Re: NIST publishes new DSA draft
Ian G <iang@systemics.com> Mon, 20 March 2006 20:15 UTC
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Date: Mon, 20 Mar 2006 20:38:47 +0100
From: Ian G <iang@systemics.com>
Organization: http://financialcryptography.com/
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To: Jon Callas <jon@callas.org>
Cc: OpenPGP <ietf-openpgp@imc.org>
Subject: Re: NIST publishes new DSA draft
References: <20060314194447.4D59A57FB0@finney.org> <20060316192823.GA9945@jabberwocky.com> <441ACF45.704@systemics.com> <87fylhdq36.fsf@wheatstone.g10code.de> <20060317174937.GC13241@jabberwocky.com> <3C3EAEDD-7724-4E92-AA3C-49B5B2E6F3F9@callas.org>
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Jon Callas wrote: > > I think we ought to keep it with the same algorithm number. > > I'm happy to put in SHA-224 (meaning it's trivial work), but I don't > like it, myself. The reason is that SHA-224 is really a truncated > SHA-256. Thus, it has no advantages over SHA-256 except being smaller > by 32-bits with 112 bits of security. The reason it exists at all is > for crypto-balance with 2-key 3DES (which is not TDEA), which we don't > allow at all. I don't think we should have it as it goes against our > principles of wanting a minimum of 128-bits of security in OpenPGP. > (Yes, yes, I know that SHA-1 doesn't meet this either, but until > SHA-256, we didn't have many options. That doesn't mean the principle > is wrong; we *have* options.) In general I'd agree that the less algorithms/lengths the better. I'd certainly be keen to drop SHA-224 if there is no good reason for it. iang
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- Re: NIST publishes new DSA draft "Hal Finney"
- Re: NIST publishes new DSA draft James Couzens
- Re: NIST publishes new DSA draft "Hal Finney"
- Re: NIST publishes new DSA draft Ian Grigg
- Re: NIST publishes new DSA draft Werner Koch
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- Re: NIST publishes new DSA draft Ben Laurie
- Re: NIST publishes new DSA draft vedaal
- RE: NIST publishes new DSA draft Anton Stiglic
- Re: NIST publishes new DSA draft David Shaw
- Re: NIST publishes new DSA draft "Hal Finney"
- Re: NIST publishes new DSA draft David Shaw
- Re: NIST publishes new DSA draft Ian G
- Re: NIST publishes new DSA draft Werner Koch
- Re: NIST publishes new DSA draft David Shaw
- Re: NIST publishes new DSA draft Jon Callas
- Re: NIST publishes new DSA draft Jon Callas
- Re: NIST publishes new DSA draft Ian G
- Re: NIST publishes new DSA draft David Shaw
- Re: NIST publishes new DSA draft Tony Hansen
- Re: NIST publishes new DSA draft David Shaw
- Re: NIST publishes new DSA draft Ben Laurie
- Re: NIST publishes new DSA draft Jon Callas
- Re: NIST publishes new DSA draft Jon Callas
- Re: NIST publishes new DSA draft Ben Laurie
- Re: NIST publishes new DSA draft Jon Callas