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From: Dapeng Liu <maxpassion@gmail.com>
Date: Thu, 09 Feb 2017 06:02:32 +0000
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Subject: [Teep] TEEP BoF
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Hello all,



Hannes and I would like to draw your attention to a BOF we would like to
hold at the next IETF meeting and want to provide a bit background and
motivation of what we are trying to accomplish.



Several companies have been working on an application layer security
protocol that allows to configure security credentials and software running
on a Trusted Execution Environment (TEE). Today, TEEs are, for example,
found home routers, set-top boxes, smart phones, tablets, wearables, etc.
Unfortunately, there have been mostly proprietary protocols used in this
environment.



With this BOF we are making an attempt to standardize such a protocol. An
strawman proposal of such a protocol has been published with
https://tools.ietf.org/html/draft-pei-opentrustprotocol-03. This should
give you an idea what this is about.



In the BOF we would like to do the following:

 * Explain TEEs, the problem we are trying to solve, and a bit of history

 * Walk through some use cases

 * Talk about the architecture

 * Point to one possible solution



In the end we would like to find out what the level of interest from the
folks in the IETF to work on such a solution.




Thanks,

Dapeng&Hannes

--001a113d1268bd3c1d054812bafc
Content-Type: text/html; charset=UTF-8
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<div dir=3D"ltr"><p class=3D"MsoNormal" style=3D"margin:0cm 0cm 0pt;font-si=
ze:11pt;font-family:calibri,sans-serif">Hello all, =C2=A0</p><p class=3D"Ms=
oNormal" style=3D"margin:0cm 0cm 0pt;font-size:11pt;font-family:calibri,san=
s-serif">=C2=A0</p><p class=3D"MsoNormal" style=3D"margin:0cm 0cm 0pt;font-=
size:11pt;font-family:calibri,sans-serif">Hannes and I would like to draw y=
our attention to a BOF we would like to hold at the next IETF meeting and w=
ant to provide a bit background and motivation of what we are trying to acc=
omplish.</p><p class=3D"MsoNormal" style=3D"margin:0cm 0cm 0pt;font-size:11=
pt;font-family:calibri,sans-serif">=C2=A0</p><p class=3D"MsoNormal" style=
=3D"margin:0cm 0cm 0pt;font-size:11pt;font-family:calibri,sans-serif">Sever=
al companies have been working on an application layer security protocol th=
at allows to configure security credentials and software running on a Trust=
ed Execution Environment (TEE). Today, TEEs are, for example, found home ro=
uters, set-top boxes, smart phones, tablets, wearables, etc. Unfortunately,=
 there have been mostly proprietary protocols used in this environment.</p>=
<p class=3D"MsoNormal" style=3D"margin:0cm 0cm 0pt;font-size:11pt;font-fami=
ly:calibri,sans-serif">=C2=A0</p><p class=3D"MsoNormal" style=3D"margin:0cm=
 0cm 0pt;font-size:11pt;font-family:calibri,sans-serif">With this BOF we ar=
e making an attempt to standardize such a protocol. An strawman proposal of=
 such a protocol has been published with<span class=3D"inbox-inbox-Apple-co=
nverted-space">=C2=A0</span><a href=3D"https://tools.ietf.org/html/draft-pe=
i-opentrustprotocol-03" target=3D"_blank" style=3D"color:purple">https://to=
ols.ietf.org/html/draft-pei-opentrustprotocol-03</a>. This should give you =
an idea what this is about.</p><p class=3D"MsoNormal" style=3D"margin:0cm 0=
cm 0pt;font-size:11pt;font-family:calibri,sans-serif">=C2=A0</p><p class=3D=
"MsoNormal" style=3D"margin:0cm 0cm 0pt;font-size:11pt;font-family:calibri,=
sans-serif">In the BOF we would like to do the following:</p><p class=3D"Ms=
oNormal" style=3D"margin:0cm 0cm 0pt;font-size:11pt;font-family:calibri,san=
s-serif">=C2=A0* Explain TEEs, the problem we are trying to solve, and a bi=
t of history</p><p class=3D"MsoNormal" style=3D"margin:0cm 0cm 0pt;font-siz=
e:11pt;font-family:calibri,sans-serif">=C2=A0* Walk through some use cases<=
/p><p class=3D"MsoNormal" style=3D"margin:0cm 0cm 0pt;font-size:11pt;font-f=
amily:calibri,sans-serif">=C2=A0* Talk about the architecture</p><p class=
=3D"MsoNormal" style=3D"margin:0cm 0cm 0pt;font-size:11pt;font-family:calib=
ri,sans-serif">=C2=A0* Point to one possible solution</p><p class=3D"MsoNor=
mal" style=3D"margin:0cm 0cm 0pt;font-size:11pt;font-family:calibri,sans-se=
rif">=C2=A0</p><p class=3D"MsoNormal" style=3D"margin:0cm 0cm 0pt;font-size=
:11pt;font-family:calibri,sans-serif">In the end we would like to find out =
what the level of interest from the folks in the IETF to work on such a sol=
ution.</p><p class=3D"MsoNormal" style=3D"margin:0cm 0cm 0pt;font-size:11pt=
;font-family:calibri,sans-serif">=C2=A0</p><p class=3D"inbox-inbox-MsoPlain=
Text" style=3D"margin:0cm 0cm 0pt;font-size:11pt;font-family:calibri,sans-s=
erif"><br></p><p class=3D"inbox-inbox-MsoPlainText" style=3D"margin:0cm 0cm=
 0pt;font-size:11pt;font-family:calibri,sans-serif">Thanks,</p><p class=3D"=
inbox-inbox-MsoPlainText" style=3D"margin:0cm 0cm 0pt;font-size:11pt;font-f=
amily:calibri,sans-serif">Dapeng&amp;Hannes</p></div>

--001a113d1268bd3c1d054812bafc--


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Purpose: Discussion of Protocol for Dynamic Trusted Execution Environment Enablement


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Subject: [Teep] New Non-WG Mailing List: TEEP- A Protocol for Dynamic Trusted Execution Environment Enablement
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Purpose: 

Chips used on smart phones, tablets, and many consumer appliances today have built-in support for a so-called Trusted Execution Environment (TEE). The TEE is a security concept that separates normal operating systems, like Linux, from code that requires higher security protection, like security-related code. The underlying idea of this sandboxing approach is to have smaller code that is better reviewed and test and to provide it with more rights. They run on the so-called Secure World (in comparison to the Linux operating system that would run in the Normal World).

TEEs have been on the market for a while and have been successfully used for a number of applications, such as payment. However, the technology hasn't reached its full potential since ordinary developers who could make use of such functionality have a hard time getting access to it, and to write applications for it .

With the Open Trust Protocol, see https://tools.ietf.org/html/draft-pei-opentrustprotocol-03, we have been trying to develop this application layer security protocol that allows the management of credentials and the update of such applications. This list is used for the discussion of Protocol for Dynamic Trusted Execution Environment Enablement.


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Subject: [Teep] TEEP BoF WiKi
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Hello all:

Here is the WiKi of TEEP BoF:

https://trac.tools.ietf.org/bof/trac/wiki/WikiStart

________

*A Protocol for Dynamic Trusted Execution Environment Enablement (TEEP)*

   - Name: A Protocol for Dynamic Trusted Execution Environment Enablement
   (TEEP)
   - Description:
   The goal of this group is to standardize protocol for dynamic trusted
   excution environment enablement.

The industry has been working on an application layer security protocol
that allows to configure security credentials and software running on a
Trusted Execution Environment (TEE) for sometime. Today, TEEs are, for
example, found home routers, set-top boxes, smart phones, tablets,
wearables, etc. Unfortunately, there have been mostly proprietary protocols
used in this environment.

With this BOF we are making an attempt to standardize such a protocol. An
strawman proposal of such a protocol has been published with =E2=80=8B
https://tools.ietf.org/html/draft-pei-opentrustprotocol-03.

In the BOF we would like to do the following:


   - Explain TEEs, the problem we are trying to solve, and a bit of history
   - Walk through some use cases
   - Talk about the architecture
   - Point to one possible solution

In the end we would like to find out what the level of interest from the
folks in the IETF to work on such a solution.

   - Agenda
   - Introduction of TEEs and the history - 20 min
      - TEEP use cases and problem statement - 20 min
      - TEEP architecture - 20 min
      - Possible solutions - 15 min
      - Tough Questions - 10 minutes
      - Wrap up - 5 minutes


   - Status: WG Forming
   - Responsible AD: Kathleen Moriarty
   - BoF proponents: Dapeng Liu (Alibaba: =E2=80=8Bmax.ldp@alibaba-inc.com)=
, Hannes
   Tschofenig (ARM: =E2=80=8BHannes.Tschofenig@arm.com)
   - BoF chairs: TBD
   - Number of people expected to attend: 50
   - Length of session (1, 1.5, 2, or 2.5 hours): 1.5 hours
   - Conflicts to avoid (whole Areas and/or WGs): Security Area
   - Links to the mailing list, draft charter if any, relevant
   Internet-Drafts,
   - Mailing List: =E2=80=8B
      https://mailarchive.ietf.org/arch/search/?email_list=3Dteep[[BR]]


   - Relevant drafts:
   - Use case and problem statement
      - TBD
         - Possible Solution:
      - =E2=80=8Bhttps://tools.ietf.org/html/draft-pei-opentrustprotocol-03=
.

__________


Your comments&questions are welcomed!

Thanks,
Dapeng Liu

--001a113d1268dd45ee054828aece
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hello all:<div><br></div><div>Here is the WiKi of TEEP BoF=
:</div><div><br></div><div><a href=3D"https://trac.tools.ietf.org/bof/trac/=
wiki/WikiStart">https://trac.tools.ietf.org/bof/trac/wiki/WikiStart</a><br>=
</div><div><br></div><div>________</div><div><p style=3D"font-family:&quot;=
times new roman&quot;,times,serif;font-size:14.6667px"><strong>A Protocol f=
or Dynamic Trusted Execution Environment Enablement (TEEP)</strong><br></p>=
<ul style=3D"font-family:&quot;times new roman&quot;,times,serif;font-size:=
14.6667px"><li>Name: A Protocol for Dynamic Trusted Execution Environment E=
nablement (TEEP)<span class=3D"inbox-inbox-Apple-converted-space">=C2=A0</s=
pan><br></li><li>Description:<br>The goal of this group is to standardize p=
rotocol for dynamic trusted excution environment enablement.<br></li></ul><=
p style=3D"font-family:&quot;times new roman&quot;,times,serif;font-size:14=
.6667px"></p><blockquote style=3D"font-family:&quot;times new roman&quot;,t=
imes,serif;font-size:14.6667px"><p>The industry has been working on an appl=
ication layer security protocol that allows to configure security credentia=
ls and software running on a Trusted Execution Environment (TEE) for someti=
me. Today, TEEs are, for example, found home routers, set-top boxes, smart =
phones, tablets, wearables, etc. Unfortunately, there have been mostly prop=
rietary protocols used in this environment.<br></p></blockquote><p style=3D=
"font-family:&quot;times new roman&quot;,times,serif;font-size:14.6667px"><=
/p><blockquote style=3D"font-family:&quot;times new roman&quot;,times,serif=
;font-size:14.6667px"><p>With this BOF we are making an attempt to standard=
ize such a protocol. An strawman proposal of such a protocol has been publi=
shed with<span class=3D"inbox-inbox-Apple-converted-space">=C2=A0</span><a =
class=3D"inbox-inbox-ext-link" href=3D"https://tools.ietf.org/html/draft-pe=
i-opentrustprotocol-03" style=3D"color:rgb(68,0,136);border-bottom:0px"><sp=
an class=3D"inbox-inbox-icon" style=3D"background-image:url(&quot;../extlin=
k.gif&quot;);background-position:50% 50%;background-size:initial;background=
-repeat:no-repeat;background-origin:initial;background-clip:initial;backgro=
und-color:initial;padding-left:12px">=E2=80=8B</span>https://tools.ietf.org=
/html/draft-pei-opentrustprotocol-03</a>.<span class=3D"inbox-inbox-Apple-c=
onverted-space">=C2=A0</span><br></p></blockquote><p style=3D"font-family:&=
quot;times new roman&quot;,times,serif;font-size:14.6667px"></p><blockquote=
 style=3D"font-family:&quot;times new roman&quot;,times,serif;font-size:14.=
6667px"><p>In the BOF we would like to do the following:<br></p></blockquot=
e><ul style=3D"font-family:&quot;times new roman&quot;,times,serif;font-siz=
e:14.6667px"><li>Explain TEEs, the problem we are trying to solve, and a bi=
t of history<br></li><li>Walk through some use cases<br></li><li>Talk about=
 the architecture<br></li><li>Point to one possible solution<br></li></ul><=
p style=3D"font-family:&quot;times new roman&quot;,times,serif;font-size:14=
.6667px">In the end we would like to find out what the level of interest fr=
om the folks in the IETF to work on such a solution.<br></p><ul style=3D"fo=
nt-family:&quot;times new roman&quot;,times,serif;font-size:14.6667px"><li>=
Agenda<br><ul><li>Introduction of TEEs and the history - 20 min<br></li><li=
>TEEP use cases and problem statement - 20 min<br></li><li>TEEP architectur=
e - 20 min<br></li><li>Possible solutions - 15 min<br></li><li>Tough Questi=
ons - 10 minutes<br></li><li>Wrap up - 5 minutes<br></li></ul></li></ul><ul=
 style=3D"font-family:&quot;times new roman&quot;,times,serif;font-size:14.=
6667px"><li>Status: WG Forming<br></li><li>Responsible AD: Kathleen Moriart=
y<br></li><li>BoF proponents: Dapeng Liu (Alibaba:<span class=3D"inbox-inbo=
x-Apple-converted-space">=C2=A0</span><a class=3D"inbox-inbox-mail-link" hr=
ef=3D"mailto:max.ldp@alibaba-inc.com" style=3D"color:rgb(68,0,136);border-b=
ottom:0px"><span class=3D"inbox-inbox-icon" style=3D"background-image:url(&=
quot;../envelope.png&quot;);background-position:50% 50%;background-size:ini=
tial;background-repeat:no-repeat;background-origin:initial;background-clip:=
initial;background-color:initial;padding-left:14px">=E2=80=8B</span>max.ldp=
@alibaba-inc.com</a>), Hannes Tschofenig (ARM:<span class=3D"inbox-inbox-Ap=
ple-converted-space">=C2=A0</span><a class=3D"inbox-inbox-mail-link" href=
=3D"mailto:Hannes.Tschofenig@arm.com" style=3D"color:rgb(68,0,136);border-b=
ottom:0px"><span class=3D"inbox-inbox-icon" style=3D"background-image:url(&=
quot;../envelope.png&quot;);background-position:50% 50%;background-size:ini=
tial;background-repeat:no-repeat;background-origin:initial;background-clip:=
initial;background-color:initial;padding-left:14px">=E2=80=8B</span>Hannes.=
Tschofenig@arm.com</a>)<br></li><li>BoF chairs: TBD<br></li><li>Number of p=
eople expected to attend: 50<br></li><li>Length of session (1, 1.5, 2, or 2=
.5 hours): 1.5 hours<br></li><li>Conflicts to avoid (whole Areas and/or WGs=
): Security Area<br></li><li>Links to the mailing list, draft charter if an=
y, relevant Internet-Drafts,<span class=3D"inbox-inbox-Apple-converted-spac=
e">=C2=A0</span><br><ul><li>Mailing List:<span class=3D"inbox-inbox-Apple-c=
onverted-space">=C2=A0</span><a class=3D"inbox-inbox-ext-link" href=3D"http=
s://mailarchive.ietf.org/arch/search/?email_list=3Dteep[[BR" style=3D"color=
:rgb(68,0,136);border-bottom:0px"><span class=3D"inbox-inbox-icon" style=3D=
"background-image:url(&quot;../extlink.gif&quot;);background-position:50% 5=
0%;background-size:initial;background-repeat:no-repeat;background-origin:in=
itial;background-clip:initial;background-color:initial;padding-left:12px">=
=E2=80=8B</span>https://mailarchive.ietf.org/arch/search/?email_list=3Dteep=
[[BR</a>]]</li></ul></li></ul><p style=3D"font-family:&quot;times new roman=
&quot;,times,serif;font-size:14.6667px"></p><ul style=3D"font-family:&quot;=
times new roman&quot;,times,serif;font-size:14.6667px"><li>Relevant drafts:=
<br></li><ul><li>Use case and problem statement<span class=3D"inbox-inbox-A=
pple-converted-space">=C2=A0</span><br><ul><li>TBD<br></li></ul></li><li>Po=
ssible Solution:<br></li><ul><li><a class=3D"inbox-inbox-ext-link" href=3D"=
https://tools.ietf.org/html/draft-pei-opentrustprotocol-03" style=3D"color:=
rgb(68,0,136);border-bottom:0px"><span class=3D"inbox-inbox-icon" style=3D"=
background-image:url(&quot;../extlink.gif&quot;);background-position:50% 50=
%;background-size:initial;background-repeat:no-repeat;background-origin:ini=
tial;background-clip:initial;background-color:initial;padding-left:12px">=
=E2=80=8B</span>https://tools.ietf.org/html/draft-pei-opentrustprotocol-03<=
/a>.<span class=3D"inbox-inbox-Apple-converted-space">=C2=A0</span></li></u=
l></ul></ul><div><font face=3D"times new roman, times, serif"><span style=
=3D"font-size:14.6667px">__________</span></font></div></div><div><font fac=
e=3D"times new roman, times, serif"><span style=3D"font-size:14.6667px"><br=
></span></font></div><div><font face=3D"times new roman, times, serif"><spa=
n style=3D"font-size:14.6667px"><br></span></font></div><div><span style=3D=
"font-size:14.6667px;font-family:&quot;times new roman&quot;,times,serif">Y=
our=C2=A0comments&amp;questions are welcomed!</span><br></div><div><font fa=
ce=3D"times new roman, times, serif"><span style=3D"font-size:14.6667px"><b=
r></span></font></div><div><font face=3D"times new roman, times, serif"><sp=
an style=3D"font-size:14.6667px">Thanks,</span></font></div><div><font face=
=3D"times new roman, times, serif"><span style=3D"font-size:14.6667px">Dape=
ng Liu</span></font></div></div>

