Re: [Hash] Charter discussion, round 1
Russ Housley <housley@vigilsec.com> Thu, 16 June 2005 14:52 UTC
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Date: Thu, 16 Jun 2005 10:50:51 -0400
To: Thomas Roessler <tlr@w3.org>
From: Russ Housley <housley@vigilsec.com>
Subject: Re: [Hash] Charter discussion, round 1
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Thomas: This text is intended to man that the salt is transferred along with the algorithm identifier some how. Using the 1988 ASN.1 syntax, an algorithm identifier is defined as: AlgorithmIdentifier ::= SEQUENCE { algorithm OBJECT IDENTIFIER, parameters ANY DEFINED BY algorithm OPTIONAL } In this structure, a new value would be assigned to identify the "SHA-1 with a salt" hash function, and the parameters field would carry the salt value. Russ At 04:11 AM 6/16/2005, Thomas Roessler wrote: >Hello, > >a quick question for clarification... > >On 2005-06-09 13:02:47 -0700, Paul Hoffman wrote: > > > 2) Including a random value in the hash function computation. The > > random block used is transferred as a parameter in the algorithm > > identifier. This approach is sometimes called a "salted" or > > "randomized" hash function. > >Is this meant to imply an approach where hash identifiers would look >like, say, "shaN-0xdeadbeef", 0xdeadbeef being the salt? Or is it >merely meant to imply that the seed would be transferred along with >the algorithm identifier, somehow? > >My concern with the first interpretation would be that it mixes >badly with XML Signature, where algorithm identifiers are URIs >(hence opaque), but where other mechanisms for passing parameters >are readily available. > >Thanks, >-- >Thomas Roessler, W3C <tlr@w3.org> _______________________________________________ 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