This book constitutes the proceedings of the 14th IMA International Conference on Cryptography and Coding IMACC 2013 held at Oxford UK in December 2013. The 20 papers presented were carefully reviewed and selected for inclusion in this book. They are organized in topical sections named: bits and booleans; homomorphic encryption; codes and applications; cryptanalysis; protecting against leakage; hash functions; key issues and public key primitives.