DOI: 10.1016/j.disc.2008.03.020
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Abstract: a b s t r a c tA modern block cipher consists of round transformations, which are obtained by alternatively applying permutations (P-boxes) and substitutions (S-boxes). Clearly, the most important attribute of a block cipher is its security. However, with respect to the hardware implementation, a good block cipher has to have a reasonable complexity as well.In this paper, we study complexity of round transformations satisfying some basic security criteria. There are several ways to define the complexity of a r… Show more

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