Lecture
This lecture covers the fundamentals of public-key cryptography, focusing on post-quantum cryptosystems and access control mechanisms. The instructor discusses digital signature schemes, EF-CMA security, and various public-key cryptosystems like RSA, Rabin, and ECC. The lecture delves into NTRUEncryption as an example, the Regev Public-Key Cryptosystem, and meta cryptosystems. It also explores lattice-based cryptography, hybrid encryption, key encapsulation mechanisms, and commitment schemes. The systematic classification of cryptography, references, and practical examples are provided. Additionally, the lecture addresses trust establishment through access control and password-based cryptography, emphasizing protocols, salt usage, and UNIX password systems.