Probably all the better...

On 11/7/23 08:48, Göran Selander wrote:

Hi Mike, Carsten,

It is already in there, but using ‘null’ instead of ‘false’:

”The value "99991231235959Z" (no expiration date) is encoded as CBOR null.”

See bullet “validity” in this section:

https://datatracker.ietf.org/doc/html/draft-ietf-cose-cbor-encoded-cert-07#name-message-fields

Göran

*From: *Carsten Bormann <[email protected]>
*Date: *Tuesday, 7 November 2023 at 14:26
*To: *Mike Ounsworth <[email protected]>
*Cc: *[email protected] <[email protected]>, [email protected] <[email protected]> *Subject: *Re: [COSE] draft-ietf-cose-cbor-encoded-cert: make NotAfter optional

On 2023-11-07, at 13:45, Mike Ounsworth <[email protected]> wrote:
>
> could notAfter be made optional in C509?

If that seems to far a step, let’s just use

        false

for

        99991231235959Z

Grüße, Carsten


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