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Horst Feistel is best known for his work on the Feistel network construction - a common method for constructing encryption algorithms. In 1977, he was recognized at the IBM Corporate Technical Recognition Event (CTRE) for "devising a scheme encrypting binary data which is especially significant to IBM products and is the basis for the recently announced Federal Information Processing Standard adopted by the U.S. Commerce Department." His work at IBM led to the development of the pioneering Lucifer and Data Encryption Standards (DES) ciphers, and as a result of his efforts, IBM announced the 3845 and 3846 data encryption devices and the IBM cryptographic subsystem.
Feistel earned a bachelor's and a master's degree in physics from MIT and Harvard, respectively. Before joining IBM, he worked with the U.S. Air Force Cambridge Research Center (AFCRC), MIT's Lincoln Laboratory and the Mitre Corporation.
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