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  5. Estimation of periodicity of algorithm of encipherement at unzero values of index elements

Estimation of periodicity of algorithm of encipherement at unzero values of index elements

R.V. Korolev, D.A. Volkov
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Researches of algorithm of stream encipherement of RС4 are in-process conducted at unzero values of index elements. Lengths of periods of pseudocasual numbers are determined with the limited period. It is set that exists dependence of placing of single element in S-blok with the values of index elements at which is formed sequence with the limited period.
Keywords: generator of pseudocasual numbers, algorithm of current encipherement, RC4