This book presents the best readings on cryptographic policy and current cryptography trends. Topics include a survey of cryptography, the new "key escrow" systems, the Government solution, the debate between law enforcement views and civil liberties, and export control analysis. Detailed technological descriptions of promising new software schemes are included as well as analysis of the constitutional issues by legal scholars. Important government cost analyses appear here for the first time in any book. Other highlights include the text of the new US digital telephony law and the pending encryption regulation bill and a list of hundreds of cryptographic products available around the world. There is even a paper on how to commit the perfect crime electronically, using public key encryption.