forked from openssl/openssl
-
Notifications
You must be signed in to change notification settings - Fork 0
/
e_capi.c
1927 lines (1682 loc) · 54.7 KB
/
e_capi.c
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
/*
* Copyright 2008-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/* We need to use some deprecated APIs */
#define OPENSSL_SUPPRESS_DEPRECATED
#ifdef _WIN32
# ifndef _WIN32_WINNT
# define _WIN32_WINNT 0x0400
# endif
# include <windows.h>
# include <wincrypt.h>
# include <stdio.h>
# include <string.h>
# include <stdlib.h>
# include <malloc.h>
# ifndef alloca
# define alloca _alloca
# endif
# include <openssl/crypto.h>
# ifndef OPENSSL_NO_CAPIENG
# include <openssl/buffer.h>
# include <openssl/bn.h>
# include <openssl/rsa.h>
# include <openssl/dsa.h>
/*
* This module uses several "new" interfaces, among which is
* CertGetCertificateContextProperty. CERT_KEY_PROV_INFO_PROP_ID is
* one of possible values you can pass to function in question. By
* checking if it's defined we can see if wincrypt.h and accompanying
* crypt32.lib are in shape. The native MingW32 headers up to and
* including __W32API_VERSION 3.14 lack of struct DSSPUBKEY and the
* defines CERT_STORE_PROV_SYSTEM_A and CERT_STORE_READONLY_FLAG,
* so we check for these too and avoid compiling.
* Yes, it's rather "weak" test and if compilation fails,
* then re-configure with -DOPENSSL_NO_CAPIENG.
*/
# if defined(CERT_KEY_PROV_INFO_PROP_ID) && \
defined(CERT_STORE_PROV_SYSTEM_A) && \
defined(CERT_STORE_READONLY_FLAG)
# define __COMPILE_CAPIENG
# endif /* CERT_KEY_PROV_INFO_PROP_ID */
# endif /* OPENSSL_NO_CAPIENG */
#endif /* _WIN32 */
#ifdef __COMPILE_CAPIENG
# undef X509_EXTENSIONS
/* Definitions which may be missing from earlier version of headers */
# ifndef CERT_STORE_OPEN_EXISTING_FLAG
# define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
# endif
# ifndef CERT_STORE_CREATE_NEW_FLAG
# define CERT_STORE_CREATE_NEW_FLAG 0x00002000
# endif
# ifndef CERT_SYSTEM_STORE_CURRENT_USER
# define CERT_SYSTEM_STORE_CURRENT_USER 0x00010000
# endif
# ifndef ALG_SID_SHA_256
# define ALG_SID_SHA_256 12
# endif
# ifndef ALG_SID_SHA_384
# define ALG_SID_SHA_384 13
# endif
# ifndef ALG_SID_SHA_512
# define ALG_SID_SHA_512 14
# endif
# ifndef CALG_SHA_256
# define CALG_SHA_256 (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SHA_256)
# endif
# ifndef CALG_SHA_384
# define CALG_SHA_384 (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SHA_384)
# endif
# ifndef CALG_SHA_512
# define CALG_SHA_512 (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SHA_512)
# endif
# ifndef PROV_RSA_AES
# define PROV_RSA_AES 24
# endif
# include <openssl/engine.h>
# include <openssl/pem.h>
# include <openssl/x509v3.h>
# include "e_capi_err.h"
# include "e_capi_err.c"
static const char *engine_capi_id = "capi";
static const char *engine_capi_name = "CryptoAPI ENGINE";
typedef struct CAPI_CTX_st CAPI_CTX;
typedef struct CAPI_KEY_st CAPI_KEY;
static void capi_addlasterror(void);
static void capi_adderror(DWORD err);
static void CAPI_trace(CAPI_CTX *ctx, char *format, ...);
static int capi_list_providers(CAPI_CTX *ctx, BIO *out);
static int capi_list_containers(CAPI_CTX *ctx, BIO *out);
int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *storename);
void capi_free_key(CAPI_KEY *key);
static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id,
HCERTSTORE hstore);
CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id);
static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
UI_METHOD *ui_method, void *callback_data);
static int capi_rsa_sign(int dtype, const unsigned char *m,
unsigned int m_len, unsigned char *sigret,
unsigned int *siglen, const RSA *rsa);
static int capi_rsa_priv_enc(int flen, const unsigned char *from,
unsigned char *to, RSA *rsa, int padding);
static int capi_rsa_priv_dec(int flen, const unsigned char *from,
unsigned char *to, RSA *rsa, int padding);
static int capi_rsa_free(RSA *rsa);
# ifndef OPENSSL_NO_DSA
static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
DSA *dsa);
static int capi_dsa_free(DSA *dsa);
# endif
static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
STACK_OF(X509_NAME) *ca_dn, X509 **pcert,
EVP_PKEY **pkey, STACK_OF(X509) **pother,
UI_METHOD *ui_method,
void *callback_data);
static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
# ifdef OPENSSL_CAPIENG_DIALOG
static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
# endif
void engine_load_capi_int(void);
typedef PCCERT_CONTEXT(WINAPI *CERTDLG)(HCERTSTORE, HWND, LPCWSTR,
LPCWSTR, DWORD, DWORD, void *);
typedef HWND(WINAPI *GETCONSWIN)(void);
/*
* This structure contains CAPI ENGINE specific data: it contains various
* global options and affects how other functions behave.
