VeraCrypt
aboutsummaryrefslogtreecommitdiff
path: root/src/Common/Volumes.c
blob: 93b0eacbb0bc8323d3039a4b18bec3ebcc036649 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
/*
 Legal Notice: Some portions of the source code contained in this file were
 derived from the source code of TrueCrypt 7.1a, which is 
 Copyright (c) 2003-2012 TrueCrypt Developers Association and which is 
 governed by the TrueCrypt License 3.0, also from the source code of
 Encryption for the Masses 2.02a, which is Copyright (c) 1998-2000 Paul Le Roux
 and which is governed by the 'License Agreement for Encryption for the Masses' 
 Modifications and additions to the original source code (contained in this file) 
 and all other portions of this file are Copyright (c) 2013-2015 IDRIX
 and are governed by the Apache License 2.0 the full text of which is
 contained in the file License.txt included in VeraCrypt binary and source
 code distribution packages. */

#include "Tcdefs.h"

#ifndef TC_WINDOWS_BOOT
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
#include "EncryptionThreadPool.h"
#endif

#include <stddef.h>
#include <string.h>
#include <io.h>

#ifndef DEVICE_DRIVER
#include "Random.h"
#endif

#include "Crc.h"
#include "Crypto.h"
#include "Endian.h"
#include "Volumes.h"
#include "Pkcs5.h"

#ifdef _WIN32
#include <Strsafe.h>
#include "../Boot/Windows/BootCommon.h"
#endif

/* Volume header v5 structure (used since TrueCrypt 7.0): */
//
// Offset	Length	Description
// ------------------------------------------
// Unencrypted:
// 0		64		Salt
// Encrypted:
// 64		4		ASCII string 'VERA'
// 68		2		Header version
// 70		2		Required program version
// 72		4		CRC-32 checksum of the (decrypted) bytes 256-511
// 76		16		Reserved (must contain zeroes)
// 92		8		Size of hidden volume in bytes (0 = normal volume)
// 100		8		Size of the volume in bytes (identical with field 92 for hidden volumes, valid if field 70 >= 0x600 or flag bit 0 == 1)
// 108		8		Byte offset of the start of the master key scope (valid if field 70 >= 0x600 or flag bit 0 == 1)
// 116		8		Size of the encrypted area within the master key scope (valid if field 70 >= 0x600 or flag bit 0 == 1)
// 124		4		Flags: bit 0 set = system encryption; bit 1 set = non-system in-place encryption, bits 2-31 are reserved (set to zero)
// 128		4		Sector size in bytes
// 132		120		Reserved (must contain zeroes)
// 252		4		CRC-32 checksum of the (decrypted) bytes 64-251
// 256		256		Concatenated primary master key(s) and secondary master key(s) (XTS mode)


/* Deprecated/legacy volume header v4 structure (used by TrueCrypt 6.x): */
//
// Offset	Length	Description
// ------------------------------------------
// Unencrypted:
// 0		64		Salt
// Encrypted:
// 64		4		ASCII string 'VERA'
// 68		2		Header version
// 70		2		Required program version
// 72		4		CRC-32 checksum of the (decrypted) bytes 256-511
// 76		16		Reserved (must contain zeroes)
// 92		8		Size of hidden volume in bytes (0 = normal volume)
// 100		8		Size of the volume in bytes (identical with field 92 for hidden volumes, valid if field 70 >= 0x600 or flag bit 0 == 1)
// 108		8		Byte offset of the start of the master key scope (valid if field 70 >= 0x600 or flag bit 0 == 1)
// 116		8		Size of the encrypted area within the master key scope (valid if field 70 >= 0x600 or flag bit 0 == 1)
// 124		4		Flags: bit 0 set = system encryption; bit 1 set = non-system in-place encryption, bits 2-31 are reserved
// 128		124		Reserved (must contain zeroes)
// 252		4		CRC-32 checksum of the (decrypted) bytes 64-251
// 256		256		Concatenated primary master key(s) and secondary master key(s) (XTS mode)


/* Deprecated/legacy volume header v3 structure (used by TrueCrypt 5.x): */
//
// Offset	Length	Description
// ------------------------------------------
// Unencrypted:
// 0		64		Salt
// Encrypted:
// 64		4		ASCII string 'VERA'
// 68		2		Header version
// 70		2		Required program version
// 72		4		CRC-32 checksum of the (decrypted) bytes 256-511
// 76		8		Volume creation time
// 84		8		Header creation time
// 92		8		Size of hidden volume in bytes (0 = normal volume)
// 100		8		Size of the volume in bytes (identical with field 92 for hidden volumes)
// 108		8		Start byte offset of the encrypted area of the volume
// 116		8		Size of the encrypted area of the volume in bytes
// 124		132		Reserved (must contain zeroes)
// 256		256		Concatenated primary master key(s) and secondary master key(s) (XTS mode)


/* Deprecated/legacy volume header v2 structure (used before TrueCrypt 5.0): */
//
// Offset	Length	Description
// ------------------------------------------
// Unencrypted:
// 0		64		Salt
// Encrypted:
// 64		4		ASCII string 'VERA'
// 68		2		Header version
// 70		2		Required program version
// 72		4		CRC-32 checksum of the (decrypted) bytes 256-511
// 76		8		Volume creation time
// 84		8		Header creation time
// 92		8		Size of hidden volume in bytes (0 = normal volume)
// 100		156		Reserved (must contain zeroes)
// 256		32		For LRW (deprecated/legacy), secondary key
//					For CBC (deprecated/legacy), data used to generate IV and whitening values
// 288		224		Master key(s)



uint16 GetHeaderField16 (byte *header, int offset)
{
	return BE16 (*(uint16 *) (header + offset));
}


uint32 GetHeaderField32 (byte *header, int offset)
{
	return BE32 (*(uint32 *) (header + offset));
}


UINT64_STRUCT GetHeaderField64 (byte *header, int offset)
{
	UINT64_STRUCT uint64Struct;

#ifndef TC_NO_COMPILER_INT64
	uint64Struct.Value = BE64 (*(uint64 *) (header + offset));
#else
	uint64Struct.HighPart = BE32 (*(uint32 *) (header + offset));
	uint64Struct.LowPart = BE32 (*(uint32 *) (header + offset + 4));
#endif
	return uint64Struct;
}


#ifndef TC_WINDOWS_BOOT

typedef struct
{
	char DerivedKey[MASTER_KEYDATA_SIZE];
	BOOL Free;
	LONG KeyReady;
	int Pkcs5Prf;
} KeyDerivationWorkItem;


