摘要Recently, the cryptosystem based on chaos has attracted much attention. Wang and Yu (Commun. Nonlin. Sci. Numer. Simulat.14 (2009) 574) proposed a block encryption algorithm based on dynamic sequences of multiple chaotic systems. We analyze the potential flaws in the algorithm. Then, a chosen-plaintext attack is presented. Some remedial measures are suggested to avoid the flaws effectively. Furthermore, an improved encryption algorithm is proposed to resist the attacks and to keep all the merits of the original cryptosystem.
Abstract：Recently, the cryptosystem based on chaos has attracted much attention. Wang and Yu (Commun. Nonlin. Sci. Numer. Simulat.14 (2009) 574) proposed a block encryption algorithm based on dynamic sequences of multiple chaotic systems. We analyze the potential flaws in the algorithm. Then, a chosen-plaintext attack is presented. Some remedial measures are suggested to avoid the flaws effectively. Furthermore, an improved encryption algorithm is proposed to resist the attacks and to keep all the merits of the original cryptosystem.
DU Mao-Kang**;HE Bo;WANG Yong
. Security Analysis of a Block Encryption Algorithm Based on Dynamic Sequences of Multiple Chaotic Systems[J]. 中国物理快报, 2011, 28(1): 10503-010503.
DU Mao-Kang**, HE Bo, WANG Yong
. Security Analysis of a Block Encryption Algorithm Based on Dynamic Sequences of Multiple Chaotic Systems. Chin. Phys. Lett., 2011, 28(1): 10503-010503.
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