100 Results
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SATURDAY EVENING POST ARTICLE ENTITLED 'ARE WE STIFLING THE INVENTORS?'
https://www.nsa.gov/news-features/declassified-documents/friedman-documents/assets/files/publications/FOLDER_500/41784819082384.pdf
Date: March 28, 2018
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AMERICAN ARMY FIELD CODES IN THE AMERICAN EXPEDITIONARY FORCES DURING THE FIRST WORLD WAR
https://www.nsa.gov/news-features/declassified-documents/friedman-documents/assets/files/publications/FOLDER_267/41784809082383.pdf
Date: March 28, 2018
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GERMAN MILITARY CIPHERS FROM FEBRUARY TO NOVEMBER 1918
https://www.nsa.gov/news-features/declassified-documents/friedman-documents/assets/files/publications/FOLDER_268/41784789082381.pdf
Date: March 28, 2018
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GENERAL SOLUTION FOR THE ADFGVX CIPHER SYSTEM
https://www.nsa.gov/news-features/declassified-documents/friedman-documents/assets/files/publications/FOLDER_269/41784769082379.pdf
Date: March 28, 2018
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STUDIES IN GERMAN DIPLOMATIC CODES EMPLOYED DURING THE (FIRST) WORLD WAR
https://www.nsa.gov/news-features/declassified-documents/friedman-documents/assets/files/publications/FOLDER_270/41784749082377.pdf
Date: March 28, 2018
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MILITARY CRYPTANALYSIS, PART III: APERIODIC SUBSTITUTION SYSTEMS
https://www.nsa.gov/news-features/declassified-documents/friedman-documents/assets/files/publications/FOLDER_511/41784459082351.pdf
Date: March 28, 2018
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ARMY EXTENSION COURSES: SUB COURSE -- MILITARY CRYPTANALYSIS PART II: SIMPLER VARIETIES OF POLYALPHABETIC SUBSTITUTION SYSTEMS
https://www.nsa.gov/news-features/declassified-documents/friedman-documents/assets/files/publications/FOLDER_509/41784369082342.pdf
Date: March 28, 2018
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MILITARY CRYPTANALYSIS, PART II, SIMPLER VARIETIES OF POLYALPHABETIC SUBSTITUTION SYSTEMS
https://www.nsa.gov/news-features/declassified-documents/friedman-documents/assets/files/publications/FOLDER_508/41784299082338.pdf
Date: March 28, 2018
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THE PRODUCTION AND DETECTION OF MESSAGES IN CONCEALED WRITING AND IMAGES
https://www.nsa.gov/news-features/declassified-documents/friedman-documents/assets/files/publications/FOLDER_507/41783979082304.pdf
Date: March 28, 2018
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METHODS FOR THE RECONSTRUCTION OF PRIMARY ALPHABETS
https://www.nsa.gov/news-features/declassified-documents/friedman-documents/assets/files/publications/FOLDER_507/41783829082288.pdf
Date: March 28, 2018