Abstract
Edit distance based correlation attacks on binary keystream generators consisting of clock-controlled shift registers combined by a function with memory are introduced. Recursive algorithms for efficient computation of the proposed many-to-one string edit distances are derived for both the constrained and unconstrained irregular clocking. The distances are based on mutually correlated input and output feedforward linear transforms for regularly clocked combiners with memory. Linear transforms can also incorporate linear models of clock-controlled shift registers. In particular, linear transforms and the corresponding correlation coefficients are obtained for a special type of combiners with memory based on a time-varying memoryless function.
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Golić, J.D. (1996). Edit distance correlation attacks on clock-controlled combiners with memory. In: Pieprzyk, J., Seberry, J. (eds) Information Security and Privacy. ACISP 1996. Lecture Notes in Computer Science, vol 1172. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0023297
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DOI: https://doi.org/10.1007/BFb0023297
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