[8679] in cryptography@c2.net mail archive
Re: Requesting feedback on patched RC4-variant
daemon@ATHENA.MIT.EDU (Matthijs van Duin)
Tue Apr 24 11:23:53 2001
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Date: Mon, 23 Apr 2001 23:25:04 +0200
To: cryptography@wasabisystems.com
From: Matthijs van Duin <matthijs@cds.nl>
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>Remember that the signal is being send using DSSS (Direct sequence
>spread spectrum, similar to CDMA digital phones) and the chances of
>an attacker being able to change just one bit, or a targeted
>selection of bits, in a message, is essentially zero.
Maybe a middle-man attack, when the base station and the client are
almost out of range?
>But you think that CBC mode of a (non-sucky) block cipher is
>adequate protection? Sigh.
I never suggested it was adequate. I was just wondering how much my
changes influence the security of the algorithm, especially in
relation to the bit-toggle problem.
-xmath
PS I tried it today.. plain RC4 can excellently be executed manually
(base 52 or 26, instead of 256) using a deck of cards :-)
Matthijs van Duin
- PGP Key: 0xB6205CCB <finger://PGPkey_DH@hmvd.cds.nl> -
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