Limits RegistryPUBLIC RECORD
Limits RegistryBased on IBM's Lucifer cipher with modifications made in consultation with the NSA, the Data Encryption Standard was published as Federal Information Processing Standard 46 in January 1977. Its 56-bit key was criticized from the start by Diffie and Hellman, and DES was eventually superseded by AES in 2001.
The question, scope, and sources behind this Registry record.
Based on IBM's Lucifer cipher with modifications made in consultation with the NSA, the Data Encryption Standard was published as Federal Information Processing Standard 46 in January 1977. Its 56-bit key was criticized from the start by Diffie and Hellman, and DES was eventually superseded by AES in 2001.
The year DES became FIPS 46, the first publicly specified encryption algorithm endorsed by a government for civilian use.
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Current frontiers derived from accepted Claims.
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The frontier as it changed over time.
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Permanent ID limitsregistry.com/limits/LR-DES-FIRST-FEDERAL-STANDARD
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Limits Registry. LR-DES-FIRST-FEDERAL-STANDARD. First public civilian encryption standard (DES). 2026.