This paper presents a quasigroup encryptor that has very good scrambling properties. We show that the output of the encryptor maximizes the output entropy and the encrypted output for constant and random inputs is very similar. The system architecture of the quasigroup encryptor and the autocorrelation properties of the output sequences are provided.
—This paper presents a practical implementation of a quasigroup based multilevel, indexed scrambling transformation for use in signal authentication, encryption, and broadcasting applications in secret-key cryptography. Results of experiments with text and speech scrambling are presented. It is shown that the quasigroup transformation is very effective in… (More)