--001a113d1268dd45ee054828aece--


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From: Mingliang Pei <Mingliang_Pei@symantec.com>
To: "teep@ietf.org" <teep@ietf.org>
Thread-Topic: Re - TEEP BoF WiKi
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Subject: [Teep] Re - TEEP BoF WiKi
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Thanks for the initiative of TEEP BoF. I fully agree that the problems that=
 TEEP tries to address is an important area. I look forward to the BoF and =
some WG forming for solving the needed interoperability protocol in managin=
g TEE trusted applications.


There is a need of a standard protocol that can establish the trust between=
 a device entity and an application manager provider. Such a trust is funda=
mental in the application and growth of the use of TEE.


The basic use cases are as follows in establishing trust for TEE and its ap=
plication management providers.


1. A device TEE needs to validate and trust a remote trusted application ma=
nager (TAM) before it allows the TAM installs and updates applications and =
security domains in the device.


2. A trusted application manager needs to be able to reliably attest a devi=
ce that it targets to deploy and update a trusted application.


The device attestation to a remote service is important, and it must be don=
e in an interoperable way to allow many service managers and service provid=
ers.


In a subset of this, a TEE in a device carries the main elements of device =
attestation information such as a device key and so on.


3. A service provider that developers a trusted application may remotely ma=
nage a device via a TAM protocol and further a TAM provider as it chooses t=
o do so.


4. There needs a standard way to manage security domains in a TEE of a devi=
ce by TAM providers.


There is a gap today in addressing the trust establishment problem. The pro=
posal https://tools.ietf.org/html/draft-pei-opentrustprotocol-03 aimed to f=
ill the gap in this.


Thanks,


Ming



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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
1">
<style type=3D"text/css" style=3D"display:none;"><!-- P {margin-top:0;margi=
n-bottom:0;} --></style>
</head>
<body dir=3D"ltr">
<div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font=
-family:Calibri,Arial,Helvetica,sans-serif;" dir=3D"ltr">
<p>Thanks for the initiative of TEEP BoF. I fully&nbsp;agree that the probl=
ems that TEEP tries to address is an important area.&nbsp;I look forward to=
 the BoF and some&nbsp;WG forming&nbsp;for solving the needed interoperabil=
ity protocol&nbsp;in managing TEE trusted applications.</p>
<p><br>
</p>
<p>There is a&nbsp;need of a&nbsp;standard protocol that can establish&nbsp=
;the trust between a device entity&nbsp;and an application&nbsp;manager pro=
vider. Such a trust is fundamental&nbsp;in the application and growth of th=
e&nbsp;use of TEE.&nbsp;</p>
<p><br>
</p>
<p>The basic use cases are as follows in establishing trust for TEE and its=
 application management providers.</p>
<p><br>
</p>
<p>1. A device TEE&nbsp;needs to validate and trust a remote trusted applic=
ation manager (TAM) before it allows the TAM installs and updates applicati=
ons and security domains in the device.</p>
<p><br>
</p>
<p>2. A trusted application manager needs to be able to reliably attest a d=
evice that it targets to deploy and update a trusted application.</p>
<p><br>
</p>
<p>The device attestation to a remote service is important, and it must be =
done in an interoperable way to allow many service managers and service pro=
viders.</p>
<p><br>
</p>
<p>In a subset of this, a TEE in a device carries the main elements of devi=
ce attestation information such as a device key and so on.</p>
<p><br>
</p>
<p>3. A service provider that developers a trusted application may remotely=
 manage a device via a TAM protocol and further a TAM provider as it choose=
s to do so.</p>
<p><br>
</p>
<p>4. There needs a standard way to manage security domains in a TEE of a d=
evice by TAM providers.</p>
<p><br>
</p>
<p>There is a gap today in addressing the trust establishment problem. The =
proposal&nbsp;<a rel=3D"nofollow" class=3D"inbox-inbox-ext-link" href=3D"ht=
tps://tools.ietf.org/html/draft-pei-opentrustprotocol-03" style=3D"font-fam=
ily: &quot;times new roman&quot;, times, serif; font-size: 14.6667px; color=
: rgb(68, 0, 136); border-bottom: 0px;" id=3D"LPlnk119523" previewremoved=
=3D"true">https://tools.ietf.org/html/draft-pei-opentrustprotocol-03</a><fo=
nt face=3D"times new roman, times, serif"><span style=3D"font-size: 14.6667=
px;">&nbsp;aimed
 to fill the gap in this.</span></font></p>
<p><br>
</p>
<p>Thanks,</p>
<p><br>
</p>
<p>Ming</p>
<p><br>
</p>
<p><font face=3D"times new roman, times, serif"><span style=3D"font-size: 1=
4.6667px;"><br>
</span></font></p>
</div>
</body>
</html>

--_000_DM3PR16MB0554DEB3B639F3EB49CA3264EC590DM3PR16MB0554namp_--


From nobody Wed Feb 15 20:13:02 2017
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Subject: [Teep] teep - New Meeting Session Request for IETF 98
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A new meeting session request has just been submitted by Cindy Morgan, on behalf of the teep working group.


---------------------------------------------------------
Working Group Name: A Protocol for Dynamic Trusted Execution Environment Enablement
Area Name: Security Area
Session Requester: Cindy Morgan

Number of Sessions: 1
Length of Session(s):  1.5 Hours
Number of Attendees: 50
Conflicts to Avoid: 
 First Priority: saag, opsarea, opsawg, ace, acme, curdle, dane, dots, i2nsf, ipsecme, kitten, lamps, mile, oauth, openpgp, sacm, secevent, tls, tokbind, trans 	




People who must be present:
  Kathleen Moriarty

Resources Requested:

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


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From nobody Thu Feb 16 00:48:35 2017
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Hello all,

 

Nice to see the progress of OTrP in IETF, and I look forward to solving the
urgent problems in TEE ecosystem.

 

B.R/Vicky 

 


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>Nice to see the progress of OTrP in IETF, and I look forward to solving =
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
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Subject: [Teep] Open Trust Protocol & CBOR encoding
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Hi all,

Ned Smith (from Intel) privately asked me whether we had considered using a=
 CBOR encoding during the design of the protocol.

I thought it was a good question and so I wanted to share my view about the=
 topic with others on the list.

CBOR clearly has benefits compared to JSON. However, the main use cases foc=
used on the smart phone/tablet environment and JSON is more widely used by =
developers. I believe this was the reason for re-using JSON and the already=
 mature JOSE security work. When it comes to code availability COSE (the CB=
OR security work) is far, far behind JOSE. Since the security components re=
quire more implementation time I think it is fair to consider them as well.

Ned suggested to separate the information model from the actual encoding to=
 later be able to switch to a different encoding easily. I like that idea a=
nd I think we should do that.

What do others think?

Ciao
Hannes

IMPORTANT NOTICE: The contents of this email and any attachments are confid=
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<p class=3D"MsoNormal">Hi all, <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ned Smith (from Intel) privately asked me whether we=
 had considered using a CBOR encoding during the design of the protocol.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I thought it was a good question and so I wanted to =
share my view about the topic with others on the list.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">CBOR clearly has benefits compared to JSON. However,=
 the main use cases focused on the smart phone/tablet environment and JSON =
is more widely used by developers. I believe this was the reason for re-usi=
ng JSON and the already mature JOSE
 security work. When it comes to code availability COSE (the CBOR security =
work) is far, far behind JOSE. Since the security components require more i=
mplementation time I think it is fair to consider them as well.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ned suggested to separate the information model from=
 the actual encoding to later be able to switch to a different encoding eas=
ily. I like that idea and I think we should do that.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">What do others think? <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ciao<o:p></o:p></p>
<p class=3D"MsoNormal">Hannes<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
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To: Eliot Lear <lear@cisco.com>
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Subject: Re: [Teep] [saag] BOFs about IoT firmware update and TEE configuration
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To: Eliot Lear <lear@cisco.com>
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Hi Eliot,


(I put the TEEP mailing list on CC since they may be interested in this
conversation as well.)

The use case for TEEP is a bit different.

The idea is to configure software running on a trusted execution
environment. While the currently proposed solution assumes a PKI and the
use of asymmetric key cryptography it does not use 802.1AR certificates.
There is no notion of a local network since it does not matter. The
document also does not talk about how the messages are conveyed but HTTP
is more likely for the smart phone/tablet use cases.


I created a slide deck for presentation at the T2TRG meeting at the
Berlin IETF but unfortunately there was no time. Nevertheless, here is
the slide deck:
https://github.com/t2trg/2016-ietf96/blob/master/slides/70_OTrP-IETF93.pd=
f

Does this provide enough information about the intention?

Ciao
Hannes

On 02/20/2017 03:58 PM, Eliot Lear wrote:
> Hi Hannes,
>=20
> First, Max, Michael, Michael, and Kent are far more the experts than I
> am on this, but here is a brief summary:
>=20
> The purpose of  draft-ietf-anima-bootstrap-keyinfra is to provide a
> trusted introduction between devices and the network such that you star=
t
> in the following state:
>=20
> Device has a manufacturer certificate (802.1AR iDevID) and a
> manufacturer trust root, and the local network can in some way
> authenticate the manufacturer, and perhaps visa versa.  The end state i=
s
> that the device has a local (802.1 LDevID) and a local trust anchor.  T=
o
> accomplish this, a flow is defined to get to the point where the device=

> will register with a local registrar using EST (either EST or EST/CoAP)=
=2E
>=20
> Now perhaps you could explain a little about the TEE draft you're doing=
?
>=20
> If there's some overlap perhaps there's a chance to consolidate the wor=
k.
>=20
> Eliot
>=20
>=20
>=20
> On 2/18/17 5:17 PM, Hannes Tschofenig wrote:
>> Hi Eliot,
>>
>> I actually don't know since I never understood the ANIMA work all that=

>> well due to its fuzzy scope. I suspect that you can answer the questio=
n
>> better than I do.
>>
>> Ciao
>> Hannes
>>
>> On 02/13/2017 02:29 PM, Eliot Lear wrote:
>>> Hannes,
>>>
>>> Can you say a few words about how TEE compares to
>>> draft-ietf-anima-bootstrap-keyinfra (et al) which has been in
>>> development in a WG for quite some time?
>>>
>>> Eliot
>>>
>>>
>>> On 2/13/17 12:51 PM, Hannes Tschofenig wrote:
>>>> Hi all,
>>>>
>>>> we have proposed two security-relevant BOFs for the upcoming meeting=
=2E
>>>> They are listed on the BOF Wiki page at
>>>> https://trac.tools.ietf.org/bof/trac/wiki but I still wanted to brie=
fly
>>>> introduce them to you
>>>>
>>>> ** =E2=80=9CFirmware Update Description (FUD)=E2=80=9D
>>>>
>>>> Last year we had a workshop organized by the IAB on firmware updates=
 for
>>>> IoT devices (see https://www.iab.org/activities/workshops/iotsu/) wh=
ere
>>>> we talked about various challenges and gaps.
>>>>
>>>> As a follow-up to the workshop we would like to initiate some
>>>> standardization activity in this area.
>>>>
>>>> The mailing list can be found at
>>>> https://www.ietf.org/mailman/listinfo/fud
>>>>
>>>>
>>>> ** =E2=80=9CA Protocol for Dynamic Trusted Execution Environment Ena=
blement (TEEP)=E2=80=9D
>>>>
>>>> This BOF is about an application layer security protocol that allows=
 to
>>>> configure security credentials and software running on a Trusted
>>>> Execution Environment (TEE). Today, TEEs are, for example, found hom=
e
>>>> routers, set-top boxes, smart phones, tablets, wearables, etc.
>>>> Unfortunately, there have been mostly proprietary protocols used in =
this
>>>> environment.
>>>>
>>>> With this BOF we are making an attempt to standardize such a protoco=
l. A
>>>> strawman proposal of such a protocol has been published with
>>>> https://tools.ietf.org/html/draft-pei-opentrustprotocol-03.
>>>>
>>>> The mailing list can be found at:
>>>> https://www.ietf.org/mailman/listinfo/teep
>>>>
>>>>
>>>>
>>>>
>>>> Ciao
>>>> Hannes
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> saag mailing list
>>>> saag@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/saag
>=20
>=20


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Subject: [Teep] BOF in Chicago
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Subject: BOF in Chicago

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Hi all,

I had gotten a few questions about when the TEEP BOF will happen during
the IETF meeting in Chicago.

The meeting schedule is still ongoing and a preliminary agenda is
expected to be available this Friday (Feb. 24th).

The final agenda is expected to be available March 3rd.

There is also a deadline for submitting documents, namely March 13th.

I will post the agenda to the list once it becomes available.

Ciao
Hannes


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To: Hannes Tschofenig <hannes.tschofenig@gmx.net>
References: <16c236b7-dd80-1e27-8de9-16f05558d38e@gmx.net> <dbc93119-3128-64e0-b6b0-1a0e87e95f90@cisco.com> <1da45f12-7999-6a9e-3649-2ffea4d50511@gmx.net> <fe6c2aaf-dc0a-bfc2-59c2-a077ddc4e43b@cisco.com> <6916bccf-9273-5d2f-af44-ef38d1394223@gmx.net>
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Subject: Re: [Teep] [saag] BOFs about IoT firmware update and TEE configuration
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Subject: Re: [saag] BOFs about IoT firmware update and TEE configuration
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Great start, thanks!  Will contact you offline to further discuss.

