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I am reading this Amazon book about the Brit cryptographic successes against Germany - the topic has always fascinated me.
While reading it, I was constantly wondering about the German effort; were they every bit as successful at reading our (Allied) signals, as a cat and mouse game -or did they fail at it?
The book mentions "B-Dienst"
Aha: https://en.wikipedia.org/wiki/B-Dienst
They were pretty good at it against the Admiralty before WWII but struggled later, and I found no reports suggesting a solid decryption of US codes on a regular basis.
Have read some about the Brit's TypeX machine and the US SIGABA
While reading it, I was constantly wondering about the German effort; were they every bit as successful at reading our (Allied) signals, as a cat and mouse game -or did they fail at it?
The book mentions "B-Dienst"
Aha: https://en.wikipedia.org/wiki/B-Dienst
They were pretty good at it against the Admiralty before WWII but struggled later, and I found no reports suggesting a solid decryption of US codes on a regular basis.
Have read some about the Brit's TypeX machine and the US SIGABA
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