cryptography

Cryptography is the practice and study of techniques for secure communication in the presence of adversarial behavior.

Classic Ciphers

• Caesar Cipher
• Vigenère Cipher
• One-time Pad

Encryption

See: Encryption

• Symmetric Key Encryption
• Public-Key Encryption
  • RSA

Message Authentication

• Message Authentication Code (MAC)
• Digital Signature

Hash Functions

• Cryptographic Hash Functions - MD5, SHA
• Salt - for password hashing

Key Change

See: Key Exchange

• Diffie-Hellman

Cryptographic Protocols

• TLS and HTTPS
• SSH

Other Topics

• Block Ciphers and Stream Ciphers

Related

• number theory