Eliot


On 2/22/17 9:15 AM, Hannes Tschofenig wrote:
> Hi Eliot,
>
>
> (I put the TEEP mailing list on CC since they may be interested in this=

> conversation as well.)
>
> The use case for TEEP is a bit different.
>
> The idea is to configure software running on a trusted execution
> environment. While the currently proposed solution assumes a PKI and th=
e
> use of asymmetric key cryptography it does not use 802.1AR certificates=
=2E
> There is no notion of a local network since it does not matter. The
> document also does not talk about how the messages are conveyed but HTT=
P
> is more likely for the smart phone/tablet use cases.
>
>
> I created a slide deck for presentation at the T2TRG meeting at the
> Berlin IETF but unfortunately there was no time. Nevertheless, here is
> the slide deck:
> https://github.com/t2trg/2016-ietf96/blob/master/slides/70_OTrP-IETF93.=
pdf
>
> Does this provide enough information about the intention?
>
> Ciao
> Hannes
>
> On 02/20/2017 03:58 PM, Eliot Lear wrote:
>> Hi Hannes,
>>
>> First, Max, Michael, Michael, and Kent are far more the experts than I=

>> am on this, but here is a brief summary:
>>
>> The purpose of  draft-ietf-anima-bootstrap-keyinfra is to provide a
>> trusted introduction between devices and the network such that you sta=
rt
>> in the following state:
>>
>> Device has a manufacturer certificate (802.1AR iDevID) and a
>> manufacturer trust root, and the local network can in some way
>> authenticate the manufacturer, and perhaps visa versa.  The end state =
is
>> that the device has a local (802.1 LDevID) and a local trust anchor.  =
To
>> accomplish this, a flow is defined to get to the point where the devic=
e
>> will register with a local registrar using EST (either EST or EST/CoAP=
).
>>
>> Now perhaps you could explain a little about the TEE draft you're doin=
g?
>>
>> If there's some overlap perhaps there's a chance to consolidate the wo=
rk.
>>
>> Eliot
>>
>>
>>
>> On 2/18/17 5:17 PM, Hannes Tschofenig wrote:
>>> Hi Eliot,
>>>
>>> I actually don't know since I never understood the ANIMA work all tha=
t
>>> well due to its fuzzy scope. I suspect that you can answer the questi=
on
>>> better than I do.
>>>
>>> Ciao
>>> Hannes
>>>
>>> On 02/13/2017 02:29 PM, Eliot Lear wrote:
>>>> Hannes,
>>>>
>>>> Can you say a few words about how TEE compares to
>>>> draft-ietf-anima-bootstrap-keyinfra (et al) which has been in
>>>> development in a WG for quite some time?
>>>>
>>>> Eliot
>>>>
>>>>
>>>> On 2/13/17 12:51 PM, Hannes Tschofenig wrote:
>>>>> Hi all,
>>>>>
>>>>> we have proposed two security-relevant BOFs for the upcoming meetin=
g.
>>>>> They are listed on the BOF Wiki page at
>>>>> https://trac.tools.ietf.org/bof/trac/wiki but I still wanted to bri=
efly
>>>>> introduce them to you
>>>>>
>>>>> ** =E2=80=9CFirmware Update Description (FUD)=E2=80=9D
>>>>>
>>>>> Last year we had a workshop organized by the IAB on firmware update=
s for
>>>>> IoT devices (see https://www.iab.org/activities/workshops/iotsu/) w=
here
>>>>> we talked about various challenges and gaps.
>>>>>
>>>>> As a follow-up to the workshop we would like to initiate some
>>>>> standardization activity in this area.
>>>>>
>>>>> The mailing list can be found at
>>>>> https://www.ietf.org/mailman/listinfo/fud
>>>>>
>>>>>
>>>>> ** =E2=80=9CA Protocol for Dynamic Trusted Execution Environment En=
ablement (TEEP)=E2=80=9D
>>>>>
>>>>> This BOF is about an application layer security protocol that allow=
s to
>>>>> configure security credentials and software running on a Trusted
>>>>> Execution Environment (TEE). Today, TEEs are, for example, found ho=
me
>>>>> routers, set-top boxes, smart phones, tablets, wearables, etc.
>>>>> Unfortunately, there have been mostly proprietary protocols used in=
 this
>>>>> environment.
>>>>>
>>>>> With this BOF we are making an attempt to standardize such a protoc=
ol. A
>>>>> strawman proposal of such a protocol has been published with
>>>>> https://tools.ietf.org/html/draft-pei-opentrustprotocol-03.
>>>>>
>>>>> The mailing list can be found at:
>>>>> https://www.ietf.org/mailman/listinfo/teep
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Ciao
>>>>> Hannes
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> saag mailing list
>>>>> saag@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/saag
>>



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From: "=?GBK?B?t73HvyjHv87lKQ==?=" <qiangwu.fq@alibaba-inc.com>
To: "'Hannes Tschofenig'" <Hannes.Tschofenig@arm.com>, <teep@ietf.org>
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Hi, Hannes and all,

=20

I want to share some ideas about CBOR.

=20

CBOR is very suitable for use in the scenario of IoT area ,  and because
CBOR is based on the wildly successful JSON data model: numbers, =
strings,
arrays, maps (called objects in JSON), and a few values such as false, =
true,
and null, implement of  the switch between the Json and Cbor should not =
be
particularly difficult. We have already started writing a draft in Cbor.

=20

=20

=20

Regards,

=20

Adam=20

--

Alibaba

 <mailto:Qiangwu.fq@alibaba-inc.com> Qiangwu.fq@alibaba-inc.com

=20

=20

=B7=A2=BC=FE=C8=CB: Hannes Tschofenig [mailto:Hannes.Tschofenig@arm.com] =

=B7=A2=CB=CD=CA=B1=BC=E4: 2017=C4=EA2=D4=C222=C8=D5 16:16
=CA=D5=BC=FE=C8=CB: 'teep@ietf.org' <teep@ietf.org>
=D6=F7=CC=E2: [Teep] Open Trust Protocol & CBOR encoding

=20

Hi all,=20

=20

Ned Smith (from Intel) privately asked me whether we had considered =
using a
CBOR encoding during the design of the protocol.=20

=20

I thought it was a good question and so I wanted to share my view about =
the
topic with others on the list.=20

=20

CBOR clearly has benefits compared to JSON. However, the main use cases
focused on the smart phone/tablet environment and JSON is more widely =
used
by developers. I believe this was the reason for re-using JSON and the
already mature JOSE security work. When it comes to code availability =
COSE
(the CBOR security work) is far, far behind JOSE. Since the security
components require more implementation time I think it is fair to =
consider
them as well.=20

=20

Ned suggested to separate the information model from the actual encoding =
to
later be able to switch to a different encoding easily. I like that idea =
and
I think we should do that.=20

=20

What do others think?=20

=20

Ciao

Hannes

=20

IMPORTANT NOTICE: The contents of this email and any attachments are
confidential and may also be privileged. If you are not the intended
recipient, please notify the sender immediately and do not disclose the
contents to any other person, use it for any purpose, or store or copy =
the
information in any medium. Thank you.=20


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<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DZH-CN link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Hi,</=
span><span lang=3DEN-US> </span><span lang=3DEN-GB>Hannes and =
all,<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB style=3D'mso-fareast-language:ZH-CN'>I want to share some =
ideas about CBOR.<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB =
style=3D'mso-fareast-language:ZH-CN'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'mso-fareast-language:ZH-CN'>CBOR is very suitable for use in =
the scenario of IoT area , &nbsp;and because &nbsp;CBOR is based on the =
wildly successful JSON data model: numbers, strings, arrays, maps =
(called objects in JSON), and a few values such as false, true, and =
null, implement of &nbsp;the switch between the Json and Cbor should not =
be particularly difficult. We have already started writing a draft in =
Cbor.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Regar=
ds,<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Adam =
<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>--<o:=
p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Aliba=
ba<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><a =
href=3D"mailto:Qiangwu.fq@alibaba-inc.com"><span =
style=3D'color:#0563C1'>Qiangwu.fq@alibaba-inc.com</span></a><o:p></o:p><=
/span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><div><div style=3D'border:none;border-top:solid =
#E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=A2=BC=FE=C8=CB<span =
lang=3DEN-US>:</span></span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> Hannes Tschofenig [mailto:Hannes.Tschofenig@arm.com] =
<br></span><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=A2=CB=CD=CA=B1=BC=E4<span =
lang=3DEN-US>:</span></span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> 2017</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=C4=EA<span lang=3DEN-US>2</span>=D4=C2<span =
lang=3DEN-US>22</span>=C8=D5<span lang=3DEN-US> =
16:16<br></span><b>=CA=D5=BC=FE=C8=CB<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> 'teep@ietf.org' =
&lt;teep@ietf.org&gt;<br></span><b>=D6=F7=CC=E2<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> [Teep] Open Trust Protocol =
&amp; CBOR encoding<o:p></o:p></span></span></p></div></div><p =
class=3DMsoNormal><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB>Hi all, <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB>Ned Smith (from Intel) privately =
asked me whether we had considered using a CBOR encoding during the =
design of the protocol. <o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>I thought it was a good question and so I wanted to share =
my view about the topic with others on the list. =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>CBOR clearly has benefits compared to JSON. However, the =
main use cases focused on the smart phone/tablet environment and JSON is =
more widely used by developers. I believe this was the reason for =
re-using JSON and the already mature JOSE security work. When it comes =
to code availability COSE (the CBOR security work) is far, far behind =
JOSE. Since the security components require more implementation time I =
think it is fair to consider them as well. <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB>Ned suggested to separate the =
information model from the actual encoding to later be able to switch to =
a different encoding easily. I like that idea and I think we should do =
that. <o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>What do others think? <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB>Ciao<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB>Hannes<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'font-size:12.0pt;font-family:"Times New =
Roman",serif;mso-fareast-language:ZH-CN'>IMPORTANT NOTICE: The contents =
of this email and any attachments are confidential and may also be =
privileged. If you are not the intended recipient, please notify the =
sender immediately and do not disclose the contents to any other person, =
use it for any purpose, or store or copy the information in any medium. =
Thank you. <o:p></o:p></span></p></div></body></html>
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: =?gb2312?B?J7e9x78ox7/O5Skn?= <qiangwu.fq@alibaba-inc.com>, "'teep@ietf.org'" <teep@ietf.org>
Thread-Topic: [Teep] Open Trust Protocol & CBOR encoding
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Archived-At: <https://mailarchive.ietf.org/arch/msg/teep/yn15n-CfURP-b1zy8E60LgOGjTI>
Subject: Re: [Teep] Open Trust Protocol & CBOR encoding
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<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks for the quick r=
esponse, Adam.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Is it fair to assume t=
hat you are going to submit the draft in time for this IETF draft submissio=
n deadline?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Can you say something =
about the use case you had in mind in the IoT environment? I always tend to=
 make a differentiation between Cortex A class processor and M-class proces=
sors. While there are IoT devices out
 there that use A class processors the majority are, however, using M-class=
 processors due to their lower price tag, and lower energy consumption.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Ciao<br>
Hannes<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
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;;mso-fareast-language:ZH=
-CN">From:</span></b><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-fa=
mily:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">
</span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font-family:SimSun;ms=
o-fareast-language:ZH-CN">=B7=BD=C7=BF</span><span lang=3D"EN-US" style=3D"=
font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-=
fareast-language:ZH-CN">(</span><span lang=3D"ZH-CN" style=3D"font-size:10.=
0pt;font-family:SimSun;mso-fareast-language:ZH-CN">=C7=BF=CE=E5</span><span=
 lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&q=
uot;sans-serif&quot;;mso-fareast-language:ZH-CN">)
 [mailto:qiangwu.fq@alibaba-inc.com] <br>
<b>Sent:</b> 22 February 2017 10:08<br>
<b>To:</b> Hannes Tschofenig; teep@ietf.org<br>
<b>Subject:</b> </span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font-=
family:SimSun;mso-fareast-language:ZH-CN">=B4=F0=B8=B4</span><span lang=3D"=
EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-=
serif&quot;;mso-fareast-language:ZH-CN">: [Teep] Open Trust Protocol &amp;
 CBOR encoding<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" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">Hi,</span><span lang=3D"EN-US">
</span>Hannes and all,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">I want to=
 share some ideas about CBOR.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">CBOR is v=
ery suitable for use in the scenario of IoT area , &nbsp;and because &nbsp;=
CBOR is based on the wildly successful JSON data model: numbers, strings, a=
rrays, maps (called objects in JSON), and a few
 values such as false, true, and null, implement of &nbsp;the switch betwee=
n the Json and Cbor should not be particularly difficult. We have already s=
tarted writing a draft in Cbor.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:#1F497D;mso-fa=
reast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Adam
<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">--<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Alibaba<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN"><a href=3D"mailto:Qiangwu.fq@alibaba-inc.com"><span sty=
le=3D"color:#0563C1">Qiangwu.fq@alibaba-inc.com</span></a><o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;M=
icrosoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=
=A2=BC=FE=C8=CB</span></b><b><span lang=3D"EN-US" style=3D"font-family:&quo=
t;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=
:</span></b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">
 Hannes Tschofenig [<a href=3D"mailto:Hannes.Tschofenig@arm.com">mailto:Han=
nes.Tschofenig@arm.com</a>]
<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=A2=CB=CD=CA=B1=
=BC=E4</span></b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microso=
ft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span><=
/b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&q=
uot;sans-serif&quot;;mso-fareast-language:ZH-CN">
 2017</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=C4=EA</span><spa=
n lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:ZH-CN">2</span><span lang=3D"ZH-CN" styl=
e=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-far=
east-language:ZH-CN">=D4=C2</span><span lang=3D"EN-US" style=3D"font-family=
:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH=
-CN">22</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaH=
ei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=C8=D5</span><s=
pan lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;s=
ans-serif&quot;;mso-fareast-language:ZH-CN">
 16:16<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=CA=D5=BC=FE=C8=CB<=
/span></b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHe=
i&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span></b><spa=
n lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:ZH-CN">
 'teep@ietf.org' &lt;<a href=3D"mailto:teep@ietf.org">teep@ietf.org</a>&gt;=
<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=D6=F7=CC=E2</span>=
</b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot=
;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span></b><span lang=
=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-seri=
f&quot;;mso-fareast-language:ZH-CN">
 [Teep] Open Trust Protocol &amp; CBOR encoding<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal">Hi all, <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ned Smith (from Intel) privately asked me whether we=
 had considered using a CBOR encoding during the design of the protocol.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I thought it was a good question and so I wanted to =
share my view about the topic with others on the list.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">CBOR clearly has benefits compared to JSON. However,=
 the main use cases focused on the smart phone/tablet environment and JSON =
is more widely used by developers. I believe this was the reason for re-usi=
ng JSON and the already mature JOSE
 security work. When it comes to code availability COSE (the CBOR security =
work) is far, far behind JOSE. Since the security components require more i=
mplementation time I think it is fair to consider them as well.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ned suggested to separate the information model from=
 the actual encoding to later be able to switch to a different encoding eas=
ily. I like that idea and I think we should do that.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">What do others think? <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ciao<o:p></o:p></p>
<p class=3D"MsoNormal">Hannes<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;mso-fareast-language:ZH-CN">IMPORTANT=
 NOTICE: The contents of this email and any attachments are confidential an=
d may also be privileged. If you are not the intended recipient,
 please notify the sender immediately and do not disclose the contents to a=
ny other person, use it for any purpose, or store or copy the information i=
n any medium. Thank you.
<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: "=?GBK?B?t73HvyjHv87lKQ==?=" <qiangwu.fq@alibaba-inc.com>
To: "'Hannes Tschofenig'" <Hannes.Tschofenig@arm.com>, <teep@ietf.org>
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Hi, Hannes

=20

For the first question, my answer is: yes, we are going to submit the =
draft
in time for this IETF draft submission deadline.

=20

For the second question, I would like to share my view below:

=20

Cortex A is usually used in some of better scalability (such as with =
large
off-line storage) equipment, these devices include: mobile phones, =
unmanned
aerial vehicles.

