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Files W.F.F. Archive Patent and Equipment Records Memoranda and Reports Related to Policies on the Use of SIGABA/ECM (Electric Ciphering Machines), 1940-1952
Analysis and Discussions of Present and Future Status of CCM
Document A2435932
79.68 KiB
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Analysis and Discussions of Present and Future Status of CCM
Document A272444
36.97 KiB
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Analysis and Discussions of Present and Future Status of CCM
Document A272446
55.14 KiB
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Analysis and Discussions of Present and Future Status of CCM
Document A272447
47.75 KiB
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Army-Navy Joint Policy Concerning Distribution and Disclosure of Cryptographic Design of the ECM-M134c
Document A272422
63.49 KiB
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Army/Navy Conference on CCM Modification
Document A2435934
416.8 KiB
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Background of Policy In Regard to Making SIGABA Available to the British
Document A2435719
475.03 KiB
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British Use of SIGABA
Document A2435758
57 KiB
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CCM Modification
Document A2435939
322 KiB
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Collaboration Between British and U.S. on Development of A New Combined Cipher Machine
Document A2435929
139.05 KiB
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Comments on Army Proposals Regarding the CCM
Document A2435941
149.79 KiB
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Conference on Joint U.S. and British Cryptographic Systems
Document A2435740
77.46 KiB
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Conversation with British Representative Concerning Cryptographic Devices
Document A2435773
77.82 KiB
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Directive to G-2 Covering Interchange of Secret Technical Information with Representatives of British Government
Document A272416
38.83 KiB
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Establishment of Joint Cryptographic Systems for the United States and Great Britain
Document A2435737
122.41 KiB
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Establishment of Joint U.S. and British Encrypted Communications
Document A2435743
242.15 KiB
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Exchange of Cryptographic Information with Great Britain
Document A2435729
122.87 KiB
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Exposure of SIGABA to Viewing by British Personnel
Document A2435749
80.43 KiB
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Extract from Summary of Messages Exchanged on Loss of Cryptographic Material at Bhamo, Burma
Document A272428
73.75 KiB
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Handling and Distribution of Messages Concerning Combined Subjects
Document A2435771
97.86 KiB
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Interchange of Technical Cryptanalytic Information Between the British and American Armies
Document A272418
77.48 KiB
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Meeting with UK Representatives: U.S. and British Joint Cryptographic Systems
Document A2435798
83.01 KiB
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Minutes of Army/Navy Meeting on CCM Modification
Document A2435945
445.68 KiB
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Modification of Combined Cipher Machine
Document A2435947
110.46 KiB
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Policy In Regard to Making ECM Available to the British
Document A2435745
257.96 KiB
PDF
Policy on SIGABA/ECM
Document A2437279
112.08 KiB
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Preliminary Discussions Generating the British Request for (1) Complete Interchange of Cryptographic Development Programs or (2) Release to the British of the Principles of the SIGABA
Document A2435952
104.88 KiB
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Preliminary Meeting Re Forthcoming Visit of Paymaster-Captain Wilson
Document A2435776
108.53 KiB
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Proposed Exchange Basis with the British
Document A2435726
144.95 KiB
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Standardization of Security Practices
Document A2435764
59.99 KiB
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State Department Use of Cipher Machine Electrical Stepping
Document A272413
56.16 KiB
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U.S. and British Collaboration on Combined Cipher Machine Development
Document A2435927
246.07 KiB
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U.S. and British Collaboration on Combined Cipher Machine Development
Document A2435931
56.13 KiB
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U.S. and British Collaboration on Combined Cypher Machine Development
Document A2435924
281.71 KiB
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U.S. and British Combined Cipher Machine Meeting
Document A2435917
182.99 KiB
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U.S. and British Discussions for A New Combined Cipher Machine
Document A2435800
95.33 KiB
PDF
U.S. and British Discussions on A New Combined Cipher Machine
Document A2435802
96.42 KiB
PDF
U.S. Comments on Proposed British Rm26/32 Cipher Machine
Document A2435919
90.6 KiB
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Wiring Diagrams: Scrambler Unit
Document A2437273
454.18 KiB
PDF
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