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This Federal Register Notice was NBS/NIST's initial solicitation for developing a public standard for encryption. The end result of this multi-year effort was the issuance of the Data Encryption Standard (DES) in 1977 as FIPS 46.
This FRN redesignated fourteen Federal Telecomm Standards (FED-STD) as FIPS, including FED-STDs 1026, 1027, and 1028, which became FIPS 139, 140, and 141, respectively.
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