Code-based cryptography (CBC) is one of the well-known post-quantum cryptography primitives and secured its position in the outcome of 3rd round NIST competition as one of the finalist encryption schemes. One of its most promising applications is the design of cryptographic schemes with exceptionally strong security guarantees and other desirable properties. In this course we will mainly study the basics of some public-key encryption schemes based on McEliece and the Niederreiter encryption schemes