VeraCrypt
aboutsummaryrefslogtreecommitdiff
path: root/src/Common/SecurityToken.cpp
blob: 8909059dbc1bff43faf5bca07c44b3f59ba9ae10 (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
/*
 Derived from source code of TrueCrypt 7.1a, which is
 Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
 by the TrueCrypt License 3.0.

 Modifications and additions to the original source code (contained in this file) 
 and all other portions of this file are Copyright (c) 2013-2016 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 "Platform/Finally.h"
#include "Platform/ForEach.h"

#if !defined (TC_WINDOWS) || defined (TC_PROTOTYPE)
#	include "Platform/SerializerFactory.h"
#	include "Platform/StringConverter.h"
#	include "Platform/SystemException.h"
#else
#	include "Dictionary.h"
#	include "Language.h"
#endif

#ifdef TC_UNIX
#	include <dlfcn.h>
#endif

#include "SecurityToken.h"

#ifndef burn
#	define burn Memory::Erase
#endif

using namespace std;

namespace VeraCrypt
{
	SecurityTokenKeyfile::SecurityTokenKeyfile (const SecurityTokenKeyfilePath &path, char* pin)
	{
		wstring pathStr = path;
		unsigned long slotId;

		if (swscanf (pathStr.c_str(), TC_SECURITY_TOKEN_KEYFILE_URL_PREFIX TC_SECURITY_TOKEN_KEYFILE_URL_SLOT L"/%lu", &slotId) != 1)
			throw InvalidSecurityTokenKeyfilePath();

		SlotId = slotId;

		size_t keyIdPos = pathStr.find (L"/" TC_SECURITY_TOKEN_KEYFILE_URL_FILE L"/");
		if (keyIdPos == wstring::npos)
			throw InvalidSecurityTokenKeyfilePath();

		Id = pathStr.substr (keyIdPos + wstring (L"/" TC_SECURITY_TOKEN_KEYFILE_URL_FILE L"/").size());

		vector <SecurityTokenKeyfile> keyfiles = SecurityToken::GetAvailableKeyfiles (&SlotId, Id, pin);

		if (keyfiles.empty())
			throw SecurityTokenKeyfileNotFound();

		*this = keyfiles.front();
	}

	SecurityTokenKeyfile::operator SecurityTokenKeyfilePath () const
	{
		wstringstream path;
		path << TC_SECURITY_TOKEN_KEYFILE_URL_PREFIX TC_SECURITY_TOKEN_KEYFILE_URL_SLOT L"/" << SlotId << L"/" TC_SECURITY_TOKEN_KEYFILE_URL_FILE L"/" << Id;
		return path.str();
	}

	void SecurityToken::CheckLibraryStatus ()
	{
		if (!Initialized)
			throw SecurityTokenLibraryNotInitialized();
	}

	void SecurityToken::CloseLibrary ()
	{
		if (Initialized)
		{
			CloseAllSessions();
			Pkcs11Functions->C_Finalize (NULL_PTR);

#ifdef TC_WINDOWS
			FreeLibrary (Pkcs11LibraryHandle);
#else
			dlclose (Pkcs11LibraryHandle);
#endif
			Initialized = false;
		}
	}

	void SecurityToken::CloseAllSessions () throw ()
	{
		if (!Initialized)
			return;

		typedef pair <CK_SLOT_ID, Pkcs11Session> SessionMapPair;

		foreach (SessionMapPair p, Sessions)
		{
			try
			{
				CloseSession (p.first);
			}
			catch (...) { }
		}
	}

	void SecurityToken::CloseSession (CK_SLOT_ID slotId)
	{
		if (Sessions.find (slotId) == Sessions.end())
			throw ParameterIncorrect (SRC_POS);

		Pkcs11Functions->C_CloseSession (Sessions[slotId].Handle);
		Sessions.erase (Sessions.find (slotId));
	}

	void SecurityToken::CreateKeyfile (CK_SLOT_ID slotId, vector <byte> &keyfileData, const string &name)
	{
		if (name.empty())
			throw ParameterIncorrect (SRC_POS);

