TICOM report D-83 ‘Summary of Work Done on Typex Traffic by OKH/In 7/VI,...
Uploaded at arcre.com
View ArticleAnother correction
After the release of TICOM report D-83, in The British Typex cipher machine I’ve changed the paragraph‘In the period 1940-41 the cipher research department of the German Army’s signal intelligence...
View ArticleTICOM DF-196
The NSA FOIA/MDR office has declassified the TICOM report DF-196 ‘Report on Russian decryption in the former German Army’.Google drive link
View ArticleTICOM report DF-217
I’ve uploaded TICOM report DF-217 ‘Russian cipher device K-37’, written by dr Grimmsen. Also added a summary and pics in The Soviet K-37 ‘Crystal’ cipher machine.
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Update
In The Japanese FUJI diplomatic cipher 1941-43 I’ve added the following information under the paragraph ‘Pers Z effort’:More information is available from the TICOM report DF-31B ‘How J.B. 57 Japanese...
View ArticleSoviet cryptographer I.Ya.Verchenko
BIS Journal article on Soviet mathematician and cryptographer Verchenko.
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The Tanks of Operation Barbarossa
Boris Kavalerchik, tank expert and author of the Journal of Slavic Military Studies article ‘Once Again About the T-34’ has published a book on ‘The Tanks of Operation Barbarossa’.Summary:When the...
View ArticleProceedings of the 1st International Conference on Historical Cryptology...
Interesting presentations
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The Higgs memorandum - Compromise of State Department communications by the...
During WWII the US State Department used several cryptosystems in order to protect its radio communications from the Axis powers. For low level messages the unenciphered Gray and Brown codebooks were...
View ArticleUpdate
In Allen Dulles and the compromise of OSS codes in WWII I’ve added the information from the Higgs memorandum.
View Article‘Experiences 1920-1939’
Site governmentattic.com has uploaded the NSA report ‘Experiences 1920-1939’ by Brigadier John H. Tiltman.
View ArticleTICOM DF-174A
I’ve uploaded TICOM report DF-174A ‘Four papers by Fritz Menzer’.The report has information on the Enigma cipher machine, the SG 39 cipher machine and the Enigma modification Lückenfüllerwalze.
View ArticleInteresting report on Luftwaffe operations 1941-43
‘How were German air force resources distributed between different fronts in the years 1941 to 1943 and what are the implications of this case study for understanding the political economy of the...
View ArticleCryptology files on Elizebeth Friedman and Coast Guard Unit 387
Interesting reports on Elizebeth Friedman and Coast Guard Unit 387.Uploaded to archive.org by mr Jason Fagone.
View ArticleUpdate
I’ve added information in Compromise of State Department communications in WWII.
View ArticleRemaining research projects
What files am I still trying to locate? Let’s see.1). TICOM report I-40I requested this file from the NSA FOIA office in 2015. It was quickly located and placed in the review queue. However it has not...
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German solution of State Department A-1 Code in 1944
During WWII the US State Department used several codebooks for enciphering radio telegrams. These were the low level Gray and Brown codes and the high level A1, B1 and C1 codes.The latter codebooks...
View ArticleU.S. Strategic Bombing Survey - Operational Intelligence, Serial No. 431
Here is a link to U.S. Strategic Bombing Survey - Operational Intelligence, Serial No. 431 - Lieutenant Commander Satake (Communications department of the Naval General Staff) – dated November 1945.
View ArticleGreek civil war decrypts
In the site primarysources.brillonline.com there are several decrypted Greek Communist military radio messages dated 1948.These messages were deciphered by the US Army Security Agency.Unfortunately no...
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