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Journal of Applied Mathematics
Volume 2013, Article ID 713673, 10 pages
http://dx.doi.org/10.1155/2013/713673
Research Article

Collision Attacks on AES-192/256, Crypton-192/256, mCrypton-96/128, and Anubis

1Center for Information Security Technologies (CIST), Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, Republic of Korea
2Department of Mathematics, University of Seoul, Jeonnong-dong, Dongdaemun-gu, Seoul 130-743, Republic of Korea

Received 19 July 2013; Accepted 22 August 2013

Academic Editor: Jongsung Kim

Copyright © 2013 Jinkeon Kang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

At AES’00, a collision attack on 7-round reduced AES was proposed. In this paper, we apply this idea to seven SPN block ciphers, AES-192/256, Crypton-192/256, mCrypton-96/128, and Anubis. Applying our attacks on AES-192/256, we improve the attack result based on meet-in-the-middle attack (AES-192) and the attack result proposed in AES’00 (AES-256), respectively. Our attack result on Anubis is superior to known cryptanalytic result on it. In the cases of Crypton-192/256 and mCrypton-96/128, our attacks are applicable to 8-round reduced versions. The attack results on mCrypton-96/128 are more practical than known cryptanalytic results on them.