		LoginUserIfRequired (slotId);

		foreach (const SecurityTokenKeyfile &keyfile, GetAvailableKeyfiles (&slotId))
		{
			if (keyfile.IdUtf8 == name)
				throw SecurityTokenKeyfileAlreadyExists();
		}

		CK_OBJECT_CLASS dataClass = CKO_DATA;
		CK_BBOOL trueVal = CK_TRUE;

		CK_ATTRIBUTE keyfileTemplate[] =
		{
			{ CKA_CLASS, &dataClass, sizeof (dataClass) },
			{ CKA_TOKEN, &trueVal, sizeof (trueVal) },
			{ CKA_PRIVATE, &trueVal, sizeof (trueVal) },
			{ CKA_LABEL, (CK_UTF8CHAR *) name.c_str(), (CK_ULONG) name.size() },
			{ CKA_VALUE, &keyfileData.front(), (CK_ULONG) keyfileData.size() }
		};

		CK_OBJECT_HANDLE keyfileHandle;

		CK_RV status = Pkcs11Functions->C_CreateObject (Sessions[slotId].Handle, keyfileTemplate, array_capacity (keyfileTemplate), &keyfileHandle);

		switch (status)
		{
		case CKR_DATA_LEN_RANGE:
			status = CKR_DEVICE_MEMORY;
			break;

		case CKR_SESSION_READ_ONLY:
			status = CKR_TOKEN_WRITE_PROTECTED;
			break;
		}

		if (status != CKR_OK)
			throw Pkcs11Exception (status);

		// Some tokens report success even if the new object was truncated to fit in the available memory
		vector <byte> objectData;

		GetObjectAttribute (slotId, keyfileHandle, CKA_VALUE, objectData);
		finally_do_arg (vector <byte> *, &objectData, { if (!finally_arg->empty()) burn (&finally_arg->front(), finally_arg->size()); });

		if (objectData.size() != keyfileData.size())
		{
			Pkcs11Functions->C_DestroyObject (Sessions[slotId].Handle, keyfileHandle);
			throw Pkcs11Exception (CKR_DEVICE_MEMORY);
		}
	}

	void SecurityToken::DeleteKeyfile (const SecurityTokenKeyfile &keyfile)
	{
		LoginUserIfRequired (keyfile.SlotId);
		
		CK_RV status = Pkcs11Functions->C_DestroyObject (Sessions[keyfile.SlotId].Handle, keyfile.Handle);
		if (status != CKR_OK)
			throw Pkcs11Exception (status);
	}

	vector <SecurityTokenKeyfile> SecurityToken::GetAvailableKeyfiles (CK_SLOT_ID *slotIdFilter, const wstring keyfileIdFilter, char* pin)
	{
		bool unrecognizedTokenPresent = false;
		vector <SecurityTokenKeyfile> keyfiles;

		foreach (const CK_SLOT_ID &slotId, GetTokenSlots())
		{
			SecurityTokenInfo token;

			if (slotIdFilter && *slotIdFilter != slotId)
				continue;

			try
			{
				LoginUserIfRequired (slotId, pin);
				token = GetTokenInfo (slotId);
			}
			catch (UserAbort &)
			{
				continue;
			}
			catch (Pkcs11Exception &e)
			{
				if (e.GetErrorCode() == CKR_TOKEN_NOT_RECOGNIZED)
				{
					unrecognizedTokenPresent = true;
					continue;
				}

				throw;
			}

			foreach (const CK_OBJECT_HANDLE &dataHandle, GetObjects (slotId, CKO_DATA))
			{
				SecurityTokenKeyfile keyfile;
				keyfile.Handle = dataHandle;
				keyfile.SlotId = slotId;
				keyfile.Token = token;

				vector <byte> privateAttrib;
				GetObjectAttribute (slotId, dataHandle, CKA_PRIVATE, privateAttrib);

				if (privateAttrib.size() == sizeof (CK_BBOOL) && *(CK_BBOOL *) &privateAttrib.front() != CK_TRUE)
					continue;

				vector <byte> label;
				GetObjectAttribute (slotId, dataHandle, CKA_LABEL, label);
				label.push_back (0);

				keyfile.IdUtf8 = (char *) &label.front();

