[Cfrg] request for comments on "Generation of Deterministic Initialization Vectors (IVs) and Nonces"
David McGrew <mcgrew@cisco.com> Tue, 19 July 2011 13:22 UTC
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From: David McGrew <mcgrew@cisco.com>
To: Peter Gutmann <pgut001@cs.auckland.ac.nz>
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Date: Tue, 19 Jul 2011 06:22:46 -0700
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Subject: [Cfrg] request for comments on "Generation of Deterministic Initialization Vectors (IVs) and Nonces"
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Hi Peter, your note seems like a good introduction for this topic. I wrote up a draft describing how deterministic IVs should be generated, and reviewing how they are used in different protocols: http://tools.ietf.org/html//draft-mcgrew-iv-gen-00 Comments welcome. You have a lot of experience with the implementation of robust crypto software, so if you have additions or improvements to Section 5 that would be great. Side note: I was somewhat surprised that I was able to write a 24 page document on a topic as narrow as IV generation, and your reminder to everyone of how important a topic it is makes me feel a bit better :-) David On Jul 18, 2011, at 10:02 PM, Peter Gutmann wrote: > =?iso-8859-1?Q?J=E9r=E9mie_Crenne?= <jeremie.crenne@univ-ubs.fr> > writes: > >> What is the feeling of the community about the recent potential AES- >> GCM >> weakness due to weak keys ? > > GCM's problem isn't the weak keys in AES-GCM, it's that it's a KSG > rather than > a standard block cipher. It's RC4 all over again, and we're going > to see the > same problems with GCM that we've already seen with RC4. There have > been > several already, and the only reason why we haven't seen more is > that GCM > isn't used that much (that is, it's used in a small number of widely- > deployed > applications, but hasn't become the universal algorithm of choice > that RC4 > was. Once, or if, it does, we'll see exactly the same problems that > plagued > RC4 throughout its effective lifetime). > > Peter. > _______________________________________________ > Cfrg mailing list > Cfrg@irtf.org > http://www.irtf.org/mailman/listinfo/cfrg
- [Cfrg] AES-GCM weakness Jérémie Crenne
- Re: [Cfrg] AES-GCM weakness David McGrew
- Re: [Cfrg] AES-GCM weakness Scott Fluhrer (sfluhrer)
- Re: [Cfrg] AES-GCM weakness Peter Gutmann
- [Cfrg] request for comments on "Generation of Det… David McGrew
- Re: [Cfrg] request for comments on "Generation of… Peter Gutmann
- Re: [Cfrg] request for comments on "Generation of… Dan Harkins
- Re: [Cfrg] request for comments on "Generation of… Peter Gutmann
- Re: [Cfrg] request for comments on "Generation of… Jim Schaad
- Re: [Cfrg] request for comments on "Generation of… David Jacobson
- Re: [Cfrg] request for comments on "Generation of… Dan Harkins
- [Cfrg] two-pass modes of operation David McGrew
- Re: [Cfrg] request for comments on "Generation of… David McGrew
- Re: [Cfrg] request for comments on "Generation of… Peter Gutmann