[12565] in cryptography@c2.net mail archive
one question about RC4
daemon@ATHENA.MIT.EDU (Xunhua (Steve) Wang)
Sun Feb 23 13:10:12 2003
X-Original-To: cryptography@wasabisystems.com
X-Original-To: cryptography@wasabisystems.com
From: "Xunhua (Steve) Wang" <wangxx@jmu.edu>
To: <cryptography@wasabisystems.com>
Date: Fri, 21 Feb 2003 14:31:52 -0500
In-Reply-To: <8765reo6q9.fsf@snark.piermont.com>
I have a question about RC4. Assume key k1 and k2 are 128 bits and let
E(k, m) denote the RC4 encryption of m by k, is there a key, k3, of RC4
satisfying that E(k2, E(k1, m)) = E(k3, m) and if yes, how can we find
such k3?
Thanks,
Steve
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