• Feb 24, 2026 Applied Cryptography For Cyber Security And Defense Information Encryption And Cyphering de Rail Fence cipher and Columnar transposition cipher 3 Block Ciphers Divide plaintext into blocks of fixed size and encrypt each block independently Examples include AES and DES 4 Stream Ciphers Encrypt plaintext bitbybit often using a keystream generated from a secret key Examples include By Lloyd Douglas PhD
