Re: [TLS] New Cached info draft
Adam Langley <agl@imperialviolet.org> Thu, 25 March 2010 23:21 UTC
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Date: Thu, 25 Mar 2010 19:21:56 -0400
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From: Adam Langley <agl@imperialviolet.org>
To: Stefan Santesson <stefan@aaa-sec.com>
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Subject: Re: [TLS] New Cached info draft
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On Thu, Mar 25, 2010 at 10:55 AM, Stefan Santesson <stefan@aaa-sec.com> wrote: > Major changes: > - The 64 bit FNV-1 non-cryptographic hash is used to provide a digest over > cached data. All use of hash algorithms has been removed, so also all > elements of hash algorithm agility. The FNV-1 digest algorithm used in this > specification is defined in Annex A. > > - It is now possible to query a server with an empty cached info extension > to find out if, and to what extent the server supports caching before the > client starts to cache data for that server. > > - The data substitution syntax has been explicitly defined for both defined > object types I knocked up patches for NSS (client and server) and for OpenSSL (server only) for this. (Available on request if anyone cares although the quality is currently "quick-hack"). One issue that I ran into: the representation of the FNV64 hash on the wire is unspecified. I assumed big-endian but it should be in the spec. I think there's a typo in the first line of section 5.1 (it mentioned trusted_cas when I think it should be certificate_chain) There are two section 5s. Also, does a "digest calculated over the certificate_list element of a server side Certificate message" contain the three length bytes? I assumed not. To be clear, a certificate_list is prefixed with three length bytes and contains a series of certificate, each of which has its own three length bytes. It seems clear the the length bytes of the certificates should be included, but I omitted the initial three. Cheers AGL -- Adam Langley agl@imperialviolet.org http://www.imperialviolet.org
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Stefan Santesson
- [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Kemp, David P.
- Re: [TLS] New Cached info draft Adam Langley
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Marsh Ray
- Re: [TLS] New Cached info draft Marsh Ray
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Simon Josefsson
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Adam Langley
- Re: [TLS] New Cached info draft Brian Smith
- Re: [TLS] New Cached info draft Brian Smith
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Martin Rex
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Brian Smith
- Re: [TLS] New Cached info draft Martin Rex
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Brian Smith
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Michael D'Errico
- Re: [TLS] New Cached info draft Marsh Ray
- Re: [TLS] New Cached info draft Brian Smith
- Re: [TLS] New Cached info draft Adam Langley
- Re: [TLS] New Cached info draft Stefan Santesson
- Re: [TLS] New Cached info draft Martin Rex
- Re: [TLS] New Cached info draft Martin Rex
- Re: [TLS] New Cached info draft Marsh Ray
- Re: [TLS] New Cached info draft Martin Rex