Cryptography Methods
Classical Ciphers (Pre-20th Century)
- Caesar Cipher
- Atbash Cipher
- Affine Cipher
- Simple Substitution Cipher
- Homophonic Substitution Cipher
- Vigenère Cipher
- Beaufort Cipher
- Autokey Cipher
- Scytale
- Rail Fence Cipher
- Columnar Transposition
- Route Cipher
- Book Cipher
- Grille Cipher
- Pigpen Cipher
- Playfair Cipher
Early 20th Century
- Enigma Machine
- SIGABA
- Typex
- Hebern Rotor Machine
- Hagelin M-209
- One-time Pad
- Double Transposition Cipher
- ADFGVX Cipher
World War II & Early Computer Era
- Lorenz Cipher
- SIGSALY
- DES (1977)
- Lucifer
- Diffie-Hellman Key Exchange
- RSA
- Merkle-Hellman Knapsack
Modern Cryptography
- Symmetric-Key Algorithms
- DES (Modern Context)
- Triple DES
- AES
- Blowfish & Twofish
- IDEA
- Serpent, RC5, RC6, CAST
- RC4
- Salsa20 & ChaCha20
- A5/1 & A5/2
- Public-Key Cryptography
- ECC (ECDSA, ECDH)
- ElGamal Encryption
- DSA
- CRYSTALS-Kyber
- CRYSTALS-Dilithium
- Falcon, SPHINCS+
- NTRU, McEliece
Hash Functions
- Hash Functions
- MD5
- SHA-1
- SHA-2
- SHA-3
- BLAKE2 & BLAKE3
- HMAC
- Poly1305
Key Exchange Protocols
- Diffie-Hellman
- Post-Quantum Key Exchange
- Secure Remote Password (SRP)