BOOL ReadVolumeHeaderRecoveryMode = FALSE;

int ReadVolumeHeader (BOOL bBoot, char *encryptedHeader, Password *password, int selected_pkcs5_prf, int pim, BOOL truecryptMode, PCRYPTO_INFO *retInfo, CRYPTO_INFO *retHeaderCryptoInfo)
{
	char header[TC_VOLUME_HEADER_EFFECTIVE_SIZE];
	CRYPTOPP_ALIGN_DATA(16) KEY_INFO keyInfo;
	PCRYPTO_INFO cryptoInfo;
	char dk[MASTER_KEYDATA_SIZE];
	int enqPkcs5Prf, pkcs5_prf;
	uint16 headerVersion;
	int status = ERR_PARAMETER_INCORRECT;
	int primaryKeyOffset;

	TC_EVENT keyDerivationCompletedEvent;
	TC_EVENT noOutstandingWorkItemEvent;
	KeyDerivationWorkItem *keyDerivationWorkItems;
	KeyDerivationWorkItem *item;
	int pkcs5PrfCount = LAST_PRF_ID - FIRST_PRF_ID + 1;
	size_t encryptionThreadCount = GetEncryptionThreadCount();
	size_t queuedWorkItems = 0;
	LONG outstandingWorkItemCount = 0;
	int i;

	// if no PIM specified, use default value
	if (pim < 0)
		pim = 0;

	if (truecryptMode)
	{
		// SHA-256 not supported in TrueCrypt mode
		if (selected_pkcs5_prf == SHA256)
			return ERR_PARAMETER_INCORRECT;
		pkcs5PrfCount--; // don't count SHA-256 in case of TrueCrypt mode
	}

	if (retHeaderCryptoInfo != NULL)
	{
		cryptoInfo = retHeaderCryptoInfo;
	}
	else
	{
      if (!retInfo)
         return ERR_PARAMETER_INCORRECT;

		cryptoInfo = *retInfo = crypto_open ();
		if (cryptoInfo == NULL)
			return ERR_OUTOFMEMORY;
	}

	/* use thread pool only if no PRF was specified */
	if ((selected_pkcs5_prf == 0) && (encryptionThreadCount > 1))
	{
		keyDerivationWorkItems = TCalloc (sizeof (KeyDerivationWorkItem) * pkcs5PrfCount);
		if (!keyDerivationWorkItems)
			return ERR_OUTOFMEMORY;

		for (i = 0; i < pkcs5PrfCount; ++i)
			keyDerivationWorkItems[i].Free = TRUE;

#ifdef DEVICE_DRIVER
		KeInitializeEvent (&keyDerivationCompletedEvent, SynchronizationEvent, FALSE);
		KeInitializeEvent (&noOutstandingWorkItemEvent, SynchronizationEvent, TRUE);
#else
		keyDerivationCompletedEvent = CreateEvent (NULL, FALSE, FALSE, NULL);
		if (!keyDerivationCompletedEvent)
		{
			TCfree (keyDerivationWorkItems);
			return ERR_OUTOFMEMORY;
		}

		noOutstandingWorkItemEvent = CreateEvent (NULL, FALSE, TRUE, NULL);
		if (!noOutstandingWorkItemEvent)
		{
			CloseHandle (keyDerivationCompletedEvent);
			TCfree (keyDerivationWorkItems);
			return ERR_OUTOFMEMORY;
		}
#endif
	}
		
#ifndef DEVICE_DRIVER
	VirtualLock (&keyInfo, sizeof (keyInfo));
	VirtualLock (&dk, sizeof (dk));
#endif

	crypto_loadkey (&keyInfo, password->Text, (int) password->Length);

	// PKCS5 is used to derive the primary header key(s) and secondary header key(s) (XTS mode) from the password
	memcpy (keyInfo.salt, encryptedHeader + HEADER_SALT_OFFSET, PKCS5_SALT_SIZE);

	// Test all available PKCS5 PRFs
	for (enqPkcs5Prf = FIRST_PRF_ID; enqPkcs5Prf <= LAST_PRF_ID || queuedWorkItems > 0; ++enqPkcs5Prf)
	{	
		// if a PRF is specified, we skip all other PRFs
		if (selected_pkcs5_prf != 0 && enqPkcs5Prf != selected_pkcs5_prf)
			continue;

		// skip SHA-256 in case of TrueCrypt mode
		if (truecryptMode && (enqPkcs5Prf == SHA256))
			continue;

		if ((selected_pkcs5_prf == 0) && (encryptionThreadCount > 1))
		{
			// Enqueue key derivation on thread pool
			if (queuedWorkItems < encryptionThreadCount && enqPkcs5Prf <= LAST_PRF_ID)
			{
				for (i = 0; i < pkcs5PrfCount; ++i)
				{
					item = &keyDerivationWorkItems[i];
					if (item->Free)
					{
						item->Free = FALSE;
						item->KeyReady = FALSE;
						item->Pkcs5Prf = enqPkcs5Prf;

						EncryptionThreadPoolBeginKeyDerivation (&keyDerivationCompletedEvent, &noOutstandingWorkItemEvent,
							&item->KeyReady, &outstandingWorkItemCount, enqPkcs5Prf, keyInfo.userKey,
							keyInfo.keyLength, keyInfo.salt, get_pkcs5_iteration_count (enqPkcs5Prf, pim, truecryptMode, bBoot), item->DerivedKey);
						
						++queuedWorkItems;
						break;
					}
				}

				if (enqPkcs5Prf < LAST_PRF_ID)
					continue;
			}
			else
				--enqPkcs5Prf;

			// Wait for completion of a key derivation
			while (queuedWorkItems > 0)
			{
				for (i = 0; i < pkcs5PrfCount; ++i)
				{
					item = &keyDerivationWorkItems[i];
					if (!item->Free && InterlockedExchangeAdd (&item->KeyReady, 0) == TRUE)
					{
						pkcs5_prf = item->Pkcs5Prf;
						keyInfo.noIterations = get_pkcs5_iteration_count (pkcs5_prf, pim, truecryptMode, bBoot);
						memcpy (dk, item->DerivedKey, sizeof (dk));

						item->Free = TRUE;
						--queuedWorkItems;
						goto KeyReady;
					}
				}

				if (queuedWorkItems > 0)
					TC_WAIT_EVENT (keyDerivationCompletedEvent);
			}
			continue;
KeyReady:	;
		}
		else
		{
			pkcs5_prf = enqPkcs5Prf;
			keyInfo.noIterations = get_pkcs5_iteration_count (enqPkcs5Prf, pim, truecryptMode, bBoot);

			switch (pkcs5_prf)
			{
			case RIPEMD160:
				derive_key_ripemd160 (keyInfo.userKey, keyInfo.keyLength, keyInfo.salt,
					PKCS5_SALT_SIZE, keyInfo.noIterations, dk, GetMaxPkcs5OutSize());
				break;

