This book constitutes the thoroughly refereed post-conference proceedings of the 22nd
International Workshop on Fast Software Encryption held in Istanbul Turkey March 8-11 2015.
The 28 revised full papers presented were carefully reviewed and selected from 71 initial
submissions. The papers are organized in topical sections on block cipher cryptanalysis
understanding attacks implementation issues more block cipher cryptanalysis cryptanalysis of
authenticated encryption schemes proofs design lightweight cryptanalysis of hash functions
and stream ciphers and mass surveillance.
