Presentation 2005-09-16
Improved Security for Chaos-based Stream Cryptosystems by Multi-layer Synchronization Systems
Thang Manh HOANG, Toan Minh DO, Masahiro NAKAGAWA,
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Abstract(in English) Application of deterministic chaos in secure communication brings advantages over conventional methods in the sense that messages are combined with chaotic signals for transmission. In chaos-based secure communication systems, the parameters and initial condition of chaotic systems are regarded as a secrete key and are known in the transmitter and receiver sides. The range of parameters, however, is restricted by chaotic behavior of dynamical systems. In this report, a new model of chaos-based stream cryptosystem for secure communication is proposed in terms of multi-layer synchronization system such that the range of parameters can be expanded as in the case of the parameters of chaotic systems. Moreover, the chaotic systems, which produce the chaotic signals for the keystream generators, are hidden by the multi-layer synchronization. Besides that a new scheme of the keystream generation is given in which instant keys are much more sensitive to the evolution of chaotic variables beyond the conventional ones. The numerical simulation is accomplished to demonstrate the effectiveness of the presently proposed system.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) chaos synchronization / chaos-based secure communication / stream cryptosystem
Paper # CAS2005-38,NLP2005-51
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Conference Information
Committee NLP
Conference Date 2005/9/9(1days)
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Paper Information
Registration To Nonlinear Problems (NLP)
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Improved Security for Chaos-based Stream Cryptosystems by Multi-layer Synchronization Systems
Sub Title (in English)
Keyword(1) chaos synchronization
Keyword(2) chaos-based secure communication
Keyword(3) stream cryptosystem
1st Author's Name Thang Manh HOANG
1st Author's Affiliation Department of Electrical Engineering, Faculty of Engineering, Nagaoka University of Technology()
2nd Author's Name Toan Minh DO
2nd Author's Affiliation Department of Electrical Engineering, Faculty of Engineering, Nagaoka University of Technology
3rd Author's Name Masahiro NAKAGAWA
3rd Author's Affiliation Department of Electrical Engineering, Faculty of Engineering, Nagaoka University of Technology
Date 2005-09-16
Paper # CAS2005-38,NLP2005-51
Volume (vol) vol.105
Number (no) 277
Page pp.pp.-
#Pages 6
Date of Issue