Feistel cipher is also called Luby-Rackoff block cipher, which is used to construct a symmetric structure of block encryption algorithm. It was invented by the German cryptographer Horst Feistel while working at IBM. Feistel cipher is also called Feistel network. Many block encryption algorithms are...
whereandare twon-bit halves of the state. This model of Feistel design was named the Key-Alternating Feistel (KAF) cipher by Lampe and Seurin [26]. One can see that two rounds of aKAFcipher can be rewritten as a single-key one-roundEMcipher, where the permutationPis a two-round public...
The calculation of the AE for our cipher scheme, shows that all the values are in [73.96, 74.02]. This ensures that a single bit change significantly affects the encrypted image. 4.4.5 Performance time Table 5 illustrates the encryption and decryption times. These times are very similar...