Re: [TLS] Justification

"Brian Smith" <brian@briansmith.org> Wed, 12 May 2010 16:01 UTC

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From: "Brian Smith" <brian@briansmith.org>
To: "'Adam Langley'" <agl@google.com>, <tls@ietf.org>
References: <20100510221531.GC9429@oracle.com> <201005111803.o4BI3fhO006065@stingray.missi.ncsc.mil> <20100511190958.GR9429@oracle.com> <4BE9B0BC.2000101@extendedsubset.com> <20100511194620.GU9429@oracle.com> <4BE9B856.40000@extendedsubset.com> <20100511200728.GW9429@oracle.com> <4BE9CC88.6040103@extendedsubset.com> <87aas5sbzy.fsf@mocca.josefsson.org> <4BEAC145.60607@pobox.com> <n2va84d7bc61005120811o737c2011i27f9d40e88417539@mail.gmail.com>
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Date: Wed, 12 May 2010 10:47:42 -0500
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Subject: Re: [TLS] Justification
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Adam Langley wrote:
> On Wed, May 12, 2010 at 10:55 AM, Michael D'Errico <mike-list@pobox.com>
> wrote:
> > Can someone please remind me why we want cached-info?  It seems that
> > the problems it creates aren't worth the small optimization it might
> > provide.
> 
> In order to support multi-ocsp stapling in the future without overflowing the
> initcwnd limit.

I don't think that a caching mechanism based on hashing the OCSP responses is going to be optimal for this. A different caching mechanism that allows the client to ask specifically for only *newer* (not just *different*) OCSP responses would be much better.

Regards,
Brian