=20

The use of Cortex M on embedded devices is very extensive, and these =
devices
have very limited CPU and memory resources (total memory may only be =
1M),
these devices include: Smart bracelet, industrial control devices on the
car, and other smart home devices without screens . In these scenarios, =
in
order to be able to save resources, the use of binary programs is very
necessary.

=20

=20

Regards,

=20

Adam=20

--

Alibaba

 <mailto:Qiangwu.fq@alibaba-inc.com> Qiangwu.fq@alibaba-inc.com

=20

=20

=B7=A2=BC=FE=C8=CB: Hannes Tschofenig [mailto:Hannes.Tschofenig@arm.com] =

=B7=A2=CB=CD=CA=B1=BC=E4: 2017=C4=EA2=D4=C222=C8=D5 17:16
=CA=D5=BC=FE=C8=CB: =B7=BD=C7=BF(=C7=BF=CE=E5) =
<qiangwu.fq@alibaba-inc.com>; 'teep@ietf.org' <teep@ietf.
org>
=D6=F7=CC=E2: RE: [Teep] Open Trust Protocol & CBOR encoding

=20

Thanks for the quick response, Adam.=20

=20

Is it fair to assume that you are going to submit the draft in time for =
this
IETF draft submission deadline?=20

=20

Can you say something about the use case you had in mind in the IoT
environment? I always tend to make a differentiation between Cortex A =
class
processor and M-class processors. While there are IoT devices out there =
that
use A class processors the majority are, however, using M-class =
processors
due to their lower price tag, and lower energy consumption.=20

=20

Ciao
Hannes

=20

From: =B7=BD=C7=BF(=C7=BF=CE=E5) [mailto:qiangwu.fq@alibaba-inc.com]=20
Sent: 22 February 2017 10:08
To: Hannes Tschofenig; teep@ietf.org <mailto:teep@ietf.org>=20
Subject: =B4=F0=B8=B4: [Teep] Open Trust Protocol & CBOR encoding

=20

Hi, Hannes and all,

=20

I want to share some ideas about CBOR.

=20

CBOR is very suitable for use in the scenario of IoT area ,  and because
CBOR is based on the wildly successful JSON data model: numbers, =
strings,
arrays, maps (called objects in JSON), and a few values such as false, =
true,
and null, implement of  the switch between the Json and Cbor should not =
be
particularly difficult. We have already started writing a draft in Cbor.

=20

=20

=20

Regards,

=20

Adam=20

--

Alibaba

 <mailto:Qiangwu.fq@alibaba-inc.com> Qiangwu.fq@alibaba-inc.com

=20

=20

=B7=A2=BC=FE=C8=CB: Hannes Tschofenig [mailto:Hannes.Tschofenig@arm.com] =

=B7=A2=CB=CD=CA=B1=BC=E4: 2017=C4=EA2=D4=C222=C8=D5 16:16
=CA=D5=BC=FE=C8=CB: 'teep@ietf.org' <teep@ietf.org =
<mailto:teep@ietf.org> >
=D6=F7=CC=E2: [Teep] Open Trust Protocol & CBOR encoding

=20

Hi all,=20

=20

Ned Smith (from Intel) privately asked me whether we had considered =
using a
CBOR encoding during the design of the protocol.=20

=20

I thought it was a good question and so I wanted to share my view about =
the
topic with others on the list.=20

=20

CBOR clearly has benefits compared to JSON. However, the main use cases
focused on the smart phone/tablet environment and JSON is more widely =
used
by developers. I believe this was the reason for re-using JSON and the
already mature JOSE security work. When it comes to code availability =
COSE
(the CBOR security work) is far, far behind JOSE. Since the security
components require more implementation time I think it is fair to =
consider
them as well.=20

=20

Ned suggested to separate the information model from the actual encoding =
to
later be able to switch to a different encoding easily. I like that idea =
and
I think we should do that.=20

=20

What do others think?=20

=20

Ciao

Hannes

=20

IMPORTANT NOTICE: The contents of this email and any attachments are
confidential and may also be privileged. If you are not the intended
recipient, please notify the sender immediately and do not disclose the
contents to any other person, use it for any purpose, or store or copy =
the
information in any medium. Thank you.=20

IMPORTANT NOTICE: The contents of this email and any attachments are
confidential and may also be privileged. If you are not the intended
recipient, please notify the sender immediately and do not disclose the
contents to any other person, use it for any purpose, or store or copy =
the
information in any medium. Thank you.=20


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</o:shapelayout></xml><![endif]--></head><body lang=3DZH-CN link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Hi, =
Hannes<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>For =
the first question, my answer is: yes, we are going to submit the draft =
in time for this IETF draft submission deadline.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>For =
the second question, I would like to share my view =
below:<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'>Cortex</span><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'> A =
is usually used in some of better scalability (such as with large =
off-line storage) equipment, these devices include: mobile phones, =
unmanned aerial vehicles.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>The =
use of </span><span lang=3DEN-GB =
style=3D'color:#1F497D'>Cortex</span><span lang=3DEN-GB =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'> =
</span><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>M on =
embedded devices is very extensive, and these devices have very limited =
CPU and memory resources (total memory may only be 1M), these devices =
include: Smart bracelet, industrial control devices on the car, and =
other smart home devices without screens . In these scenarios, in order =
to be able to save resources, the use of binary programs is very =
necessary.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Regar=
ds,<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Adam =
<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>--<o:=
p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Aliba=
ba<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><a =
href=3D"mailto:Qiangwu.fq@alibaba-inc.com"><span =
style=3D'color:#0563C1'>Qiangwu.fq@alibaba-inc.com</span></a><o:p></o:p><=
/span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><div><div style=3D'border:none;border-top:solid =
#E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=A2=BC=FE=C8=CB<span =
lang=3DEN-US>:</span></span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> Hannes Tschofenig [mailto:Hannes.Tschofenig@arm.com] =
<br></span><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=A2=CB=CD=CA=B1=BC=E4<span =
lang=3DEN-US>:</span></span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> 2017</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=C4=EA<span lang=3DEN-US>2</span>=D4=C2<span =
lang=3DEN-US>22</span>=C8=D5<span lang=3DEN-US> =
17:16<br></span><b>=CA=D5=BC=FE=C8=CB<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> </span>=B7=BD=C7=BF<span =
lang=3DEN-US>(</span>=C7=BF=CE=E5<span lang=3DEN-US>) =
&lt;qiangwu.fq@alibaba-inc.com&gt;; 'teep@ietf.org' =
&lt;teep@ietf.org&gt;<br></span><b>=D6=F7=CC=E2<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> RE: [Teep] Open Trust =
Protocol &amp; CBOR encoding<o:p></o:p></span></span></p></div></div><p =
class=3DMsoNormal><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB style=3D'color:#1F497D'>Thanks for =
the quick response, Adam. <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB style=3D'color:#1F497D'>Is it fair =
to assume that you are going to submit the draft in time for this IETF =
draft submission deadline? <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB style=3D'color:#1F497D'>Can you say =
something about the use case you had in mind in the IoT environment? I =
always tend to make a differentiation between Cortex A class processor =
and M-class processors. While there are IoT devices out there that use A =
class processors the majority are, however, using M-class processors due =
to their lower price tag, and lower energy consumption. =
<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'>Ciao<br>Hannes<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'>From:</span></b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'> </span><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;mso-fareast-language:Z=
H-CN'>=B7=BD=C7=BF</span><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'>(</span><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;mso-fareast-language:Z=
H-CN'>=C7=BF=CE=E5</span><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'>) [<a =
href=3D"mailto:qiangwu.fq@alibaba-inc.com">mailto:qiangwu.fq@alibaba-inc.=
com</a>] <br><b>Sent:</b> 22 February 2017 10:08<br><b>To:</b> Hannes =
Tschofenig; <a =
href=3D"mailto:teep@ietf.org">teep@ietf.org</a><br><b>Subject:</b> =
</span><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;mso-fareast-language:Z=
H-CN'>=B4=F0=B8=B4</span><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'>: [Teep] Open Trust Protocol &amp; CBOR =
encoding<o:p></o:p></span></p></div></div><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Hi,</=
span><span lang=3DEN-US> </span><span lang=3DEN-GB>Hannes and =
all,<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB style=3D'mso-fareast-language:ZH-CN'>I want to share some =
ideas about CBOR.<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB =
style=3D'mso-fareast-language:ZH-CN'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'mso-fareast-language:ZH-CN'>CBOR is very suitable for use in =
the scenario of IoT area , &nbsp;and because &nbsp;CBOR is based on the =
wildly successful JSON data model: numbers, strings, arrays, maps =
(called objects in JSON), and a few values such as false, true, and =
null, implement of &nbsp;the switch between the Json and Cbor should not =
be particularly difficult. We have already started writing a draft in =
Cbor.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Regar=
ds,<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Adam =
<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>--<o:=
p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Aliba=
ba<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><a =
href=3D"mailto:Qiangwu.fq@alibaba-inc.com"><span =
style=3D'color:#0563C1'>Qiangwu.fq@alibaba-inc.com</span></a><o:p></o:p><=
/span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><div><div style=3D'border:none;border-top:solid =
#E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=A2=BC=FE=C8=CB</span></b><b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>:</span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> Hannes Tschofenig [<a =
href=3D"mailto:Hannes.Tschofenig@arm.com">mailto:Hannes.Tschofenig@arm.co=
m</a>] <br></span><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=A2=CB=CD=CA=B1=BC=E4</span></b><b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>:</span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> 2017</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=C4=EA</span><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>2</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=D4=C2</span><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>22</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=C8=D5</span><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> 16:16<br></span><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=CA=D5=BC=FE=C8=CB</span></b><b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>:</span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> 'teep@ietf.org' &lt;<a =
href=3D"mailto:teep@ietf.org">teep@ietf.org</a>&gt;<br></span><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=D6=F7=CC=E2</span></b><b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>:</span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> [Teep] Open Trust Protocol &amp; CBOR =
encoding<o:p></o:p></span></p></div></div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>Hi all, <o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>Ned Smith (from Intel) privately asked me whether we had =
considered using a CBOR encoding during the design of the protocol. =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>I thought it was a good question and so I wanted to share =
my view about the topic with others on the list. =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>CBOR clearly has benefits compared to JSON. However, the =
main use cases focused on the smart phone/tablet environment and JSON is =
more widely used by developers. I believe this was the reason for =
re-using JSON and the already mature JOSE security work. When it comes =
to code availability COSE (the CBOR security work) is far, far behind =
JOSE. Since the security components require more implementation time I =
think it is fair to consider them as well. <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB>Ned suggested to separate the =
information model from the actual encoding to later be able to switch to =
a different encoding easily. I like that idea and I think we should do =
that. <o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>What do others think? <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB>Ciao<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB>Hannes<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'font-size:12.0pt;font-family:"Times New =
Roman",serif;mso-fareast-language:ZH-CN'>IMPORTANT NOTICE: The contents =
of this email and any attachments are confidential and may also be =
privileged. If you are not the intended recipient, please notify the =
sender immediately and do not disclose the contents to any other person, =
use it for any purpose, or store or copy the information in any medium. =
Thank you. <o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5;mso-fareast-language:Z=
H-CN'>IMPORTANT NOTICE: The contents of this email and any attachments =
are confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you. =
<o:p></o:p></span></p></div></body></html>
------=_NextPart_000_0024_01D28D33.3981EBB0--


