[Resource Topic] 2001/061: Clock-Controlled Shift Registers for Key-Stream Generation

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Clock-Controlled Shift Registers for Key-Stream Generation

Authors: Alexander Kholosha


In this paper we estimate the period of the sequence generated by a clock-controlled LFSR with an irreducible feedback polynomial and an arbitrary structure of the control sequence, as well as some randomness properties of this sequence including element distribution and the autocorrelation function. Also we construct and analyze a specific key-stream generator that applies clock-control. Finally, we present a comprehensive survey of known correlation attacks on clock-controlled registers and their memoryless combiners.

ePrint: https://eprint.iacr.org/2001/061

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