			case SHA512:
				derive_key_sha512 (keyInfo.userKey, keyInfo.keyLength, keyInfo.salt,
					PKCS5_SALT_SIZE, keyInfo.noIterations, dk, GetMaxPkcs5OutSize());
				break;

			case WHIRLPOOL:
				derive_key_whirlpool (keyInfo.userKey, keyInfo.keyLength, keyInfo.salt,
					PKCS5_SALT_SIZE, keyInfo.noIterations, dk, GetMaxPkcs5OutSize());
				break;

			case SHA256:
				derive_key_sha256 (keyInfo.userKey, keyInfo.keyLength, keyInfo.salt,
					PKCS5_SALT_SIZE, keyInfo.noIterations, dk, GetMaxPkcs5OutSize());
				break;

			default:		
				// Unknown/wrong ID
				TC_THROW_FATAL_EXCEPTION;
			} 
		}

		// Test all available modes of operation
		for (cryptoInfo->mode = FIRST_MODE_OF_OPERATION_ID;
			cryptoInfo->mode <= LAST_MODE_OF_OPERATION;
			cryptoInfo->mode++)
		{
			switch (cryptoInfo->mode)
			{

			default:
				primaryKeyOffset = 0;
			}

			// Test all available encryption algorithms
			for (cryptoInfo->ea = EAGetFirst ();
				cryptoInfo->ea != 0;
				cryptoInfo->ea = EAGetNext (cryptoInfo->ea))
			{
				int blockSize;

				if (!EAIsModeSupported (cryptoInfo->ea, cryptoInfo->mode))
					continue;	// This encryption algorithm has never been available with this mode of operation

				blockSize = CipherGetBlockSize (EAGetFirstCipher (cryptoInfo->ea));

				status = EAInit (cryptoInfo->ea, dk + primaryKeyOffset, cryptoInfo->ks);
				if (status == ERR_CIPHER_INIT_FAILURE)
					goto err;

				// Init objects related to the mode of operation

				if (cryptoInfo->mode == XTS)
				{
					// Copy the secondary key (if cascade, multiple concatenated)
					memcpy (cryptoInfo->k2, dk + EAGetKeySize (cryptoInfo->ea), EAGetKeySize (cryptoInfo->ea));

					// Secondary key schedule
					if (!EAInitMode (cryptoInfo))
					{
						status = ERR_MODE_INIT_FAILED;
						goto err;
					}
				}
				else
				{
					continue;
				}

				// Copy the header for decryption
				memcpy (header, encryptedHeader, sizeof (header));

				// Try to decrypt header 

				DecryptBuffer (header + HEADER_ENCRYPTED_DATA_OFFSET, HEADER_ENCRYPTED_DATA_SIZE, cryptoInfo);

				// Magic 'VERA' or 'TRUE' depending if we are in TrueCrypt mode or not
				if ((truecryptMode && GetHeaderField32 (header, TC_HEADER_OFFSET_MAGIC) != 0x54525545)
					|| (!truecryptMode && GetHeaderField32 (header, TC_HEADER_OFFSET_MAGIC) != 0x56455241)
					)
					continue;

				// Header version
				headerVersion = GetHeaderField16 (header, TC_HEADER_OFFSET_VERSION);
				
				if (headerVersion > VOLUME_HEADER_VERSION)
				{
					status = ERR_NEW_VERSION_REQUIRED;
					goto err;
				}

				// Check CRC of the header fields
				if (!ReadVolumeHeaderRecoveryMode
					&& headerVersion >= 4
					&& GetHeaderField32 (header, TC_HEADER_OFFSET_HEADER_CRC) != GetCrc32 (header + TC_HEADER_OFFSET_MAGIC, TC_HEADER_OFFSET_HEADER_CRC - TC_HEADER_OFFSET_MAGIC))
					continue;

				// Required program version
				cryptoInfo->RequiredProgramVersion = GetHeaderField16 (header, TC_HEADER_OFFSET_REQUIRED_VERSION);
				if (truecryptMode)
				{
					if (cryptoInfo->RequiredProgramVersion < 0x600 || cryptoInfo->RequiredProgramVersion > 0x71a)
					{
						status = ERR_UNSUPPORTED_TRUECRYPT_FORMAT | (((int)cryptoInfo->RequiredProgramVersion) << 16);
						goto err;
					}
					cryptoInfo->LegacyVolume = FALSE;
				}
				else
					cryptoInfo->LegacyVolume = cryptoInfo->RequiredProgramVersion < 0x10b;

				// Check CRC of the key set
				if (!ReadVolumeHeaderRecoveryMode
					&& GetHeaderField32 (header, TC_HEADER_OFFSET_KEY_AREA_CRC) != GetCrc32 (header + HEADER_MASTER_KEYDATA_OFFSET, MASTER_KEYDATA_SIZE))
					continue;

				// Now we have the correct password, cipher, hash algorithm, and volume type

				// Check the version required to handle this volume
				if (!truecryptMode && (cryptoInfo->RequiredProgramVersion > VERSION_NUM))
				{
					status = ERR_NEW_VERSION_REQUIRED;
					goto err;
				}

				// Header version
				cryptoInfo->HeaderVersion = headerVersion;

				// Volume creation time (legacy)
				cryptoInfo->volume_creation_time = GetHeaderField64 (header, TC_HEADER_OFFSET_VOLUME_CREATION_TIME).Value;

				// Header creation time (legacy)
				cryptoInfo->header_creation_time = GetHeaderField64 (header, TC_HEADER_OFFSET_MODIFICATION_TIME).Value;

				// Hidden volume size (if any)
				cryptoInfo->hiddenVolumeSize = GetHeaderField64 (header, TC_HEADER_OFFSET_HIDDEN_VOLUME_SIZE).Value;

				// Hidden volume status
				cryptoInfo->hiddenVolume = (cryptoInfo->hiddenVolumeSize != 0);

				// Volume size
				cryptoInfo->VolumeSize = GetHeaderField64 (header, TC_HEADER_OFFSET_VOLUME_SIZE);
				
				// Encrypted area size and length
				cryptoInfo->EncryptedAreaStart = GetHeaderField64 (header, TC_HEADER_OFFSET_ENCRYPTED_AREA_START);
				cryptoInfo->EncryptedAreaLength = GetHeaderField64 (header, TC_HEADER_OFFSET_ENCRYPTED_AREA_LENGTH);

				// Flags
				cryptoInfo->HeaderFlags = GetHeaderField32 (header, TC_HEADER_OFFSET_FLAGS);

