Secure chaotic system with application to chaotic ciphers
Secure chaotic system with application to chaotic ciphers
复制标题
安全混沌系统及其在混沌密码中的应用
DOI:
10.1016/j.ins.2012.09.037
复制
发表时间:
2013-02
影响因子:
8.1
通讯作者:
Zhang, Jiashu
中科院分区:
文献类型:
--
作者:
Wang, Xiaomin;Zhang, Wenfang;Guo, Wei;Zhang, Jiashu
Chaotic cryptography has been widely investigated in the past few years. However, the undesirable dynamical properties of the underlying chaotic systems degrade the security of chaotic ciphers and thereby discourage their applications. To address this issue, this paper first presents discrimination criteria for secure chaotic systems (SCSs) whose dynamical properties make them useful for the construction of secure ciphers and then discusses a class of chaotic systems, digital dynamical filters (DDFs), that meet the SCS criteria. Then, a DDF-based pseudorandom bit generator (DDF-PRBG) for constructing stream ciphers is proposed. Theoretical analysis and simulation results demonstrate that both the DDF and the DDF-PRBG, which satisfy the SCS criteria, have desirable cryptographic properties. Consequently, the SCS criteria and the DDF reference model can be used to overcome the problems caused by the dynamical properties of the underlying chaotic systems and increase the security of chaotic ciphers.
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DOI:
10.1016/j.ins.2007.11.001
发表时间:
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期刊:
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影响因子:
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