single vendor based) that
is readily applicable to majority of today deployments and possibly extend
it as necessary.

please let me know your thoughts

On Mon, Dec 4, 2017 at 1:36 PM, Waltermire, David A. (Fed) <
david.waltermire@nist.gov> wrote:

> Kathleen, Dave, and I met earlier today to discuss the charter and the wa=
y
> forward. This email includes updated charter text and milestones, and a
> brief description of the changes we have made based on the input from the
> mailing list.
>
> The following is updated charter text and milestones based on the mailing
> list conversation since the BoF. We are posting this text for review on t=
he
> SUIT mailing list for 1 week, ending on Monday, December 11th at 23:59 UT=
C.
> This review is a call for consensus on the full charter. Please indicate =
if
> you support this text or if you have any objections or blocking concerns =
on
> this text. Please provide comments including proposed text changes ASAP t=
o
> provide ample time for discussion.
>
> Kathleen will post updated text to the Datatracker at a future date once
> we get a sense of the mailing list discussion to follow. This will likely
> be before we have assessed consensus. We will update the Datatracker and
> post these updates to the list as needed per agreement on the list.
>
> -- start charter text ---
>
> Vulnerabilities in Internet of Things (IoT) devices have raised the need
> for a secure firmware update mechanism that is also suitable for
> constrained devices.  Security experts, researchers, and regulators
> recommend that all IoT devices be equipped with such a mechanism.  While
> there are many proprietary firmware update mechanisms in use today, there
> is a lack of a modern interoperable approach of securely updating the
> firmware in IoT devices. In June of 2016 the Internet Architecture Board
> organized a workshop on 'Internet of Things (IoT) Software Update (IOTSU)=
',
> and RFC 8240 documents various requirements and challenges that are
> specific to IoT devices.
>
> A firmware update solution consists of several components, including:
> * A mechanism to transport firmware images to compatible devices.
> * A manifest that provides meta-data about the firmware image (such as a
> firmware package identifier, the hardware the package needs to run, and
> dependencies on other firmware packages), as well as cryptographic
> information for protecting the firmware image in an end-to-end fashion.
> * The firmware image itself.
>
> This group will focus on defining a firmware update solution (taking into
> account past learnings from RFC 4108 and other firmware update solutions)
> that will be usable on Class 1 (as defined in RFC 7228) devices, i.e.,
> devices with ~10 KiB RAM and ~100 KiB flash.  The solution may apply to
> more capable devices as well.  This group will not define any new transpo=
rt
> or discovery mechanisms, but may describe how to use existing mechanisms
> within the architecture.
>
> In particular this group aims to publish several documents, namely:
> * An IoT firmware update architecture that includes a description of the
> involved entities, security threats, and assumptions.
> * One or more manifest format specifications.
>
> The initial focus of this group will be development of the information
> model for the contents of a manifest. Once there is general agreement on
> the contents, the group will pick a small number of serialization formats
> such as CBOR and/or ASN.1 (and their associated cryptographic mechanisms)
> to encode the manifest. A small number of formats is preferred to reduce
> the complexity of a firmware management solution, where each IoT device
> would typically only support one format, but the same tool or service mig=
ht
> support all such formats. To support a wide range of deployment scenarios=
,
> the formats are expected to be expressive enough to allow the use of
> different firmware sources and permission models.
>
> This group does not aim to create a standard for a generic application
> software update mechanism, but instead this group will focus on firmware
> development practices in the embedded industry. Software update solutions
> that target updating software other than the firmware binaries (e.g.,
> applications) are also out of scope.
>
> This group will aim to maintain a close relationship with silicon vendors
> and OEMs that develop IoT operating systems.
>
> -- end charter text ---
>
> -- start proposed milestones --
> Date         Milestone
> Nov 2018  Submit an initial manifest serialization format to the IESG for
> publication as a Proposed Standard.
> Jul 2018    Submit manifest information model to the IESG for publication
> as Informational.
> Jul 2018    Calendar item: Second interoperability event at IETF 102.
> Mar 2018 Calendar item: First interoperability event at IETF 101.
> Mar 2018 Adopt a manifest information model as a WG item.
> Mar 2018 Adopt initial manifest serialization format(s) as WG item(s).
> Jan 2018 Adopt "Architecture" document as WG item.
> -- end proposed milestones --
>
> The updated charter and milestones addresses the following concerns raise=
d
> on the mailing list:
> - The text around the IAB workshop on the Internet of Things (IoT)
> Software Update (IOTSU) has been minimized, with a single sentence left t=
o
> provide historical backgroud information.
> - Bulleted items in the second and fourth paragraphs are now indicated by
> an asterisk. The formatting is fixed.
> - Text about RFC 4108 has been further minimized, with only a reference t=
o
> RFC 4108 included as a source of past learnings on update solutions along
> with existing other work on firmware update solutions. This makes RFC 410=
8
> part of the larger body of work to consider as lessons-learned in this
> space.
> - Discussion of defining the use of existing transport or discovery
> mechanisms is now referenced to be described in the architecture.
> - The text on formats has been clarified to be more consistent with the
> discussions on the mailing list. The new text discusses the development o=
f
> a manifest information model that describes the manifest contents, and th=
e
> development of one or more manifest serialization formats and crypto
> mechanisms. The information model and serialization format split has also
> been reflected in the milestones. This leaves the actual document
> organization up to the WG, the milestones do not dictate that documents b=
e
> separated (or not separated).
> - The term "firmware" has been used where appropriate instead of
> "software" to better reflect the focus of the WG on firmware update
> mechanisms and to be consistent with the BoF meeting consensus. The
> milestones have been updated for more consistent use of terminology as we=
ll.
> - The last paragraph has been rewritten to avoid singling out a single OS
> or enumerating a larger list of OS's, and instead to focus on the
> difference between firmware and applications, as discussed at the BoF.
>
> Regards,
> Dave Waltermire and Dave Thaler
>
> _______________________________________________
> Suit mailing list
> Suit@ietf.org
> https://www.ietf.org/mailman/listinfo/suit
>

