From encryption to digital signatures to electronic commerce to securevoting - cryptography has become the enabling technology that allows us totake existing business and social constructs and move them to computernetworks. But a lot of cryptography is bad, and the problem with badcryptography is that it looks just like good cryptography; most peoplecannot tell the difference. Security is a chain: only as strong as theweakest link. In this talk Bruce will take a look at the future ofcryptography: the needs, the threats, the limits of technology, and thepromise of the future.