#if defined (TC_WINDOWS) && !defined (TC_PROTOTYPE)
				keyfile.Id = Utf8StringToWide ((const char *) &label.front());
#else
				keyfile.Id = StringConverter::ToWide ((const char *) &label.front());
#endif
				if (keyfile.Id.empty() || (!keyfileIdFilter.empty() && keyfileIdFilter != keyfile.Id))
					continue;

				keyfiles.push_back (keyfile);

				if (!keyfileIdFilter.empty())
					break;
			}
		}

		if (keyfiles.empty() && unrecognizedTokenPresent)
			throw Pkcs11Exception (CKR_TOKEN_NOT_RECOGNIZED);

		return keyfiles;
	}

	list <SecurityTokenInfo> SecurityToken::GetAvailableTokens ()
	{
		bool unrecognizedTokenPresent = false;
		list <SecurityTokenInfo> tokens;

		foreach (const CK_SLOT_ID &slotId, GetTokenSlots())
		{
			try
			{
				tokens.push_back (GetTokenInfo (slotId));
			}
			catch (Pkcs11Exception &e)
			{
				if (e.GetErrorCode() == CKR_TOKEN_NOT_RECOGNIZED)
				{
					unrecognizedTokenPresent = true;
					continue;
				}

				throw;
			}
		}

		if (tokens.empty() && unrecognizedTokenPresent)
			throw Pkcs11Exception (CKR_TOKEN_NOT_RECOGNIZED);

		return tokens;
	}

	SecurityTokenInfo SecurityToken::GetTokenInfo (CK_SLOT_ID slotId)
	{
		CK_TOKEN_INFO info;
		CK_RV status = Pkcs11Functions->C_GetTokenInfo (slotId, &info);
		if (status != CKR_OK)
			throw Pkcs11Exception (status);

		SecurityTokenInfo token;
		token.SlotId = slotId;
		token.Flags = info.flags;

		char label[sizeof (info.label) + 1];
		memset (label, 0, sizeof (label));
		memcpy (label, info.label, sizeof (info.label));

		token.LabelUtf8 = label;

		size_t lastSpace = token.LabelUtf8.find_last_not_of (' ');
		if (lastSpace == string::npos)
			token.LabelUtf8.clear();
		else
			token.LabelUtf8 = token.LabelUtf8.substr (0, lastSpace + 1);

#if defined (TC_WINDOWS) && !defined (TC_PROTOTYPE)
		token.Label = Utf8StringToWide (token.LabelUtf8);
#else
		token.Label = StringConverter::ToWide (token.LabelUtf8);
#endif
		return token;
	}

	void SecurityToken::GetKeyfileData (const SecurityTokenKeyfile &keyfile, vector <byte> &keyfileData)
	{
		GetKeyfileData (keyfile, nullptr, keyfileData);
	}

	void SecurityToken::GetKeyfileData (const SecurityTokenKeyfile &keyfile, char* pin, vector <byte> &keyfileData)
	{
		LoginUserIfRequired (keyfile.SlotId, pin);
		GetObjectAttribute (keyfile.SlotId, keyfile.Handle, CKA_VALUE, keyfileData);
	}

	vector <CK_OBJECT_HANDLE> SecurityToken::GetObjects (CK_SLOT_ID slotId, CK_ATTRIBUTE_TYPE objectClass)
	{
		if (Sessions.find (slotId) == Sessions.end())
			throw ParameterIncorrect (SRC_POS);

		CK_ATTRIBUTE findTemplate;
		findTemplate.type = CKA_CLASS;
		findTemplate.pValue = &objectClass;
		findTemplate.ulValueLen = sizeof (objectClass);

		CK_RV status = Pkcs11Functions->C_FindObjectsInit (Sessions[slotId].Handle, &findTemplate, 1);
		if (status != CKR_OK)
			throw Pkcs11Exception (status);

		finally_do_arg (CK_SLOT_ID, slotId, { Pkcs11Functions->C_FindObjectsFinal (Sessions[finally_arg].Handle); });