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<div dir=3D"ltr">Hello Chairs<div><br></div><div><br></div><div><span id=3D=
"gmail-docs-internal-guid-c6f9941b-50e5-f91a-e14f-a6c23d3df336"><p dir=3D"l=
tr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style=
=3D"font-size:11pt;font-family:Arial;background-color:transparent;font-vari=
ant-numeric:normal;font-variant-east-asian:normal;vertical-align:baseline;w=
hite-space:pre-wrap">Thanks chairs for sharing the updated charter. My apol=
ogies for delay in responding. I totally lost track of the deadline (my bad=
)</span></p><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-=
bottom:0pt"><span style=3D"font-size:11pt;font-family:Arial;background-colo=
r:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;ve=
rtical-align:baseline;white-space:pre-wrap"> Here are few concerns regardin=
g the current charter text and would greatly appreciate if these can be dis=
cussed or taken into consideration by the chairs and the WG. </span></p><br=
><br><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:=
0pt"><span style=3D"font-size:11pt;font-family:Arial;background-color:trans=
parent;font-variant-numeric:normal;font-variant-east-asian:normal;vertical-=
align:baseline;white-space:pre-wrap">Major Issue:</span></p><br><p dir=3D"l=
tr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style=
=3D"font-size:11pt;font-family:Arial;background-color:transparent;font-vari=
ant-numeric:normal;font-variant-east-asian:normal;vertical-align:baseline;w=
hite-space:pre-wrap">Firmware update service discovery and mechanisms to do=
wnload the firmware</span></p><br><p dir=3D"ltr" style=3D"line-height:1.38;=
margin-top:0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;font-family=
:Arial;background-color:transparent;font-variant-numeric:normal;font-varian=
t-east-asian:normal;vertical-align:baseline;white-space:pre-wrap">The curre=
nt charter says </span></p><p dir=3D"ltr" style=3D"line-height:1.38;margin-=
top:0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;font-family:Arial;=
background-color:transparent;font-variant-numeric:normal;font-variant-east-=
asian:normal;vertical-align:baseline;white-space:pre-wrap">&quot;</span></p=
><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:0pt;=
background-color:rgb(255,253,245)"><span style=3D"font-size:11pt;font-famil=
y:Arial;color:rgb(0,0,0);background-color:transparent;font-variant-numeric:=
normal;font-variant-east-asian:normal;vertical-align:baseline;white-space:p=
re-wrap"> This group will not define any new transport or discovery mechani=
sms,</span></p><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;marg=
in-bottom:0pt;background-color:rgb(255,253,245)"><span style=3D"font-size:1=
1pt;font-family:Arial;color:rgb(0,0,0);background-color:transparent;font-va=
riant-numeric:normal;font-variant-east-asian:normal;vertical-align:baseline=
;white-space:pre-wrap">but may describe how to use existing mechanisms with=
in the architecture</span></p><p dir=3D"ltr" style=3D"line-height:1.38;marg=
in-top:0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;font-family:Ari=
al;background-color:transparent;font-variant-numeric:normal;font-variant-ea=
st-asian:normal;vertical-align:baseline;white-space:pre-wrap">&quot;</span>=
</p><br><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bott=
om:0pt"><span style=3D"font-size:11pt;font-family:Arial;background-color:tr=
ansparent;font-variant-numeric:normal;font-variant-east-asian:normal;vertic=
al-align:baseline;white-space:pre-wrap">Couple of points of concerns</span>=
</p><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:0=
pt"><span style=3D"font-size:11pt;font-family:Arial;background-color:transp=
arent;font-variant-numeric:normal;font-variant-east-asian:normal;vertical-a=
lign:baseline;white-space:pre-wrap">1. From my recollection of BOF discussi=
ons, there was support to charter work to discover the firmware server, the=
 manifest and using existing mechanisms to download the firmware image.</sp=
an></p><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-botto=
m:0pt"><span style=3D"font-size:11pt;font-family:Arial;background-color:tra=
nsparent;font-variant-numeric:normal;font-variant-east-asian:normal;vertica=
l-align:baseline;white-space:pre-wrap">2. The strength of &quot;may&quot; i=
n the current charter text and lacking explicit deliverable for this, makes=
 one conclude such a work by the WG is optional.</span></p><br><p dir=3D"lt=
r" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style=
=3D"font-size:11pt;font-family:Arial;background-color:transparent;font-vari=
ant-numeric:normal;font-variant-east-asian:normal;vertical-align:baseline;w=
hite-space:pre-wrap">There are several deployments where the IoT device ope=
rating under restricted network access cannot reach out to the manufacturer=
&#39;s/OEM&#39;s website to download the firmware. Often one does not want =
to have a device with unpatched firmware using the open internet to contact=
 the vendor&#39;s website to get a firmware update and instead a local firm=
ware server is used to cache the firmware.=C2=A0 One can expect to have loc=
al firmware server managed by the enterprise/factory to serve the firmware.=
</span></p><p dir=3D"ltr" style=3D"line-height:1.656;margin-top:0pt;margin-=
bottom:0pt"><span style=3D"font-size:11pt;font-family:Arial;background-colo=
r:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;ve=
rtical-align:baseline;white-space:pre-wrap">Having charter make explicit pr=
ovision for discovering such local server &amp; locate the manifest (and fi=
