Theoretical Analysis of x^2 Attack on RC6 (Symmetric Cipher) (<Special Section>Cryptography and Information Security)

概要

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In this paper, we give a theoretical analysis of X^2 attack proposed by Knudsen and Meier on the RC6 block cipher. To this end, we propose a method of security evaluation against x^2 attack precisely including key dependency by introducing a method "Transition Matrix Computing." Previously, no theoretical security evaluation against x^2 attack was known, it has been done by computer experiments. We should note that it is the first result concerning the way of security evaluation against x^2 attack is shown theoretically.
社団法人電子情報通信学会の論文
2004-01-01