*/
# define CAPI_DBG_TRACE 2
# define CAPI_DBG_ERROR 1
struct CAPI_CTX_st {
int debug_level;
char *debug_file;
/* Parameters to use for container lookup */
DWORD keytype;
LPSTR cspname;
DWORD csptype;
/* Certificate store name to use */
LPSTR storename;
LPSTR ssl_client_store;
/* System store flags */
DWORD store_flags;
/* Lookup string meanings in load_private_key */
# define CAPI_LU_SUBSTR 1 /* Substring of subject: uses "storename" */
# define CAPI_LU_FNAME 2 /* Friendly name: uses storename */
# define CAPI_LU_CONTNAME 3 /* Container name: uses cspname, keytype */
int lookup_method;
/* Info to dump with dumpcerts option */
# define CAPI_DMP_SUMMARY 0x1 /* Issuer and serial name strings */
# define CAPI_DMP_FNAME 0x2 /* Friendly name */
# define CAPI_DMP_FULL 0x4 /* Full X509_print dump */
# define CAPI_DMP_PEM 0x8 /* Dump PEM format certificate */
# define CAPI_DMP_PSKEY 0x10 /* Dump pseudo key (if possible) */
# define CAPI_DMP_PKEYINFO 0x20 /* Dump key info (if possible) */
DWORD dump_flags;
int (*client_cert_select) (ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
CERTDLG certselectdlg;
GETCONSWIN getconswindow;
};
static CAPI_CTX *capi_ctx_new(void);
static void capi_ctx_free(CAPI_CTX *ctx);
static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type,
int check);
static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx);
# define CAPI_CMD_LIST_CERTS ENGINE_CMD_BASE
# define CAPI_CMD_LOOKUP_CERT (ENGINE_CMD_BASE + 1)
# define CAPI_CMD_DEBUG_LEVEL (ENGINE_CMD_BASE + 2)
# define CAPI_CMD_DEBUG_FILE (ENGINE_CMD_BASE + 3)
# define CAPI_CMD_KEYTYPE (ENGINE_CMD_BASE + 4)
# define CAPI_CMD_LIST_CSPS (ENGINE_CMD_BASE + 5)
# define CAPI_CMD_SET_CSP_IDX (ENGINE_CMD_BASE + 6)
# define CAPI_CMD_SET_CSP_NAME (ENGINE_CMD_BASE + 7)
# define CAPI_CMD_SET_CSP_TYPE (ENGINE_CMD_BASE + 8)
# define CAPI_CMD_LIST_CONTAINERS (ENGINE_CMD_BASE + 9)
# define CAPI_CMD_LIST_OPTIONS (ENGINE_CMD_BASE + 10)
# define CAPI_CMD_LOOKUP_METHOD (ENGINE_CMD_BASE + 11)
# define CAPI_CMD_STORE_NAME (ENGINE_CMD_BASE + 12)
# define CAPI_CMD_STORE_FLAGS (ENGINE_CMD_BASE + 13)
static const ENGINE_CMD_DEFN capi_cmd_defns[] = {
{CAPI_CMD_LIST_CERTS,
"list_certs",
"List all certificates in store",
ENGINE_CMD_FLAG_NO_INPUT},
{CAPI_CMD_LOOKUP_CERT,
"lookup_cert",
"Lookup and output certificates",
ENGINE_CMD_FLAG_STRING},
{CAPI_CMD_DEBUG_LEVEL,
"debug_level",
"debug level (1=errors, 2=trace)",
ENGINE_CMD_FLAG_NUMERIC},
{CAPI_CMD_DEBUG_FILE,
"debug_file",
"debugging filename)",
ENGINE_CMD_FLAG_STRING},
{CAPI_CMD_KEYTYPE,
"key_type",
"Key type: 1=AT_KEYEXCHANGE (default), 2=AT_SIGNATURE",
ENGINE_CMD_FLAG_NUMERIC},
{CAPI_CMD_LIST_CSPS,
"list_csps",
"List all CSPs",
ENGINE_CMD_FLAG_NO_INPUT},
{CAPI_CMD_SET_CSP_IDX,
"csp_idx",
