[Suit] Hash Algorithm Identifiers (was: [Cbor] Packed CBOR review)

Brendan Moran <Brendan.Moran@arm.com> Thu, 17 June 2021 13:32 UTC

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From: Brendan Moran <Brendan.Moran@arm.com>
To: suit <suit@ietf.org>
CC: Carsten Bormann <cabo@tzi.org>
Thread-Topic: Hash Algorithm Identifiers (was: [Cbor] Packed CBOR review)
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Date: Thu, 17 Jun 2021 13:31:52 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/suit/bOWp-CCqgrfSbzh7TpIJ2_H9KY8>
Subject: [Suit] Hash Algorithm Identifiers (was: [Cbor] Packed CBOR review)
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cose-wg has now finalised a set of algorithm identifiers for digests. SUIT’s digest container predates this work, but now that draft-ietf-cose-hash-algs is in the RFC Editor’s queue, I think it might make sense to replace the suit-digest-algorithm-id with a COSE Algorithm Identifier.

Best Regards,
Brendan

> On 17 Jun 2021, at 12:33, Carsten Bormann <cabo@tzi.org> wrote:
>
> I thought COSE did: https://datatracker.ietf.org/doc/draft-ietf-cose-hash-algs/
> (in RFC editor queue; registrations already done) did this:
>
>   | Name        | Value | Recommended |
>   |-------------|-------|-------------|
>   | SHA-1       |   -14 | Filter Only |
>   | SHA-256/64  |   -15 | Filter Only |
>   | SHA-256     |   -16 | Yes         |
>   | SHA-384     |   -43 | Yes         |
>   | SHA-512     |   -44 | Yes         |
>   | SHA-512/256 |   -17 | Yes         |
>   | SHAKE128    |   -18 | Yes         |
>   | SHAKE256    |   -45 | Yes         |
>
> Grüße, Carsten
>

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