This book constitutes the thoroughly refereed post-conference proceedings of the workshop on
Usable Security USEC 2013 and the third Workshop on Applied Homomorphic Cryptography WAHC
2013 held in conjunction with the 17th International Conference on Financial Cryptology and
Data Security FC 2013 in Okinawa Japan. The 16 revised full papers presented were carefully
selected from numerous submissions and cover all aspects of data security. The goal of the USEC
workshop was to engage on all aspects of human factors and usability in the context of
security. The goal of the WAHC workshop was to bring together professionals researchers and
practitioners in the area of computer security and applied cryptography with an interest in
practical applications of homomorphic encryption secure function evaluation private
information retrieval or searchable encryption to present discuss and share the latest
findings in the field and to exchange ideas that address real-world problems with practical
solutions using homomorphic cryptography.
