Can create a cert with no serial number?

Viktor Dukhovni openssl-users at dukhovni.org
Thu Jun 1 03:13:05 UTC 2023


On Wed, May 31, 2023 at 11:05:14PM -0400, Robert Moskowitz wrote:

> So here there is a real risk of serial number duplication, but the 
> subjectKey will be different.  That is what I am pinning uniqueness on.  

If you intend to be able to publish CRLs, then the serial numbers must
be unique.

    https://datatracker.ietf.org/doc/html/rfc5280#section-5.1.2.6

CRLs list just the serial numbers of revoked certificates.

-- 
    Viktor.


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