An algorithm for the initial state reconstruction of the clock-controlled shift register
نویسنده
چکیده
An algorithm is given for the reconstruction of the initial state of a key–stream generator (KSG) consisting of a short linear feedback shift register (length ≤ 30), whose clock is controlled by an algebraically simple internal KSG. The algorithm is based on the fact that the expected number of possible LFSR initial states exponentially decreases with the length of the known part of the output sequence. Index Terms — Clock–controlled FSR (feedback shift register), Levenshtein distance. ∗The author is with the Institute of Applied Mathematics and Electronics, Belgrade, Yugoslavia
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ورودعنوان ژورنال:
- IEEE Trans. Information Theory
دوره 37 شماره
صفحات -
تاریخ انتشار 1991