This course is a continuation of the course Introduction to Cryptography (89-656), with a focus on topics that are of importance in practice, but are not covered in the introductory course due to lack of time. Material will be taken from Introduction to Modern Cryptography by Lindell-Katz, and from A Graduate Course in Applied Cryptography by Boneh-Shoup. The course consists of 12-13 lectures of two hours each.