[COSE] Epoch markers

Thomas Fossati <thomas.fossati@linaro.org> Thu, 18 April 2024 09:54 UTC

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From: Thomas Fossati <thomas.fossati@linaro.org>
Date: Thu, 18 Apr 2024 11:54:09 +0200
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Subject: [COSE] Epoch markers
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Dear COSE enthusiasts,

At IETF 118, we asked the RATS WG to adopt
draft-birkholz-epoch-markers [1].  There was some discussion about
scope [2]:

> Dave noted that the discussion at the last IETF meeting indicated that this work should be done in the COSE working group. Have you asked the COSE working group?

The I-D makes use of COSE_Sign1 & is specifying a vehicle for an
extensible list of freshness indicators (see Section 10 in RFC9334
[3]), such as timestamps, nonces, monotonically increasing counters,
etc. Does it make more sense to continue the work as a COSE WG item
(because the Epoch Marker is a COSE structure) or in the RATS WG
(because Epoch Markers are about freshness epochs)?

Cordiali Saluti,
Viele Grüße,
Thomas & Henk

[1] https://datatracker.ietf.org/doc/draft-birkholz-epoch-markers
[2] https://datatracker.ietf.org/doc/minutes-118-rats-202311080830/
[3] https://www.rfc-editor.org/rfc/rfc9334.html#name-freshness