[11912] in cryptography@c2.net mail archive
Re: comparing RMAC to AES+CBC-MAC or XCBC (Re: Why is RMAC resistant
daemon@ATHENA.MIT.EDU (Jack Lloyd)
Wed Oct 23 14:57:30 2002
Date: Wed, 23 Oct 2002 12:37:47 -0400 (EDT)
From: Jack Lloyd <lloyd@acm.jhu.edu>
To: Adam Back <adam@cypherspace.org>
Cc: Cryptography <cryptography@wasabisystems.com>
In-Reply-To: <20021022225333.A144636@exeter.ac.uk>
On Tue, 22 Oct 2002, Adam Back wrote:
> The one difference which is an incremental improvement over raw
> CBC-MAC is that the final CBC-MAC a-like output is encrypted with the
> 2nd key K3. (K3 defined as K2 xor salt, K2 an independent key).
Which isn't even a new idea (it's done in ANSI X9.19, for example).
-Jack
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