		CK_ULONG objectCount;	
		vector <CK_OBJECT_HANDLE> objects;

		while (true)
		{
			CK_OBJECT_HANDLE object;
			CK_RV status = Pkcs11Functions->C_FindObjects (Sessions[slotId].Handle, &object, 1, &objectCount);
			if (status != CKR_OK)
				throw Pkcs11Exception (status);

			if (objectCount != 1)
				break;

			objects.push_back (object);
		}

		return objects;
	}

	void SecurityToken::GetObjectAttribute (CK_SLOT_ID slotId, CK_OBJECT_HANDLE tokenObject, CK_ATTRIBUTE_TYPE attributeType, vector <byte> &attributeValue)
	{
		attributeValue.clear();

		if (Sessions.find (slotId) == Sessions.end())
			throw ParameterIncorrect (SRC_POS);

		CK_ATTRIBUTE attribute;
		attribute.type = attributeType;
		attribute.pValue = NULL_PTR;

		CK_RV status = Pkcs11Functions->C_GetAttributeValue (Sessions[slotId].Handle, tokenObject, &attribute, 1);
		if (status != CKR_OK)
			throw Pkcs11Exception (status);

		if (attribute.ulValueLen == 0)
			return;

		attributeValue = vector <byte> (attribute.ulValueLen);
		attribute.pValue = &attributeValue.front();

		status = Pkcs11Functions->C_GetAttributeValue (Sessions[slotId].Handle, tokenObject, &attribute, 1);
		if (status != CKR_OK)
			throw Pkcs11Exception (status);
	}

	list <CK_SLOT_ID> SecurityToken::GetTokenSlots ()
	{
		CheckLibraryStatus();

		list <CK_SLOT_ID> slots;
		CK_ULONG slotCount;

		CK_RV status = Pkcs11Functions->C_GetSlotList (TRUE, NULL_PTR, &slotCount);
		if (status != CKR_OK)
			throw Pkcs11Exception (status);

		if (slotCount > 0)
		{
			vector <CK_SLOT_ID> slotArray (slotCount);
			status = Pkcs11Functions->C_GetSlotList (TRUE, &slotArray.front(), &slotCount);
			if (status != CKR_OK)
				throw Pkcs11Exception (status);

			for (size_t i = 0; i < slotCount; i++)
			{
				CK_SLOT_INFO slotInfo;
				status = Pkcs11Functions->C_GetSlotInfo (slotArray[i], &slotInfo);

				if (status != CKR_OK || !(slotInfo.flags & CKF_TOKEN_PRESENT))
					continue;

				slots.push_back (slotArray[i]);
			}
		}

		return slots;
	}

	bool SecurityToken::IsKeyfilePathValid (const wstring &securityTokenKeyfilePath)
	{
		return securityTokenKeyfilePath.find (TC_SECURITY_TOKEN_KEYFILE_URL_PREFIX) == 0;
	}

	void SecurityToken::Login (CK_SLOT_ID slotId, const char* pin)
	{
		if (Sessions.find (slotId) == Sessions.end())
			OpenSession (slotId);
		else if (Sessions[slotId].UserLoggedIn)
			return;

		size_t pinLen = pin? strlen (pin) : 0;
		CK_RV status = Pkcs11Functions->C_Login (Sessions[slotId].Handle, CKU_USER, (CK_CHAR_PTR) pin, (CK_ULONG) pinLen);

		if (status != CKR_OK)
			throw Pkcs11Exception (status);

		Sessions[slotId].UserLoggedIn = true;
	}

	void SecurityToken::LoginUserIfRequired (CK_SLOT_ID slotId, char* cmdPin)
	{
		CheckLibraryStatus();
		CK_RV status;

		if (Sessions.find (slotId) == Sessions.end())
		{
			OpenSession (slotId);
		}
		else
		{
			CK_SESSION_INFO sessionInfo;
			status = Pkcs11Functions->C_GetSessionInfo (Sessions[slotId].Handle, &sessionInfo);
			
			if (status == CKR_OK)
			{
				Sessions[slotId].UserLoggedIn = (sessionInfo.state == CKS_RO_USER_FUNCTIONS || sessionInfo.state == CKS_RW_USER_FUNCTIONS);
			}
			else
			{
				try
				{
					CloseSession (slotId);
				}
				catch (...) { }
				OpenSession (slotId);
			}
		}

