This book constitutes the thoroughly refereed post-proceedings of the 12th International Workshop on Selected Areas in Cryptography, SAC 2005, held in Canada in August 2005. The 25 revised full papers presented were carefully reviewed and selected from 96 submissions for inclusion in the book. The papers are organized in topical sections.

This book constitutes the thoroughly refereed post-proceedings of the 7th Annual International Workshop on Selected Areas in Cryptography, SAC 2000, held in Waterloo, Ontario, Canada, in August 2000.The 24 revised full papers presented were selected from 41 submissions and have gone through two rounds of reviewing and revision. The papers are organized in topical sections on cryptanalysis, block ciphers: new designs, elliptic curves and efficient implementations, security protocols and applications, block ciphers and hash functions, Boolean functions and stream ciphers, and public key systems.

This book constitutes the thoroughly refereed post-workshop proceedings of the 5th Annual International Workshop on Selected Areas in Cryptography, SAC '98, held in Kingston, Ontario, Canada in August 1998.
The 26 revised full papers presented together with two invited papers were carefully selected from 39 submissions after two rounds of reviewing and revision. The book is divided in topical sections on designs of secret key cryptosystems, randomness and computational issues, analysis of secret key cryptosystems, cryptographic systems, design and implementation of secret key cryptosystems, and attacks on secret key cryptosystems.