Matt Blaze is a research scientist at AT&T Laboratories, where he studies the use of cryptography in computing and network security.  His research focuses on the architecture and design of secure systems based on cryptographic techniques, analysis of secure systems against practical attack models, and on finding new cryptographic primitives and techniques.   He is the co-inventor of the field of "trust management" and leads the KeyNote project at AT&T Laboratories.  His recent work and collaborations have led to the creation of a number of new cryptographic concepts, including Remotely-Keyed Encryption, Atomic Proxy Cryptography,
and Master-Key Cryptography.  His research has also been influential in IP network-layer encryption (co-designer of the swIPe protocol, a predecessor of the IPSEC standard), session-layer encryption, and filesystem encryption. Blaze has discovered weaknesses in a number of published and fielded security systems, including a protocol failure in the U.S. "Clipper" key escrow system.  Blaze has been long been active in the debate on encryption and security policy, has testified
before Congress several times, and has participated a number of influential public-policy panels and reports.  He holds a PhD in Computer Science from Princeton University.