RSA: Public Key Cryptography

This lecture covers the concept of asymmetric cryptography using public keys, focusing on the RSA algorithm. It explains how to construct and use a public-private key pair to encrypt messages. The lecture also delves into the security aspects of RSA, including the difficulty of factoring large prime numbers and the importance of key distribution. Additionally, it discusses the significance of digital signatures for ensuring data integrity and authentication. The use of hash functions, such as MD5, for data integrity verification is also explored, along with the risks associated with password security and dictionary attacks.