Saturday, May 27, 2017

The compromise of Greek partisan radio communications in WWII

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A history lesson At the start of WWII the Kingdom of Greece , ruled by Ioannis Metaxas  (head of the 4th of August Regime ) followed a...
Thursday, May 25, 2017

Interesting information in TICOM report I-170

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The NSA has declassified the TICOM report I-170 ‘Report on French and Greek Systems by Oberwachtmeister Dr. Otto Karl Winkler of OKH/FNAST ...
Thursday, May 18, 2017

The progress of my old NSA freedom of information act cases or alternatively ήμουν νιος και γέρασα…

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So far my remaining cases with the NSA FOIA office can be broken into two groups. One concerns requests I made in 2015 and these seem to be...
Saturday, May 6, 2017

Update

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I’ve added information from TICOM report I-26 ‘ Interrogation of Oblt. Schubert (OKH/Chef HNW/Gen.d.NA) on Russian Military and Agents’ sys...
Monday, May 1, 2017

Cipher machines of WWII

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In the period 1939-45 most countries enciphered their communications using hand methods (codebooks, transposition etc). Only a few countrie...
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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...