Security News > 2015 > May > German Cryptanalysis of the M-209 (Schneier on Security)
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2015-05-12 21:13
This 1947 document describes a German machine to cryptanalyze the American M-209 mechanical encryption machine. I can't figure out anything about how it works....
News URL
https://www.schneier.com/blog/archives/2015/05/german_cryptana.html