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http://dx.doi.org/10.13089/JKIISC.2004.14.6.111

Analysis of hash functions based on cellular automata  

Jeong Kitae (고려대학교 정보보호기술연구센터)
Lee Jesang (고려대학교 정보보호기술연구센터)
Chang Donghoon (고려대학교 정보보호기술연구센터)
Sung Jaechul (서울시립대학교)
Lee Sangjin (고려대학교 정보보호기술연구센터)
Publication Information
Journal of the Korea Institute of Information Security & Cryptology / v.14, no.6, 2004 , pp. 111-123 More about this Journal
Abstract
A hash function is a function that takes bit strings of arbitrary length to bit string of fixed length. A cellular automata is a finite state machine and has the property of generating pseudorandom numbers efficiently by combinational logics of neighbour cells. In [1] and [7], hash functions based on cellular automata which can be implemented efficiently in hardware were proposed. In this paper, we show that we can find collisions of these hash functions with probability 0.46875 and 0.5 respectively.
Keywords
Cellular Automata; cryptanalysis; hash function; boolean function;
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