At ISCAS'2005, Yen et al. presented a new chaos-based cryptosystem for multimedia transmission named "Multimedia Cryptography System" (MCS). No cryptanalytic results have been reported so far. This paper presents a differential attack to break MCS, which requires only seven chosen plaintexts. The complexity of the attack is O(N), where N is the size of plaintext. Experimental results are also given to show the real performance of the proposed attack.
@article{arxiv.0908.2496,
title = {A Differential Cryptanalysis of Yen-Chen-Wu Multimedia Cryptography System (MCS)},
author = {Chengqing Li and Shujun Li and Kowk-Tung Lo and Kyandoghere Kyamakya},
journal= {arXiv preprint arXiv:0908.2496},
year = {2009}
}