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Block ciphers' security mostly depends on S-box which is the only non-linear structure in most block ciphers. This paper studies and compares the avalanche property of the AES S-box and Camellia S-box, finally confirms that the AES S-box and Camellia S-box both satisfy the strict avalanche criterion basically.
AS the unique nonlinear structure in most block ciphers, S-box accounts for the AES algorithm's security. Firstly, this paper introduces the cryptographic properties of the S box. Then a detail analysis of the avalanche effect of the AES S box and inverse S box are made. Lastly, the paper indicates that AES S box and inverse S box indeed have the good avalanche effect by detailed data.
The avalanche effect is an important performance that any block cipher must have. With the AES algorithm program and experiments, we fully test and research the avalanche effect performance of the AES algorithm, and give the changed cipher-bit numbers when respectively changing every bit of the plaintext and key in turn. The test results show that the AES algorithm has very good avalanche effect Performance...
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