Applied Cryptography: 3. Hash functions and HMAC

Lecture 3: Cryptographic hash function and its properties, brute-force attack and security level, security of server-side password hashing, commitment scheme, hash-based PRNG, hash chain, hash tree (Merkle tree), Hash-based Message Authentication Code (HMAC) 00:00 Introduction 00:12 Hash function 03:09 Cryptographic hash function 07:02 Security Level 11:08 Cryptographic hash functions 14:56 Data identification and integrity verification 19:29 Server-side password storage 30:57 Commitment scheme 36:13 Coin flipping over phone 38:20 Hash-based PRNG 41:05 Hash chain 44:06 Hash tree (Merkle tree) 47:01 HMAC: Hash-based Message Authentication Code 50:49 Questions 50:56 Task: HMAC 52:19 DigestInfo 53:18 Task: HMAC 55:06 Task: Test cases 56:01 pyasn1 library for decoding DER University of Tartu, MTAT.07.017 Applied Cryptography, Spring 2024 Instructor: Arnis Parsovs View the complete course: https://courses.cs.ut.ee/2024/appcrypto/spring