Cryptanalysis of a Chaotic Stream Cipher and Its Improved Scheme

doi:10.1142/S0218127418500864

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	Cryptanalysis of a Chaotic Stream Cipher and Its Improved Scheme
	Lin, Zhuosheng 1; Yu, Simin 1; Feng, Xiutao2 ; Lu, Jinhu3,4,5
	2018-06-30
发表期刊	INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS
ISSN	0218-1274
卷号	28 期号:7 页码:27
摘要	In this paper, the security performance for an 8D self-synchronous and feedback-based chaotic stream cipher with the low 8 bits of state variables for encryption is analyzed. According to known-plaintext attack and divide-and-conquer attack, only the second plain-pixel and its corresponding cipher-pixel are required to decipher the secret keys (a) over cap (1i), (a) over cap (2i), (a) over cap (3i) (i = 1, 2, ... , 8) by properly setting 64 different kinds of initial conditions. Then, according to chosen-ciphertext attack and divide-and-conquer attack, it is found that under the condition of selecting the ciphertext as zero, the original chaotic equation is degenerated as a linear one. So, by setting appropriate initial conditions, the secret keys (a) over cap (4i), (a) over cap (5i), (a) over cap (6i), (a) over cap (7i), (a) over cap (8i) (i = 4, 5, 6, 7, 8) can be deciphered with only four iterative operations. As for the secret keys a(4i), a(5i), a(6i), a(7i), a(8i) (i = 1, 2, 3) multiplied by ciphertext and the secret keys sigma(i), epsilon(i) (i = 1, 2, 3) related to nonlinear functions, maybe a more powerful attack method is required for these secret keys to be deciphered. Finally, an improved chaotic stream cipher scheme equipped with the low 8 bits derived from nonlinear operation of multiple state variables for encryption is proposed for improving the ability to resist divide-and-conquer attack and chosen-ciphertext attack.
关键词	Chaotic stream cipher divide-and-conquer attack chosen-ciphertext attack improved chaotic encryption algorithm
DOI	10.1142/S0218127418500864
语种	英语
资助项目	National Key Research and Development Program of China[2016YFB0800401] ; National Natural Science Foundation of China[61532020] ; National Natural Science Foundation of China[61671161] ; National Natural Science Foundation of China[61572491] ; National Natural Science Foundation of China[11688101] ; National Natural Science Foundation of China[61621003] ; Science and Technology Planning Project of Guangzhou[201510010136]
WOS研究方向	Mathematics ; Science & Technology - Other Topics
WOS类目	Mathematics, Interdisciplinary Applications ; Multidisciplinary Sciences
WOS记录号	WOS:000439096400009
出版者	WORLD SCIENTIFIC PUBL CO PTE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/33419
专题	系统科学研究所
通讯作者	Feng, Xiutao
作者单位	1.Guangdong Univ Technol, Coll Automat, Guangzhou 510006, Guangdong, Peoples R China 2.Chinese Acad Sci, Acad Math & Syst Sci, Inst Math, Beijing 100190, Peoples R China 3.Beihang Univ, Sch Automat Sci & Elect Engn, State Key Lab Software Dev Environm, Beijing 100191, Peoples R China 4.Beihang Univ, Beijing Adv Innovat Ctr Big Data & Brain Comp, Beijing 100191, Peoples R China 5.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Lin, Zhuosheng,Yu, Simin,Feng, Xiutao,et al. Cryptanalysis of a Chaotic Stream Cipher and Its Improved Scheme[J]. INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS,2018,28(7):27.
APA	Lin, Zhuosheng,Yu, Simin,Feng, Xiutao,&Lu, Jinhu.(2018).Cryptanalysis of a Chaotic Stream Cipher and Its Improved Scheme.INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS,28(7),27.
MLA	Lin, Zhuosheng,et al."Cryptanalysis of a Chaotic Stream Cipher and Its Improved Scheme".INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS 28.7(2018):27.