Beyond-Birthday-Bound Security for Tweakable Even-Mansour Ciphers with Linear Tweak and Key Mixing

IACR Cryptology ePrint Archive, Volume 2015, 2015, Pages 134-158.

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EI
Keywords:
Tweakable block cipherIterated Even-Mansour cipherKey-alternating cipherBeyond-birthday-bound security

Abstract:

The iterated Even-Mansour construction defines a block cipher from a tuple of public n-bit permutations $P_1,\\ldots ,P_r$ by alternatively xoring some n-bit round key $k_i$, $i=0,\\ldots ,r$, and applying permutation $P_i$ to the state. The tweakable Even-Mansour construction generalizes the conventional Even-Mansour construction...More

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