Open AccessPseudo-random Bit Generator Based on Couple Chaotic Systems and Its Applications in Stream-Cipher Cryptography
Author(s) -
Shujun Li,
Xuanqin Mou,
Cai Yuanlong
Publication year - 2001
Publication title -
lecture notes in computer science
Language(s) - English
Resource type - Book series
SCImago Journal Rank - 0.249
H-Index - 400
eISSN - 1611-3349
pISSN - 0302-9743
ISBN - 3-540-43010-5
DOI - 10.1007/3-540-45311-3_30
Subject(s) - stream cipher , computer science , cryptography , chaotic , generator (circuit theory) , theoretical computer science , cipher , pseudorandom number generator , cryptanalysis , key schedule , s box , affine cipher , algorithm , block cipher , computer engineering , encryption , differential cryptanalysis , computer security , artificial intelligence , triple des , physics , power (physics) , quantum mechanics
Chaotic cryptology is widely investigated recently. This paper reviews the progress in this area and points out some existent problems in digital chaotic ciphers. As a comprehensive solution to these problems, a novel pseudo-random bit generator based on a couple of chaotic systems called CCS-PRBG is presented. Detailed theoretical analyses show that it has perfect cryptographic properties, and can be used to construct stream ciphers with higher security than other chaotic ciphers. Some experiments are made for confirmation. Finally, several examples of stream ciphers based on digital CCS-PRBG are given, and their security is discussed
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