#ciphertext — Public Fediverse posts

Schneier on Security: 1965 Cryptanalysis Training Workbook Released by the NSA. “The listings in the report are printouts from the Stethoscope program, run on the NSA’s Bogart computer, showing statistical and structural data extracted from encrypted messages, but the encrypted messages themselves are not included. They were used in NSA training programs to teach analysts how to interpret […]

https://rbfirehose.com/2025/09/04/schneier-on-security-1965-cryptanalysis-training-workbook-released-by-the-nsa/