"Set CSP by index",
ENGINE_CMD_FLAG_NUMERIC},
{CAPI_CMD_SET_CSP_NAME,
"csp_name",
"Set CSP name, (default CSP used if not specified)",
ENGINE_CMD_FLAG_STRING},
{CAPI_CMD_SET_CSP_TYPE,
"csp_type",
"Set CSP type, (default RSA_PROV_FULL)",
ENGINE_CMD_FLAG_NUMERIC},
{CAPI_CMD_LIST_CONTAINERS,
"list_containers",
"list container names",
ENGINE_CMD_FLAG_NO_INPUT},
{CAPI_CMD_LIST_OPTIONS,
"list_options",
"Set list options (1=summary,2=friendly name, 4=full printout, 8=PEM output, 16=XXX, "
"32=private key info)",
ENGINE_CMD_FLAG_NUMERIC},
{CAPI_CMD_LOOKUP_METHOD,
"lookup_method",
"Set key lookup method (1=substring, 2=friendlyname, 3=container name)",
ENGINE_CMD_FLAG_NUMERIC},
{CAPI_CMD_STORE_NAME,
"store_name",
"certificate store name, default \"MY\"",
ENGINE_CMD_FLAG_STRING},
{CAPI_CMD_STORE_FLAGS,
"store_flags",
"Certificate store flags: 1 = system store",
ENGINE_CMD_FLAG_NUMERIC},
{0, NULL, NULL, 0}
};
static int capi_idx = -1;
static int rsa_capi_idx = -1;
static int dsa_capi_idx = -1;
static int cert_capi_idx = -1;
static int capi_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
{
int ret = 1;
CAPI_CTX *ctx;
BIO *out;
LPSTR tmpstr;
if (capi_idx == -1) {
CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_ENGINE_NOT_INITIALIZED);
return 0;
}
ctx = ENGINE_get_ex_data(e, capi_idx);
out = BIO_new_fp(stdout, BIO_NOCLOSE);
if (out == NULL) {
CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_FILE_OPEN_ERROR);
return 0;
}
switch (cmd) {
case CAPI_CMD_LIST_CSPS:
ret = capi_list_providers(ctx, out);
break;
case CAPI_CMD_LIST_CERTS:
ret = capi_list_certs(ctx, out, NULL);
break;
case CAPI_CMD_LOOKUP_CERT:
ret = capi_list_certs(ctx, out, p);
break;
case CAPI_CMD_LIST_CONTAINERS:
ret = capi_list_containers(ctx, out);
break;
case CAPI_CMD_STORE_NAME:
tmpstr = OPENSSL_strdup(p);
if (tmpstr != NULL) {
OPENSSL_free(ctx->storename);
ctx->storename = tmpstr;
CAPI_trace(ctx, "Setting store name to %s\n", p);
} else {
CAPIerr(CAPI_F_CAPI_CTRL, ERR_R_MALLOC_FAILURE);
ret = 0;
}
break;
case CAPI_CMD_STORE_FLAGS:
if (i & 1) {
ctx->store_flags |= CERT_SYSTEM_STORE_LOCAL_MACHINE;
ctx->store_flags &= ~CERT_SYSTEM_STORE_CURRENT_USER;
} else {
ctx->store_flags |= CERT_SYSTEM_STORE_CURRENT_USER;
ctx->store_flags &= ~CERT_SYSTEM_STORE_LOCAL_MACHINE;
}
CAPI_trace(ctx, "Setting flags to %d\n", i);
break;
case CAPI_CMD_DEBUG_LEVEL:
ctx->debug_level = (int)i;
CAPI_trace(ctx, "Setting debug level to %d\n", ctx->debug_level);
break;
case CAPI_CMD_DEBUG_FILE:
tmpstr = OPENSSL_strdup(p);
if (tmpstr != NULL) {
ctx->debug_file = tmpstr;
CAPI_trace(ctx, "Setting debug file to %s\n", ctx->debug_file);
} else {
CAPIerr(CAPI_F_CAPI_CTRL, ERR_R_MALLOC_FAILURE);
ret = 0;
}
break;
case CAPI_CMD_KEYTYPE:
ctx->keytype = i;
