Cryptography
Explore arithmetic and security models; encryption and authentication; groups, signatures and hashes. Concepts and connections are available independently of video coverage.
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Symmetric encryption
A shared secret key supports encryption and decryption under a specified scheme.
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Diffie–Hellman key agreement
Parties derive a shared secret through group exponentiation; authentication is needed against interception.
Elliptic curve cryptography
Finite-field elliptic curve groups support cryptography based on hard discrete logarithms.
Modular arithmetic
Congruence identifies integers with the same remainder modulo a positive integer.
Public-key encryption
Public encryption keys and private decryption keys have different roles.
Chinese remainder theorem
Pairwise coprime moduli give a unique combined congruence class modulo their product.
Knowledge connections
- Public-key encryption · Related · Map context
- Diffie–Hellman key agreement · Related · Map context
- Modular arithmetic · Related · Map context
- Elliptic curve cryptography · Related · Map context