		SecurityTokenInfo tokenInfo = GetTokenInfo (slotId);

		while (!Sessions[slotId].UserLoggedIn && (tokenInfo.Flags & CKF_LOGIN_REQUIRED))
		{
			try
			{
				if (tokenInfo.Flags & CKF_PROTECTED_AUTHENTICATION_PATH)
				{
					status = Pkcs11Functions->C_Login (Sessions[slotId].Handle, CKU_USER, NULL_PTR, 0);
					if (status != CKR_OK)
						throw Pkcs11Exception (status);
				}
				else if (cmdPin && cmdPin [0])
				{
					Login (slotId, cmdPin);
				}
				else
				{
					string pin = tokenInfo.LabelUtf8;
					if (tokenInfo.Label.empty())
					{
						stringstream s;
						s << "#" << slotId;
						pin = s.str();
					}

					finally_do_arg (string*, &pin, { burn ((void *) finally_arg->c_str(), finally_arg->size()); });

					(*PinCallback) (pin);
					Login (slotId, pin.c_str());
				}

				Sessions[slotId].UserLoggedIn = true;
			}
			catch (Pkcs11Exception &e)
			{
				CK_RV error = e.GetErrorCode();

				if (error == CKR_USER_ALREADY_LOGGED_IN)
				{
					break;
				}
				else if (error == CKR_PIN_INCORRECT && !(tokenInfo.Flags & CKF_PROTECTED_AUTHENTICATION_PATH))
				{
					if (cmdPin && cmdPin [0])
					{
						// clear wrong PIN
						size_t cmdPinLen = strlen (cmdPin);
						burn (cmdPin, cmdPinLen);
					}
					(*WarningCallback) (Pkcs11Exception (CKR_PIN_INCORRECT));
					continue;
				}

				throw;
			}
		}
	}

#ifdef TC_WINDOWS
	void SecurityToken::InitLibrary (const wstring &pkcs11LibraryPath, auto_ptr <GetPinFunctor> pinCallback, auto_ptr <SendExceptionFunctor> warningCallback)
#else
	void SecurityToken::InitLibrary (const string &pkcs11LibraryPath, auto_ptr <GetPinFunctor> pinCallback, auto_ptr <SendExceptionFunctor> warningCallback)
#endif
	{
		if (Initialized)
			CloseLibrary();

#ifdef TC_WINDOWS
		Pkcs11LibraryHandle = LoadLibraryW (pkcs11LibraryPath.c_str());
		throw_sys_if (!Pkcs11LibraryHandle);
#else
		Pkcs11LibraryHandle = dlopen (pkcs11LibraryPath.c_str(), RTLD_NOW | RTLD_LOCAL);
		throw_sys_sub_if (!Pkcs11LibraryHandle, dlerror());
#endif
		

		typedef CK_RV (*C_GetFunctionList_t) (CK_FUNCTION_LIST_PTR_PTR ppFunctionList);
#ifdef TC_WINDOWS
		C_GetFunctionList_t C_GetFunctionList = (C_GetFunctionList_t) GetProcAddress (Pkcs11LibraryHandle, "C_GetFunctionList");
#else
		C_GetFunctionList_t C_GetFunctionList = (C_GetFunctionList_t) dlsym (Pkcs11LibraryHandle, "C_GetFunctionList");
#endif

		if (!C_GetFunctionList)
			throw SecurityTokenLibraryNotInitialized();

		CK_RV status = C_GetFunctionList (&Pkcs11Functions);
		if (status != CKR_OK)
			throw Pkcs11Exception (status);

		status = Pkcs11Functions->C_Initialize (NULL_PTR);
		if (status != CKR_OK)
			throw Pkcs11Exception (status);

