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Horst FeistelHorst Feistel (30 January 1915(1) - 14 November 1990) was one of the first non-government researchers in modern cryptography. He lends his name to the Feistel network construction — a common method for constructing encryption algorithms — and his work at IBM led to the development of the pioneering Lucifer and Data Encryption Standard (DES) ciphers. He could easily be considered the father of modern block ciphers: he was the first cryptographer to publish designs and theory on the topic. Life and work Feistel was born in Berlin in 1915, and moved to the United States in 1934. During World War II, he was placed under house arrest, but at the end of the war he soon became a US citizen on 31 January 1944. The following day he was granted a security clearance and began work for the US Air Force Cambridge Research Center (AFCRC) on Identification Friend or Foe (IFF) devices until the 1950s. He was subsequently employed at MIT's Lincoln Laboratory, then the Mitre Corporation, and finally IBM, where he received an award for his cryptographic work. Feistel obtained a Bachelor's degree at MIT, and his Master's at Harvard, both in Physics. He married his wife Leona in 1945, with whom he had a daughter. References - Whitfield Diffie, Susan Landau (1998). Privacy on the Line: The Politics of Wiretapping and Encryption.
- Horst Feistel, "Cryptography and Computer Privacy", Scientific American, Vol. 228, No.5, 1973. (JPEG format scanned)
- Horst Feistel, H, W. Notz, J. Lynn Smith. "Some cryptographic techniques for machine-to-machine data communications", IEEE proceedings, 63(11), 1545–1554, 1975.
- Levy, Steven - , 2001.
External links Notes (1) Both (Diffie and Landau, 1998), and (Levy, 2001) give Feistel's birth year as 1914. The dates included here are based on the genealogical notes. Feistel, Horst Feistel, Horst Feistel, Horst
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