TLS and Certificate Authorities

This lecture covers the history and evolution of Transport Layer Security (TLS) protocols, including SSL versions, leading up to TLS 1.3. It explains the importance of using up-to-date encryption methods, the role of certificate authorities in establishing trust between clients and servers, and the vulnerabilities associated with outdated encryption standards. The lecture also discusses the concept of forward secrecy and the challenges posed by man-in-the-middle attacks in the context of TLS. Additionally, it explores the implementation of TLS in HTTPS, the significance of root certificates, and the introduction of Let's Encrypt project to promote widespread adoption of TLS. The lecture concludes with real-world examples of certificate-related attacks and the measures taken to mitigate such security risks.