This module presents an introduction to the science of Cryptography. It discusses the importance of cryptography and its relevance in the context of the current digital age. You will learn about the features of symmetric key cryptography such as perfect security, stream ciphers, message authentication codes and more.

In this module, the approaches that are currently in use in modern cryptography will be discussed. Semantic security in the context of various cybersecurity attack models will be defined. You will also be introduced to reduction-based proofs and pseudo-random generators.