				// Sector size
				if (headerVersion >= 5)
					cryptoInfo->SectorSize = GetHeaderField32 (header, TC_HEADER_OFFSET_SECTOR_SIZE);
				else
					cryptoInfo->SectorSize = TC_SECTOR_SIZE_LEGACY;

				if (cryptoInfo->SectorSize < TC_MIN_VOLUME_SECTOR_SIZE
					|| cryptoInfo->SectorSize > TC_MAX_VOLUME_SECTOR_SIZE
					|| cryptoInfo->SectorSize % ENCRYPTION_DATA_UNIT_SIZE != 0)
				{
					status = ERR_PARAMETER_INCORRECT;
					goto err;
				}

				// Preserve scheduled header keys if requested			
				if (retHeaderCryptoInfo)
				{
					if (retInfo == NULL)
					{
						cryptoInfo->pkcs5 = pkcs5_prf;
						cryptoInfo->noIterations = keyInfo.noIterations;
						cryptoInfo->bTrueCryptMode = truecryptMode;
						cryptoInfo->volumePim = pim;
						goto ret;
					}

					cryptoInfo = *retInfo = crypto_open ();
					if (cryptoInfo == NULL)
					{
						status = ERR_OUTOFMEMORY;
						goto err;
					}

					memcpy (cryptoInfo, retHeaderCryptoInfo, sizeof (*cryptoInfo));
				}

				// Master key data
				memcpy (keyInfo.master_keydata, header + HEADER_MASTER_KEYDATA_OFFSET, MASTER_KEYDATA_SIZE);
				memcpy (cryptoInfo->master_keydata, keyInfo.master_keydata, MASTER_KEYDATA_SIZE);

				// PKCS #5
				memcpy (cryptoInfo->salt, keyInfo.salt, PKCS5_SALT_SIZE);
				cryptoInfo->pkcs5 = pkcs5_prf;
				cryptoInfo->noIterations = keyInfo.noIterations;
				cryptoInfo->bTrueCryptMode = truecryptMode;
				cryptoInfo->volumePim = pim;

				// Init the cipher with the decrypted master key
				status = EAInit (cryptoInfo->ea, keyInfo.master_keydata + primaryKeyOffset, cryptoInfo->ks);
				if (status == ERR_CIPHER_INIT_FAILURE)
					goto err;

				switch (cryptoInfo->mode)
				{

				default:
					// The secondary master key (if cascade, multiple concatenated)
					memcpy (cryptoInfo->k2, keyInfo.master_keydata + EAGetKeySize (cryptoInfo->ea), EAGetKeySize (cryptoInfo->ea));

				}

				if (!EAInitMode (cryptoInfo))
				{
					status = ERR_MODE_INIT_FAILED;
					goto err;
				}

				status = ERR_SUCCESS;
				goto ret;
			}
		}
	}
	status = ERR_PASSWORD_WRONG;

err:
	if (cryptoInfo != retHeaderCryptoInfo)
	{
		crypto_close(cryptoInfo);
		*retInfo = NULL; 
	}

ret:
	burn (&keyInfo, sizeof (keyInfo));
	burn (dk, sizeof(dk));

#ifndef DEVICE_DRIVER
	VirtualUnlock (&keyInfo, sizeof (keyInfo));
	VirtualUnlock (&dk, sizeof (dk));
#endif

	if ((selected_pkcs5_prf == 0) && (encryptionThreadCount > 1))
	{
		TC_WAIT_EVENT (noOutstandingWorkItemEvent);

		burn (keyDerivationWorkItems, sizeof (KeyDerivationWorkItem) * pkcs5PrfCount);
		TCfree (keyDerivationWorkItems);

#ifndef DEVICE_DRIVER
		CloseHandle (keyDerivationCompletedEvent);
		CloseHandle (noOutstandingWorkItemEvent);
#endif
	}

	return status;
}

#ifdef _WIN32
void ComputeBootloaderFingerprint (byte *bootLoaderBuf, unsigned int bootLoaderSize, byte* fingerprint)
{
	// compute Whirlpool+SHA512 fingerprint of bootloader including MBR
	// we skip user configuration fields:
	// TC_BOOT_SECTOR_OUTER_VOLUME_BAK_HEADER_CRC_OFFSET = 402
	//  => TC_BOOT_SECTOR_OUTER_VOLUME_BAK_HEADER_CRC_SIZE = 4
	// TC_BOOT_SECTOR_USER_MESSAGE_OFFSET     = 406
	//  => TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH = 24
	// TC_BOOT_SECTOR_USER_CONFIG_OFFSET      = 438
	//
	// we have: TC_BOOT_SECTOR_USER_MESSAGE_OFFSET = TC_BOOT_SECTOR_OUTER_VOLUME_BAK_HEADER_CRC_OFFSET + TC_BOOT_SECTOR_OUTER_VOLUME_BAK_HEADER_CRC_SIZE

	WHIRLPOOL_CTX whirlpool;
	sha512_ctx sha2;
	
	WHIRLPOOL_init (&whirlpool);
	sha512_begin (&sha2);

	WHIRLPOOL_add (bootLoaderBuf, TC_BOOT_SECTOR_OUTER_VOLUME_BAK_HEADER_CRC_OFFSET * 8, &whirlpool);
	sha512_hash (bootLoaderBuf, TC_BOOT_SECTOR_OUTER_VOLUME_BAK_HEADER_CRC_OFFSET, &sha2);

	WHIRLPOOL_add (bootLoaderBuf + TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH, (TC_BOOT_SECTOR_USER_CONFIG_OFFSET - (TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH)) * 8, &whirlpool);
	sha512_hash (bootLoaderBuf + TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH, (TC_BOOT_SECTOR_USER_CONFIG_OFFSET - (TC_BOOT_SECTOR_USER_MESSAGE_OFFSET + TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH)), &sha2);

	WHIRLPOOL_add (bootLoaderBuf + TC_BOOT_SECTOR_USER_CONFIG_OFFSET + 1, (TC_MAX_MBR_BOOT_CODE_SIZE - (TC_BOOT_SECTOR_USER_CONFIG_OFFSET + 1)) * 8, &whirlpool);
	sha512_hash (bootLoaderBuf + TC_BOOT_SECTOR_USER_CONFIG_OFFSET + 1, (TC_MAX_MBR_BOOT_CODE_SIZE - (TC_BOOT_SECTOR_USER_CONFIG_OFFSET + 1)), &sha2);

	WHIRLPOOL_add (bootLoaderBuf + TC_SECTOR_SIZE_BIOS, (bootLoaderSize - TC_SECTOR_SIZE_BIOS) * 8, &whirlpool);
	sha512_hash (bootLoaderBuf + TC_SECTOR_SIZE_BIOS, (bootLoaderSize - TC_SECTOR_SIZE_BIOS), &sha2);

	WHIRLPOOL_finalize (&whirlpool, fingerprint);
	sha512_end (&fingerprint [WHIRLPOOL_DIGESTSIZE], &sha2);
}
#endif

