Ralph Merkle

Ralph Merkle
Ralph Merkle at the Singularity Summit 2007
Born	February 2, 1952 (1952-02-02)
Citizenship	American
Nationality	American
Fields	Public key cryptography, Molecular nanotechnology, and Cryonics
Institutions	Singularity University Alcor Life Extension Foundation Institute for Molecular Manufacturing

Ralph C. Merkle (born February 2, 1952) is a researcher in public key cryptography, and more recently a researcher and speaker on molecular nanotechnology and cryonics. Merkle appears in the science fiction novel The Diamond Age, involving nanotechnology.

Early life and education

Merkle graduated from Livermore High School in 1970 and proceeded to study Computer Science at the University of California, Berkeley, obtaining his B.A. in 1974, and his M.S. in 1977. In 1979 he received his Ph.D. in Electrical Engineering at Stanford University, with a thesis entitled Secrecy, authentication and public key systems. His advisor was Martin Hellman.

Career

He was the manager of compiler development at Elxsi from 1980. In 1988, he became a research scientist at Xerox PARC. In 1999 he became a Nanotechnology Theorist for Zyvex. In 2003 he became a Distinguished Professor at Georgia Tech, where he led the Georgia Tech Information Security Center. In 2006 he returned to the Bay Area, where he has been a Senior Research Fellow at IMM, a faculty member at Singularity University, and a Board member of the Alcor Life Extension Foundation. He was awarded the IEEE Richard W. Hamming Medal in 2010.

Merkle devised a scheme for communication over an insecure channel: Merkle's Puzzles. He co-invented the Merkle–Hellman knapsack cryptosystem, Merkle–Damgård construction, and invented Merkle trees. While at Xerox PARC, Merkle designed the Khufu and Khafre block ciphers, and the Snefru hash function.

Personal

Ralph Merkle is the grandnephew of baseball star Fred Merkle, the son of Theodore Charles Merkle, director of Project Pluto and the brother of Judith Merkle Riley, a historical writer. Merkle is married to Carol Shaw, the video game designer best known for her game, River Raid'

TV interviews

• Interview at Google Videos (Adobe Flash video) in the Death in the Deep Freeze documentary (August 2, 2006)

Further reading

• Ralph C. Merkle, Secrecy, authentication, and public key systems (Computer science), UMI Research Press, 1982, ISBN 0-8357-1384-9.
• Robert A. Freitas Jr., Ralph C. Merkle, Kinematic Self-Replicating Machines, Landes Bioscience, 2004, ISBN 1-57059-690-5.
• Paul Kantor (Ed), Gheorghe Mureşan (Ed), Fred Roberts (Ed), Daniel Zeng (Ed), Frei-Yue Wang (Ed), Hsinchun Chen (Ed), Ralph Merkle (Ed), "Intelligence and Security Informatics" : IEEE International Conference on Intelligence and Security Informatics, ISI 2005, Atlanta, GA, USA, May 19–20, ... (Lecture Notes in Computer Science), Springer, 2005, ISBN 3-540-25999-6.

External links

• Ralph Merkle's personal website
• Ralph Merkle's video introduction to Molecular Nanotechnology on YouTube
• First document describing public key cryptography
• Oral history interview with Martin Hellman Oral history interview 2004, Palo Alto, California. Charles Babbage Institute, University of Minnesota, Minneapolis. Hellman describes his invention of public key cryptography with collaborators Whitfield Diffie and Ralph Merkle at Stanford University in the mid-1970s. He also relates his subsequent work in cryptography with Steve Pohlig (the Pohlig-Hellman system) and others. Hellman addresses the National Security Agency’s (NSA) early efforts to contain and discourage academic work in the field, the Department of Commerce’s encryption export restrictions, and key escrow (the so-called Clipper chip). He also touches on the commercialization of cryptography with RSA Data Security and VeriSign.
• Merkle's Ph.D. thesis
• The First Ten Years of Public-Key Cryptography Whitfield Diffie, Proceedings of the IEEE, vol. 76, no. 5, May 1988, pp: 560-577 (1.9MB PDF file)
• Who's Who in the Nanospace