Re: [TLS] Issue 49: Finished.verify length
Eric Rescorla <ekr@networkresonance.com> Fri, 14 September 2007 14:21 UTC
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Date: Fri, 14 Sep 2007 07:18:09 -0700
From: Eric Rescorla <ekr@networkresonance.com>
To: Pasi.Eronen@nokia.com
Subject: Re: [TLS] Issue 49: Finished.verify length
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At Fri, 14 Sep 2007 15:56:43 +0300, <Pasi.Eronen@nokia.com> wrote: > > Bodo Moeller wrote: > > > > My suggestion was *not* to increase the current length, but rather > > > to add "agility" for this parameter as well (so that we don't > > > need to revisit the TLS base spec if, e.g., some future cipher > > > suite wants to have all the pieces at 256-bit level). > > > > OK, this makes perfect sense! The question as cited here was, > > should the verify_data length depend *on the PRF*. It shouldn't; > > but that doesn't mean we can't allow individual ciphersuites to > > specify their preferred verify_data lengths. > > The PRF depends on the ciphersuite, so having the verify_data length > depend on the PRF (or in other words: specifying the verify_data > length at the same place as the PRF) would be one relative simple > approach. > > (But we could allow different ciphersuites using the same PRF > to use different verify_data lengths as well) I'm still trying to understand the rationale for why it makes sense to have a verify_data != 12 bytes. Pasi, could you elaborate? Thanks, -Ekr _______________________________________________ TLS mailing list TLS@lists.ietf.org https://www1.ietf.org/mailman/listinfo/tls
- [TLS] Issue 49: Finished.verify length Eric Rescorla
- Re: [TLS] Issue 49: Finished.verify length Mike
- Re: [TLS] Issue 49: Finished.verify length Eric Rescorla
- Re: [TLS] Issue 49: Finished.verify length Mike
- Re: [TLS] Issue 49: Finished.verify length Bodo Moeller
- RE: [TLS] Issue 49: Finished.verify length Pasi.Eronen
- Re: [TLS] Issue 49: Finished.verify length Bodo Moeller
- Re: [TLS] Issue 49: Finished.verify length Bodo Moeller
- RE: [TLS] Issue 49: Finished.verify length Pasi.Eronen
- Re: [TLS] Issue 49: Finished.verify length Eric Rescorla
- Re: [TLS] Issue 49: Finished.verify length Eric Rescorla
- RE: [TLS] Issue 49: Finished.verify length Pasi.Eronen
- Re: [TLS] Issue 49: Finished.verify length Eric Rescorla
- RE: [TLS] Issue 49: Finished.verify length Pasi.Eronen
- Re: [TLS] Issue 49: Finished.verify length Eric Rescorla
- RE: [TLS] Issue 49: Finished.verify length Pasi.Eronen
- Re: [TLS] Issue 49: Finished.verify length Russ Housley