Cryptanalysis and improvement on a cryptosystem based on a chaotic map

Authors:
Xingyuan Wang;Canghai Yu
Affiliations:
Department of Electronic and Information Engineering, Dalian University of Technology, Dalian 116024, China;Department of Electronic and Information Engineering, Dalian University of Technology, Dalian 116024, China
Venue:
Computers & Mathematics with Applications
Year:
2009

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Abstract

In this paper, two fatal flaws of the cryptosystem which are based on the logistic map and proposed by Y. Wang and T. Xiang are pointed out. According to this, cryptanalysts could recover the plaintext by the chosen plaintext attacked in a short time. Therefore, the authors propose a remedial improvement which can avoid the flaws and enhance the security of the cryptosystem.