Vimalathithan, R., Rossi, D., Omana, M., Metra, C. and Valarmathi, M.L. 2015. Cryptanalysis of Simplified-AES Encrypted Communication. *International Journal of Computer Science and Information Security.* 13 (10), pp. 142-150.

Title | Cryptanalysis of Simplified-AES Encrypted Communication |
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Authors | Vimalathithan, R., Rossi, D., Omana, M., Metra, C. and Valarmathi, M.L. |

Abstract | Genetic algorithm based Cryptanalysis has gained considerable attention due to its fast convergence time. This paper proposes a Genetic Algorithm (GA) based cryptanalysis scheme for breaking the key employed in Simplified- AES. Our proposed GA allows us to break the key using a Known Plaintext attack requiring a lower number of Plaintext-Ciphertext pairs compared to existing solutions. Moreover, our approach allows us to break the S-AES key using also a Ciphertext-only attack. As far as we are concerned, it is the first time that GAs are used to perform this kind of attack on S-AES. Experimental results prove that our proposed fitness function along with GA have drastically reduced the search space by a factor of 10 in case of Known plain text and 1.8 in case of Ciphertext only attack. |

Keywords | Cryptanalysis, Genetic Algorithm, Plaintext, Ciphertext, Simplified-AES |

Journal | International Journal of Computer Science and Information Security |

Journal citation | 13 (10), pp. 142-150 |

ISSN | 1947-5500 |

Year | 2015 |

Publisher | IJCSIS |

Publication dates | |

Published | 01 Oct 2015 |