#else // TC_WINDOWS_BOOT

int ReadVolumeHeader (BOOL bBoot, char *header, Password *password, int pim, PCRYPTO_INFO *retInfo, CRYPTO_INFO *retHeaderCryptoInfo)
{
#ifdef TC_WINDOWS_BOOT_SINGLE_CIPHER_MODE
	char dk[32 * 2];			// 2 * 256-bit key
#else
	char dk[32 * 2 * 3];		// 6 * 256-bit key
#endif

	PCRYPTO_INFO cryptoInfo;
	int status = ERR_SUCCESS;
	uint32 iterations = pim;
	iterations <<= 16;
	iterations |= bBoot;

	if (retHeaderCryptoInfo != NULL)
		cryptoInfo = retHeaderCryptoInfo;
	else
		cryptoInfo = *retInfo = crypto_open ();

	// PKCS5 PRF
#ifdef TC_WINDOWS_BOOT_SHA2
	derive_key_sha256 (password->Text, (int) password->Length, header + HEADER_SALT_OFFSET,
		PKCS5_SALT_SIZE, iterations, dk, sizeof (dk));
#else
	derive_key_ripemd160 (password->Text, (int) password->Length, header + HEADER_SALT_OFFSET,
		PKCS5_SALT_SIZE, iterations, dk, sizeof (dk));
#endif

	// Mode of operation
	cryptoInfo->mode = FIRST_MODE_OF_OPERATION_ID;

#ifdef TC_WINDOWS_BOOT_SINGLE_CIPHER_MODE
	cryptoInfo->ea = 1;
#else
	// Test all available encryption algorithms
	for (cryptoInfo->ea = EAGetFirst (); cryptoInfo->ea != 0; cryptoInfo->ea = EAGetNext (cryptoInfo->ea))
#endif
	{
#ifdef TC_WINDOWS_BOOT_SINGLE_CIPHER_MODE
	#if defined (TC_WINDOWS_BOOT_SERPENT)
		serpent_set_key (dk, cryptoInfo->ks);
	#elif defined (TC_WINDOWS_BOOT_TWOFISH)
		twofish_set_key ((TwofishInstance *) cryptoInfo->ks, (const u4byte *) dk);
	#else
		status = EAInit (dk, cryptoInfo->ks);
		if (status == ERR_CIPHER_INIT_FAILURE)
			goto err;
	#endif
#else
		status = EAInit (cryptoInfo->ea, dk, cryptoInfo->ks);
		if (status == ERR_CIPHER_INIT_FAILURE)
			goto err;
#endif
		// Secondary key schedule
#ifdef TC_WINDOWS_BOOT_SINGLE_CIPHER_MODE
	#if defined (TC_WINDOWS_BOOT_SERPENT)
		serpent_set_key (dk + 32, cryptoInfo->ks2);
	#elif defined (TC_WINDOWS_BOOT_TWOFISH)
		twofish_set_key ((TwofishInstance *)cryptoInfo->ks2, (const u4byte *) (dk + 32));
	#else
		EAInit (dk + 32, cryptoInfo->ks2);
	#endif
#else
		EAInit (cryptoInfo->ea, dk + EAGetKeySize (cryptoInfo->ea), cryptoInfo->ks2);
#endif

		// Try to decrypt header 
		DecryptBuffer (header + HEADER_ENCRYPTED_DATA_OFFSET, HEADER_ENCRYPTED_DATA_SIZE, cryptoInfo);
		
		// Check magic 'VERA' and CRC-32 of header fields and master keydata
		if (GetHeaderField32 (header, TC_HEADER_OFFSET_MAGIC) != 0x56455241
			|| (GetHeaderField16 (header, TC_HEADER_OFFSET_VERSION) >= 4 && GetHeaderField32 (header, TC_HEADER_OFFSET_HEADER_CRC) != GetCrc32 (header + TC_HEADER_OFFSET_MAGIC, TC_HEADER_OFFSET_HEADER_CRC - TC_HEADER_OFFSET_MAGIC))
			|| GetHeaderField32 (header, TC_HEADER_OFFSET_KEY_AREA_CRC) != GetCrc32 (header + HEADER_MASTER_KEYDATA_OFFSET, MASTER_KEYDATA_SIZE))
		{
			EncryptBuffer (header + HEADER_ENCRYPTED_DATA_OFFSET, HEADER_ENCRYPTED_DATA_SIZE, cryptoInfo);
#ifdef TC_WINDOWS_BOOT_SINGLE_CIPHER_MODE
			status = ERR_PASSWORD_WRONG;
			goto err;
#else
			continue;
#endif
		}

		// Header decrypted
		status = 0;

		// Hidden volume status
		cryptoInfo->VolumeSize = GetHeaderField64 (header, TC_HEADER_OFFSET_HIDDEN_VOLUME_SIZE);
		cryptoInfo->hiddenVolume = (cryptoInfo->VolumeSize.LowPart != 0 || cryptoInfo->VolumeSize.HighPart != 0);

		// Volume size
		cryptoInfo->VolumeSize = GetHeaderField64 (header, TC_HEADER_OFFSET_VOLUME_SIZE);

		// Encrypted area size and length
		cryptoInfo->EncryptedAreaStart = GetHeaderField64 (header, TC_HEADER_OFFSET_ENCRYPTED_AREA_START);
		cryptoInfo->EncryptedAreaLength = GetHeaderField64 (header, TC_HEADER_OFFSET_ENCRYPTED_AREA_LENGTH);

		// Flags
		cryptoInfo->HeaderFlags = GetHeaderField32 (header, TC_HEADER_OFFSET_FLAGS);

#ifdef TC_WINDOWS_BOOT_SHA2
		cryptoInfo->pkcs5 = SHA256;
#else
		cryptoInfo->pkcs5 = RIPEMD160;
#endif

		memcpy (dk, header + HEADER_MASTER_KEYDATA_OFFSET, sizeof (dk));
		EncryptBuffer (header + HEADER_ENCRYPTED_DATA_OFFSET, HEADER_ENCRYPTED_DATA_SIZE, cryptoInfo);

		if (retHeaderCryptoInfo)
			goto ret;

		// Init the encryption algorithm with the decrypted master key
#ifdef TC_WINDOWS_BOOT_SINGLE_CIPHER_MODE
	#if defined (TC_WINDOWS_BOOT_SERPENT)
		serpent_set_key (dk, cryptoInfo->ks);
	#elif defined (TC_WINDOWS_BOOT_TWOFISH)
		twofish_set_key ((TwofishInstance *) cryptoInfo->ks, (const u4byte *) dk);
	#else
		status = EAInit (dk, cryptoInfo->ks);
		if (status == ERR_CIPHER_INIT_FAILURE)
			goto err;
	#endif
#else
		status = EAInit (cryptoInfo->ea, dk, cryptoInfo->ks);
		if (status == ERR_CIPHER_INIT_FAILURE)
			goto err;
#endif

