Re: [Cfrg] Help with the use of contexts
Watson Ladd <watsonbladd@gmail.com> Tue, 17 January 2017 15:06 UTC
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From: Watson Ladd <watsonbladd@gmail.com>
Date: Tue, 17 Jan 2017 07:06:45 -0800
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To: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Subject: Re: [Cfrg] Help with the use of contexts
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On Jan 17, 2017 3:48 AM, "Stephen Farrell" <stephen.farrell@cs.tcd.ie> wrote: On 16/01/17 20:09, D. J. Bernstein wrote: > I would really like to see this unnecessary complexity eliminated from > CFRG's signature specifications. I'm relatively neutral on the use or non-use of contexts, but lean more towards Dan's position that the API changes involved mean that practically, it's better to not demand contexts. However, I really do wish that CFRG specs would not offer both choices - that will simply lead to repeating this discussion each time an IETF protocol wants to use the CFRG spec. And of course, different decisions will be made over time, leading to slightly more mess than would otherwise exist. That's not a showstopper thing, but life will be better if the choice is not offered. So, I'd support eliminating contexts from CFRG specs and saying something like "if you want that, and it's not a bad idea for avoiding cross-protocol attacks, then do it at a layer above the crypto API." Cheers, S. PS: random idea - I wonder if analysis of wireshark dissector source code, or some application calling such code, might be a fine way to spot potential cross-protocol attacks - anyone know if that's been tried? What we want is to determine if the intersection of two badly specified possibly context sensitive languages is empty. This is tricky. If protocols stuck to regular languages it would be decideable. _______________________________________________ Cfrg mailing list Cfrg@irtf.org https://www.irtf.org/mailman/listinfo/cfrg
- [Cfrg] Help with the use of contexts Sean Turner
- Re: [Cfrg] Help with the use of contexts Paterson, Kenny
- Re: [Cfrg] Help with the use of contexts Adam Langley
- Re: [Cfrg] Help with the use of contexts D. J. Bernstein
- Re: [Cfrg] Help with the use of contexts Yaron Sheffer
- Re: [Cfrg] Help with the use of contexts Stephen Farrell
- Re: [Cfrg] Help with the use of contexts Watson Ladd
- Re: [Cfrg] Help with the use of contexts Yoav Nir
- Re: [Cfrg] Help with the use of contexts Adam Langley
- Re: [Cfrg] Help with the use of contexts Dan Brown
- Re: [Cfrg] Help with the use of contexts Yaron Sheffer
- Re: [Cfrg] Help with the use of contexts Ilari Liusvaara
- Re: [Cfrg] Help with the use of contexts Yoav Nir
- Re: [Cfrg] Help with the use of contexts Watson Ladd
- Re: [Cfrg] Help with the use of contexts Yoav Nir
- Re: [Cfrg] Help with the use of contexts Stephen Farrell
- Re: [Cfrg] Help with the use of contexts Paterson, Kenny
- Re: [Cfrg] Help with the use of contexts Tibor Jager
- Re: [Cfrg] Help with the use of contexts Ilari Liusvaara
- Re: [Cfrg] Help with the use of contexts Natanael
- Re: [Cfrg] Help with the use of contexts Tibor Jager
- Re: [Cfrg] Help with the use of contexts Ilari Liusvaara