rmware) on that server at a well-known location, as a WG deliverable, will =
be super beneficial and  helps in a great deal towards building interoperab=
le solution.</span></p><br><p dir=3D"ltr" style=3D"line-height:1.656;margin=
-top:0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;font-family:Arial=
;background-color:transparent;font-variant-numeric:normal;font-variant-east=
-asian:normal;vertical-align:baseline;white-space:pre-wrap">To that extent,=
 may i propose splitting the WG deliverables as below ( including some text=
 suggestions posted by Michael as well, from <a href=3D"https://www.ietf.or=
g/mail-archive/web/suit/current/msg00286.html">https://www.ietf.org/mail-ar=
chive/web/suit/current/msg00286.html</a>)</span></p><p dir=3D"ltr" style=3D=
"line-height:1.656;margin-top:0pt;margin-bottom:0pt"><span style=3D"font-si=
ze:11pt;font-family:Arial;background-color:transparent;font-variant-numeric=
:normal;font-variant-east-asian:normal;vertical-align:baseline;white-space:=
pre-wrap">* One or more optional mechanisms will be described that use exis=
ting transport and discovery protocols to locate and transfer the firmware<=
/span></p><p dir=3D"ltr" style=3D"line-height:1.656;margin-top:0pt;margin-b=
ottom:0pt"><span style=3D"font-size:11pt;font-family:Arial;background-color=
:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;ver=
tical-align:baseline;white-space:pre-wrap">* The requirements for secure fi=
rmware upgrade will be documented</span></p><p dir=3D"ltr" style=3D"line-he=
ight:1.656;margin-top:0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;=
font-family:Arial;background-color:transparent;font-variant-numeric:normal;=
font-variant-east-asian:normal;vertical-align:baseline;white-space:pre-wrap=
">* Define a general architecture the enables secure IoT firmware upgrade d=
escribing involved elements, security threats</span></p><p dir=3D"ltr" styl=
e=3D"line-height:1.656;margin-top:0pt;margin-bottom:0pt"><span style=3D"fon=
t-size:11pt;font-family:Arial;background-color:transparent;font-variant-num=
eric:normal;font-variant-east-asian:normal;vertical-align:baseline;white-sp=
ace:pre-wrap">* An extensible data model that captures metadata and securit=
y properties about the firmware will be developed and codified in a manifes=
t.</span></p><p dir=3D"ltr" style=3D"line-height:1.656;margin-top:0pt;margi=
n-bottom:0pt"><span style=3D"font-size:11pt;font-family:Arial;background-co=
lor:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;=
vertical-align:baseline;white-space:pre-wrap">* Define one or more encoding=
 formats for the maifest</span></p><br><p dir=3D"ltr" style=3D"line-height:=
1.38;margin-top:0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;font-f=
amily:Arial;background-color:transparent;font-variant-numeric:normal;font-v=
ariant-east-asian:normal;vertical-align:baseline;white-space:pre-wrap">Mino=
r Issues</span></p><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;=
margin-bottom:0pt"><span style=3D"font-size:11pt;font-family:Arial;backgrou=
nd-color:transparent;font-variant-numeric:normal;font-variant-east-asian:no=
rmal;vertical-align:baseline;white-space:pre-wrap"> =C2=A0Below are some of=
 the issues which have been raised on the mailing list earlier and I haven=
=E2=80=99t heard consensus either in support or against them. I feel these =
issues as unresolved and would love to hear input form the chairs and the W=
G how do we proceed further.</span></p><br><p dir=3D"ltr" style=3D"line-hei=
ght:1.38;margin-top:0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;fo=
nt-family:Arial;background-color:transparent;font-variant-numeric:normal;fo=
nt-variant-east-asian:normal;vertical-align:baseline;white-space:pre-wrap">=
1. Manifest Formats</span></p><br><p dir=3D"ltr" style=3D"line-height:1.38;=
margin-top:0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;font-family=
:Arial;background-color:transparent;font-variant-numeric:normal;font-varian=
t-east-asian:normal;vertical-align:baseline;white-space:pre-wrap">The chart=
er says</span></p><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;m=
argin-bottom:0pt"><span style=3D"font-size:11pt;font-family:Arial;backgroun=
d-color:transparent;font-variant-numeric:normal;font-variant-east-asian:nor=
mal;vertical-align:baseline;white-space:pre-wrap">&quot;</span><span style=
=3D"font-size:11.5pt;font-family:&quot;Times New Roman&quot;;background-col=
or:transparent;font-variant-numeric:normal;font-variant-east-asian:normal;v=
ertical-align:baseline;white-space:pre-wrap">A small number of formats is p=
referred to reduce the complexity of a firmware management solution, where =
each IoT device would typically only support one format, but the same tool =
or service might support all such formats. &quot;</span></p><br><p dir=3D"l=
tr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style=
=3D"font-size:11pt;font-family:Arial;background-color:transparent;font-vari=
ant-numeric:normal;font-variant-east-asian:normal;vertical-align:baseline;w=
hite-space:pre-wrap">It is not very clear from the charter what tool or ser=
vice are being referred to and its influence  on the complexity or the numb=
er of serialization formats to constitute as a restriction in the charter d=
eliverable. Would it be fine if the the charter just says one or more seria=
lization formats will be developed by the working group and then leave it t=
o the WG to decide the number and formats based on the use-cases.</span></p=
><br><br><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bot=
tom:0pt"><span style=3D"font-size:11pt;font-family:Arial;background-color:t=
