Performance Analysis of AES and MARS Encryption Algorithms
Block ciphers are very important in communication systems as
they provide confidentiality through encryption. The popular
block ciphers are Advanced Encryption Standard (AES) and
MARS algorithms. Each cipher uses several rounds of fixed
operations to achieve desired security level. The security level is
measured in terms of diffusion and confusion. The diffusion level
should be at least equal to strict avalanche criterion (SAC) value.
Therefore, the number of rounds are chosen such that the
algorithm provides the SAC value. This paper presents measured
diffusion value of AES and MARS algorithms. Diffusion values
are compared for both the algorithms: AES and MARS. Similarly,
speed of each algorithm is compared.
Keywords: AES, MARS, SAC, block ciphers
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