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Digraph probabilities


Frequencies of occurrence of each of the possible 256*256=2^16 pairs of consecutive output bytes (Output[x], Output[x+1]) were measured in a stream of 2^40.1 output bytes generated by the VMPC Stream Cipher. With consideration of the fact that 65536 variables were tested - none of the measured frequencies showed a statistically significant deviation from its expected value of 1 / 65536.

by Bartosz Zoltak

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