Des And 3des -

The inverse of the initial permutation to produce the final ciphertext. 2. Triple DES (3DES)

Each of the 16 rounds involves expansion, XOR with a subkey, substitution (via S-boxes), and permutation. DES and 3DES

This guide covers the and its more secure successor, Triple DES (3DES) . Both are symmetric-key block ciphers that encrypt data in 64-bit blocks. 1. Data Encryption Standard (DES) The inverse of the initial permutation to produce