Secure Communications: TLS and Security Protocols

This lecture covers the setup of secure channels and secure communications, focusing on the Transport Layer Security (TLS) protocol. It discusses the use of block ciphers, padding oracle attacks, security properties of communication channels, session integrity, and fair termination problems. The instructor explains synchronization protocols like Keep-in-Touch (KiT) and their security implications. Additionally, it explores the history of TLS versions, cipher suites, key exchanges, and the TLS 1.3 protocol. Various applications of secure communications are presented, including Personal Area Network setup, Voice over IP using ZRTP, P2P PGP channel setup, and disaster recovery scenarios.