January 2011
Beginner to intermediate
104 pages
5h 19m
English
book
Cryptologic Aspects of German Intelligence Activities in South America during World War II
by David P. Mowry
Content preview from Cryptologic Aspects of German Intelligence Activities in South America during World War II
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Page 69
Cryptologic Aspects of German Intelligence Activities in South America during World War II
Page 69
first and third letters of this group were the equiva-
lents of one and two, respectively, in the key being
used.
A third system, referred to by the British as the
Wigo cipher, was a dinomic substitution without
variants sent in five-figure groups. The Z1 group
of the message gave a character count and the Z0
identified the substitution set. The users of this sys-
tem were never identified.
The only other monoalphabetic substitution
system noted, first intercepted on the Hamburg-
Cape Spartel circuit in January 1945, was used to
report ...
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