		// The secondary master key (if cascade, multiple concatenated)
#ifdef TC_WINDOWS_BOOT_SINGLE_CIPHER_MODE
	#if defined (TC_WINDOWS_BOOT_SERPENT)
		serpent_set_key (dk + 32, cryptoInfo->ks2);
	#elif defined (TC_WINDOWS_BOOT_TWOFISH)
		twofish_set_key ((TwofishInstance *)cryptoInfo->ks2, (const u4byte *) (dk + 32));
	#else
		EAInit (dk + 32, cryptoInfo->ks2);
	#endif
#else
		EAInit (cryptoInfo->ea, dk + EAGetKeySize (cryptoInfo->ea), cryptoInfo->ks2);
#endif
		goto ret;
	}

	status = ERR_PASSWORD_WRONG;

err:
	if (cryptoInfo != retHeaderCryptoInfo)
	{
		crypto_close(cryptoInfo);
		*retInfo = NULL; 
	}

ret:
	burn (dk, sizeof(dk));
	return status;
}

#endif // TC_WINDOWS_BOOT


#if !defined (DEVICE_DRIVER) && !defined (TC_WINDOWS_BOOT)

#ifdef VOLFORMAT
#	include "../Format/TcFormat.h"
#	include "Dlgcode.h"
#endif

// Creates a volume header in memory
int CreateVolumeHeaderInMemory (HWND hwndDlg, BOOL bBoot, char *header, int ea, int mode, Password *password,
		   int pkcs5_prf, int pim, char *masterKeydata, PCRYPTO_INFO *retInfo,
		   unsigned __int64 volumeSize, unsigned __int64 hiddenVolumeSize,
		   unsigned __int64 encryptedAreaStart, unsigned __int64 encryptedAreaLength, uint16 requiredProgramVersion, uint32 headerFlags, uint32 sectorSize, BOOL bWipeMode)
{
	unsigned char *p = (unsigned char *) header;
	static CRYPTOPP_ALIGN_DATA(16) KEY_INFO keyInfo;

	int nUserKeyLen = password->Length;
	PCRYPTO_INFO cryptoInfo = crypto_open ();
	static char dk[MASTER_KEYDATA_SIZE];
	int x;
	int retVal = 0;
	int primaryKeyOffset;

	if (cryptoInfo == NULL)
		return ERR_OUTOFMEMORY;

	// if no PIM specified, use default value
	if (pim < 0)
		pim = 0;

	memset (header, 0, TC_VOLUME_HEADER_EFFECTIVE_SIZE);

	VirtualLock (&keyInfo, sizeof (keyInfo));
	VirtualLock (&dk, sizeof (dk));

	/* Encryption setup */

	if (masterKeydata == NULL)
	{
		// We have no master key data (creating a new volume) so we'll use the TrueCrypt RNG to generate them

		int bytesNeeded;

		switch (mode)
		{

		default:
			bytesNeeded = EAGetKeySize (ea) * 2;	// Size of primary + secondary key(s)
		}

		if (!RandgetBytes (hwndDlg, keyInfo.master_keydata, bytesNeeded, TRUE))
			return ERR_CIPHER_INIT_WEAK_KEY;
	}
	else
	{
		// We already have existing master key data (the header is being re-encrypted)
		memcpy (keyInfo.master_keydata, masterKeydata, MASTER_KEYDATA_SIZE);
	}

	// User key 
	memcpy (keyInfo.userKey, password->Text, nUserKeyLen);
	keyInfo.keyLength = nUserKeyLen;
	keyInfo.noIterations = get_pkcs5_iteration_count (pkcs5_prf, pim, FALSE, bBoot);

	// User selected encryption algorithm
	cryptoInfo->ea = ea;

	// User selected PRF
	cryptoInfo->pkcs5 = pkcs5_prf;
	cryptoInfo->bTrueCryptMode = FALSE;
	cryptoInfo->noIterations = keyInfo.noIterations;
	cryptoInfo->volumePim = pim;

	// Mode of operation
	cryptoInfo->mode = mode;

	// Salt for header key derivation
	if (!RandgetBytes (hwndDlg, keyInfo.salt, PKCS5_SALT_SIZE, !bWipeMode))
		return ERR_CIPHER_INIT_WEAK_KEY; 

	// PBKDF2 (PKCS5) is used to derive primary header key(s) and secondary header key(s) (XTS) from the password/keyfiles
	switch (pkcs5_prf)
	{
	case SHA512:
		derive_key_sha512 (keyInfo.userKey, keyInfo.keyLength, keyInfo.salt,
			PKCS5_SALT_SIZE, keyInfo.noIterations, dk, GetMaxPkcs5OutSize());
		break;

	case SHA256:
		derive_key_sha256 (keyInfo.userKey, keyInfo.keyLength, keyInfo.salt,
			PKCS5_SALT_SIZE, keyInfo.noIterations, dk, GetMaxPkcs5OutSize());
		break;

	case RIPEMD160:
		derive_key_ripemd160 (keyInfo.userKey, keyInfo.keyLength, keyInfo.salt,
			PKCS5_SALT_SIZE, keyInfo.noIterations, dk, GetMaxPkcs5OutSize());
		break;

	case WHIRLPOOL:
		derive_key_whirlpool (keyInfo.userKey, keyInfo.keyLength, keyInfo.salt,
			PKCS5_SALT_SIZE, keyInfo.noIterations, dk, GetMaxPkcs5OutSize());
		break;

	default:		
		// Unknown/wrong ID
		TC_THROW_FATAL_EXCEPTION;
	} 

	/* Header setup */

	// Salt
	mputBytes (p, keyInfo.salt, PKCS5_SALT_SIZE);	

	// Magic
	mputLong (p, 0x56455241);

	// Header version
	mputWord (p, VOLUME_HEADER_VERSION);
	cryptoInfo->HeaderVersion = VOLUME_HEADER_VERSION;

	// Required program version to handle this volume
	mputWord (p, requiredProgramVersion != 0 ? requiredProgramVersion : TC_VOLUME_MIN_REQUIRED_PROGRAM_VERSION);

	// CRC of the master key data
	x = GetCrc32(keyInfo.master_keydata, MASTER_KEYDATA_SIZE);
	mputLong (p, x);

	// Reserved fields
	p += 2 * 8;

	// Size of hidden volume (if any)
	cryptoInfo->hiddenVolumeSize = hiddenVolumeSize;
	mputInt64 (p, cryptoInfo->hiddenVolumeSize);

	cryptoInfo->hiddenVolume = cryptoInfo->hiddenVolumeSize != 0;