ransparent;font-variant-numeric:normal;font-variant-east-asian:normal;verti=
cal-align:baseline;white-space:pre-wrap">2. Relationship to others</span></=
p><br><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom=
:0pt"><span style=3D"font-size:11pt;font-family:Arial;background-color:tran=
sparent;font-variant-numeric:normal;font-variant-east-asian:normal;vertical=
-align:baseline;white-space:pre-wrap">The charter says</span></p><p dir=3D"=
ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span styl=
e=3D"font-size:11pt;font-family:Arial;background-color:transparent;font-var=
iant-numeric:normal;font-variant-east-asian:normal;vertical-align:baseline;=
white-space:pre-wrap">&quot;</span><span style=3D"font-size:11.5pt;font-fam=
ily:&quot;Times New Roman&quot;;background-color:transparent;font-variant-n=
umeric:normal;font-variant-east-asian:normal;vertical-align:baseline;white-=
space:pre-wrap">This group will aim to maintain a close relationship with s=
ilicon vendors and OEMs that develop IoT operating systems.&quot;</span></p=
><br><p dir=3D"ltr" style=3D"line-height:1.38;margin-top:0pt;margin-bottom:=
0pt"><span style=3D"font-size:11pt;font-family:Arial;background-color:trans=
parent;font-variant-numeric:normal;font-variant-east-asian:normal;vertical-=
align:baseline;white-space:pre-wrap">I would like to reiterate that it is q=
uite important that this WG maintain relationships with the people who buil=
d and deploy the IOT devices as well. Hannes had the following proposal (<a=
 href=3D"https://www.ietf.org/mail-archive/web/suit/current/msg00249.html">=
https://www.ietf.org/mail-archive/web/suit/current/msg00249.html</a>) and m=
ay we use the same ?</span></p><br><p dir=3D"ltr" style=3D"line-height:1.38=
;margin-top:0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;font-famil=
y:Calibri;color:rgb(31,73,125);background-color:transparent;font-variant-nu=
meric:normal;font-variant-east-asian:normal;vertical-align:baseline;white-s=
pace:pre-wrap">&quot;This group will aim to maintain a close relationship w=
ith silicon vendors and OEMs that develop IoT operating systems. Additional=
ly, the group will reach out to companies who build and deploy IoT devices.=
&quot;</span></p><br><br><p dir=3D"ltr" style=3D"line-height:1.38;margin-to=
p:0pt;margin-bottom:0pt"><span style=3D"font-size:11pt;font-family:Arial;ba=
ckground-color:transparent;font-variant-numeric:normal;font-variant-east-as=
ian:normal;vertical-align:baseline;white-space:pre-wrap">3. Permission Mode=
l involving multiple sources</span></p><br><p dir=3D"ltr" style=3D"line-hei=
ght:1.38;margin-top:0pt;margin-bottom:0pt"><span style=3D"font-size:11.5pt;=
font-family:Arial;background-color:transparent;font-variant-numeric:normal;=
font-variant-east-asian:normal;vertical-align:baseline;white-space:pre-wrap=
">I think the whole idea of multiple people signing is very unclear on the =
requirements and its applicability or its widespread use. Most common deplo=
yments today follow the model of single vendor signing. Would the WG be ope=
n to start with a simple permission model (single vendor based) that is rea=
dily applicable to majority of today deployments and possibly extend it as =
necessary.</span></p><div><span style=3D"font-size:11.5pt;font-family:Arial=
;background-color:transparent;font-variant-numeric:normal;font-variant-east=
-asian:normal;vertical-align:baseline;white-space:pre-wrap"><br></span></di=
v><div><span style=3D"font-size:11.5pt;font-family:Arial;background-color:t=
ransparent;font-variant-numeric:normal;font-variant-east-asian:normal;verti=
cal-align:baseline;white-space:pre-wrap">please let me know your thoughts</=
span></div></span></div></div><div class=3D"gmail_extra"><br><div class=3D"=
gmail_quote">On Mon, Dec 4, 2017 at 1:36 PM, Waltermire, David A. (Fed) <sp=
an dir=3D"ltr">&lt;<a href=3D"mailto:david.waltermire@nist.gov" target=3D"_=
blank">david.waltermire@nist.gov</a>&gt;</span> wrote:<br><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">Kathleen, Dave, and I met earlier today to discuss the charte=
r and the way forward. This email includes updated charter text and milesto=
nes, and a brief description of the changes we have made based on the input=
 from the mailing list.<br>
<br>
The following is updated charter text and milestones based on the mailing l=
ist conversation since the BoF. We are posting this text for review on the =
SUIT mailing list for 1 week, ending on Monday, December 11th at 23:59 UTC.=
 This review is a call for consensus on the full charter. Please indicate i=
f you support this text or if you have any objections or blocking concerns =
on this text. Please provide comments including proposed text changes ASAP =
to provide ample time for discussion.<br>
<br>
Kathleen will post updated text to the Datatracker at a future date once we=
 get a sense of the mailing list discussion to follow. This will likely be =
before we have assessed consensus. We will update the Datatracker and post =
these updates to the list as needed per agreement on the list.<br>
<br>
-- start charter text ---<br>
<br>
Vulnerabilities in Internet of Things (IoT) devices have raised the need fo=
r a secure firmware update mechanism that is also suitable for constrained =
devices.=C2=A0 Security experts, researchers, and regulators recommend that=
 all IoT devices be equipped with such a mechanism.=C2=A0 While there are m=
any proprietary firmware update mechanisms in use today, there is a lack of=
 a modern interoperable approach of securely updating the firmware in IoT d=
evices. In June of 2016 the Internet Architecture Board organized a worksho=