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Subject: Re: [Teep] Open Trust Protocol & CBOR encoding
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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Hi Adam, <o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks for your respon=
se. <o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">I suspect you are focu=
sing on the A class devices with CBOR encoding that are using bandwidth con=
strained connectivity.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Ciao<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Hannes<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">PS: For ARMv6-M/v7-M c=
lass devices there is no TrustZone support. Hence, the open trust protocol =
wouldn=A1=AFt be particularly useful there and better alternatives exist.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">&nbsp;<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
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;;mso-fareast-language:ZH=
-CN">From:</span></b><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-fa=
mily:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">
</span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font-family:SimSun;ms=
o-fareast-language:ZH-CN">=B7=BD=C7=BF</span><span lang=3D"EN-US" style=3D"=
font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-=
fareast-language:ZH-CN">(</span><span lang=3D"ZH-CN" style=3D"font-size:10.=
0pt;font-family:SimSun;mso-fareast-language:ZH-CN">=C7=BF=CE=E5</span><span=
 lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&q=
uot;sans-serif&quot;;mso-fareast-language:ZH-CN">)
 [mailto:qiangwu.fq@alibaba-inc.com] <br>
<b>Sent:</b> 22 February 2017 10:44<br>
<b>To:</b> Hannes Tschofenig; teep@ietf.org<br>
<b>Subject:</b> </span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font-=
family:SimSun;mso-fareast-language:ZH-CN">=B4=F0=B8=B4</span><span lang=3D"=
EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-=
serif&quot;;mso-fareast-language:ZH-CN">: [Teep] Open Trust Protocol &amp;
 CBOR encoding<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" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">Hi, Hannes<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">For the first question, my answer is: =
yes, we are going to submit the draft in time for this IETF draft submissio=
n deadline.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">For the second question, I would like =
to share my view below:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Cortex</span><span lan=
g=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH=
-CN"> A is usually used in some of better scalability (such as with large o=
ff-line storage) equipment, these devices
 include: mobile phones, unmanned aerial vehicles.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">The use of
</span><span style=3D"color:#1F497D">Cortex</span><span style=3D"font-size:=
10.5pt;color:#1F497D;mso-fareast-language:ZH-CN">
</span><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-far=
east-language:ZH-CN">M on embedded devices is very extensive, and these dev=
ices have very limited CPU and memory resources (total memory may only be 1=
M), these devices include: Smart bracelet,
 industrial control devices on the car, and other smart home devices withou=
t screens . In these scenarios, in order to be able to save resources, the =
use of binary programs is very necessary.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Adam
<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">--<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Alibaba<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN"><a href=3D"mailto:Qiangwu.fq@alibaba-inc.com"><span sty=
le=3D"color:#0563C1">Qiangwu.fq@alibaba-inc.com</span></a><o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;M=
icrosoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=
=A2=BC=FE=C8=CB</span></b><b><span lang=3D"EN-US" style=3D"font-family:&quo=
t;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=
:</span></b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">
 Hannes Tschofenig [<a href=3D"mailto:Hannes.Tschofenig@arm.com">mailto:Han=
nes.Tschofenig@arm.com</a>]
<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=A2=CB=CD=CA=B1=
=BC=E4</span></b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microso=
ft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span><=
/b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&q=
uot;sans-serif&quot;;mso-fareast-language:ZH-CN">
 2017</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=C4=EA</span><spa=
n lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:ZH-CN">2</span><span lang=3D"ZH-CN" styl=
e=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-far=
east-language:ZH-CN">=D4=C2</span><span lang=3D"EN-US" style=3D"font-family=
:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH=
-CN">22</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaH=
ei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=C8=D5</span><s=
pan lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;s=
ans-serif&quot;;mso-fareast-language:ZH-CN">
 17:16<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=CA=D5=BC=FE=C8=CB<=
/span></b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHe=
i&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span></b><spa=
n lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:ZH-CN">
</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&quot=
;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=BD=C7=BF</span><sp=
an lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sa=
ns-serif&quot;;mso-fareast-language:ZH-CN">(</span><span lang=3D"ZH-CN" sty=
le=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fa=
reast-language:ZH-CN">=C7=BF=CE=E5</span><span lang=3D"EN-US" style=3D"font=
-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-lang=
uage:ZH-CN">)
 &lt;<a href=3D"mailto:qiangwu.fq@alibaba-inc.com">qiangwu.fq@alibaba-inc.c=
om</a>&gt;; 'teep@ietf.org' &lt;<a href=3D"mailto:teep@ietf.org">teep@ietf.=
org</a>&gt;<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=D6=F7=CC=E2</span>=
</b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot=
;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span></b><span lang=
=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-seri=
f&quot;;mso-fareast-language:ZH-CN">
 RE: [Teep] Open Trust Protocol &amp; CBOR encoding<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks for the quick r=
esponse, Adam.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Is it fair to assume t=
hat you are going to submit the draft in time for this IETF draft submissio=
n deadline?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Can you say something =
about the use case you had in mind in the IoT environment? I always tend to=
 make a differentiation between Cortex A class processor and M-class proces=
sors. While there are IoT devices out
 there that use A class processors the majority are, however, using M-class=
 processors due to their lower price tag, and lower energy consumption.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Ciao<br>
Hannes<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
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;;mso-fareast-language:ZH=
-CN">From:</span></b><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-fa=
mily:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">
</span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font-family:SimSun;ms=
o-fareast-language:ZH-CN">=B7=BD=C7=BF</span><span lang=3D"EN-US" style=3D"=
font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-=
fareast-language:ZH-CN">(</span><span lang=3D"ZH-CN" style=3D"font-size:10.=
0pt;font-family:SimSun;mso-fareast-language:ZH-CN">=C7=BF=CE=E5</span><span=
 lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&q=
uot;sans-serif&quot;;mso-fareast-language:ZH-CN">)
 [<a href=3D"mailto:qiangwu.fq@alibaba-inc.com">mailto:qiangwu.fq@alibaba-i=
nc.com</a>]
<br>
<b>Sent:</b> 22 February 2017 10:08<br>
<b>To:</b> Hannes Tschofenig; <a href=3D"mailto:teep@ietf.org">teep@ietf.or=
g</a><br>
<b>Subject:</b> </span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font-=
family:SimSun;mso-fareast-language:ZH-CN">=B4=F0=B8=B4</span><span lang=3D"=
EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-=
serif&quot;;mso-fareast-language:ZH-CN">: [Teep] Open Trust Protocol &amp;
 CBOR encoding<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" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">Hi,</span><span lang=3D"EN-US">
</span>Hannes and all,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">I want to=
 share some ideas about CBOR.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">CBOR is v=
ery suitable for use in the scenario of IoT area , &nbsp;and because &nbsp;=
CBOR is based on the wildly successful JSON data model: numbers, strings, a=
rrays, maps (called objects in JSON), and a few
 values such as false, true, and null, implement of &nbsp;the switch betwee=
n the Json and Cbor should not be particularly difficult. We have already s=
tarted writing a draft in Cbor.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:#1F497D;mso-fa=
reast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Adam
<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">--<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Alibaba<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN"><a href=3D"mailto:Qiangwu.fq@alibaba-inc.com"><span sty=
le=3D"color:#0563C1">Qiangwu.fq@alibaba-inc.com</span></a><o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;M=
icrosoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=
=A2=BC=FE=C8=CB</span></b><b><span lang=3D"EN-US" style=3D"font-family:&quo=
t;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=
:</span></b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">
 Hannes Tschofenig [<a href=3D"mailto:Hannes.Tschofenig@arm.com">mailto:Han=
nes.Tschofenig@arm.com</a>]
<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=A2=CB=CD=CA=B1=
=BC=E4</span></b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microso=
ft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span><=
/b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&q=
uot;sans-serif&quot;;mso-fareast-language:ZH-CN">
 2017</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=C4=EA</span><spa=
n lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:ZH-CN">2</span><span lang=3D"ZH-CN" styl=
e=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-far=
east-language:ZH-CN">=D4=C2</span><span lang=3D"EN-US" style=3D"font-family=
:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH=
-CN">22</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaH=
ei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=C8=D5</span><s=
pan lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;s=
ans-serif&quot;;mso-fareast-language:ZH-CN">
 16:16<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=CA=D5=BC=FE=C8=CB<=
/span></b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHe=
i&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span></b><spa=
n lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:ZH-CN">
 'teep@ietf.org' &lt;<a href=3D"mailto:teep@ietf.org">teep@ietf.org</a>&gt;=
<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=D6=F7=CC=E2</span>=
</b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot=
;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span></b><span lang=
=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-seri=
f&quot;;mso-fareast-language:ZH-CN">
 [Teep] Open Trust Protocol &amp; CBOR encoding<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal">Hi all, <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ned Smith (from Intel) privately asked me whether we=
 had considered using a CBOR encoding during the design of the protocol.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I thought it was a good question and so I wanted to =
share my view about the topic with others on the list.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">CBOR clearly has benefits compared to JSON. However,=
 the main use cases focused on the smart phone/tablet environment and JSON =
is more widely used by developers. I believe this was the reason for re-usi=
ng JSON and the already mature JOSE
 security work. When it comes to code availability COSE (the CBOR security =
work) is far, far behind JOSE. Since the security components require more i=
mplementation time I think it is fair to consider them as well.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ned suggested to separate the information model from=
 the actual encoding to later be able to switch to a different encoding eas=
ily. I like that idea and I think we should do that.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">What do others think? <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ciao<o:p></o:p></p>
<p class=3D"MsoNormal">Hannes<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;mso-fareast-language:ZH-CN">IMPORTANT=
 NOTICE: The contents of this email and any attachments are confidential an=
d may also be privileged. If you are not the intended recipient,
 please notify the sender immediately and do not disclose the contents to a=
ny other person, use it for any purpose, or store or copy the information i=
n any medium. Thank you.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:SimSun;m=
so-fareast-language:ZH-CN">IMPORTANT NOTICE: The contents of this email and=
 any attachments are confidential and may also be privileged. If you are no=
t the intended recipient, please notify
 the sender immediately and do not disclose the contents to any other perso=
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Thank you.
<o:p></o:p></span></p>
</div>
IMPORTANT NOTICE: The contents of this email and any attachments are confid=
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From: Nick Cook <Nick.Cook@intercede.com>
To: "'teep@ietf.org'" <teep@ietf.org>
Thread-Topic: [Teep] Open Trust Protocol & CBOR encoding
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Subject: Re: [Teep] Open Trust Protocol & CBOR encoding
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From: Nick Cook <Nick.Cook@intercede.com>
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Thread-Topic: [Teep] Open Trust Protocol & CBOR encoding
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Subject: Re: [Teep] Open Trust Protocol & CBOR encoding
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From: "=?GBK?B?t73HvyjHv87lKQ==?=" <qiangwu.fq@alibaba-inc.com>
To: "'Hannes Tschofenig'" <Hannes.Tschofenig@arm.com>, <teep@ietf.org>
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Date: Wed, 22 Feb 2017 18:44:10 +0800
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Hi, Hannes

=20

Thanks for your response.=20

=20

My view is that the use of Cbor should depend on whether the device
resources are limited. The resources mentioned here include storage
resources and communication bandwidth and so on.

=20

BTW, because ARM V8M class has begun to support TrustZone , whether will
there be a new requirement for updating TA in binary in this area? .

=20

=20

Regards,

=20

Adam=20

--

Alibaba

 <mailto:Qiangwu.fq@alibaba-inc.com> Qiangwu.fq@alibaba-inc.com

=20

=20

=20

=B7=A2=BC=FE=C8=CB: Hannes Tschofenig [mailto:Hannes.Tschofenig@arm.com] =

=B7=A2=CB=CD=CA=B1=BC=E4: 2017=C4=EA2=D4=C222=C8=D5 17:51
=CA=D5=BC=FE=C8=CB: =B7=BD=C7=BF(=C7=BF=CE=E5) =
<qiangwu.fq@alibaba-inc.com>; 'teep@ietf.org' <teep@ietf.
org>
=D6=F7=CC=E2: RE: [Teep] Open Trust Protocol & CBOR encoding

=20

Hi Adam,=20

=20

Thanks for your response.=20

=20

I suspect you are focusing on the A class devices with CBOR encoding =
that
are using bandwidth constrained connectivity.=20

=20

Ciao

Hannes

=20

PS: For ARMv6-M/v7-M class devices there is no TrustZone support. Hence, =
the
open trust protocol wouldn=A1=AFt be particularly useful there and =
better
alternatives exist.=20

=20

=20

From: =B7=BD=C7=BF(=C7=BF=CE=E5) [mailto:qiangwu.fq@alibaba-inc.com]=20
Sent: 22 February 2017 10:44
To: Hannes Tschofenig; teep@ietf.org <mailto:teep@ietf.org>=20
Subject: =B4=F0=B8=B4: [Teep] Open Trust Protocol & CBOR encoding

=20

Hi, Hannes

=20

For the first question, my answer is: yes, we are going to submit the =
draft
in time for this IETF draft submission deadline.

=20

For the second question, I would like to share my view below:

=20

Cortex A is usually used in some of better scalability (such as with =
large
off-line storage) equipment, these devices include: mobile phones, =
unmanned
aerial vehicles.

=20

The use of Cortex M on embedded devices is very extensive, and these =
devices
have very limited CPU and memory resources (total memory may only be =
1M),
these devices include: Smart bracelet, industrial control devices on the
car, and other smart home devices without screens . In these scenarios, =
in
order to be able to save resources, the use of binary programs is very
necessary.

=20

=20

Regards,

=20

Adam=20

--

Alibaba

 <mailto:Qiangwu.fq@alibaba-inc.com> Qiangwu.fq@alibaba-inc.com

=20

=20

=B7=A2=BC=FE=C8=CB: Hannes Tschofenig [mailto:Hannes.Tschofenig@arm.com] =

=B7=A2=CB=CD=CA=B1=BC=E4: 2017=C4=EA2=D4=C222=C8=D5 17:16
=CA=D5=BC=FE=C8=CB: =B7=BD=C7=BF(=C7=BF=CE=E5) =
<qiangwu.fq@alibaba-inc.com
<mailto:qiangwu.fq@alibaba-inc.com> >; 'teep@ietf.org' <teep@ietf.org
<mailto:teep@ietf.org> >
=D6=F7=CC=E2: RE: [Teep] Open Trust Protocol & CBOR encoding

=20

Thanks for the quick response, Adam.=20

=20

Is it fair to assume that you are going to submit the draft in time for =
this
IETF draft submission deadline?=20

=20

Can you say something about the use case you had in mind in the IoT
environment? I always tend to make a differentiation between Cortex A =
class
processor and M-class processors. While there are IoT devices out there =
that
use A class processors the majority are, however, using M-class =
processors
due to their lower price tag, and lower energy consumption.=20

=20

Ciao
Hannes

=20

From: =B7=BD=C7=BF(=C7=BF=CE=E5) [mailto:qiangwu.fq@alibaba-inc.com]=20
Sent: 22 February 2017 10:08
To: Hannes Tschofenig; teep@ietf.org <mailto:teep@ietf.org>=20
Subject: =B4=F0=B8=B4: [Teep] Open Trust Protocol & CBOR encoding

=20

Hi, Hannes and all,

=20

I want to share some ideas about CBOR.

=20

CBOR is very suitable for use in the scenario of IoT area ,  and because
CBOR is based on the wildly successful JSON data model: numbers, =
strings,
arrays, maps (called objects in JSON), and a few values such as false, =
true,
and null, implement of  the switch between the Json and Cbor should not =
be
particularly difficult. We have already started writing a draft in Cbor.

=20

=20

=20

Regards,

=20

Adam=20

--

Alibaba

 <mailto:Qiangwu.fq@alibaba-inc.com> Qiangwu.fq@alibaba-inc.com

=20

=20

=B7=A2=BC=FE=C8=CB: Hannes Tschofenig [mailto:Hannes.Tschofenig@arm.com] =

=B7=A2=CB=CD=CA=B1=BC=E4: 2017=C4=EA2=D4=C222=C8=D5 16:16
=CA=D5=BC=FE=C8=CB: 'teep@ietf.org' <teep@ietf.org =
<mailto:teep@ietf.org> >
=D6=F7=CC=E2: [Teep] Open Trust Protocol & CBOR encoding

=20

Hi all,=20

=20

Ned Smith (from Intel) privately asked me whether we had considered =
using a
CBOR encoding during the design of the protocol.=20

=20

I thought it was a good question and so I wanted to share my view about =
the
topic with others on the list.=20

=20

CBOR clearly has benefits compared to JSON. However, the main use cases
focused on the smart phone/tablet environment and JSON is more widely =
used
by developers. I believe this was the reason for re-using JSON and the
already mature JOSE security work. When it comes to code availability =
COSE
(the CBOR security work) is far, far behind JOSE. Since the security
components require more implementation time I think it is fair to =
consider
them as well.=20

=20

Ned suggested to separate the information model from the actual encoding =
to
later be able to switch to a different encoding easily. I like that idea =
and
I think we should do that.=20

=20

What do others think?=20

=20

Ciao

Hannes

=20

IMPORTANT NOTICE: The contents of this email and any attachments are
confidential and may also be privileged. If you are not the intended
recipient, please notify the sender immediately and do not disclose the
contents to any other person, use it for any purpose, or store or copy =
the
information in any medium. Thank you.=20

IMPORTANT NOTICE: The contents of this email and any attachments are
confidential and may also be privileged. If you are not the intended
recipient, please notify the sender immediately and do not disclose the
contents to any other person, use it for any purpose, or store or copy =
the
information in any medium. Thank you.=20

IMPORTANT NOTICE: The contents of this email and any attachments are
confidential and may also be privileged. If you are not the intended
recipient, please notify the sender immediately and do not disclose the
contents to any other person, use it for any purpose, or store or copy =
the
information in any medium. Thank you.=20


