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Re: [Cfrg] draft-housley-ccm-mode-00.txt

daw@mozart.cs.berkeley.edu (David Wagner) Fri, 16 August 2002 12:12 UTC

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Subject: Re: [Cfrg] draft-housley-ccm-mode-00.txt
Date: Fri, 16 Aug 2002 11:53:10 +0000
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Peter Gutmann wrote:
>If it's truly unencumbered, I'd like to see this as standards-track.

Can you elaborate?  What advantages do you see for CCM over
the standard encrypt-then-authenticate generic composition of
AES-CBC encryption and AES-CBC-MAC (suitably modified to be
secure for variable-length messages)?  The latter is unencumbered
and has the same performance characteristics as CCM.

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