p on &#39;Internet of Things (IoT) Software Update (IOTSU)&#39;, and RFC 82=
40 documents various requirements and challenges that are specific to IoT d=
evices.<br>
<br>
A firmware update solution consists of several components, including:<br>
* A mechanism to transport firmware images to compatible devices.<br>
* A manifest that provides meta-data about the firmware image (such as a fi=
rmware package identifier, the hardware the package needs to run, and depen=
dencies on other firmware packages), as well as cryptographic information f=
or protecting the firmware image in an end-to-end fashion.<br>
* The firmware image itself.<br>
<br>
This group will focus on defining a firmware update solution (taking into a=
ccount past learnings from RFC 4108 and other firmware update solutions) th=
at will be usable on Class 1 (as defined in RFC 7228) devices, i.e., device=
s with ~10 KiB RAM and ~100 KiB flash.=C2=A0 The solution may apply to more=
 capable devices as well.=C2=A0 This group will not define any new transpor=
t or discovery mechanisms, but may describe how to use existing mechanisms =
within the architecture.<br>
<br>
In particular this group aims to publish several documents, namely:<br>
* An IoT firmware update architecture that includes a description of the in=
volved entities, security threats, and assumptions.<br>
* One or more manifest format specifications.<br>
<br>
The initial focus of this group will be development of the information mode=
l for the contents of a manifest. Once there is general agreement on the co=
ntents, the group will pick a small number of serialization formats such as=
 CBOR and/or ASN.1 (and their associated cryptographic mechanisms) to encod=
e the manifest. A small number of formats is preferred to reduce the comple=
xity of a firmware management solution, where each IoT device would typical=
ly only support one format, but the same tool or service might support all =
such formats. To support a wide range of deployment scenarios, the formats =
are expected to be expressive enough to allow the use of different firmware=
 sources and permission models.<br>
<br>
This group does not aim to create a standard for a generic application soft=
ware update mechanism, but instead this group will focus on firmware develo=
pment practices in the embedded industry. Software update solutions that ta=
rget updating software other than the firmware binaries (e.g., applications=
) are also out of scope.<br>
<br>
This group will aim to maintain a close relationship with silicon vendors a=
nd OEMs that develop IoT operating systems.<br>
<br>
-- end charter text ---<br>
<br>
-- start proposed milestones --<br>
Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Milestone<br>
Nov 2018=C2=A0 Submit an initial manifest serialization format to the IESG =
for publication as a Proposed Standard.<br>
Jul 2018=C2=A0 =C2=A0 Submit manifest information model to the IESG for pub=
lication as Informational.<br>
Jul 2018=C2=A0 =C2=A0 Calendar item: Second interoperability event at IETF =
102.<br>
Mar 2018 Calendar item: First interoperability event at IETF 101.<br>
Mar 2018 Adopt a manifest information model as a WG item.<br>
Mar 2018 Adopt initial manifest serialization format(s) as WG item(s).<br>
Jan 2018 Adopt &quot;Architecture&quot; document as WG item.<br>
-- end proposed milestones --<br>
<br>
The updated charter and milestones addresses the following concerns raised =
on the mailing list:<br>
- The text around the IAB workshop on the Internet of Things (IoT) Software=
 Update (IOTSU) has been minimized, with a single sentence left to provide =
historical backgroud information.<br>
- Bulleted items in the second and fourth paragraphs are now indicated by a=
n asterisk. The formatting is fixed.<br>
- Text about RFC 4108 has been further minimized, with only a reference to =
RFC 4108 included as a source of past learnings on update solutions along w=
ith existing other work on firmware update solutions. This makes RFC 4108 p=
art of the larger body of work to consider as lessons-learned in this space=
.<br>
- Discussion of defining the use of existing transport or discovery mechani=
sms is now referenced to be described in the architecture.<br>
- The text on formats has been clarified to be more consistent with the dis=
cussions on the mailing list. The new text discusses the development of a m=
anifest information model that describes the manifest contents, and the dev=
elopment of one or more manifest serialization formats and crypto mechanism=
s. The information model and serialization format split has also been refle=
cted in the milestones. This leaves the actual document organization up to =
the WG, the milestones do not dictate that documents be separated (or not s=
eparated).<br>
- The term &quot;firmware&quot; has been used where appropriate instead of =
&quot;software&quot; to better reflect the focus of the WG on firmware upda=
te mechanisms and to be consistent with the BoF meeting consensus. The mile=
stones have been updated for more consistent use of terminology as well.<br=
>
- The last paragraph has been rewritten to avoid singling out a single OS o=
r enumerating a larger list of OS&#39;s, and instead to focus on the differ=
ence between firmware and applications, as discussed at the BoF.<br>
<br>
Regards,<br>
Dave Waltermire and Dave Thaler<br>
<br>
______________________________<wbr>_________________<br>
Suit mailing list<br>
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<a href=3D"https://www.ietf.org/mailman/listinfo/suit" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/suit</a><br>
</blockquote></div><br></div>

