Seizing the Enigma (59 page)

Asdic (sound-ranging system),
4

Aslett, A. R.,
158

Athenia
(passenger ship),
10

Atlantic Charter,
223

Aubretia
(corvette),
15
,
192
,
195
–
196

Augsburg
(ship),
18
–
19

AVA Radio Manufacturing Company,
80
–
81

Axon, Alice,
267

Babbage, Dennis,
134

Bacon, Allon,
202
,
210
–
211

Bainbridge
(ship),
224

Baker-Cresswell, A. J. (Joe),
1
,
7
–
9
,
14
–
16
,
189
–
192

Balme, David E.,
192
–
193
,
195
–
196

“Banburismus,” 166–
168

Barham
(battleship),
10

Bartelmez, Erminnie,
281

Battle of El Alamein,
259

Battle of Jutland,
101

Battle of the Dogger Bank,
31
–
32

Battle of Trafalgar,
217
–
218

Bayes, Thomas,
167

B-Dienst,
49
–
50
,
240
–
241

Becker, Johannes,
126

Bedouin
(ship),
207
–
208

Bedrov, Mikhail A.,
24

Beesly, Patrick,
265

Beleben
(ship),
235

Belgian Sailor
(ship),
287

Benckendorff, Count Constantine,
24

Bender, Walther,
17
,
21
,
23

Bengore
(ship),
15

Bertrand, Gustave,
64
–
72
,
87
–
88
,
92
–
94
,
106

Bigram table,
334

Birch, Frank,
29
–
30
,
118

Birmingham
(cruiser),
136

Bismarck
(battleship),
234
–
235

BLACKBIRD,
301

Bletchley Park,
5
,
103

Blohm & Voss company,
255

Blunt, Anthony,
140

Bogue
(carrier),
313

Bombe technique,
110
–
116
,
270
–
275

Braquenié, Henri,
90

Braun, Kurt,
200
,
208

Braune, Martin,
34

Bress, Egon,
51
–
52

Brett-Smith, Hilary,
163

Bridgeman, C. E.,
297
–
298

British Chemist
(ship),
223
,
225

British Tabulating Machine Company,
115
–
116
,
270

Broadway
(ship),
16
,
190
–
192

Brown, Tommy,
263
–
264

Bruford, W.H.,
138

Bulldog
(destroyer),
1
,
7
–
8
,
189
–
198

Burgess, Guy,
140

Burrough, H. M.,
203
,
205
–
206

Canaris, Wilhelm,
51

Cape Farewell,
224

Cape of Good Hope,
255
,
259

Card
(carrier),
315
–
321

Casablanca conference,
288

Caslon, Clifford,
152
,
154
–
156
,
159
–
160

CCM.
See
Combined Cipher Machine

Chamberlain, Neville,
107

Château des Fouzes,
134

Chiffrierabteilung
,
240

ChiStelle,
67

Christiensen, Rolf,
275

Churchill, Winston,
44
–
45
,
173
,
214
–
220
,
328
–
329

Ciȩzski, Maksymilian,
60
,
63
–
64
,
71
,
75
–
77
,
90
.
See also
Rejewski, Marian

“Cillies,” 131–
132

Ciphers.
See also
Key(s)