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</o:shapelayout></xml><![endif]--></head><body lang=3DZH-CN link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Hi, =
Hannes<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'>Thanks for your response. =
<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>My =
view is that the use of Cbor should depend on whether the device =
resources are limited. The resources mentioned here include storage =
resources and communication bandwidth and so on.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>BTW, =
because ARM V8M class has begun to support TrustZone , whether will =
there be a new requirement for updating TA in binary in this area? =
.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Regar=
ds,<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Adam =
<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>--<o:=
p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Aliba=
ba<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><a =
href=3D"mailto:Qiangwu.fq@alibaba-inc.com"><span =
style=3D'color:#0563C1'>Qiangwu.fq@alibaba-inc.com</span></a><o:p></o:p><=
/span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><div><div style=3D'border:none;border-top:solid =
#E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=A2=BC=FE=C8=CB<span =
lang=3DEN-US>:</span></span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> Hannes Tschofenig [mailto:Hannes.Tschofenig@arm.com] =
<br></span><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=A2=CB=CD=CA=B1=BC=E4<span =
lang=3DEN-US>:</span></span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> 2017</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=C4=EA<span lang=3DEN-US>2</span>=D4=C2<span =
lang=3DEN-US>22</span>=C8=D5<span lang=3DEN-US> =
17:51<br></span><b>=CA=D5=BC=FE=C8=CB<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> </span>=B7=BD=C7=BF<span =
lang=3DEN-US>(</span>=C7=BF=CE=E5<span lang=3DEN-US>) =
&lt;qiangwu.fq@alibaba-inc.com&gt;; 'teep@ietf.org' =
&lt;teep@ietf.org&gt;<br></span><b>=D6=F7=CC=E2<span =
lang=3DEN-US>:</span></b><span lang=3DEN-US> RE: [Teep] Open Trust =
Protocol &amp; CBOR encoding<o:p></o:p></span></span></p></div></div><p =
class=3DMsoNormal><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB style=3D'color:#1F497D'>Hi Adam, =
<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB style=3D'color:#1F497D'>Thanks for =
your response. <o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB style=3D'color:#1F497D'>I suspect =
you are focusing on the A class devices with CBOR encoding that are =
using bandwidth constrained connectivity. <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'>Ciao<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'>Hannes<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB style=3D'color:#1F497D'>PS: For =
ARMv6-M/v7-M class devices there is no TrustZone support. Hence, the =
open trust protocol wouldn=A1=AFt be particularly useful there and =
better alternatives exist. <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'>&nbsp;<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'>From:</span></b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'> </span><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;mso-fareast-language:Z=
H-CN'>=B7=BD=C7=BF</span><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'>(</span><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;mso-fareast-language:Z=
H-CN'>=C7=BF=CE=E5</span><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'>) [<a =
href=3D"mailto:qiangwu.fq@alibaba-inc.com">mailto:qiangwu.fq@alibaba-inc.=
com</a>] <br><b>Sent:</b> 22 February 2017 10:44<br><b>To:</b> Hannes =
Tschofenig; <a =
href=3D"mailto:teep@ietf.org">teep@ietf.org</a><br><b>Subject:</b> =
</span><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;mso-fareast-language:Z=
H-CN'>=B4=F0=B8=B4</span><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'>: [Teep] Open Trust Protocol &amp; CBOR =
encoding<o:p></o:p></span></p></div></div><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Hi, =
Hannes<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>For =
the first question, my answer is: yes, we are going to submit the draft =
in time for this IETF draft submission deadline.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>For =
the second question, I would like to share my view =
below:<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'>Cortex</span><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'> A =
is usually used in some of better scalability (such as with large =
off-line storage) equipment, these devices include: mobile phones, =
unmanned aerial vehicles.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>The =
use of </span><span lang=3DEN-GB =
style=3D'color:#1F497D'>Cortex</span><span lang=3DEN-GB =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'> =
</span><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>M on =
embedded devices is very extensive, and these devices have very limited =
CPU and memory resources (total memory may only be 1M), these devices =
include: Smart bracelet, industrial control devices on the car, and =
other smart home devices without screens . In these scenarios, in order =
to be able to save resources, the use of binary programs is very =
necessary.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Regar=
ds,<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Adam =
<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>--<o:=
p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Aliba=
ba<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><a =
href=3D"mailto:Qiangwu.fq@alibaba-inc.com"><span =
style=3D'color:#0563C1'>Qiangwu.fq@alibaba-inc.com</span></a><o:p></o:p><=
/span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><div><div style=3D'border:none;border-top:solid =
#E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=A2=BC=FE=C8=CB</span></b><b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>:</span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> Hannes Tschofenig [<a =
href=3D"mailto:Hannes.Tschofenig@arm.com">mailto:Hannes.Tschofenig@arm.co=
m</a>] <br></span><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=A2=CB=CD=CA=B1=BC=E4</span></b><b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>:</span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> 2017</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=C4=EA</span><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>2</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=D4=C2</span><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>22</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=C8=D5</span><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> 17:16<br></span><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=CA=D5=BC=FE=C8=CB</span></b><b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>:</span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> </span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=BD=C7=BF</span><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>(</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=C7=BF=CE=E5</span><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>) &lt;<a =
href=3D"mailto:qiangwu.fq@alibaba-inc.com">qiangwu.fq@alibaba-inc.com</a>=
&gt;; 'teep@ietf.org' &lt;<a =
href=3D"mailto:teep@ietf.org">teep@ietf.org</a>&gt;<br></span><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=D6=F7=CC=E2</span></b><b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>:</span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> RE: [Teep] Open Trust Protocol &amp; CBOR =
encoding<o:p></o:p></span></p></div></div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB style=3D'color:#1F497D'>Thanks for the quick response, =
Adam. <o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB style=3D'color:#1F497D'>Is it fair =
to assume that you are going to submit the draft in time for this IETF =
draft submission deadline? <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB style=3D'color:#1F497D'>Can you say =
something about the use case you had in mind in the IoT environment? I =
always tend to make a differentiation between Cortex A class processor =
and M-class processors. While there are IoT devices out there that use A =
class processors the majority are, however, using M-class processors due =
to their lower price tag, and lower energy consumption. =
<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'>Ciao<br>Hannes<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'color:#1F497D'><o:p>&nbsp;</o:p></span></p><div><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'>From:</span></b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'> </span><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;mso-fareast-language:Z=
H-CN'>=B7=BD=C7=BF</span><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'>(</span><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;mso-fareast-language:Z=
H-CN'>=C7=BF=CE=E5</span><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'>) [<a =
href=3D"mailto:qiangwu.fq@alibaba-inc.com">mailto:qiangwu.fq@alibaba-inc.=
com</a>] <br><b>Sent:</b> 22 February 2017 10:08<br><b>To:</b> Hannes =
Tschofenig; <a =
href=3D"mailto:teep@ietf.org">teep@ietf.org</a><br><b>Subject:</b> =
</span><span =
style=3D'font-size:10.0pt;font-family:=CB=CE=CC=E5;mso-fareast-language:Z=
H-CN'>=B4=F0=B8=B4</span><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma",sans-serif;mso-fareast-lan=
guage:ZH-CN'>: [Teep] Open Trust Protocol &amp; CBOR =
encoding<o:p></o:p></span></p></div></div><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Hi,</=
span><span lang=3DEN-US> </span><span lang=3DEN-GB>Hannes and =
all,<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB style=3D'mso-fareast-language:ZH-CN'>I want to share some =
ideas about CBOR.<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB =
style=3D'mso-fareast-language:ZH-CN'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'mso-fareast-language:ZH-CN'>CBOR is very suitable for use in =
the scenario of IoT area , &nbsp;and because &nbsp;CBOR is based on the =
wildly successful JSON data model: numbers, strings, arrays, maps =
(called objects in JSON), and a few values such as false, true, and =
null, implement of &nbsp;the switch between the Json and Cbor should not =
be particularly difficult. We have already started writing a draft in =
Cbor.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Regar=
ds,<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Adam =
<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>--<o:=
p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'>Aliba=
ba<o:p></o:p></span></p><p class=3DMsoNormal =
style=3D'text-align:justify;text-justify:inter-ideograph'><span =
lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><a =
href=3D"mailto:Qiangwu.fq@alibaba-inc.com"><span =
style=3D'color:#0563C1'>Qiangwu.fq@alibaba-inc.com</span></a><o:p></o:p><=
/span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH-CN'><o:p>=
&nbsp;</o:p></span></p><div><div style=3D'border:none;border-top:solid =
#E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=A2=BC=FE=C8=CB</span></b><b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>:</span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> Hannes Tschofenig [<a =
href=3D"mailto:Hannes.Tschofenig@arm.com">mailto:Hannes.Tschofenig@arm.co=
m</a>] <br></span><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=B7=A2=CB=CD=CA=B1=BC=E4</span></b><b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>:</span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> 2017</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=C4=EA</span><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>2</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=D4=C2</span><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>22</span><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=C8=D5</span><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> 16:16<br></span><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=CA=D5=BC=FE=C8=CB</span></b><b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>:</span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> 'teep@ietf.org' &lt;<a =
href=3D"mailto:teep@ietf.org">teep@ietf.org</a>&gt;<br></span><b><span =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>=D6=F7=CC=E2</span></b><b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'>:</span></b><span lang=3DEN-US =
style=3D'font-family:"=CE=A2=C8=ED=D1=C5=BA=DA",sans-serif;mso-fareast-la=
nguage:ZH-CN'> [Teep] Open Trust Protocol &amp; CBOR =
encoding<o:p></o:p></span></p></div></div><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>Hi all, <o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>Ned Smith (from Intel) privately asked me whether we had =
considered using a CBOR encoding during the design of the protocol. =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>I thought it was a good question and so I wanted to share =
my view about the topic with others on the list. =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>CBOR clearly has benefits compared to JSON. However, the =
main use cases focused on the smart phone/tablet environment and JSON is =
more widely used by developers. I believe this was the reason for =
re-using JSON and the already mature JOSE security work. When it comes =
to code availability COSE (the CBOR security work) is far, far behind =
JOSE. Since the security components require more implementation time I =
think it is fair to consider them as well. <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB>Ned suggested to separate the =
information model from the actual encoding to later be able to switch to =
a different encoding easily. I like that idea and I think we should do =
that. <o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-GB>What do others think? <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB>Ciao<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB>Hannes<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'font-size:12.0pt;font-family:"Times New =
Roman",serif;mso-fareast-language:ZH-CN'>IMPORTANT NOTICE: The contents =
of this email and any attachments are confidential and may also be =
privileged. If you are not the intended recipient, please notify the =
sender immediately and do not disclose the contents to any other person, =
use it for any purpose, or store or copy the information in any medium. =
Thank you. <o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5;mso-fareast-language:Z=
H-CN'>IMPORTANT NOTICE: The contents of this email and any attachments =
are confidential and may also be privileged. If you are not the intended =
recipient, please notify the sender immediately and do not disclose the =
contents to any other person, use it for any purpose, or store or copy =
the information in any medium. Thank you. <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-GB =
style=3D'font-size:12.0pt;font-family:=CB=CE=CC=E5;mso-fareast-language:Z=
H-CN'>IMPORTANT NOTICE: The contents of this email and any attachments =
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<o:p></o:p></span></p></div></body></html>
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
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Thread-Topic: [Teep] Open Trust Protocol & CBOR encoding
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<body lang=3D"EN-GB" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Hi Adam, <o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">For devices that are c=
onnected using WiFi or 3G, like mobile phones and tablets, I don=A1=AFt see=
 a reason of using CBOR/COSE. The developer convenience provided by JSON/JO=
SE is a much bigger advantage there. If you
 are, however, thinking about using some of the low power radio technologie=
s then the story is indeed different.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Regarding TrustZone fo=
r v8-M I believe the story is different to TrustZone for A-class devices. I=
 personally believe that solutions, like LwM2M, are more suitable for use w=
ith v8-M devices. Here are my reasons:
<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:20.5pt;text-indent:-18.0=
pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"font-family:Symbol;color:#1F497D"><span=
 style=3D"mso-list:Ignore">=A1=A4<span style=3D"font:7.0pt &quot;Times New =
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">These devices =
are not expected to run two operating systems, like A-class TrustZone devic=
es would do. In a smart phone you would have, for example, Android running =
in the normal world and some RTOS
 running in the secure world. Android has its own concept of software updat=
es and security concept and in the secure world the Open Trust Protocol (or=
 proprietary protocols today) would fulfil the same purpose. There is no re=
ason for a device supporting TrustZone
 for v8-M to run two separate credential and software update mechanisms. If=
 there is only one then the design can be much simpler, like LwM2M since yo=
u do not necessarily need some special application layer protocol.
<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:20.5pt;text-indent:-18.0=
pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"font-family:Symbol;color:#1F497D"><span=
 style=3D"mso-list:Ignore">=A1=A4<span style=3D"font:7.0pt &quot;Times New =
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">The software f=
or these devices is typically put together by a single company. There are n=
o =A1=B0apps=A1=B1 downloaded and installed from different sources. The cod=
e that runs in the secure world is small and
 the programmer model is just very different than in A-class devices. As su=
ch, there is also no concept of security domains. Needless to say that you =
then also need to manage those security domains using a protocol like the O=
pen Trust Protocol either.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Of course, this is jus=
t my expectation since at this point TrustZone for v8-M only runs in a simu=
lator (for example in the Keil MDK IDE) or on a FPGA. So, there is just not=
 enough experience with it.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Ciao<br>
Hannes<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
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;;mso-fareast-language:ZH=
-CN">From:</span></b><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-fa=
mily:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">
</span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font-family:SimSun;ms=
o-fareast-language:ZH-CN">=B7=BD=C7=BF</span><span lang=3D"EN-US" style=3D"=
font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-=
fareast-language:ZH-CN">(</span><span lang=3D"ZH-CN" style=3D"font-size:10.=
0pt;font-family:SimSun;mso-fareast-language:ZH-CN">=C7=BF=CE=E5</span><span=
 lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&q=
uot;sans-serif&quot;;mso-fareast-language:ZH-CN">)
 [mailto:qiangwu.fq@alibaba-inc.com] <br>
<b>Sent:</b> 22 February 2017 11:44<br>
<b>To:</b> Hannes Tschofenig; teep@ietf.org<br>
<b>Subject:</b> </span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font-=
family:SimSun;mso-fareast-language:ZH-CN">=B4=F0=B8=B4</span><span lang=3D"=
EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-=
serif&quot;;mso-fareast-language:ZH-CN">: [Teep] Open Trust Protocol &amp;
 CBOR encoding<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" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">Hi, Hannes<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks for your respon=
se. <o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:#1F497D;mso-fa=
reast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">My view is that the use of Cbor should=
 depend on whether the device resources are limited. The resources mentione=
d here include storage resources and communication
 bandwidth and so on.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">BTW, because ARM V8M class has begun t=
o support TrustZone , whether will there be a new requirement for updating =
TA in binary in this area? .<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Adam
<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">--<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Alibaba<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN"><a href=3D"mailto:Qiangwu.fq@alibaba-inc.com"><span sty=
le=3D"color:#0563C1">Qiangwu.fq@alibaba-inc.com</span></a><o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;M=
icrosoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=
=A2=BC=FE=C8=CB</span></b><b><span lang=3D"EN-US" style=3D"font-family:&quo=
t;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=
:</span></b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">
 Hannes Tschofenig [<a href=3D"mailto:Hannes.Tschofenig@arm.com">mailto:Han=
nes.Tschofenig@arm.com</a>]
<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=A2=CB=CD=CA=B1=
=BC=E4</span></b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microso=
ft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span><=
/b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&q=
uot;sans-serif&quot;;mso-fareast-language:ZH-CN">
 2017</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=C4=EA</span><spa=
n lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:ZH-CN">2</span><span lang=3D"ZH-CN" styl=
e=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-far=
east-language:ZH-CN">=D4=C2</span><span lang=3D"EN-US" style=3D"font-family=
:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH=
-CN">22</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaH=
ei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=C8=D5</span><s=
pan lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;s=
ans-serif&quot;;mso-fareast-language:ZH-CN">
 17:51<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=CA=D5=BC=FE=C8=CB<=
/span></b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHe=
i&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span></b><spa=
n lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:ZH-CN">
</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&quot=
;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=BD=C7=BF</span><sp=
an lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sa=
ns-serif&quot;;mso-fareast-language:ZH-CN">(</span><span lang=3D"ZH-CN" sty=
le=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fa=
reast-language:ZH-CN">=C7=BF=CE=E5</span><span lang=3D"EN-US" style=3D"font=
-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-lang=
uage:ZH-CN">)
 &lt;<a href=3D"mailto:qiangwu.fq@alibaba-inc.com">qiangwu.fq@alibaba-inc.c=
om</a>&gt;; 'teep@ietf.org' &lt;<a href=3D"mailto:teep@ietf.org">teep@ietf.=
org</a>&gt;<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=D6=F7=CC=E2</span>=
</b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot=
;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span></b><span lang=
=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-seri=
f&quot;;mso-fareast-language:ZH-CN">
 RE: [Teep] Open Trust Protocol &amp; CBOR encoding<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Hi Adam, <o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks for your respon=
se. <o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">I suspect you are focu=
sing on the A class devices with CBOR encoding that are using bandwidth con=
strained connectivity.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Ciao<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Hannes<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">PS: For ARMv6-M/v7-M c=
lass devices there is no TrustZone support. Hence, the open trust protocol =
wouldn=A1=AFt be particularly useful there and better alternatives exist.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">&nbsp;<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
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;;mso-fareast-language:ZH=
-CN">From:</span></b><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-fa=
mily:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">
</span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font-family:SimSun;ms=
o-fareast-language:ZH-CN">=B7=BD=C7=BF</span><span lang=3D"EN-US" style=3D"=
font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-=
fareast-language:ZH-CN">(</span><span lang=3D"ZH-CN" style=3D"font-size:10.=
0pt;font-family:SimSun;mso-fareast-language:ZH-CN">=C7=BF=CE=E5</span><span=
 lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&q=
uot;sans-serif&quot;;mso-fareast-language:ZH-CN">)
 [<a href=3D"mailto:qiangwu.fq@alibaba-inc.com">mailto:qiangwu.fq@alibaba-i=
nc.com</a>]
<br>
<b>Sent:</b> 22 February 2017 10:44<br>
<b>To:</b> Hannes Tschofenig; <a href=3D"mailto:teep@ietf.org">teep@ietf.or=
g</a><br>
<b>Subject:</b> </span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font-=
family:SimSun;mso-fareast-language:ZH-CN">=B4=F0=B8=B4</span><span lang=3D"=
EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-=
serif&quot;;mso-fareast-language:ZH-CN">: [Teep] Open Trust Protocol &amp;
 CBOR encoding<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" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">Hi, Hannes<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">For the first question, my answer is: =
yes, we are going to submit the draft in time for this IETF draft submissio=
n deadline.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">For the second question, I would like =
to share my view below:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Cortex</span><span lan=
g=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fareast-language:ZH=
-CN"> A is usually used in some of better scalability (such as with large o=
ff-line storage) equipment, these devices
 include: mobile phones, unmanned aerial vehicles.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">The use of
</span><span style=3D"color:#1F497D">Cortex</span><span style=3D"font-size:=
10.5pt;color:#1F497D;mso-fareast-language:ZH-CN">
</span><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-far=
east-language:ZH-CN">M on embedded devices is very extensive, and these dev=
ices have very limited CPU and memory resources (total memory may only be 1=
M), these devices include: Smart bracelet,
 industrial control devices on the car, and other smart home devices withou=
t screens . In these scenarios, in order to be able to save resources, the =
use of binary programs is very necessary.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Adam
<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">--<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Alibaba<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN"><a href=3D"mailto:Qiangwu.fq@alibaba-inc.com"><span sty=
le=3D"color:#0563C1">Qiangwu.fq@alibaba-inc.com</span></a><o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;M=
icrosoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=
=A2=BC=FE=C8=CB</span></b><b><span lang=3D"EN-US" style=3D"font-family:&quo=
t;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=
:</span></b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">
 Hannes Tschofenig [<a href=3D"mailto:Hannes.Tschofenig@arm.com">mailto:Han=
nes.Tschofenig@arm.com</a>]
<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=A2=CB=CD=CA=B1=
=BC=E4</span></b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microso=
ft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span><=
/b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&q=
uot;sans-serif&quot;;mso-fareast-language:ZH-CN">
 2017</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=C4=EA</span><spa=
n lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:ZH-CN">2</span><span lang=3D"ZH-CN" styl=
e=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-far=
east-language:ZH-CN">=D4=C2</span><span lang=3D"EN-US" style=3D"font-family=
:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH=
-CN">22</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaH=
ei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=C8=D5</span><s=
pan lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;s=
ans-serif&quot;;mso-fareast-language:ZH-CN">
 17:16<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=CA=D5=BC=FE=C8=CB<=
/span></b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHe=
i&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span></b><spa=
n lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:ZH-CN">
</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&quot=
;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=BD=C7=BF</span><sp=
an lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sa=
ns-serif&quot;;mso-fareast-language:ZH-CN">(</span><span lang=3D"ZH-CN" sty=
le=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fa=
reast-language:ZH-CN">=C7=BF=CE=E5</span><span lang=3D"EN-US" style=3D"font=
-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-lang=
uage:ZH-CN">)
 &lt;<a href=3D"mailto:qiangwu.fq@alibaba-inc.com">qiangwu.fq@alibaba-inc.c=
om</a>&gt;; 'teep@ietf.org' &lt;<a href=3D"mailto:teep@ietf.org">teep@ietf.=
org</a>&gt;<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=D6=F7=CC=E2</span>=
</b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot=
;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span></b><span lang=
=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-seri=
f&quot;;mso-fareast-language:ZH-CN">
 RE: [Teep] Open Trust Protocol &amp; CBOR encoding<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks for the quick r=
esponse, Adam.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Is it fair to assume t=
hat you are going to submit the draft in time for this IETF draft submissio=
n deadline?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Can you say something =
about the use case you had in mind in the IoT environment? I always tend to=
 make a differentiation between Cortex A class processor and M-class proces=
sors. While there are IoT devices out
 there that use A class processors the majority are, however, using M-class=
 processors due to their lower price tag, and lower energy consumption.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Ciao<br>
Hannes<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
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;;mso-fareast-language:ZH=
-CN">From:</span></b><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-fa=
mily:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">
</span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font-family:SimSun;ms=
o-fareast-language:ZH-CN">=B7=BD=C7=BF</span><span lang=3D"EN-US" style=3D"=
font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;mso-=
fareast-language:ZH-CN">(</span><span lang=3D"ZH-CN" style=3D"font-size:10.=
0pt;font-family:SimSun;mso-fareast-language:ZH-CN">=C7=BF=CE=E5</span><span=
 lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&q=
uot;sans-serif&quot;;mso-fareast-language:ZH-CN">)
 [<a href=3D"mailto:qiangwu.fq@alibaba-inc.com">mailto:qiangwu.fq@alibaba-i=
nc.com</a>]
<br>
<b>Sent:</b> 22 February 2017 10:08<br>
<b>To:</b> Hannes Tschofenig; <a href=3D"mailto:teep@ietf.org">teep@ietf.or=
g</a><br>
<b>Subject:</b> </span><span lang=3D"ZH-CN" style=3D"font-size:10.0pt;font-=
family:SimSun;mso-fareast-language:ZH-CN">=B4=F0=B8=B4</span><span lang=3D"=
EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-=
serif&quot;;mso-fareast-language:ZH-CN">: [Teep] Open Trust Protocol &amp;
 CBOR encoding<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" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN">Hi,</span><span lang=3D"EN-US">
</span>Hannes and all,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">I want to=
 share some ideas about CBOR.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN"><o:p>&nbs=
p;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"mso-fareast-language:ZH-CN">CBOR is v=
ery suitable for use in the scenario of IoT area , &nbsp;and because &nbsp;=
CBOR is based on the wildly successful JSON data model: numbers, strings, a=
rrays, maps (called objects in JSON), and a few
 values such as false, true, and null, implement of &nbsp;the switch betwee=
n the Json and Cbor should not be particularly difficult. We have already s=
tarted writing a draft in Cbor.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:#1F497D;mso-fa=
reast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Adam
<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">--<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN">Alibaba<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"text-align:justify;text-justify:inter-ideog=
raph"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color:#1F497D;mso-fare=
ast-language:ZH-CN"><a href=3D"mailto:Qiangwu.fq@alibaba-inc.com"><span sty=
le=3D"color:#0563C1">Qiangwu.fq@alibaba-inc.com</span></a><o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.5pt;color=
:#1F497D;mso-fareast-language:ZH-CN"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;M=
icrosoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=
=A2=BC=FE=C8=CB</span></b><b><span lang=3D"EN-US" style=3D"font-family:&quo=
t;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=
:</span></b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">
 Hannes Tschofenig [<a href=3D"mailto:Hannes.Tschofenig@arm.com">mailto:Han=
nes.Tschofenig@arm.com</a>]
<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=B7=A2=CB=CD=CA=B1=
=BC=E4</span></b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microso=
ft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span><=
/b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&q=
uot;sans-serif&quot;;mso-fareast-language:ZH-CN">
 2017</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei=
&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=C4=EA</span><spa=
n lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:ZH-CN">2</span><span lang=3D"ZH-CN" styl=
e=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-far=
east-language:ZH-CN">=D4=C2</span><span lang=3D"EN-US" style=3D"font-family=
:&quot;Microsoft YaHei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH=
-CN">22</span><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaH=
ei&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=C8=D5</span><s=
pan lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;s=
ans-serif&quot;;mso-fareast-language:ZH-CN">
 16:16<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=CA=D5=BC=FE=C8=CB<=
/span></b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHe=
i&quot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span></b><spa=
n lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;san=
s-serif&quot;;mso-fareast-language:ZH-CN">
 'teep@ietf.org' &lt;<a href=3D"mailto:teep@ietf.org">teep@ietf.org</a>&gt;=
<br>
</span><b><span lang=3D"ZH-CN" style=3D"font-family:&quot;Microsoft YaHei&q=
uot;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">=D6=F7=CC=E2</span>=
</b><b><span lang=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot=
;,&quot;sans-serif&quot;;mso-fareast-language:ZH-CN">:</span></b><span lang=
=3D"EN-US" style=3D"font-family:&quot;Microsoft YaHei&quot;,&quot;sans-seri=
f&quot;;mso-fareast-language:ZH-CN">
 [Teep] Open Trust Protocol &amp; CBOR encoding<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal">Hi all, <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ned Smith (from Intel) privately asked me whether we=
 had considered using a CBOR encoding during the design of the protocol.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I thought it was a good question and so I wanted to =
share my view about the topic with others on the list.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">CBOR clearly has benefits compared to JSON. However,=
 the main use cases focused on the smart phone/tablet environment and JSON =
is more widely used by developers. I believe this was the reason for re-usi=
ng JSON and the already mature JOSE
 security work. When it comes to code availability COSE (the CBOR security =
work) is far, far behind JOSE. Since the security components require more i=
mplementation time I think it is fair to consider them as well.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ned suggested to separate the information model from=
 the actual encoding to later be able to switch to a different encoding eas=
ily. I like that idea and I think we should do that.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">What do others think? <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ciao<o:p></o:p></p>
<p class=3D"MsoNormal">Hannes<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;mso-fareast-language:ZH-CN">IMPORTANT=
 NOTICE: The contents of this email and any attachments are confidential an=
d may also be privileged. If you are not the intended recipient,
 please notify the sender immediately and do not disclose the contents to a=
ny other person, use it for any purpose, or store or copy the information i=
n any medium. Thank you.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:SimSun;m=
so-fareast-language:ZH-CN">IMPORTANT NOTICE: The contents of this email and=
 any attachments are confidential and may also be privileged. If you are no=
t the intended recipient, please notify
 the sender immediately and do not disclose the contents to any other perso=
n, use it for any purpose, or store or copy the information in any medium. =
Thank you.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:SimSun;m=
so-fareast-language:ZH-CN">IMPORTANT NOTICE: The contents of this email and=
 any attachments are confidential and may also be privileged. If you are no=
t the intended recipient, please notify
 the sender immediately and do not disclose the contents to any other perso=
n, use it for any purpose, or store or copy the information in any medium. =
Thank you.
<o:p></o:p></span></p>
</div>
IMPORTANT NOTICE: The contents of this email and any attachments are confid=
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From: Mingliang Pei <Mingliang_Pei@symantec.com>
To: "teep@ietf.org" <teep@ietf.org>
Thread-Topic: Batch trust management support for OEM case
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Subject: [Teep] Batch trust management support for OEM case
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--_000_D4D4D78E2D04Amingliangpeisymanteccom_
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

