ON STATISTICAL ANALYSIS OF SYNCHRONOUS STREAM CIPHERS
Sönmez Meltem, Onmez Turan · 2008
Synchronous stream ciphers produce long keystreams to be XORed with plaintext. The output keystreams should be indistinguishable from truly random sequences and should not leak any information about the secret key and the internal state of the cipher. In this study, we propose six new statistical tests to evaluate the randomness properties of synchronous stream ciphers. We applied four of these tests to the ciphers presented to ECRYPT and tabulated the results.