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The authors present a new quasi-group based block encryption system with and without cipher-block-chaining. They compare its performance against Advanced Encryption Standard-256 (AES256) bit algorithm using the NIST Statistical Test Suite (NIST-STS) that tests for randomness of a sequence. Since it is well known that a good encryption algorithm must destroy any statistical properties of the input sequence and produce an output close to a true random sequence, the NIST-STS suite results provide a good test bench. In almost all tests from the suite the proposed algorithm performs better than AES256.
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