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Randomness measures related to subset occurrence. (English) Zbl 1421.94056
Dawson, Ed (ed.) et al., Cryptography: policy and algorithms. International conference, Brisbane, Queensland, Australia, July 3–5, 1995. Proceedings. Berlin: Springer. Lect. Notes Comput. Sci. 1029, 132-143 (1996).
Summary: Statistical tests have been applied to measures obtained from partitioning the keystream of a stream cipher into subsets of a given length. Similarly, the strength of a block cipher has been measured by applying statistical tests to subsets obtained from both the input and output blocks. There are problems in applying these tests as the size of the subsets increases. We propose a novel method based on the classical occupancy problem to deal with larger subsets in testing for randomness in a keystream in the case of a stream cipher and for independence between subsets of input and output blocks in the case of a block cipher.
For the entire collection see [Zbl 1422.94002].
MSC:
94A60 Cryptography
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