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.
generator of pseudocasual numbers, algorithm of current encipherement, RC4
"Otsinka periodychnosti alhorytmu potokovoho shyfruvannia pry nenulovykh znachenniakh indeksnykh elementiv" [Estimated frequency streaming encryption algorithm with non-zero index elements],
Information Processing Systems,