NSA Cryptanalysis History (1937-1987)
- The National Security Agency (NSA) has declassified "Fifty years of Mathematical Cryptanalysis (1937-1987)," a report by Glenn F.
- Interestingly,this marks the second time the NSA has declassified this particular document.
- The declassification of this report may provide further insights into the history of cryptanalysis and mathematics within the NSA.
Uncover the NSA‘s hidden history: The recently declassified “Fifty years of Mathematical Cryptanalysis (1937-1987)” offers a rare glimpse into the agency’s early cryptologic efforts. This second release of the report, secured via FOIA, sheds fresh light on the evolution of cryptanalysis and the role of mathematics at the NSA. This version, boasting fewer redactions than the 2019 release, promises deeper insights. News Directory 3 is following the story to help you understand the details. Analyze the key takeaways in the report. Discover what’s next as experts dig deeper to uncover more secrets within these groundbreaking documents.
NSA Releases “Fifty Years of Mathematical Cryptanalysis” Report
Updated May 29, 2025
The National Security Agency (NSA) has declassified ”Fifty years of Mathematical Cryptanalysis (1937-1987),” a report by Glenn F. Stahly. The release follows a Freedom of Facts Act (FOIA) request, though some portions of the document remain redacted.
Interestingly,this marks the second time the NSA has declassified this particular document. A previous version was obtained by John Young in 2019. This latest release contains even fewer redactions than the earlier version, and no information provided in 2019 has been redacted this time.
What’s next
The declassification of this report may provide further insights into the history of cryptanalysis and mathematics within the NSA. Further analysis of the document is expected.