Correlations in RC 6
نویسندگان
چکیده
In this paper the block cipher RC6 is analysed. RC6 is submitted as a candidate for the Advanced Encryption Standard, it has 128-bit blocks and supports keys of 128, 192 and 256 bits, and is an iterated 20-round block cipher. Here it is shown that versions of RC6 with 128-bit blocks can be distinguished from a random permutation with up to 15 rounds; for some weak keys up to 17 rounds. Moreover, with an increased eeort key-recovery attacks can be mounted on RC6 with up to 15 rounds faster than an exhaustive search for the key.
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