Thursday, April 20, 2017

OKW/Chi decodes of Turkish diplomatic traffic

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In Wartime exploitation of Turkish codes by Axis and Allied powers i’ve added the following decoded Turkish diplomatic messages: ...
Sunday, April 16, 2017

Update

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In The American M-209 cipher machine i’ve added notes and I’ve also added some text (analysis of German trigram technique and a list of re...
Friday, April 14, 2017

Article on Vietnamese signals intelligence successes against French and US forces

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The very interesting article ‘ Cryptography During the French and American Wars in Vietnam ’ by Phan Duong Hieu and Neal Koblitz is availa...
Sunday, April 9, 2017

A misogynistic mistake!

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In The Finnish cryptologic service in WWII I’ve added ‘ Head of the diplomatic department was Mary Grashorn ’. Mary Grashorn was menti...
1 comment:
Tuesday, April 4, 2017

The quest for the missing NAASt 5 reports

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During WWII the German Army’s signal intelligence agency operated a number of fixed intercept stations and also had mobile units assigned t...
Friday, March 24, 2017

The Abwehr’s Enigma G cipher machine and Procedure 63

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The Cryptologia article Mr. Twinn’s bombes is available from the Taylor and Francis website and it has some very interesting information o...
3 comments:
Friday, March 17, 2017

TICOM D-69 ‘Correspondence between OKW/CHI and intercept stations’

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I’ve uploaded TICOM report D-69 ‘Correspondence between OKW/CHI and intercept stations’ (97 pages- dated February 1946). Enjoy!
Sunday, March 12, 2017

Update

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In the essay The Japanese TOKI diplomatic cipher 1943-45 I’ve added: The report SRH-361 ‘History of the Signal Security Agency Volume ...