Cryptanalysis of some self-synchronous chaotic stream ciphers and their improved schemes
Chen, Baoju and Yu, Simin and Li, David Day-Uei and Lü, Jinhu (2021) Cryptanalysis of some self-synchronous chaotic stream ciphers and their improved schemes. International Journal of Bifurcation and Chaos. ISSN 0218-1274 (In Press)
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Abstract
In this paper, a cryptanalysis method that combines a chosen-ciphertext attack with a divide-and-conquer attack by traversing multiple non-zero component initial conditions (DCA- TMNCIC) is proposed. The method is used for security analysis of n-D (n=3,4,5,6,7,8) self- synchronous chaotic stream ciphers that employ a product of two chaotic variables and three chaotic variables (n-D SCSC-2 and n-D SCSC-3), taking 3-D SCSC-2 as a typical example for cryptanalysis. For resisting the combinational effect of the chosen-ciphertext attack and DCA- TMNCIC, several improved chaotic cipher schemes are designed, including 3-D SCSC based on a nonlinear nominal system (3-D SCSC-NNS) and n-D SCSC based on sinusoidal modulation (n-D SCSC-SM (n=3,4,5,6,7,8)). Theoretical security analysis validates the improved schemes.
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Item type: Article ID code: 75542 Dates: DateEvent22 January 2021Published22 January 2021AcceptedSubjects: Medicine > Pharmacy and materia medica Department: Strategic Research Themes > Health and Wellbeing
Faculty of Science > Strathclyde Institute of Pharmacy and Biomedical SciencesDepositing user: Pure Administrator Date deposited: 24 Feb 2021 15:22 Last modified: 11 Feb 2024 02:15 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/75542