Hi All,

I received an inquiry from Xishun from Beanpod Technology whether we can su=
pport a batch mode case. The use case is that some OEM may want to provisio=
n TA into many devices they know with the same device key (for privacy and =
batch validation purpose). A TAM may issue one OTrP message to create SD an=
d install the TA and send to many devices without requiring each device to =
submit their own device attestation. The batch support will reduce the load=
 on the service side (TAM).

This looks to be an interesting case to me. We have baseline case for mutua=
l trust establishment of one device at a time to a TAM, and use device info=
rmation to ensure idempotency if multiple messages are delivered to the sam=
e device out of order from a TAM.

How do you think about the support of this?

Thanks,

Ming


--_000_D4D4D78E2D04Amingliangpeisymanteccom_
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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
>
</head>
<body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-lin=
e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>Hi All,</div>
<div><br>
</div>
<div>I received an inquiry from Xishun from Beanpod Technology whether we c=
an support a batch mode case. The use case is that some OEM may want to pro=
vision TA into many devices they know with the same device key (for privacy=
 and batch validation purpose).
 A TAM may issue one OTrP message to create SD and install the TA and send =
to many devices without requiring each device to submit their own device at=
testation. The batch support will reduce the load on the service side (TAM)=
.</div>
<div><br>
</div>
<div>This looks to be an interesting case to me. We have baseline case for =
mutual trust establishment of one device at a time to a TAM, and use device=
 information to ensure idempotency if multiple messages are delivered to th=
e same device out of order from
 a TAM.</div>
<div><br>
</div>
<div>How do you think about the support of this?</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Ming</div>
<div><br>
</div>
</body>
</html>

--_000_D4D4D78E2D04Amingliangpeisymanteccom_--


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From: Nick Cook <Nick.Cook@intercede.com>
To: Mingliang Pei <Mingliang_Pei@symantec.com>, "teep@ietf.org" <teep@ietf.org>
Thread-Topic: [Teep] Batch trust management support for OEM case
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Archived-At: <https://mailarchive.ietf.org/arch/msg/teep/9EL6g2TpwnKl19vG2D8XD8xknmk>
Subject: Re: [Teep] Batch trust management support for OEM case
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: "'teep@ietf.org'" <teep@ietf.org>
Thread-Topic: Preliminary Agenda for the IETF Meeting
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Archived-At: <https://mailarchive.ietf.org/arch/msg/teep/1RUbswaurmSulfZ3tQ32IMls49E>
Subject: [Teep] Preliminary Agenda for the IETF Meeting
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FYI: you can find the preliminary agenda for the upcoming IETF meeting at:
https://datatracker.ietf.org/meeting/98/agenda.html

The TEEP BOF is scheduled for Tuesday, from 14:50-16:20.

Ciao
Hannes

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From: Mingliang Pei <Mingliang_Pei@symantec.com>
To: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
Thread-Topic: [Teep] Preliminary Agenda for the IETF Meeting
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Subject: Re: [Teep] Preliminary Agenda for the IETF Meeting
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Great, look forward to the meeting, Ming

Sent from iPhone

> On Feb 27, 2017, at 11:46 PM, Hannes Tschofenig <Hannes.Tschofenig@arm.co=
m> wrote:
>=20
> FYI: you can find the preliminary agenda for the upcoming IETF meeting at=
:
> https://datatracker.ietf.org/meeting/98/agenda.html
>=20
> The TEEP BOF is scheduled for Tuesday, from 14:50-16:20.
>=20
> Ciao
> Hannes
>=20
> IMPORTANT NOTICE: The contents of this email and any attachments are conf=
idential and may also be privileged. If you are not the intended recipient,=
 please notify the sender immediately and do not disclose the contents to a=
ny other person, use it for any purpose, or store or copy the information i=
n any medium. Thank you.
>=20
> _______________________________________________
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: "teep@ietf.org" <teep@ietf.org>
Thread-Topic: TEEP BOF Discussion
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Date: Tue, 28 Feb 2017 11:09:09 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/teep/2bV6gw9wA33xcKBesMd8z1NA38I>
Subject: [Teep] TEEP BOF Discussion
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To prepare for the BOF we will schedule three conference calls.
Everyone is welcome to join.
-- Do not delete or change any of the following text. --


Join WebEx meeting<https://arm-onsite.webex.com/arm-onsite/j.php?MTID=3Dm43=
2c69738718f2f188014216d835ee8f>
Meeting number (access code): 806 493 499
Meeting password: ApKdnEfa


Join by phone
1-408-792-6300 Call-in toll number (US/Canada)
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Global call-in numbers<https://arm-onsite.webex.com/arm-onsite/globalcallin=
.php?serviceType=3DMC&ED=3D544010197&tollFree=3D1>  |  Toll-free calling re=
strictions<https://www.webex.com/pdf/tollfree_restrictions.pdf>

Can't join the meeting?<https://help.webex.com/docs/DOC-5412>

If you are a host, go here<https://arm-onsite.webex.com/arm-onsite/j.php?MT=
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IMPORTANT NOTICE: Please note that this WebEx service allows audio and othe=
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to such recordings. If you do not consent to being recorded, discuss your c=
oncerns with the host or do not join the session.