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Thread-Topic: [Suit] Updated Charter Text and Way Forward
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--_000_CY4PR09MB14956C29AF295B5E09A72040F0350CY4PR09MB1495namp_--


From nobody Wed Dec 13 12:29:58 2017
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----------------------------------------------------------------------
COMMENT:
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The new version addresses the points I raised in the last round. Thanks!



From nobody Wed Dec 13 16:32:51 2017
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COMMENT:
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Adamâ€™s comment about line breaks is still true in this version.



From nobody Wed Dec 13 18:07:27 2017
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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
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On Wed, Dec 13, 2017 at 7:32 PM, Ben Campbell <ben@nostrum.com> wrote:
> Ben Campbell has entered the following ballot position for
> charter-ietf-suit-00-09: Yes
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> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>
> Adam=E2=80=99s comment about line breaks is still true in this version.

Yes, I'm going to ask the secretariat for help.  Something funny is
happening that I haven't been able to correct and don't want to
generate a bunch of new versions in the process.  Thanks!

>
>
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--=20

Best regards,
Kathleen


From nobody Thu Dec 14 06:56:12 2017
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----------------------------------------------------------------------
COMMENT:
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I don't understand why the charter wants to focus on specific serialization
formats.

"The initial focus of this group will be development of the information model
for the contents of a manifest. Once there is general agreement on the
contents, the group will pick a small number of serialization formats such as
CBOR and/or ASN.1 (and their associated cryptographic mechanisms) to encode the
manifest."

Because it's IoT and it has to be efficient?
In the end, you care about a data model [RFC3444] as opposed to a information
model [RFC3444], from which you can automate your serialization formats.
Actually, the serialization of the day... Btw, This doesn't prevent to specify
a default for interoperability.

I'll trust the responsible AD on that matter.



From nobody Thu Dec 14 07:07:53 2017
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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Date: Thu, 14 Dec 2017 10:06:51 -0500
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To: Benoit Claise <bclaise@cisco.com>
Cc: The IESG <iesg@ietf.org>, suit-chairs@ietf.org, suit@ietf.org
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Subject: Re: [Suit] Benoit Claise's No Objection on charter-ietf-suit-00-09: (with COMMENT)
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Benoit,

On Thu, Dec 14, 2017 at 9:56 AM, Benoit Claise <bclaise@cisco.com> wrote:
> Benoit Claise has entered the following ballot position for
> charter-ietf-suit-00-09: 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 don't understand why the charter wants to focus on specific serialization
> formats.
>
> "The initial focus of this group will be development of the information model
> for the contents of a manifest. Once there is general agreement on the
> contents, the group will pick a small number of serialization formats such as
> CBOR and/or ASN.1 (and their associated cryptographic mechanisms) to encode the
> manifest."
>
> Because it's IoT and it has to be efficient?
> In the end, you care about a data model [RFC3444] as opposed to a information
> model [RFC3444], from which you can automate your serialization formats.
> Actually, the serialization of the day... Btw, This doesn't prevent to specify
> a default for interoperability.

Thanks for your comments.  The additional language for serialization
formats, data model, and information model was the outcome from the
BoF and recent list discussion.  Hence, the language tried to clarify
the discussion and open up the options for this.  The result is just
what you are saying, the WG will be open to what's needed and no
decision has been made in the charter.  I believe the charter lines up
with your request and that's how the chairs see it.  We'll keep your
comments in mind and appreciate your review.

Thank you.

>
> I'll trust the responsible AD on that matter.
>
>



-- 

Best regards,
Kathleen


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Subject: [Suit] WG Action: Formed Software Updates for Internet of Things (suit)
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A new IETF WG has been formed in the Security Area. For additional
information, please contact the Area Directors or the WG Chairs.

