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What is DES Initial and Expansion Permutation Tables about?

This Java code implements the Data Encryption Standard (DES) algorithm for encrypting and decrypting data. It includes constants, functions, and classes for the key schedule, initial/final permutations, expansion/permutation boxes, substitution boxes, and rounds that comprise the DES cipher. The main functions are for generating the round keys from an input key, performing the encryption rounds on plaintext using those keys, and utility methods for binary/hexadecimal conversion and permutations.

Author

Digital Nikhil

Language

EN