The signature is not calculated over the raw CBOR binary?

On Sun, Mar 23, 2025, 09:40 Göran Selander <[email protected]>
wrote:

> Hi Anders,
>
>
>
> *From: *Anders Rundgren <[email protected]>
> *Date: *Sunday, 23 March 2025 at 06:40
> *To: *Michael Richardson <[email protected]>, Orie Steele
> <[email protected]>, cose <[email protected]>
> *Subject: *[COSE] Re: [EXT] I-D Action:
> draft-ietf-cose-cbor-encoded-cert-13.txt
>
> AFAICT, C509 certificate signatures DO NOT use COSE;
>
>
>
> Yes, as mentioned previously in the thread, and shouldn’t come as a
> surprise to anyone that has read the draft.
>
>
>
> the signature is calculated over non-wrapped ("raw") CBOR using
>
> https://www.ietf.org/archive/id/draft-ietf-cose-cbor-encoded-cert-13.html#name-deterministic-encoding
>
>
>
> Section 3.6 Deterministic Encoding, which you refer to, is not about
> signature calculation. Deterministic encoding here refers to if the
> mapping  f: X.509 -> C509  is allowed to produce single or multiple (valid)
> representations. We should perhaps use a different term to avoid further
> misunderstandings.
>
>
>
> Göran
>
>
>
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