Breaking a Chaotic Cryptographic Scheme Based on Composition Maps

Details Breaking a Chaotic Cryptographic Scheme Based on Composition Maps Breaking a Chaotic Cryptographic Scheme Based on Composition Maps

2009-07-18

arxiv.org/abs/0907.3177v1

Computer Science

Cryptography and Security

9 pages, 7 figures

Scientific paper

Recently, a chaotic cryptographic scheme based on composition maps was proposed. This paper studies the security of the scheme and reports the following findings: 1) the scheme can be broken by a differential attack with $6+\lceil\log_L(MN)\rceil$ chosen-plaintext, where $MN$ is the size of plaintext and $L$ is the number of different elements in plain-text; 2) the scheme is not sensitive to the changes of plaintext; 3) the two composition maps do not work well as a secure and efficient random number source.

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