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28 March 2024
 
  » arxiv » cs/0702128

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LILI-128 stream cipher is successfully broken
Xiangao Huang ; Wei Huang ; Xiaozhou Liu ; Chao Wang ;
Date 22 Feb 2007
Subject Cryptography and Security
AbstractIn this letter we assert that LILI-128 stream cipher is successfully broken on IBM notebook PC using MATLAB. Our attack need approximately 2^12~2^13 bits and the attack consumes 5825.016 sec (using tic and toc sentences of MATLAB) or 5825.016/3600=1.6181hours. We got the expression of the nonlinear filter function fd of Lili-128 which has 46 items from liner items to nonlinear items. We have verified our attack result correctness by simulating the overview of Lili-128 keystream generators using our getting fd and implement designers reference module of the Lili-128 stream cipher, and two methods produce the same synchronous keystream sequence on same initial state. Our research work proves that LILI-128 stream cipher is successfully broken.
Source arXiv, cs/0702128
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