Cryptography
Hashing
Integrity, not secrecy.
- •150 XPWhat Is a Hash?One-way, deterministic, avalanche.
- •150 XPCollision ResistanceThe birthday paradox, and why N bits only buys N/2 security.
- •150 XPThe SHA FamilySHA-1 (broken), SHA-2, SHA-3.
- •150 XPHMACIntegrity + authenticity with a shared key.
- •200 XPMerkle TreesProve one leaf in O(log N) without shipping the whole set.