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). Provided by Wikipedia

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    Contributors: ...Cooperative Atlantic States Shark Pupping and Nursery Habitat Survey...
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    Published 2014
    Contributors: ...Shark Identification Network...
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    Contributors: ...Pratt, E. J. (Edwin John), 1882-1964. Shark...
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