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

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<font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt;">
<div>To prepare for the BOF we will schedule three conference calls. </div>
<div>Everyone is welcome to join. <font face=3D"Segoe UI">&nbsp; <br>

</font><font face=3D"Segoe UI" size=3D"2" color=3D"#A0A0A0"><span style=3D"=
font-size:10pt;">-</span></font><a name=3D"WBX57DFF"></a>- Do not delete or=
 change any of the following text. --<font face=3D"Segoe UI" size=3D"2"><sp=
an style=3D"font-size:10pt;"> &nbsp;
<br>

&nbsp; <br>

&nbsp; <br>

</span></font><a href=3D"https://arm-onsite.webex.com/arm-onsite/j.php?MTID=
=3Dm432c69738718f2f188014216d835ee8f"><font face=3D"Segoe UI" size=3D"4" co=
lor=3D"#00AFF9"><span style=3D"font-size:13.5pt;"><u>Join WebEx meeting</u>=
</span></font></a><font face=3D"Segoe UI" size=3D"4"><span style=3D"font-si=
ze:13.5pt;">
&nbsp; <br>

</span></font><font face=3D"Segoe UI" size=3D"2" color=3D"#666666"><span st=
yle=3D"font-size:10pt;">Meeting number (access code): 806 493 499</span></f=
ont><font face=3D"Segoe UI" size=3D"4"><span style=3D"font-size:13.5pt;">
<br>

</span></font><font face=3D"Segoe UI" size=3D"2" color=3D"#666666"><span st=
yle=3D"font-size:10pt;">Meeting password: ApKdnEfa&nbsp;
<br>

</span></font><font face=3D"Segoe UI" size=3D"2"><span style=3D"font-size:1=
0pt;">&nbsp; <br>

<br>

</span></font><font face=3D"Segoe UI" size=3D"4" color=3D"#666666"><span st=
yle=3D"font-size:13.5pt;">Join by phone</span></font><font face=3D"Segoe UI=
" size=3D"4"><span style=3D"font-size:13.5pt;">&nbsp;
<br>

</span></font><font face=3D"Segoe UI" size=3D"2" color=3D"#666666"><span st=
yle=3D"font-size:10pt;"><b>1-408-792-6300</b></span></font><font face=3D"Se=
goe UI" size=3D"2" color=3D"#666666"><span style=3D"font-size:10pt;">&nbsp;=
Call-in toll number (US/Canada)</span></font><font face=3D"Segoe UI" size=
=3D"4"><span style=3D"font-size:13.5pt;">&nbsp;
<br>

</span></font><font face=3D"Segoe UI" size=3D"2" color=3D"#666666"><span st=
yle=3D"font-size:10pt;"><b>1-877-668-4490</b></span></font><font face=3D"Se=
goe UI" size=3D"2" color=3D"#666666"><span style=3D"font-size:10pt;">&nbsp;=
Call-in toll-free number (US/Canada)</span></font><font face=3D"Segoe UI" s=
ize=3D"4"><span style=3D"font-size:13.5pt;">&nbsp;
<br>

</span></font><a href=3D"https://arm-onsite.webex.com/arm-onsite/globalcall=
in.php?serviceType=3DMC&amp;ED=3D544010197&amp;tollFree=3D1"><font face=3D"=
Segoe UI" size=3D"2" color=3D"#00AFF9"><span style=3D"font-size:10pt;"><u>G=
lobal call-in numbers</u></span></font></a><font face=3D"Segoe UI" size=3D"=
2"><span style=3D"font-size:10pt;">&nbsp;&nbsp;|&nbsp;&nbsp;</span></font><=
a href=3D"https://www.webex.com/pdf/tollfree_restrictions.pdf"><font face=
=3D"Segoe UI" size=3D"2" color=3D"#00AFF9"><span style=3D"font-size:10pt;">=
<u>Toll-free
calling restrictions</u></span></font></a><font face=3D"Segoe UI" size=3D"4=
"><span style=3D"font-size:13.5pt;"> &nbsp;
<br>

</span></font><font face=3D"Segoe UI" size=3D"2"><span style=3D"font-size:1=
0pt;">&nbsp; <br>

</span></font><a href=3D"https://help.webex.com/docs/DOC-5412"><font face=
=3D"Segoe UI" size=3D"2" color=3D"#00AFF9"><span style=3D"font-size:10pt;">=
<u>Can't join the meeting?</u></span></font></a><font face=3D"Segoe UI" siz=
e=3D"2"><span style=3D"font-size:10pt;">
<br>

&nbsp; <br>

</span></font><font face=3D"Segoe UI" size=3D"2" color=3D"#666666"><span st=
yle=3D"font-size:10pt;">If you are a host, </span></font><a href=3D"https:/=
/arm-onsite.webex.com/arm-onsite/j.php?MTID=3Dm630d06de710a3891ec222ce000ca=
5989"><font face=3D"Segoe UI" size=3D"2" color=3D"#00AFF9"><span style=3D"f=
ont-size:10pt;"><u>go
here</u></span></font></a><font face=3D"Segoe UI" size=3D"2" color=3D"#6666=
66"><span style=3D"font-size:10pt;"> to view host information.<br>

<br>

</span></font><font face=3D"Segoe UI" size=3D"1" color=3D"#A0A0A0"><span st=
yle=3D"font-size:7.5pt;">IMPORTANT NOTICE: Please note that this WebEx serv=
ice allows audio and other information sent during the session to be record=
ed, which may be discoverable in a legal
matter. By joining this session, you automatically consent to such recordin=
gs. If you do not consent to being recorded, discuss your concerns with the=
 host or do not join the session.</span></font><font face=3D"Segoe UI" size=
=3D"2"><span style=3D"font-size:10pt;">
</span></font></div>
<div>&nbsp;</div>
<div><font face=3D"Times New Roman" size=3D"3"><span style=3D"font-size:12p=
t;">IMPORTANT NOTICE: The contents of this email and any attachments are co=
nfidential and may also be privileged. If you are not the intended recipien=
t, please notify the sender immediately
and do not disclose the contents to any other person, use it for any purpos=
e, or store or copy the information in any medium. Thank you. </span></font=
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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: "teep@ietf.org" <teep@ietf.org>
Thread-Topic: Re-sending TEEP BOF Discussion Conference Call Info
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Subject: [Teep] Re-sending TEEP BOF Discussion Conference Call Info
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Hi all,

I was told that the meeting invite I distributed earlier was a bit garbled.=
 Here is another try.

There are three conference calls:

Call #1: March 1st, 10pm PST =3D 7am CET =3D 2pm CST
Call #2: March 8th, 10pm PST =3D 7am CET =3D 2pm CST
Call #3: March 15th, 10pm PST =3D 7am CET =3D 2pm CST

Webex Link:
https://arm-onsite.webex.com/arm-onsite/j.php?MTID=3Dm432c69738718f2f188014=
216d835ee8f

Meeting number (access code): 806 493 499
Meeting password: ApKdnEfa

You may want to use VoIP but there is also the option to dial in via phone.=
 The dial-in numbers are:
+1-408-792-6300 Call-in toll number (US/Canada)
+1-877-668-4490 Call-in toll-free number (US/Canada)

Additional dial-in numbers:
https://arm-onsite.webex.com/arm-onsite/globalcallin.php?serviceType=3DMC&E=
D=3D544010197&tollFree=3D1

Ciao
Hannes

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

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<div class=3D"WordSection1">
<p class=3D"MsoNormal">Hi all, <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I was told that the meeting invite I distributed ear=
lier was a bit garbled. Here is another try.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">There are three conference calls: <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Call #1: March 1st, 10pm PST =3D 7am CET =3D 2pm CST=
 <o:p></o:p></p>
<p class=3D"MsoNormal">Call #2: March 8th, 10pm PST =3D 7am CET =3D 2pm CST=
 <o:p></o:p></p>
<p class=3D"MsoNormal">Call #3: March 15th, 10pm PST =3D 7am CET =3D 2pm CS=
T <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Webex Link: <o:p></o:p></p>
<p class=3D"MsoNormal">https://arm-onsite.webex.com/arm-onsite/j.php?MTID=
=3Dm432c69738718f2f188014216d835ee8f<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Meeting number (access code): 806 493 499 <o:p></o:p=
></p>
<p class=3D"MsoNormal">Meeting password: ApKdnEfa&nbsp; <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">You may want to use VoIP but there is also the optio=
n to dial in via phone. The dial-in numbers are:&nbsp;
<o:p></o:p></p>
<p class=3D"MsoNormal">&#43;1-408-792-6300 Call-in toll number (US/Canada)&=
nbsp; <o:p></o:p></p>
<p class=3D"MsoNormal">&#43;1-877-668-4490 Call-in toll-free number (US/Can=
ada)&nbsp; <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Additional dial-in numbers: <o:p></o:p></p>
<p class=3D"MsoNormal">https://arm-onsite.webex.com/arm-onsite/globalcallin=
.php?serviceType=3DMC&amp;ED=3D544010197&amp;tollFree=3D1<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Ciao<o:p></o:p></p>
<p class=3D"MsoNormal">Hannes<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></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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Hi Hannes,

2PM CST doesn't makes sense as that's 1AM EST, it should say 12PM CST, corre=
ct?

That's rough timing for me. =20

Kathleen=20

Please excuse typos, sent from handheld device=20

> On Feb 28, 2017, at 9:50 AM, Hannes Tschofenig <Hannes.Tschofenig@arm.com>=
 wrote:
>=20
> Hi all,
> =20
> I was told that the meeting invite I distributed earlier was a bit garbled=
. Here is another try.
> =20
> There are three conference calls:
> =20
> Call #1: March 1st, 10pm PST =3D 7am CET =3D 2pm CST
> Call #2: March 8th, 10pm PST =3D 7am CET =3D 2pm CST
> Call #3: March 15th, 10pm PST =3D 7am CET =3D 2pm CST
> =20
> Webex Link:
> https://arm-onsite.webex.com/arm-onsite/j.php?MTID=3Dm432c69738718f2f18801=
4216d835ee8f
> =20
> Meeting number (access code): 806 493 499
> Meeting password: ApKdnEfa=20
> =20
> You may want to use VoIP but there is also the option to dial in via phone=
. The dial-in numbers are:=20
> +1-408-792-6300 Call-in toll number (US/Canada)=20
> +1-877-668-4490 Call-in toll-free number (US/Canada)=20
> =20
> Additional dial-in numbers:
> https://arm-onsite.webex.com/arm-onsite/globalcallin.php?serviceType=3DMC&=
ED=3D544010197&tollFree=3D1
> =20
> Ciao
> Hannes
> =20
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> _______________________________________________
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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Hi Hannes,</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">2PM CST doesn't makes sense as that's 1AM EST, it should say 12PM CST, correct?</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">That's rough timing for me. &nbsp;</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Kathleen&nbsp;<br><br>Please excuse typos, sent from handheld device&nbsp;</div><div><br>On Feb 28, 2017, at 9:50 AM, Hannes Tschofenig &lt;<a href="mailto:Hannes.Tschofenig@arm.com">Hannes.Tschofenig@arm.com</a>&gt; wrote:<br><br></div><blockquote type="cite"><div>

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<div class="WordSection1">
<p class="MsoNormal">Hi all, <o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">I was told that the meeting invite I distributed earlier was a bit garbled. Here is another try.<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">There are three conference calls: <o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">Call #1: March 1st, 10pm PST = 7am CET = 2pm CST <o:p></o:p></p>
<p class="MsoNormal">Call #2: March 8th, 10pm PST = 7am CET = 2pm CST <o:p></o:p></p>
<p class="MsoNormal">Call #3: March 15th, 10pm PST = 7am CET = 2pm CST <o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">Webex Link: <o:p></o:p></p>
<p class="MsoNormal"><a href="https://arm-onsite.webex.com/arm-onsite/j.php?MTID=m432c69738718f2f188014216d835ee8f">https://arm-onsite.webex.com/arm-onsite/j.php?MTID=m432c69738718f2f188014216d835ee8f</a><o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">Meeting number (access code): 806 493 499 <o:p></o:p></p>
<p class="MsoNormal">Meeting password: ApKdnEfa&nbsp; <o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">You may want to use VoIP but there is also the option to dial in via phone. The dial-in numbers are:&nbsp;
<o:p></o:p></p>
<p class="MsoNormal">+1-408-792-6300 Call-in toll number (US/Canada)&nbsp; <o:p></o:p></p>
<p class="MsoNormal">+1-877-668-4490 Call-in toll-free number (US/Canada)&nbsp; <o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">Additional dial-in numbers: <o:p></o:p></p>
<p class="MsoNormal"><a href="https://arm-onsite.webex.com/arm-onsite/globalcallin.php?serviceType=MC&amp;ED=544010197&amp;tollFree=1">https://arm-onsite.webex.com/arm-onsite/globalcallin.php?serviceType=MC&amp;ED=544010197&amp;tollFree=1</a><o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
<p class="MsoNormal">Ciao<o:p></o:p></p>
<p class="MsoNormal">Hannes<o:p></o:p></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose,
 or store or copy the information in any medium. Thank you.


</div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>TEEP mailing list</span><br><span><a href="mailto:TEEP@ietf.org">TEEP@ietf.org</a></span><br><span><a href="https://www.ietf.org/mailman/listinfo/teep">https://www.ietf.org/mailman/listinfo/teep</a></span><br></div></blockquote></body></html>
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Hannes Tschofenig <Hannes.Tschofenig@arm.com> wrote:
    > I was told that the meeting invite I distributed earlier was a bit
    > garbled. Here is another try.

    > There are three conference calls:

    > Call #1: March 1st, 10pm PST = 7am CET = 2pm CST
    > Call #2: March 8th, 10pm PST = 7am CET = 2pm CST
    > Call #3: March 15th, 10pm PST = 7am CET = 2pm CST

But, those 10pm PST are the day before, I think.
(i.e. TONIGHT. CST is I think China standard Time here, not Central)


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




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From: Hannes Tschofenig <Hannes.Tschofenig@arm.com>
To: Michael Richardson <mcr+ietf@sandelman.ca>
Thread-Topic: [Teep] Re-sending TEEP BOF Discussion Conference Call Info
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Subject: Re: [Teep] Re-sending TEEP BOF Discussion Conference Call Info
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That's correct, Michael. CST is China Standard Time. Maybe I shouldn't have=
 used abbreviations.

Ciao
Hannes

-----Original Message-----
From: Michael Richardson [mailto:mcr+ietf@sandelman.ca]
Sent: 28 February 2017 16:29
To: Hannes Tschofenig
Cc: teep@ietf.org
Subject: Re: [Teep] Re-sending TEEP BOF Discussion Conference Call Info


Hannes Tschofenig <Hannes.Tschofenig@arm.com> wrote:
    > I was told that the meeting invite I distributed earlier was a bit
    > garbled. Here is another try.

    > There are three conference calls:

    > Call #1: March 1st, 10pm PST =3D 7am CET =3D 2pm CST
    > Call #2: March 8th, 10pm PST =3D 7am CET =3D 2pm CST
    > Call #3: March 15th, 10pm PST =3D 7am CET =3D 2pm CST

But, those 10pm PST are the day before, I think.
(i.e. TONIGHT. CST is I think China standard Time here, not Central)


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



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To: Michael Richardson <mcr+ietf@sandelman.ca>
Archived-At: <https://mailarchive.ietf.org/arch/msg/teep/JO0jdYZa1K_61INH1Xmoa3fP7-Q>
Cc: Hannes Tschofenig <Hannes.Tschofenig@arm.com>, "teep@ietf.org" <teep@ietf.org>
Subject: Re: [Teep] Re-sending TEEP BOF Discussion Conference Call Info
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Please excuse typos, sent from handheld device=20

> On Feb 28, 2017, at 10:28 AM, Michael Richardson <mcr+ietf@sandelman.ca> w=
rote:
>=20
>=20
> Hannes Tschofenig <Hannes.Tschofenig@arm.com> wrote:
>> I was told that the meeting invite I distributed earlier was a bit
>> garbled. Here is another try.
>=20
>> There are three conference calls:
>=20
>> Call #1: March 1st, 10pm PST =3D 7am CET =3D 2pm CST
>> Call #2: March 8th, 10pm PST =3D 7am CET =3D 2pm CST
>> Call #3: March 15th, 10pm PST =3D 7am CET =3D 2pm CST
>=20
> But, those 10pm PST are the day before, I think.
> (i.e. TONIGHT. CST is I think China standard Time here, not Central)

That makes more sense.  I assumed incorrectly the acronyms wouldn't overlap.=


Thank you,
Kathleen=20
>=20
>=20
> --
> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
> -=3D IPv6 IoT consulting =3D-
>=20
>=20
>=20
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