RE: Embedded certificate image

"Jim Schaad" <ietf@augustcellars.com> Thu, 30 July 2009 11:29 UTC

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From: Jim Schaad <ietf@augustcellars.com>
To: 'Stefan Santesson' <stefan@aaa-sec.com>, 'Peter Gutmann' <pgut001@cs.auckland.ac.nz>, ietf-pkix@imc.org, ynir@checkpoint.com
References: <E1MWQZn-0003tn-92@wintermute01.cs.auckland.ac.nz> <C697230F.39F8%stefan@aaa-sec.com>
In-Reply-To: <C697230F.39F8%stefan@aaa-sec.com>
Subject: RE: Embedded certificate image
Date: Thu, 30 Jul 2009 12:56:10 +0200
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RFC 2397  The data URL scheme.  Limitations on the length of the URL are
application dependent.

> -----Original Message-----
> From: owner-ietf-pkix@mail.imc.org [mailto:owner-ietf-
> pkix@mail.imc.org] On Behalf Of Stefan Santesson
> Sent: Thursday, July 30, 2009 10:15 AM
> To: Peter Gutmann; ietf-pkix@imc.org; ynir@checkpoint.com
> Subject: Re: Embedded certificate image
> 
> 
> Peter,
> 
> In-line;
> 
> On 09-07-30 10:01 AM, "Peter Gutmann" <pgut001@cs.auckland.ac.nz>
> wrote:
> 
> >
> > Stefan Santesson <stefan@aaa-sec.com> writes:
> >
> >> This is the case for RFC 3709, which is the standard we would use to
> bind a
> >> cert image to the certificate. RFC 3709 does only offer a URL as
> means of
> >> referring to the actual image, it does not offer any other means of
> local
> >> storage.
> >
> > Why not use one of the type-and-value options, OtherLogoTypeInfo or
> something?
> > This just seems like a horrible kludge, like pounding a nail with a
> scredriver
> > because that's what was lying around.
> 
> We have concluded that the RFC 3709 syntax does not allow any such
> option or
> extensibility. It's either in the URL or nothing at all.
> 
> >
> > How do you distinguish real URLs from not-a-real-URLs?
> >
> > Peter.
> >
> 
> That is my question to Jim. Apparently there is an RFC that would tell.
> 
> In any case, this is just an interesting idea that we should
> investigate. I
> have scary feelings too about this but I would like to turn the stone
> and
> look at it before throwing this option away.
> 
> /Stefan
>