Cryptologic Aspects of German Intelligence Activities in South America during World War II
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PART II–THE CRYPTOLOGY OF THE GERMAN
INTELLIGENCE SERVICES
Table of Contents
Foreword .................................................. 65
The Cryptology of the German Intelligence Services ............ 67
Introduction .............................................. 67
Code System ...............................................67
Monoalphabetic Substitution. . . .............................68
Polyalphabetic Substitution ..................................69
Digraphic Substitution. .......................................70
Single Transposition: Columnar...............................70
Single Transposition: Combs and Grilles .......................71
Aperiodic Polyalphabetic Substitution .........................74
Single Transposition/Substitution Systems .................... 74
Double Transposition....................................... . .77
Double Transposition/Substitution ........................... 78
Cryptologic Aspects of German Intelligence Activities in South America during World War II
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The Kryha Machine ..........................................81
The Menzer Device .......................................... 82
The Coast Guard Solution of Enigma:
The Commercial Machine................................. 84
The Coast Guard Solution of Enigma:
The Green Machine ...................................... 85
The Coast Guard Solution of Enigma:
The Red Machine ........................................ 86
The Coast Guard Solution of Enigma:
The Berlin-Madrid Machine............................... 87
The Coast Guard Solution of Enigma:
The Hamburg-Bordeau Stecker ........................... 87
The British Effort ........................................... 88
Glossary ................................................... 93

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