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X-WR-CALDESC:Horst Feistel was a German-born cryptographer. He worked on th
 e design of ciphers at IBM and received awards for his cryptographic work.
  His research at IBM led to the development of the Lucifer and Data Encryp
 tion Standard (DES) ciphers. Feistel was one of the earliest non-governmen
 t researchers to study the design and theory of block ciphers. on 19 March
  1974\, he received a patent for 'Block Cipher Cryptographic System\,' an 
 encryption scheme that laid the foundation for the Data Encryption Standar
 d (DES). \n\nPhoto and excerpt via Wikipedia.
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DTSTART:20251102T020000
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DTSTAMP:20260424T064308Z
DESCRIPTION:Horst Feistel was a German-born cryptographer. He worked on the
  design of ciphers at IBM and received awards for his cryptographic work. 
 His research at IBM led to the development of the Lucifer and Data Encrypt
 ion Standard (DES) ciphers. Feistel was one of the earliest non-government
  researchers to study the design and theory of block ciphers. on 19 March 
 1974\, he received a patent for 'Block Cipher Cryptographic System\,' an e
 ncryption scheme that laid the foundation for the Data Encryption Standard
  (DES). \n\nPhoto and excerpt via Wikipedia.
DTSTART;TZID=America/New_York:20260319T000000
DTEND;TZID=America/New_York:20260319T235900
LOCATION:
SUMMARY:1974: Horst Feistel received a patent for 'Block Cipher Cryptograph
 ic System.'
END:VEVENT
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