Des And 3des – Authentic & Legit

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

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

Rearranges the 64 bits of the input block. Each of the 16 rounds involves expansion, XOR