Cryptology ePrint Archive: Report 2015/286

Impossible Differential Cryptanalysis of Reduced Round SIMON

Zhan Chen and Ning Wang and Xiaoyun Wang

Abstract: Impossible differential is a useful method for cryptanalysis. SIMON is a light weight block cipher that has attracted lots of attention ever since its publication in 2013. In this paper we propose impossible differential attack on five versions of SIMON, using bit conditions to minimize key bits guessed. We calculate keybits and give the exact attack results.

Category / Keywords: secret-key cryptography / SIMON, impossible differential, bit condition

Date: received 26 Mar 2015

Contact author: z-chen14 at mails tsinghua edu cn

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Version: 20150326:095135 (All versions of this report)

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