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Security performance analysis of a chaotic stream cipher
Lin, Zhuosheng1,2; Wang, Guangyi1; Wang, Xiaoyuan1; Yu, Simin1,2; Lu, Jinhu3
AbstractIn this paper, the security performance analysis for a self-synchronization and closed-loop feedback-based chaotic stream cipher is given. According to the chosen-ciphertext attack method, it is found that under the condition of selecting the ciphertext as fixed value, the original chaotic iterative equation is degenerated into an asymptotically stable iterative one, so that the explicit function of state variables and key parameters can be obtained. Based on this idea, and according to the chosen-ciphertext attack method, a single key decipher algorithm is further investigated. Firstly, multiple pairs of plaintext-ciphertext are obtained by choosing the corresponding multiple frames of ciphertext as fixed values. Secondly, a set of possible estimated values for this single key is acquired by utilizing among one pair of plaintext-ciphertext. Finally, the only estimated value that satisfies all the conditions of multiple pairs of plaintext-ciphertext is determined, as an estimated value from the set of all possible estimated values. Security performance analysis results have shown that, under the condition that only one unknown key needs to be deciphered while the remaining keys are all known, the proposed algorithm can, respectively, decipher each individual key accurately. In addition, the attack complexity of the proposed method is lower than that of the exhaustive attack.
KeywordChosen-ciphertext attack Chaotic stream cipher Security performance analysis Attack complexity
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
WOS IDWOS:000445930300015
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Document Type期刊论文
Corresponding AuthorWang, Guangyi
Affiliation1.Hangzhou Dianzi Univ, Sch Elect & Informat, Hangzhou 310018, Zhejiang, Peoples R China
2.Guangdong Univ Technol, Coll Automat, Guangzhou 510006, Guangdong, Peoples R China
3.Chinese Acad Sci, Inst Syst Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Lin, Zhuosheng,Wang, Guangyi,Wang, Xiaoyuan,et al. Security performance analysis of a chaotic stream cipher[J]. NONLINEAR DYNAMICS,2018,94(2):1003-1017.
APA Lin, Zhuosheng,Wang, Guangyi,Wang, Xiaoyuan,Yu, Simin,&Lu, Jinhu.(2018).Security performance analysis of a chaotic stream cipher.NONLINEAR DYNAMICS,94(2),1003-1017.
MLA Lin, Zhuosheng,et al."Security performance analysis of a chaotic stream cipher".NONLINEAR DYNAMICS 94.2(2018):1003-1017.
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