COSE WG, I have updated the individual draft referenced below based on the feedback so far. For the explanatory updates I think the new text is more clear about what is meant and about which sections some statements belong in. Part of this update adds truncated MAC tags, as suggested, which align with the strengths of existing registered MAC algorithms.
With these changes, and from comments received so far, I think this draft is ready for an adoption call. Thanks for the support so far! Brian S. ---------- Forwarded message --------- From: <[email protected]> Date: Mon, Mar 23, 2026 at 10:30 AM Subject: New Version Notification for draft-sipos-cose-cmac-01.txt To: Brian Sipos <[email protected]> A new version of Internet-Draft draft-sipos-cose-cmac-01.txt has been successfully submitted by Brian Sipos and posted to the IETF repository. Name: draft-sipos-cose-cmac Revision: 01 Title: AES-CMAC for COSE Date: 2026-03-23 Group: Individual Submission Pages: 7 URL: https://www.ietf.org/archive/id/draft-sipos-cose-cmac-01.txt Status: https://datatracker.ietf.org/doc/draft-sipos-cose-cmac/ HTML: https://www.ietf.org/archive/id/draft-sipos-cose-cmac-01.html HTMLized: https://datatracker.ietf.org/doc/html/draft-sipos-cose-cmac Diff: https://author-tools.ietf.org/iddiff?url2=draft-sipos-cose-cmac-01 Abstract: This document registers code points for using the Advanced Encryption Standard (AES) block cipher in Cipher-based Message Authentication Code (CMAC) mode within CBOR Object Signing and Encryption (COSE) messages. Specifically, these uses are for computing authentication tag values with no additional parameters. The IETF Secretariat
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