Re: [Hash] Charter discussion, round 1
Eric Rescorla <ekr@networkresonance.com> Tue, 28 June 2005 16:35 UTC
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To: Paul Hoffman <paul.hoffman@vpnc.org>
Subject: Re: [Hash] Charter discussion, round 1
In-reply-to: Your message of "Tue, 28 Jun 2005 08:31:58 PDT." <p06230977bee71c108c83@[10.20.30.249]>
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Date: Tue, 28 Jun 2005 09:35:21 -0700
From: Eric Rescorla <ekr@networkresonance.com>
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Paul Hoffman <paul.hoffman@vpnc.org> wrote: > At 1:01 PM +0100 6/27/05, Ben Laurie wrote: > >Russ Housley wrote: > >> Perhaps "as a parameter to the algorithm identifier" captures the > >> intent even better. It would read: > >> > >> 2) Including a random value in the hash function computation. The > >> random block used is transferred as a parameter to the algorithm > >> identifier. This approach is sometimes called a "salted" or > >> "randomized" hash function. > > > > It strikes me as weird, describing it as a parameter to the > > algorithm identifier - firstly, it seems this wording is derived > > from where you want to fit it into ASN.1 > > ... and PGP and IKE and other protocols that have parameters for > crypto functions. > > > , and secondly, why constrain it in this way? A protocol could > > easily transfer the random value somewhere other than in the > > algorithm identification. > > You may be right, but I'm not convinced about "easily". > > Do you have different wording that would help, for example, TLS use > these kinds of functions if we define them? TLS probably doesn't need them. Digital signatures in TLS are over jointly randomly generated values and not for non-repudation purposes. -Ekr _______________________________________________ Hash mailing list Hash@lists.ietf.org https://www1.ietf.org/mailman/listinfo/hash
- Re: [Hash] Charter discussion, round 1 Eric Rescorla
- [Hash] Hash BoF Russ Housley
- [Hash] Charter discussion, round 1 Paul Hoffman
- Re: [Hash] Charter discussion, round 1 Paul Hoffman
- RE: [Hash] Charter discussion, round 1 Jim Schaad
- Re: [Hash] Charter discussion, round 1 D. J. Bernstein
- Re: [Hash] Charter discussion, round 1 EKR
- Re: [Hash] Charter discussion, round 1 Paul Hoffman
- RE: [Hash] Charter discussion, round 1 Russ Housley
- Re: [Hash] Charter discussion, round 1 Russ Housley
- Re: [Hash] Charter discussion, round 1 Paul Hoffman
- Re: [Hash] Charter discussion, round 1 Russ Housley
- Re: [Hash] Charter discussion, round 1 The Purple Streak, Hilarie Orman
- Re: [Hash] Charter discussion, round 1 Russ Housley
- RE: [Hash] Charter discussion, round 1 Jim Schaad
- RE: [Hash] Charter discussion, round 1 Russ Housley
- RE: [Hash] Charter discussion, round 1 Paul Hoffman
- Re: [Hash] Charter discussion, round 1 Ben Laurie
- Re: [Hash] Charter discussion, round 1 Russ Housley
- Re: [Hash] Charter discussion, round 1 Paul Hoffman
- Re: [Hash] Charter discussion, round 1 Ben Laurie
- Re: [Hash] Charter discussion, round 1 Paul Hoffman
- Re: [Hash] Charter discussion, round 1 Ben Laurie
- Re: [Hash] Charter discussion, round 1 Eric Rescorla