Software Updates for Internet of Things (suit)
-----------------------------------------------------------------------
Current status: Active WG

Chairs:
  Dave Thaler <dthaler@microsoft.com>
  David Waltermire <david.waltermire@nist.gov>
  Russ Housley <housley@vigilsec.com>

Assigned Area Director:
  Kathleen Moriarty <Kathleen.Moriarty.ietf@gmail.com>

Security Area Directors:
  Kathleen Moriarty <Kathleen.Moriarty.ietf@gmail.com>
  Eric Rescorla <ekr@rtfm.com>

Mailing list:
  Address: suit@ietf.org
  To subscribe: https://www.ietf.org/mailman/listinfo/suit
  Archive: https://mailarchive.ietf.org/arch/search/?email_list=suit

Group page: https://datatracker.ietf.org/group/suit/

Charter: https://datatracker.ietf.org/doc/charter-ietf-suit/

Vulnerabilities in Internet of Things (IoT) devices have raised the need
for a secure firmware update mechanism that is also suitable for constrained
devices.  Security experts, researchers, and regulators recommend that all IoT
devices be equipped with such a mechanism.  While there are many proprietary
firmware update mechanisms in use today, there is no modern interoperable
approach allowing secure updates to firmware in IoT devices. In June of 2016
the Internet Architecture Board organized a workshop on 'Internet
of Things (IoT) Software Update (IOTSU)', and RFC 8240 documents various
requirements and challenges that are specific to IoT devices.

A firmware update solution consists of several components, including:
* A mechanism to transport firmware images to compatible devices.
* A manifest that provides meta-data about the firmware image (such as a
firmware package identifier, the hardware the package needs to run, and
dependencies on other firmware packages), as well as cryptographic information
for protecting the firmware image in an end-to-end fashion.
* The firmware image itself.

This group will focus on defining a firmware update solution (taking into
account past learnings from RFC 4108 and other firmware update solutions) that
will be usable on Class 1 (as defined in RFC 7228) devices, i.e., devices with
~10 KiB RAM and ~100 KiB flash.  The solution may apply to more capable
devices as well.  This group will not define any new transport or discovery
mechanisms, but may describe how to use existing mechanisms within the
architecture.

In particular this group aims to publish several documents, namely:
* An IoT firmware update architecture that includes a description of the
involved entities, security threats, and assumptions.
* One or more manifest format specifications.

To support specification of manifest format(s), this group will first develop
the information model for the contents of a manifest. Once there is general
agreement on the contents, the group will pick a small number of
serialization formats such as CBOR and/or ASN.1 (and their associated
cryptographic mechanisms) to encode the manifest. A small number of formats
is preferred to reduce the complexity of a firmware management solution,
where each IoT device would typically only support one format, but the same
tool or service might support all such formats. To support a wide range of
deployment scenarios, the formats are expected to be expressive enough to
allow the use of different firmware sources and permission models.

This group does not aim to create a standard for a generic application
software update mechanism, but instead this group will focus on firmware
development practices in the embedded industry. Software update solutions
that target updating software other than the firmware binaries (e.g.,
applications) are also out of scope.

This group will aim to maintain a close relationship with silicon vendors and
OEMs that develop IoT operating systems.

Milestones:

  Jan 2018 - Adopt "Architecture" document as WG item.

  Mar 2018 - Adopt a manifest information model as a WG item.

  Mar 2018 - Calendar item: First interoperability event at IETF 101.

  Mar 2018 - Adopt initial manifest serialization format(s) as WG item(s).

  Jul 2018 - Calendar item: Second interoperability event at IETF 102.

  Jul 2018 - Submit manifest information model to the IESG for publication as
  Informational.

  Nov 2018 - Submit an initial manifest serialization format to the IESG for
  publication as a Proposed Standard.



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From: "Waltermire, David A. (Fed)" <david.waltermire@nist.gov>
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Subject: Re: [Suit] WG Action: Formed Software Updates for Internet of Things (suit)
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: "Waltermire, David A. (Fed)" <david.waltermire@nist.gov>, "suit@ietf.org" <suit@ietf.org>
Thread-Topic: WG Action: Formed Software Updates for Internet of Things (suit)
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/OBIsMQKmvcMaOwnU_wiYRQpY0yI>
Subject: Re: [Suit] WG Action: Formed Software Updates for Internet of Things (suit)
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That's great news. Thanks for the chairs and the AD for their work!

-----Original Message-----
From: Suit [mailto:suit-bounces@ietf.org] On Behalf Of Waltermire, David A.=
 (Fed)
Sent: 15 December 2017 19:03
To: suit@ietf.org
Subject: Re: [Suit] WG Action: Formed Software Updates for Internet of Thin=
gs (suit)

Congratulations to the WG! Thanks to everyone who helped get us to this poi=
nt. Special thanks to Kathleen for all her help!

