1970 Civ Feistel
Dr. Horst Feistel led a research project at the IBM Watson Research Lab in the 1960's which developed the Lucifer cipher. This later inspired the US DES and other product ciphers, creating a family labeled ``Feistel ciphers''.
1976 civ/govt FIPS PUB-46
A design by IBM, based on the Lucifer cipher and with changes (including both S-box improvements and reduction of key size) by the US NSA, was chosen to be the U.S. Data Encryption Standard. It has since found worldwide acceptance, largely because it has shown itself strong against 20 years of attacks. Even some who believe it is past its useful life use it as a component -- e.g., of 3-key triple-DES.
It's in your credit cards, driver license, internet passwords,atm/debit cards, etc etc. Funny huh??