Wednesday, May 30, 2018

TICOM report DF-217

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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-...
Friday, May 25, 2018

TICOM DF-196

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The NSA FOIA/MDR office has declassified the TICOM report DF-196 ‘ Report on Russian decryption in the former German Army ’. Google driv...
Sunday, May 13, 2018

Another correction

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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 ci...
Saturday, May 12, 2018

TICOM report D-83 ‘Summary of Work Done on Typex Traffic by OKH/In 7/VI, 1939-1941’

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Uploaded at arcre.com
Saturday, May 5, 2018

Analysis of the Czechoslovak STP cipher

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Essay on the WWII Czechoslovak STP cipher by Štefan Porubský . Research Gate link: Application and Misapplication of the Czechoslovak S...
Monday, April 30, 2018

Article on Chinese codes and ciphers

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Interesting article from the journal Cryptologia: ‘ Chinese cryptography: The Chinese Nationalist Party and intelligence management, 1927–19...
Friday, April 27, 2018

Cipher systems of the German Foreign Ministry

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The TICOM report IF-266 ‘ DEPARTMENT OF STATE REPORTS ON THE GERMAN FOREIGN OFFICE ’ has some information on the codebooks and cipher proced...
Wednesday, April 11, 2018

Another dead end?

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Last month i posted the recently declassified Carlson-Goldsberry report . A memo included in the report had the following handwritten notes:...