This book constitutes the thoroughly refereed post-conference proceedings of the 17th International Conference on Financial Cryptography and Data Security (FC 2013) held at Bankoku Shinryokan Busena Terrace Beach Resort Okinawa Japan April 1-5 2013. The 14 revised full papers and 17 short papers were carefully selected and reviewed from 125 submissions. The papers are grouped in the following topical sections: electronic payment (Bitcoin) usability aspects secure computation passwords privacy primitives and non-repudiation anonymity hardware security secure computation and secret sharing authentication attacks and countermeasures privacy of data and communication and private data retrieval.