This book constitutes the thoroughly refereed post-proceedings of the 10th International Conference on Financial Cryptography and Data Security, FC 2006, held in Anguilla, British West Indies in February/March 2006.

The 19 revised full papers and 6 revised short papers presented were carefully reviewed and selected from 64 submissions. The papers are organized in topical sections on authentication and fraud detection, privacy, reputation and mix-nets, conditional financial cryptography, payment systems, and efficient protocols.