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Re: [Trans] Draft agenda

Rob Stradling <rob.stradling@comodo.com> Tue, 25 February 2014 10:09 UTC

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Date: Tue, 25 Feb 2014 10:09:17 +0000
From: Rob Stradling <rob.stradling@comodo.com>
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To: Ben Laurie <benl@google.com>, Phillip Hallam-Baker <hallam@gmail.com>
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Cc: Melinda Shore <melinda.shore@gmail.com>, "trans@ietf.org" <trans@ietf.org>, Eran Messeri <eranm@google.com>
Subject: Re: [Trans] Draft agenda
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On 25/02/14 07:23, Ben Laurie wrote:
> On 24 February 2014 19:17, Phillip Hallam-Baker <hallam@gmail.com> wrote:
>> What exactly is a 'precertificate'. Either something is a cert or it is not.
>>
>> If it parses as an X.509v3 certificate then it is an X.509v3 certificate and
>> thats an end to it.
>
> Indeed, and a precertificate is a certificate. RFC 6962 defines what
> exactly it is.
>
> Not sure where you're going with this.
>
>> If it is not then it is probably a CSR which would seem to be the existing
>> PKIX structure that fits its purpose.
>
> Not really - a precertificate needs to be signed.

CSRs are signed.  Self-signed, usually.

I think Phill is suggesting that a Precertificate could be a CSR, 
generated and signed by the CA (rather than self-signed by the 
certificate applicant).  The problem I see with this is that the CSR 
format doesn't contain some of the essential fields that MUST be present 
in a Precertificate: Serial Number, Issuer Name, etc.

-- 
Rob Stradling
Senior Research & Development Scientist
COMODO - Creating Trust Online

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