An Improved Fast Correlation Attack on Stream Ciphers

被引:0
|
作者
Zhang, Bin [1 ]
Feng, Dengguo [2 ]
机构
[1] Univ Luxembourg, Lab Algorithm Cryptol & Secur, 6 Rue Coudenhove Kalergi, L-1359 Luxembourg, Luxembourg
[2] Chinese Acad Sci, Inst Software, State Key Lab Informat Secur, Beijing 100190, Peoples R China
来源
基金
中国国家自然科学基金;
关键词
Stream ciphers; Correlation attacks; Linear feedback shift register (LFSR); Shrinking generator; SHRINKING GENERATOR;
D O I
暂无
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
At Crypto'2000, Johansson and Jonsson proposed a fast correlation attack on stream ciphers based on the Coldreich-Rubinfeld-Sudan algorithm. In this paper we show that a combination of their approach with techniques for substituting keystream and evaluating parity-checks gives us the most efficient fast correlation attack known so far. An application of the new algorithm results in the first-known near-practical key recovery attack on the shrinking generator with the parameters suggested by Krawczyk in 1994, which was verified in the 40-bit data LFSR case for which the only previously known efficient attacks were distinguishing attacks.
引用
收藏
页码:214 / +
页数:3
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