		PinCallback = pinCallback;
		WarningCallback = warningCallback;

		Initialized = true;
	}

	void SecurityToken::OpenSession (CK_SLOT_ID slotId)
	{
		if (Sessions.find (slotId) != Sessions.end())
			return;

		CK_SESSION_HANDLE session;

		CK_FLAGS flags = CKF_SERIAL_SESSION;

		if (!(GetTokenInfo (slotId).Flags & CKF_WRITE_PROTECTED))
			 flags |= CKF_RW_SESSION;

		CK_RV status = Pkcs11Functions->C_OpenSession (slotId, flags, NULL_PTR, NULL_PTR, &session);
		if (status != CKR_OK)
			throw Pkcs11Exception (status);

		Sessions[slotId].Handle = session;
	}

	Pkcs11Exception::operator string () const
	{
		if (ErrorCode == CKR_OK)
			return string();

		static const struct
		{
			CK_RV ErrorCode;
			const char *ErrorString;
		} ErrorStrings[] =
		{
#			define TC_TOKEN_ERR(CODE) { CODE, #CODE },

			TC_TOKEN_ERR (CKR_CANCEL)
			TC_TOKEN_ERR (CKR_HOST_MEMORY)
			TC_TOKEN_ERR (CKR_SLOT_ID_INVALID)
			TC_TOKEN_ERR (CKR_GENERAL_ERROR)
			TC_TOKEN_ERR (CKR_FUNCTION_FAILED)
			TC_TOKEN_ERR (CKR_ARGUMENTS_BAD)
			TC_TOKEN_ERR (CKR_NO_EVENT)
			TC_TOKEN_ERR (CKR_NEED_TO_CREATE_THREADS)
			TC_TOKEN_ERR (CKR_CANT_LOCK)
			TC_TOKEN_ERR (CKR_ATTRIBUTE_READ_ONLY)
			TC_TOKEN_ERR (CKR_ATTRIBUTE_SENSITIVE)
			TC_TOKEN_ERR (CKR_ATTRIBUTE_TYPE_INVALID)
			TC_TOKEN_ERR (CKR_ATTRIBUTE_VALUE_INVALID)
			TC_TOKEN_ERR (CKR_DATA_INVALID)
			TC_TOKEN_ERR (CKR_DATA_LEN_RANGE)
			TC_TOKEN_ERR (CKR_DEVICE_ERROR)
			TC_TOKEN_ERR (CKR_DEVICE_MEMORY)
			TC_TOKEN_ERR (CKR_DEVICE_REMOVED)
			TC_TOKEN_ERR (CKR_ENCRYPTED_DATA_INVALID)
			TC_TOKEN_ERR (CKR_ENCRYPTED_DATA_LEN_RANGE)
			TC_TOKEN_ERR (CKR_FUNCTION_CANCELED)
			TC_TOKEN_ERR (CKR_FUNCTION_NOT_PARALLEL)
			TC_TOKEN_ERR (CKR_FUNCTION_NOT_SUPPORTED)
			TC_TOKEN_ERR (CKR_KEY_HANDLE_INVALID)
			TC_TOKEN_ERR (CKR_KEY_SIZE_RANGE)
			TC_TOKEN_ERR (CKR_KEY_TYPE_INCONSISTENT)
			TC_TOKEN_ERR (CKR_KEY_NOT_NEEDED)
			TC_TOKEN_ERR (CKR_KEY_CHANGED)
			TC_TOKEN_ERR (CKR_KEY_NEEDED)
			TC_TOKEN_ERR (CKR_KEY_INDIGESTIBLE)
			TC_TOKEN_ERR (CKR_KEY_FUNCTION_NOT_PERMITTED)
			TC_TOKEN_ERR (CKR_KEY_NOT_WRAPPABLE)
			TC_TOKEN_ERR (CKR_KEY_UNEXTRACTABLE)
			TC_TOKEN_ERR (CKR_MECHANISM_INVALID)
			TC_TOKEN_ERR (CKR_MECHANISM_PARAM_INVALID)
