[cabfpub] CT Precertificates and the BRs

Rob Stradling rob.stradling at comodo.com
Thu Dec 19 15:25:00 UTC 2013

On 19/12/13 15:01, Phillip Hallam-Baker wrote:
> We have a pre-certificate standard already, its called a CSR.

That's true.

> It might not have all the fields we need yet.

Indeed.  It doesn't have all the fields we need.

> But I am very unhappy with CAs signing anything that looks like a certificate but is not a certificate.

Currently, a CT Precertificate looks like a certificate and _is_ a 

> There must be no possible way that CT could compromise the existing WebPKI

Sure.  If there are 2 certs (a Certificate and its associated CT 
Precertificate) with the same Issuer Name and Serial Number, what 
exactly would break in the WebPKI?

The inability to revoke one without also revoking the other is actually 
a requirement (not a problem) in this case.

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