[6lo] AP-ND 22

"Pascal Thubert (pthubert)" <pthubert@cisco.com> Fri, 24 April 2020 13:54 UTC

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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Benjamin Kaduk <kaduk@mit.edu>, Rene Struik <rstruik.ext@gmail.com>, Mohit Sethi <mohit.m.sethi@ericsson.com>
CC: "6lo-chairs@ietf.org" <6lo-chairs@ietf.org>, "Shwetha Bhandari (shwethab)" <shwethab@cisco.com>, Jim Schaad <ietf@augustcellars.com>, Erik Kline <ek@loon.com>, "6lo@ietf.org" <6lo@ietf.org>
Thread-Topic: AP-ND 22
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Date: Fri, 24 Apr 2020 13:54:03 +0000
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Subject: [6lo] AP-ND 22
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Hello Benjamin (and 6lo)

We are soliciting your help on AP ND for hopefully the last time, about the last step, that was supposed to be the IANA section that was missing for JOSE and Crypto Type 2.

Rene worked quite a bit with Jim and the conclusion that I made from that is that the formats that we already discussed in appendix B (SEC1) were better suited than JOSE (or COSE) and avoided both the registry issue and gaps in the existing specifications.

We had a conversation yesterday with our AD (Erik) and Shepherd (Shwetha) and we agreed to give a try at using those formats for -22. The conclusion that it looked OK but we need a validation that the new key and signature formats do not alter the security of the spec.

So there we go; 20 being the version that made it through IESG, and 21 the increments that you already reviewed and provides encoding agility, please find the proposed 22 attached and the diff between the proposed 22 and either 20 or 21.

The main diffs from 21 are
 - the removal of JWK,
 - a discussion on brown field that basically indicates that a back level 6LR constitutes a breach in the perimeter, meaning that all 6LRs need to be upgraded.
 - the J flag from 21 is gone, since we dropped JWK and dismissed the idea of operating AP ND in a brown field.

Can you please have a look and validate that we did OK?

Many, many thanks for all your help throughout!

Pascal, Rene and Mohit


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Pascal Thubert
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pthubert@cisco.com<mailto:pthubert@cisco.com>
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