On the Rate of Coincidence of Two Clock-Controlled Combiners
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Clock-Controlled combiner is a common type of keystream generator for stream cipher applications. In this paper, we introduce a kind of probabilistic model for two clock-controlled combiners, and then study the rate of coincidence between the output sequences of these generators and corresponding LFSRs’ sequences. The analysis conducted indicates that these two combiners may be vulnerable to the correlation attacks.
KeywordsClock-Controlled Combiner Probabilistic Model Rate of Coincidence
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- 2.Gollmann, D., Chambers, W.G.: Clock-controlled shift registers: A review. IEEE J. Select. Areas Commun. 7, 525–533 (1989)Google Scholar
- 4.Johanssson, T., Jonsson, F.: Fast correlation attacks on stream ciphers via convolutional codes. In: Stern, J. (ed.) EUROCRYPT 1999. LNCS, vol. 1592, pp. 347–362. Springer, Heidelberg (1999)Google Scholar
- 8.Cun-sun, D., Guo-zhen, X.: Stream cipher and its applications, pp. 189–199. National Defense Industrial Press, Beijing (1994) (in Chinese)Google Scholar
- 9.Shi-qu, L., Xiao-ying, H., Wen-fen, L., et al.: On some probabilistic model in cryptography, pp. 174–190. Publishing House of Electronics Industry, Beijing (2005) (in Chinese)Google Scholar