Des And 3des ✰

56-bit effective key length (plus 8 parity bits for a total of 64 bits). Block Size: 64 bits. Process Steps:

Rearranges the 64 bits of the input block. DES and 3DES

Each of the 16 rounds involves expansion, XOR with a subkey, substitution (via S-boxes), and permutation. 56-bit effective key length (plus 8 parity bits