The National Security Agency declassified letters written by Nash in the 1950s, in which he had proposed a new encryption–decryption machine
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The National Security Agency declassified letters written by Nash in the 1950s, in which he had proposed a new encryption–decryption machine
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-16 from Wikipedia. The archived copy is preserved so this citation survives link rot.