During WWII Weber
worked at OKW/Chi (Oberkommando der Wehrmacht/Chiffrier Abteilung –
Codebreaking department of the Supreme Command of the Armed Forces) and he
solved important Japanese diplomatic cipher systems.
The first
major system solved was the transposed code J-19
FUJI, used in the period 1941-43. Although some TICOM reports state that he
was unable to solve the successor to FUJI this is not correct.
The next main
system was also a transposed code (Japanese designation TOKI) and it was solved
in the period 1943-45 by OKW/Chi and by the Pers Z agency (decryption
department of the German Foreign Ministry).
Why did some
Germans say in postwar interrogations that they could not solve it? I don’t
know.
Why did the
Allied interrogators believe them? I don’t know.
Just clearing
things up…
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