			TC_TOKEN_ERR (CKR_OBJECT_HANDLE_INVALID)
			TC_TOKEN_ERR (CKR_OPERATION_ACTIVE)
			TC_TOKEN_ERR (CKR_OPERATION_NOT_INITIALIZED)
			TC_TOKEN_ERR (CKR_PIN_INCORRECT)
			TC_TOKEN_ERR (CKR_PIN_INVALID)
			TC_TOKEN_ERR (CKR_PIN_LEN_RANGE)
			TC_TOKEN_ERR (CKR_PIN_EXPIRED)
			TC_TOKEN_ERR (CKR_PIN_LOCKED)
			TC_TOKEN_ERR (CKR_SESSION_CLOSED)
			TC_TOKEN_ERR (CKR_SESSION_COUNT)
			TC_TOKEN_ERR (CKR_SESSION_HANDLE_INVALID)
			TC_TOKEN_ERR (CKR_SESSION_PARALLEL_NOT_SUPPORTED)
			TC_TOKEN_ERR (CKR_SESSION_READ_ONLY)
			TC_TOKEN_ERR (CKR_SESSION_EXISTS)
			TC_TOKEN_ERR (CKR_SESSION_READ_ONLY_EXISTS)
			TC_TOKEN_ERR (CKR_SESSION_READ_WRITE_SO_EXISTS)
			TC_TOKEN_ERR (CKR_SIGNATURE_INVALID)
			TC_TOKEN_ERR (CKR_SIGNATURE_LEN_RANGE)
			TC_TOKEN_ERR (CKR_TEMPLATE_INCOMPLETE)
			TC_TOKEN_ERR (CKR_TEMPLATE_INCONSISTENT)
			TC_TOKEN_ERR (CKR_TOKEN_NOT_PRESENT)
			TC_TOKEN_ERR (CKR_TOKEN_NOT_RECOGNIZED)
			TC_TOKEN_ERR (CKR_TOKEN_WRITE_PROTECTED)
			TC_TOKEN_ERR (CKR_UNWRAPPING_KEY_HANDLE_INVALID)
			TC_TOKEN_ERR (CKR_UNWRAPPING_KEY_SIZE_RANGE)
			TC_TOKEN_ERR (CKR_UNWRAPPING_KEY_TYPE_INCONSISTENT)
			TC_TOKEN_ERR (CKR_USER_ALREADY_LOGGED_IN)
			TC_TOKEN_ERR (CKR_USER_NOT_LOGGED_IN)
			TC_TOKEN_ERR (CKR_USER_PIN_NOT_INITIALIZED)
			TC_TOKEN_ERR (CKR_USER_TYPE_INVALID)
			TC_TOKEN_ERR (CKR_USER_ANOTHER_ALREADY_LOGGED_IN)
			TC_TOKEN_ERR (CKR_USER_TOO_MANY_TYPES)
			TC_TOKEN_ERR (CKR_WRAPPED_KEY_INVALID)
			TC_TOKEN_ERR (CKR_WRAPPED_KEY_LEN_RANGE)
			TC_TOKEN_ERR (CKR_WRAPPING_KEY_HANDLE_INVALID)
			TC_TOKEN_ERR (CKR_WRAPPING_KEY_SIZE_RANGE)
			TC_TOKEN_ERR (CKR_WRAPPING_KEY_TYPE_INCONSISTENT)
			TC_TOKEN_ERR (CKR_RANDOM_SEED_NOT_SUPPORTED)
			TC_TOKEN_ERR (CKR_RANDOM_NO_RNG)
			TC_TOKEN_ERR (CKR_DOMAIN_PARAMS_INVALID)
			TC_TOKEN_ERR (CKR_BUFFER_TOO_SMALL)
			TC_TOKEN_ERR (CKR_SAVED_STATE_INVALID)
			TC_TOKEN_ERR (CKR_INFORMATION_SENSITIVE)
			TC_TOKEN_ERR (CKR_STATE_UNSAVEABLE)
			TC_TOKEN_ERR (CKR_CRYPTOKI_NOT_INITIALIZED)
			TC_TOKEN_ERR (CKR_CRYPTOKI_ALREADY_INITIALIZED)
			TC_TOKEN_ERR (CKR_MUTEX_BAD)
			TC_TOKEN_ERR (CKR_MUTEX_NOT_LOCKED)
			TC_TOKEN_ERR (CKR_NEW_PIN_MODE)
			TC_TOKEN_ERR (CKR_NEXT_OTP)
			TC_TOKEN_ERR (CKR_FUNCTION_REJECTED)

