A Differential Cryptanalysis of Yen-Chen-Wu Multimedia Cryptography System (MCS)

Details A Differential Cryptanalysis of Yen-Chen-Wu Multimedia Cryptography System (MCS) A Differential Cryptanalysis of Yen-Chen-Wu Multimedia Cryptography System (MCS)

2009-08-18

arxiv.org/abs/0908.2496v1

Computer Science

Cryptography and Security

22 pages, 5 figures

Scientific paper

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.

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