Everything you need to know about crypto in 10 easy minutes
Crypto is concerned with more than just secrecy
- Traditional (secret-key) cryptography (ca 2000BC)
- secrecy: keeping message content secret
- integrity: keeping messages tamper-free
- Public-key cryptography (ca. AD1975)
- secrecy without pre-agreement
- signature: determining origin of messages
Mathematical abstraction: security primitives
- secret-key ciphers, MAC functions, secure hash functions, public-key cryptosystems, signature schemes