Abstract: No polynomial classical algorithms can distinguish between the 3-round Feistel cipher with internal permutations and a random permutation. It means that the 3-round Feistel cipher with ...

This is a Python library implementing the Feistel cipher for Format-Preserving Encryption (FPE). The main objective of this library is not to provide a secure encryption scheme but rather a safe ...

Block ciphers, a branch of modern cryptography, are playing a more prominent role in protecting information security as 5G technology develops. Although encryption algorithms of the traditional ...