Friday, June 12, 2015


1). In State Department’s strip cipher – reuse of alphabet strips and key lists i added the following US report of November 1943:

(15). Dr Wolfgang Franz, who has in charge of OKW/Chi’s strip cipher program said in TICOM DF-176, p9 ‘All told, some 28 circuits were solved at the Bureau under my guidance, likewise six numerical keys-some of them only in part

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