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SHARK : ウィキペディア英語版
SHARK

In cryptography, SHARK is a block cipher identified as one of the predecessors of Rijndael (the Advanced Encryption Standard).
SHARK has a 64-bit block size and a 128-bit key size. It is a six round SP-network which alternates a key mixing stage with linear and non-linear transformation layers. The linear transformation uses an MDS matrix representing a Reed-Solomon error correcting code in order to guarantee good diffusion. The nonlinear layer is composed of eight 8×8-bit S-boxes based on the function ''F(x) = x−1'' over ''GF(28)''.
Five rounds of a modified version of SHARK can be broken using an interpolation attack (Jakobsen and Knudsen, 1997).
==See also==

* KHAZAD
* Square

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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