This course contains an introduction to the key concepts of cryptography and security engineering. It examines the role of encryption in information security and considers common encryption methods. In addition, the course discusses ciphers, their substitutes, and how they work. Public key infrastructure and management is also covered. This course requires a basic understanding of IT concepts. The content in this course aligns with Domain Three in the CISSP exam, offered by (ISC)2. However, the course can be taken as a stand-alone without the intention of sitting for the exam.