Regards,
Dave

> -----Original Message-----
> From: The IESG [mailto:iesg-secretary@ietf.org]
> Sent: Friday, December 15, 2017 1:00 PM
> To: IETF-Announce <ietf-announce@ietf.org>
> Cc: The IESG <iesg@ietf.org>; suit-chairs@ietf.org; suit@ietf.org
> Subject: WG Action: Formed Software Updates for Internet of Things
> (suit)
>
> A new IETF WG has been formed in the Security Area. For additional
> information, please contact the Area Directors or the WG Chairs.
>
> Software Updates for Internet of Things (suit)
> ----------------------------------------------------------------------
> -
> Current status: Active WG
>
> Chairs:
>   Dave Thaler <dthaler@microsoft.com>
>   David Waltermire <david.waltermire@nist.gov>
>   Russ Housley <housley@vigilsec.com>
>
> Assigned Area Director:
>   Kathleen Moriarty <Kathleen.Moriarty.ietf@gmail.com>
>
> Security Area Directors:
>   Kathleen Moriarty <Kathleen.Moriarty.ietf@gmail.com>
>   Eric Rescorla <ekr@rtfm.com>
>
> Mailing list:
>   Address: suit@ietf.org
>   To subscribe:
> https://na01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fwww.i
> et
> f.org%2Fmailman%2Flistinfo%2Fsuit&data=3D02%7C01%7Cdavid.waltermire%40
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> rac
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> Charter:
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>
> Vulnerabilities in Internet of Things (IoT) devices have raised the
> need for a secure firmware update mechanism that is also suitable for con=
strained devices.
> Security experts, researchers, and regulators recommend that all IoT
> devices be equipped with such a mechanism.  While there are many
> proprietary firmware update mechanisms in use today, there is no
> modern interoperable approach allowing secure updates to firmware in
> IoT devices. In June of 2016 the Internet Architecture Board organized
> a workshop on 'Internet of Things (IoT) Software Update (IOTSU)', and
> RFC 8240 documents various requirements and challenges that are specific =
to IoT devices.
>
> A firmware update solution consists of several components, including:
> * A mechanism to transport firmware images to compatible devices.
> * A manifest that provides meta-data about the firmware image (such as
> a firmware package identifier, the hardware the package needs to run,
> and dependencies on other firmware packages), as well as cryptographic
> information for protecting the firmware image in an end-to-end fashion.
> * The firmware image itself.
>
> This group will focus on defining a firmware update solution (taking
> into account past learnings from RFC 4108 and other firmware update
> solutions) that will be usable on Class 1 (as defined in RFC 7228)
> devices, i.e., devices with
> ~10 KiB RAM and ~100 KiB flash.  The solution may apply to more
> capable devices as well.  This group will not define any new transport
> or discovery mechanisms, but may describe how to use existing
> mechanisms within the architecture.
>
> In particular this group aims to publish several documents, namely:
> * An IoT firmware update architecture that includes a description of
> the involved entities, security threats, and assumptions.
> * One or more manifest format specifications.
>
> To support specification of manifest format(s), this group will first
> develop the information model for the contents of a manifest. Once
> there is general agreement on the contents, the group will pick a
> small number of serialization formats such as CBOR and/or ASN.1 (and
> their associated cryptographic
> mechanisms) to encode the manifest. A small number of formats is
> preferred to reduce the complexity of a firmware management solution,
> where each IoT device would typically only support one format, but the
> same tool or service might support all such formats. To support a wide
> range of deployment scenarios, the formats are expected to be
> expressive enough to allow the use of different firmware sources and perm=
ission models.
>
> This group does not aim to create a standard for a generic application
> software update mechanism, but instead this group will focus on
> firmware development practices in the embedded industry. Software
> update solutions that target updating software other than the firmware
> binaries (e.g.,
> applications) are also out of scope.
>
> This group will aim to maintain a close relationship with silicon
> vendors and OEMs that develop IoT operating systems.
>
> Milestones:
>
>   Jan 2018 - Adopt "Architecture" document as WG item.
>
>   Mar 2018 - Adopt a manifest information model as a WG item.
>
>   Mar 2018 - Calendar item: First interoperability event at IETF 101.
>
>   Mar 2018 - Adopt initial manifest serialization format(s) as WG item(s)=
.
>
>   Jul 2018 - Calendar item: Second interoperability event at IETF 102.
>
>   Jul 2018 - Submit manifest information model to the IESG for publicatio=
n as
>   Informational.
>
>   Nov 2018 - Submit an initial manifest serialization format to the IESG =
for
>   publication as a Proposed Standard.
>

_______________________________________________
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Suit@ietf.org
https://www.ietf.org/mailman/listinfo/suit
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any medium. Thank you.


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From: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Date: Tue, 19 Dec 2017 13:06:24 -0500
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Subject: [Suit] SUIT WG chairs
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Hello,

To help SUIT get started quickly and smoothly, we will maintain the 3
chairs from the BoF work who have agreed to stay on for the WG.  A big
thanks to all those that volunteered and to our chairs who helped move
this quickly to a WG to get the work started.

Russ Housley
Dave Thaler
Dave Waltermire

I look forward to seeing lots of progress.  Happy holidays!

-- 

Best regards,
Kathleen


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Subject: [Suit] suit - New Meeting Session Request for IETF 101
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A new meeting session request has just been submitted by Russ Housley, a Chair of the suit working group.


---------------------------------------------------------
Working Group Name: Software Updates for Internet of Things
Area Name: Security Area
Session Requester: Russ Housley

Number of Sessions: 1
Length of Session(s):  2 Hours
Number of Attendees: 100
Conflicts to Avoid: 
 First Priority: ipwave lamps stir ipsecme tls sipbrandy curdle dispatch sacm mile  teep core ace
 Second Priority: t2trg lwig 6lo cfrg saag acme perc cbor
 Third Priority: tcpinc v6ops 6man intarea


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

Resources Requested:

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

