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)
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. This guide covers the and its more secure
Uses a Feistel network consisting of 16 rounds of processing. XOR with a subkey