Dockyard Cipher,
48
,
138
–
139
,
168
–
169

FRANKFURT,
246

Home Waters,
250

Naval (British),
246

PURPLE,
275
–
276

Radio Cipher H,
48
,
138

Short Signal,
337

Short Weather Cipher,
48
,
177
–
179
,
264
,
337

TRITON,
216

weather,
220
–
222

Citadel,
171
–
172

City of Bath
(ship),
223

Civil war, in Spain,
100

Clarke, Joan,
162

Clarke, William F. (Nobby),
97

Clayton, John W. (Jock),
102
,
141
–
142
,
145
–
147

Code A,
48

Codebook, from
Magdeburg
,
23
–
28

Codebreaking

emphasis on linguistic,
77
–
78

in France,
64
–
72

German,
245
–
248

participants in,
57

in Poland,
57
–
64

by United States,
275
–
285

Cod oil,
152

Combined Cipher Machine,
280

Commercial codes,
40

Connel, G. Gordon,
262

Convoy contact reports,
230

Convoy HX 155,
222
–
225

Convoy HX 229,
288

Convoy HX 234,
292
,
294

Convoy OB 318,
1
,
2
–
3
,
7
–
16

Convoy SC 122,
288

Convoy SC 127,
288
–
301

Cormier, Richard L.,
316
–
317

Coulberg
(ship),
225

“Crab,” 131

“Crash,” 131

Crawley Grange,
270

Currier, Prescott,
276

Curzon, Earl,
96

Cyclometer,
84
–
85

DAN station,
268

Dejean, Maurice,
65

Denning, Norman,
101
–
102

Denniston, Alastair,
25
–
26
,
27
,
90
,
107

DIANA,
228

Direction-finding,
250
–
252

Dockyard Cipher,
48
,
138
–
139
,
168
–
169

Dogger Bank, Battle of the,
31
–
32

DOLPHIN,
305

Dönitz, Karl,
8
,
9
–
10
,
13
–
14
,
55
,
122
,
227
,
237
–
240
,
303
–
306

D’Oyly-Hughes, Guy,
142
–
145

Dresky, Hans von,
121
–
125

Dryden, J. C.T.,
109

Dulverton
(ship),
261
,
264

Dundas
(ship),
291

Dunderdale, Wilfred,
70

Dunlice Castle
(ship),
212

Durrell, Henry,
206

Eachus, Joseph,
278

Eastern Star
(ship),
9

ECM.
See
Electric Cipher Machine

Edwards, Ralph,
182
–
183

Egerland
(supply ship),
235

El Alamein, Battle of,
259

Electric Cipher Machine,
280

Emden
(cruiser),
121

Empire Franklin
(ship),
287
,
291

Engstrom, Howard,
279

Enigma

adoption of,
45
–
48

B-Dienst and,
49
–
50

belief in,
12

Ciȩzski and,
63
–
64

convoy contact reports,
230

current in,
339

cyclometer and,
84
–
85

faith in,
307
,
326
–
327

fears over,
234
–
236

G.C.&C.S. and,
5

high traffic volume dangers,
243
–
244

inner settings,
331

invention of,
35
–
36

Italian use of,
100

key determination,
331
–
332

key in,
37
–
38
,
54

Korn and,
42
–
43

message types,
230

M4 model,
244
–
245

MS device and,
242
–
243

operation of,
5

outer settings,
331

patent,
338

procedure for,
227
–
231
,
331
–
340

proliferation of,
48

radio cipher conversation,
230

reciprocal substitutions in,
115

reflector in,
42
–
43

rejection of,
38

Rejewski and,
72
–
77

rod method and,
100
–
101

safeguards,
241

security of,
233
–
234

short transmissions,
230

Stummel and,
307

successes against,
5
–
6

superimposition and,
46

ULTRA and,
321
–
329

weak points in,
131
–
132

worksheet,
332
–
333

Zygalski sheets and,
85
–
86
,
90

Enigma keys

capturing of
Polares
and,
137

determination of,
331
–
332

in Enigma machine,
37
–
38
,
54

NEPTUN,
244

permutations and,
79

RED,
133
-134,
135
–
136

Rejewski and,
80
–
81

SHARK,
265
–
266

TRITON,
239

from Warmington,
161

Enigma rotors

addition of,
89
–
90

“banburismus” method and,
166
–
168

in bombe technique,
112
–
116

in Enigma machine,
36
–
38
,
49
–
50

Polish work with,
81
–
82

setting choices,
241

thin,
244

from U-33,
128
–
129

Entscheidungsproblem
,
108

Erebus
(ship),
149

Escort Group 3,
7

Escort Group 7,
3
–
4

Esmond
(ship),
6

Esso Hamburg
(ship),
235

Ettinghausen, A. A. Ernest E.,
274

Europa
(ship),
304

Ewing, Sir Alfred,
25
,
27

FALCON,
305

Fasson, Antony,
258
–
259
,
262

Festung
(ship),
304

Fetterlein, E. C,
99

Figl, Andreas,
43

Fisher, Sir John,
43
–
44

Fleming, Ian,
145
–
147

Flowerdown installation,
267

FLUSS substitution book,
238

Food rationing,
288

Forster, Leonard,
119
–
120
,
273
–
274
,
329
–
330

Fort Howe
(ship),
287

France, cryptology in,
64
–
72

Franco, Francisco,
100

FRANKFURT cipher,
246

French Colonial Office,
229

Fricke, Kurt,
235
–
236

Galibin, Lieutenant,
23

Gayhurst Manor,
270

G.C.&C.S.
See
Government Code and Cypher School (G.C.&C.S.)

Gedania
(tanker),
235

Gewald, Hinrich,
200
–
202
,
209

Gleaner
(minesweeper),
124
–
128

Glorious
(aircraft carrier),
142
–
145

Gneisenau
(ship),
142
–
145
,
248

Gödel, Kurt,
107

Godfrey, John H.,
146
,
164