In this paper we propose a new key recovery attack on irregular clocked keystream generators where the stream is filtered by a nonlinear Boolean function. We show that the attack is much more efficient than expected from previous analytic methods, and we believe it improves all previous attacks on the cipher model. © International Association for Cryptologic Research 2004.
CITATION STYLE
Molland, H., & Helleseth, T. (2004). An Improved correlation attack against irregular clocked and filtered keystream generators. Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 3152, 373–389. https://doi.org/10.1007/978-3-540-28628-8_23
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