Codes and Cryptography - Welsh, Dominic (Fellow and Tutor in Mathematics, Fellow and Tutor in Mathematics, Merton College, Oxford)

Unifies the concepts of information, codes and cryptography as first considered by Shannon in his seminal papers on communication and secrecy systems. This book covers the ideas of information theory, compact encoding of messages, and an introduction to the theory of error-correcting codes, and includes many problems together with solutions.