	// Volume size
	cryptoInfo->VolumeSize.Value = volumeSize;
	mputInt64 (p, volumeSize);

	// Encrypted area start
	cryptoInfo->EncryptedAreaStart.Value = encryptedAreaStart;
	mputInt64 (p, encryptedAreaStart);

	// Encrypted area size
	cryptoInfo->EncryptedAreaLength.Value = encryptedAreaLength;
	mputInt64 (p, encryptedAreaLength);

	// Flags
	cryptoInfo->HeaderFlags = headerFlags;
	mputLong (p, headerFlags);

	// Sector size
	if (sectorSize < TC_MIN_VOLUME_SECTOR_SIZE
		|| sectorSize > TC_MAX_VOLUME_SECTOR_SIZE
		|| sectorSize % ENCRYPTION_DATA_UNIT_SIZE != 0)
	{
		TC_THROW_FATAL_EXCEPTION;
	}

	cryptoInfo->SectorSize = sectorSize;
	mputLong (p, sectorSize);

	// CRC of the header fields
	x = GetCrc32 (header + TC_HEADER_OFFSET_MAGIC, TC_HEADER_OFFSET_HEADER_CRC - TC_HEADER_OFFSET_MAGIC);
	p = header + TC_HEADER_OFFSET_HEADER_CRC;
	mputLong (p, x);

	// The master key data
	memcpy (header + HEADER_MASTER_KEYDATA_OFFSET, keyInfo.master_keydata, MASTER_KEYDATA_SIZE);


	/* Header encryption */

	switch (mode)
	{

	default:
		// The secondary key (if cascade, multiple concatenated)
		memcpy (cryptoInfo->k2, dk + EAGetKeySize (cryptoInfo->ea), EAGetKeySize (cryptoInfo->ea));
		primaryKeyOffset = 0;
	}

	retVal = EAInit (cryptoInfo->ea, dk + primaryKeyOffset, cryptoInfo->ks);
	if (retVal != ERR_SUCCESS)
		return retVal;

	// Mode of operation
	if (!EAInitMode (cryptoInfo))
		return ERR_OUTOFMEMORY;


	// Encrypt the entire header (except the salt)
	EncryptBuffer (header + HEADER_ENCRYPTED_DATA_OFFSET,
		HEADER_ENCRYPTED_DATA_SIZE,
		cryptoInfo);


	/* cryptoInfo setup for further use (disk format) */

	// Init with the master key(s) 
	retVal = EAInit (cryptoInfo->ea, keyInfo.master_keydata + primaryKeyOffset, cryptoInfo->ks);
	if (retVal != ERR_SUCCESS)
		return retVal;

	memcpy (cryptoInfo->master_keydata, keyInfo.master_keydata, MASTER_KEYDATA_SIZE);

	switch (cryptoInfo->mode)
	{

	default:
		// The secondary master key (if cascade, multiple concatenated)
		memcpy (cryptoInfo->k2, keyInfo.master_keydata + EAGetKeySize (cryptoInfo->ea), EAGetKeySize (cryptoInfo->ea));
	}

	// Mode of operation
	if (!EAInitMode (cryptoInfo))
		return ERR_OUTOFMEMORY;


#ifdef VOLFORMAT
	if (showKeys && !bInPlaceEncNonSys)
	{
		BOOL dots3 = FALSE;
		int i, j;

		j = EAGetKeySize (ea);

		if (j > NBR_KEY_BYTES_TO_DISPLAY)
		{
			dots3 = TRUE;
			j = NBR_KEY_BYTES_TO_DISPLAY;
		}

		MasterKeyGUIView[0] = 0;
		for (i = 0; i < j; i++)
		{
			wchar_t tmp2[8] = {0};
			StringCbPrintfW (tmp2, sizeof(tmp2), L"%02X", (int) (unsigned char) keyInfo.master_keydata[i + primaryKeyOffset]);
			StringCbCatW (MasterKeyGUIView, sizeof(MasterKeyGUIView), tmp2);
		}

		HeaderKeyGUIView[0] = 0;
		for (i = 0; i < NBR_KEY_BYTES_TO_DISPLAY; i++)
		{
			wchar_t tmp2[8];
			StringCbPrintfW (tmp2, sizeof(tmp2), L"%02X", (int) (unsigned char) dk[primaryKeyOffset + i]);
			StringCbCatW (HeaderKeyGUIView, sizeof(HeaderKeyGUIView), tmp2);
		}

		if (dots3)
		{
			DisplayPortionsOfKeys (hHeaderKey, hMasterKey, HeaderKeyGUIView, MasterKeyGUIView, !showKeys);
		}
		else
		{
			SendMessage (hMasterKey, WM_SETTEXT, 0, (LPARAM) MasterKeyGUIView);
			SendMessage (hHeaderKey, WM_SETTEXT, 0, (LPARAM) HeaderKeyGUIView);
		}
	}
#endif	// #ifdef VOLFORMAT

	burn (dk, sizeof(dk));
	burn (&keyInfo, sizeof (keyInfo));

	*retInfo = cryptoInfo;
	return 0;
}


BOOL ReadEffectiveVolumeHeader (BOOL device, HANDLE fileHandle, byte *header, DWORD *bytesRead)
{
#if TC_VOLUME_HEADER_EFFECTIVE_SIZE > TC_MAX_VOLUME_SECTOR_SIZE
#error TC_VOLUME_HEADER_EFFECTIVE_SIZE > TC_MAX_VOLUME_SECTOR_SIZE
#endif

	byte sectorBuffer[TC_MAX_VOLUME_SECTOR_SIZE];
	DISK_GEOMETRY geometry;

	if (!device)
		return ReadFile (fileHandle, header, TC_VOLUME_HEADER_EFFECTIVE_SIZE, bytesRead, NULL);

	if (!DeviceIoControl (fileHandle, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0, &geometry, sizeof (geometry), bytesRead, NULL))
		return FALSE;

	if (geometry.BytesPerSector > sizeof (sectorBuffer) || geometry.BytesPerSector < TC_MIN_VOLUME_SECTOR_SIZE)
	{
		SetLastError (ERROR_INVALID_PARAMETER);
		return FALSE;
	}

	if (!ReadFile (fileHandle, sectorBuffer, max (TC_VOLUME_HEADER_EFFECTIVE_SIZE, geometry.BytesPerSector), bytesRead, NULL))
		return FALSE;

	memcpy (header, sectorBuffer, min (*bytesRead, TC_VOLUME_HEADER_EFFECTIVE_SIZE));
	
	if (*bytesRead > TC_VOLUME_HEADER_EFFECTIVE_SIZE)
		*bytesRead = TC_VOLUME_HEADER_EFFECTIVE_SIZE;

