Des And 3des �1080p • FHD�

Uses a Feistel network consisting of 16 rounds of processing.

The inverse of the initial permutation to produce the final ciphertext. 2. Triple DES (3DES) 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) Uses a Feistel network consisting of 16 rounds of processing

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

Developed in the 1970s, DES was the global standard for decades before its 56-bit key became vulnerable to modern brute-force attacks.

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