We propose a new block cipher as a candidate for the Advanced Encryption Standard. Its design is highly conservative, yet still allows a very efficient implementation. It uses the well-understood DES S-boxes in a new structure that simultaneously allows a more rapid avalanche, a more efficient bitslice implementation, and an easy analysis that enables us to demonstrate its security against all known types of attack. With a 128-bit block size and a 256-bit key, it is almost as fast as DES on a wide range of platforms, yet conjectured to be at least as secure as three-key triple-DES.
CITATION STYLE
Biham, E., Anderson, R., & Knudsen, L. (1998). Serpent: A new block cipher proposal. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 1372, pp. 222–238). Springer Verlag. https://doi.org/10.1007/3-540-69710-1_15
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