Telechat Review of draft-ietf-cose-tsa-tst-header-parameter-05
review-ietf-cose-tsa-tst-header-parameter-05-iotdir-telechat-melnikov-2025-04-30-00

Request Review of draft-ietf-cose-tsa-tst-header-parameter
Requested revision No specific revision (document currently at 08)
Type Telechat Review
Team Internet of Things Directorate (iotdir)
Deadline 2025-04-30
Requested 2025-04-14
Requested by Éric Vyncke
Authors Henk Birkholz , Thomas Fossati , Maik Riechert
I-D last updated 2026-02-26 (Latest revision 2025-08-29)
Completed reviews Artart IETF Last Call review of -03 by Shuping Peng (diff)
Opsdir IETF Last Call review of -03 by Yingzhen Qu (diff)
Genart IETF Last Call review of -03 by Linda Dunbar (diff)
Secdir Telechat review of -04 by Stefan Santesson (diff)
Secdir Telechat review of -05 by Stefan Santesson (diff)
Iotdir Telechat review of -05 by Alexey Melnikov (diff)
Secdir Telechat review of -06 by Stefan Santesson (diff)
Assignment Reviewer Alexey Melnikov
State Completed
Request Telechat review on draft-ietf-cose-tsa-tst-header-parameter by Internet of Things Directorate Assigned
Posted at https://mailarchive.ietf.org/arch/msg/iot-directorate/9C4LPe_nJTNyvoVvxzE0kIvs6jI
Reviewed revision 05 (document currently at 08)
Result Ready
Completed 2025-04-30
review-ietf-cose-tsa-tst-header-parameter-05-iotdir-telechat-melnikov-2025-04-30-00
Hi,

I am the assigned IoT-Directorate reviewer for this draft.

Summary: Ready.

This document defines two CBOR Signing And Encrypted (COSE) header
parameters for incorporating RFC 3161-based timestamping into COSE
message structures (COSE_Sign and COSE_Sign1).  This enables the use
of established RFC 3161 timestamping infrastructure to prove the
creation time of a message.

While I think it might be a bit of an ask for an IoT implementation
to implement both COSE based processing and X.509 based processing,
if the IoT implementation has code for both, this would be a reasonable
way to combine them.

I think the document is well written and clear.