Month: August 2021
Overall structure – Block Ciphers and Their Modes of Operation
14.3.1 Overall structure AES has a fixed block length of 128 bits and, as required by the initial call for algorithms, a flexible key length of 128, 192, or 256 bits. AES is a substitution-permutation network consisting of 10, 12, or 14 rounds, depending on the key length. The 128 plaintext bits are arranged in…
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