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.
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