Preparing the workshop…
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Decrypt a message
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Chapters
The British bombe
Germany: Enigma operations
01
Encrypt a message
02
Decrypt a message
03
Inside the rotors
Poland: the rotor wiring
04
Scrambles
05
The doubled message key
06
Renamed letters
07
Reading the message keys
08
Rejewski’s equations
09
The entry-wheel guess
10
Reading the wiring
Poland: cyclometer and bomba
11
The cyclometer
12
The card catalogue
13
The Polish bomba
Building the bombe
14
A bombe drum
15
The wire brushes
16
Three drums, one Enigma
17
The drive
Working out a menu
18
Place the crib
19
Draw the menu
20
Straighten a loop
21
The logical test
Running the bombe
22
Plug up the menu
23
Test every guess at once
24
The diagonal board
25
Run the bombe
26
Check the stop
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A history of Enigma