	return TRUE;
}


BOOL WriteEffectiveVolumeHeader (BOOL device, HANDLE fileHandle, byte *header)
{
#if TC_VOLUME_HEADER_EFFECTIVE_SIZE > TC_MAX_VOLUME_SECTOR_SIZE
#error TC_VOLUME_HEADER_EFFECTIVE_SIZE > TC_MAX_VOLUME_SECTOR_SIZE
#endif

	byte sectorBuffer[TC_MAX_VOLUME_SECTOR_SIZE];
	DWORD bytesDone;
	DISK_GEOMETRY geometry;

	if (!device)
	{
		if (!WriteFile (fileHandle, header, TC_VOLUME_HEADER_EFFECTIVE_SIZE, &bytesDone, NULL))
			return FALSE;

		if (bytesDone != TC_VOLUME_HEADER_EFFECTIVE_SIZE)
		{
			SetLastError (ERROR_INVALID_PARAMETER);
			return FALSE;
		}

		return TRUE;
	}

	if (!DeviceIoControl (fileHandle, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0, &geometry, sizeof (geometry), &bytesDone, NULL))
		return FALSE;

	if (geometry.BytesPerSector > sizeof (sectorBuffer) || geometry.BytesPerSector < TC_MIN_VOLUME_SECTOR_SIZE)
	{
		SetLastError (ERROR_INVALID_PARAMETER);
		return FALSE;
	}

	if (geometry.BytesPerSector != TC_VOLUME_HEADER_EFFECTIVE_SIZE)
	{
		LARGE_INTEGER seekOffset;

		if (!ReadFile (fileHandle, sectorBuffer, geometry.BytesPerSector, &bytesDone, NULL))
			return FALSE;

		if (bytesDone != geometry.BytesPerSector)
		{
			SetLastError (ERROR_INVALID_PARAMETER);
			return FALSE;
		}

		seekOffset.QuadPart = -(int) bytesDone;
		if (!SetFilePointerEx (fileHandle, seekOffset, NULL, FILE_CURRENT))
			return FALSE;
	}

	memcpy (sectorBuffer, header, TC_VOLUME_HEADER_EFFECTIVE_SIZE);

	if (!WriteFile (fileHandle, sectorBuffer, geometry.BytesPerSector, &bytesDone, NULL))
		return FALSE;

	if (bytesDone != geometry.BytesPerSector)
	{
		SetLastError (ERROR_INVALID_PARAMETER);
		return FALSE;
	}

	return TRUE;
}


// Writes randomly generated data to unused/reserved header areas.
// When bPrimaryOnly is TRUE, then only the primary header area (not the backup header area) is filled with random data.
// When bBackupOnly is TRUE, only the backup header area (not the primary header area) is filled with random data.
int WriteRandomDataToReservedHeaderAreas (HWND hwndDlg, HANDLE dev, CRYPTO_INFO *cryptoInfo, uint64 dataAreaSize, BOOL bPrimaryOnly, BOOL bBackupOnly)
{
	char temporaryKey[MASTER_KEYDATA_SIZE];
	char originalK2[MASTER_KEYDATA_SIZE];

	byte buf[TC_VOLUME_HEADER_GROUP_SIZE];

	LARGE_INTEGER offset;
	int nStatus = ERR_SUCCESS;
	DWORD dwError;
	DWORD bytesDone;
	BOOL backupHeaders = bBackupOnly;

	if (bPrimaryOnly && bBackupOnly)
		TC_THROW_FATAL_EXCEPTION;

	memcpy (originalK2, cryptoInfo->k2, sizeof (cryptoInfo->k2));

	while (TRUE)
	{
		// Temporary keys
		if (!RandgetBytes (hwndDlg, temporaryKey, EAGetKeySize (cryptoInfo->ea), FALSE)
			|| !RandgetBytes (hwndDlg, cryptoInfo->k2, sizeof (cryptoInfo->k2), FALSE))
		{
			nStatus = ERR_PARAMETER_INCORRECT; 
			goto final_seq;
		}

		nStatus = EAInit (cryptoInfo->ea, temporaryKey, cryptoInfo->ks);
		if (nStatus != ERR_SUCCESS)
			goto final_seq;

		if (!EAInitMode (cryptoInfo))
		{
			nStatus = ERR_MODE_INIT_FAILED;
			goto final_seq;
		}

		offset.QuadPart = backupHeaders ? dataAreaSize + TC_VOLUME_HEADER_GROUP_SIZE : TC_VOLUME_HEADER_OFFSET;

		if (!SetFilePointerEx (dev, offset, NULL, FILE_BEGIN))
		{
			nStatus = ERR_OS_ERROR;
			goto final_seq;
		}

		if (!ReadFile (dev, buf, sizeof (buf), &bytesDone, NULL))
		{
			nStatus = ERR_OS_ERROR;
			goto final_seq;
		}

		if (bytesDone < TC_VOLUME_HEADER_EFFECTIVE_SIZE)
		{
			SetLastError (ERROR_INVALID_PARAMETER);
			nStatus = ERR_OS_ERROR;
			goto final_seq;
		}

		EncryptBuffer (buf + TC_VOLUME_HEADER_EFFECTIVE_SIZE, sizeof (buf) - TC_VOLUME_HEADER_EFFECTIVE_SIZE, cryptoInfo);

		if (!SetFilePointerEx (dev, offset, NULL, FILE_BEGIN))
		{
			nStatus = ERR_OS_ERROR;
			goto final_seq;
		}

		if (!WriteFile (dev, buf, sizeof (buf), &bytesDone, NULL))
		{
			nStatus = ERR_OS_ERROR;
			goto final_seq;
		}

		if (bytesDone != sizeof (buf))
		{
			nStatus = ERR_PARAMETER_INCORRECT;
			goto final_seq;
		}

		if (backupHeaders || bPrimaryOnly)
			break;

		backupHeaders = TRUE;
	}

	memcpy (cryptoInfo->k2, originalK2, sizeof (cryptoInfo->k2));

	nStatus = EAInit (cryptoInfo->ea, cryptoInfo->master_keydata, cryptoInfo->ks);
	if (nStatus != ERR_SUCCESS)
		goto final_seq;

	if (!EAInitMode (cryptoInfo))
	{
		nStatus = ERR_MODE_INIT_FAILED;
		goto final_seq;
	}

final_seq:

	dwError = GetLastError();

	burn (temporaryKey, sizeof (temporaryKey));
	burn (originalK2, sizeof (originalK2));

	if (nStatus != ERR_SUCCESS)
		SetLastError (dwError);

	return nStatus;
}

#endif // !defined (DEVICE_DRIVER) && !defined (TC_WINDOWS_BOOT)