#undef		TC_TOKEN_ERR
		};


		for (size_t i = 0; i < array_capacity (ErrorStrings); ++i)
		{
			if (ErrorStrings[i].ErrorCode == ErrorCode)
				return ErrorStrings[i].ErrorString;
		}

		stringstream s;
		s << "0x" << hex << ErrorCode;
		return s.str();

	}

#ifdef TC_HEADER_Common_Exception
	void Pkcs11Exception::Show (HWND parent) const
	{
		string errorString = string (*this);

		if (!errorString.empty())
		{
			wstringstream subjectErrorCode;
			if (SubjectErrorCodeValid)
				subjectErrorCode << L": " << SubjectErrorCode;

			if (!GetDictionaryValue (errorString.c_str()))
			{
				if (errorString.find ("CKR_") == 0)
				{
					errorString = errorString.substr (4);
					for (size_t i = 0; i < errorString.size(); ++i)
					{
						if (errorString[i] == '_')
							errorString[i] = ' ';
					}
				}
				wchar_t err[8192];
				StringCbPrintfW (err, sizeof(err),L"%s:\n\n%hs%s", GetString ("SECURITY_TOKEN_ERROR"), errorString.c_str(), subjectErrorCode.str().c_str());
				ErrorDirect (err, parent);
			}
			else
			{
				wstring err = GetString (errorString.c_str());

				if (SubjectErrorCodeValid)
					err += L"\n\nError code" + subjectErrorCode.str();

				ErrorDirect (err.c_str(), parent);
			}
		}
	}
#endif // TC_HEADER_Common_Exception

	auto_ptr <GetPinFunctor> SecurityToken::PinCallback;
	auto_ptr <SendExceptionFunctor> SecurityToken::WarningCallback;

	bool SecurityToken::Initialized;
	CK_FUNCTION_LIST_PTR SecurityToken::Pkcs11Functions;
	map <CK_SLOT_ID, Pkcs11Session> SecurityToken::Sessions;

#ifdef TC_WINDOWS
	HMODULE SecurityToken::Pkcs11LibraryHandle;
#else
	void *SecurityToken::Pkcs11LibraryHandle;
#endif

#ifdef TC_HEADER_Platform_Exception

	void Pkcs11Exception::Deserialize (shared_ptr <Stream> stream)
	{
		Exception::Deserialize (stream);
		Serializer sr (stream);
		uint64 code;
		sr.Deserialize ("ErrorCode", code);
		sr.Deserialize ("SubjectErrorCodeValid", SubjectErrorCodeValid);
		sr.Deserialize ("SubjectErrorCode", SubjectErrorCode);
		ErrorCode = (CK_RV) code;
	}

	void Pkcs11Exception::Serialize (shared_ptr <Stream> stream) const
	{
		Exception::Serialize (stream);
		Serializer sr (stream);
		sr.Serialize ("ErrorCode", (uint64) ErrorCode);
		sr.Serialize ("SubjectErrorCodeValid", SubjectErrorCodeValid);
		sr.Serialize ("SubjectErrorCode", SubjectErrorCode);
	}

#	define TC_EXCEPTION(TYPE) TC_SERIALIZER_FACTORY_ADD(TYPE)
#	undef TC_EXCEPTION_NODECL
#	define TC_EXCEPTION_NODECL(TYPE) TC_SERIALIZER_FACTORY_ADD(TYPE)

	TC_SERIALIZER_FACTORY_ADD_EXCEPTION_SET (SecurityTokenException);

#endif
}