Cryptography Basics: Symmetric and Asymmetric Encryption

This lecture covers the basics of cryptography, including symmetric and asymmetric encryption. It delves into topics such as stream ciphers, block ciphers, and operation modes. The instructor explains the importance of data integrity, authentication, and non-repudiation in secure communication. Historical developments in cryptography, from Caesar's Cipher to modern algorithms like AES and ECC, are discussed. The lecture also explores the vulnerabilities of encryption methods, the impact of quantum computing on cryptography, and the role of public-key infrastructure in ensuring secure communication over the internet.