Algebraic Analysis of the Simon Block Cipher Family

  • Håvard Raddum
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9230)


This paper focuses on algebraic attacks on the Simon family of block ciphers. We construct equation systems using multiple plaintext/ciphertext pairs, and show that many variables in the cipher states coming from different plaintexts are linearly related. A simple solving algorithm exploiting these relations is developed and extensively tested on the different Simon variants, giving efficient algebraic attacks on up to 16 rounds of the largest Simon variants.


Block cipher Algebraic attack Equation system Simon 


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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Simula Research LaboratoryBergenNorway

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