Re: [openpgp] Can the OpenPGP vs. S/MIME situation be fixed?

Werner Koch <wk@gnupg.org> Thu, 07 July 2016 15:32 UTC

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From: Werner Koch <wk@gnupg.org>
To: Derek Atkins <derek@ihtfp.com>
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Date: Thu, 07 Jul 2016 17:28:22 +0200
In-Reply-To: <sjminwhpkw2.fsf@securerf.ihtfp.org> (Derek Atkins's message of "Thu, 07 Jul 2016 10:45:17 -0400")
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Cc: Phillip Hallam-Baker <phill@hallambaker.com>, Jon Callas <joncallas@icloud.com>, IETF OpenPGP <openpgp@ietf.org>
Subject: Re: [openpgp] Can the OpenPGP vs. S/MIME situation be fixed?
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On Thu,  7 Jul 2016 16:45, derek@ihtfp.com said:

> I guess X.509v3 does, theoretically, allow multiple signatures on a
> certificate, but I was under the impression that zero implementations
> actually supported that?

I can't see how this is possible within an X.509 certificate:

   Certificate  ::=  SEQUENCE  {
        tbsCertificate       TBSCertificate,
        signatureAlgorithm   AlgorithmIdentifier,
        signatureValue       BIT STRING  }

There is only one signature for the to-be-signed-Certificate.


Salam-Shalom,

   Werner


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