CAPI_trace(ctx, "Setting key type to %d\n", ctx->keytype);
break;
case CAPI_CMD_SET_CSP_IDX:
ret = capi_ctx_set_provname_idx(ctx, i);
break;
case CAPI_CMD_LIST_OPTIONS:
ctx->dump_flags = i;
break;
case CAPI_CMD_LOOKUP_METHOD:
if (i < 1 || i > 3) {
CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_INVALID_LOOKUP_METHOD);
BIO_free(out);
return 0;
}
ctx->lookup_method = i;
break;
case CAPI_CMD_SET_CSP_NAME:
ret = capi_ctx_set_provname(ctx, p, ctx->csptype, 1);
break;
case CAPI_CMD_SET_CSP_TYPE:
ctx->csptype = i;
break;
default:
CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_UNKNOWN_COMMAND);
ret = 0;
}
BIO_free(out);
return ret;
}
static RSA_METHOD *capi_rsa_method = NULL;
# ifndef OPENSSL_NO_DSA
static DSA_METHOD *capi_dsa_method = NULL;
# endif
static int use_aes_csp = 0;
static const WCHAR rsa_aes_cspname[] =
L"Microsoft Enhanced RSA and AES Cryptographic Provider";
static const WCHAR rsa_enh_cspname[] =
L"Microsoft Enhanced Cryptographic Provider v1.0";
static int capi_init(ENGINE *e)
{
CAPI_CTX *ctx;
const RSA_METHOD *ossl_rsa_meth;
# ifndef OPENSSL_NO_DSA
const DSA_METHOD *ossl_dsa_meth;
# endif
HCRYPTPROV hprov;
if (capi_idx < 0) {
capi_idx = ENGINE_get_ex_new_index(0, NULL, NULL, NULL, 0);
if (capi_idx < 0)
goto memerr;
cert_capi_idx = X509_get_ex_new_index(0, NULL, NULL, NULL, 0);
/* Setup RSA_METHOD */
rsa_capi_idx = RSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
ossl_rsa_meth = RSA_PKCS1_OpenSSL();
if ( !RSA_meth_set_pub_enc(capi_rsa_method,
RSA_meth_get_pub_enc(ossl_rsa_meth))
|| !RSA_meth_set_pub_dec(capi_rsa_method,
RSA_meth_get_pub_dec(ossl_rsa_meth))
|| !RSA_meth_set_priv_enc(capi_rsa_method, capi_rsa_priv_enc)
|| !RSA_meth_set_priv_dec(capi_rsa_method, capi_rsa_priv_dec)
|| !RSA_meth_set_mod_exp(capi_rsa_method,
RSA_meth_get_mod_exp(ossl_rsa_meth))
|| !RSA_meth_set_bn_mod_exp(capi_rsa_method,
RSA_meth_get_bn_mod_exp(ossl_rsa_meth))
|| !RSA_meth_set_finish(capi_rsa_method, capi_rsa_free)
|| !RSA_meth_set_sign(capi_rsa_method, capi_rsa_sign)) {
goto memerr;
}
# ifndef OPENSSL_NO_DSA
/* Setup DSA Method */
dsa_capi_idx = DSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
ossl_dsa_meth = DSA_OpenSSL();
if ( !DSA_meth_set_sign(capi_dsa_method, capi_dsa_do_sign)
|| !DSA_meth_set_verify(capi_dsa_method,
DSA_meth_get_verify(ossl_dsa_meth))
|| !DSA_meth_set_finish(capi_dsa_method, capi_dsa_free)
|| !DSA_meth_set_mod_exp(capi_dsa_method,
DSA_meth_get_mod_exp(ossl_dsa_meth))
|| !DSA_meth_set_bn_mod_exp(capi_dsa_method,
DSA_meth_get_bn_mod_exp(ossl_dsa_meth))) {
goto memerr;
}
# endif
}
ctx = capi_ctx_new();
if (ctx == NULL)
goto memerr;
ENGINE_set_ex_data(e, capi_idx, ctx);
# ifdef OPENSSL_CAPIENG_DIALOG
{
HMODULE cryptui = LoadLibrary(TEXT("CRYPTUI.DLL"));
HMODULE kernel = GetModuleHandle(TEXT("KERNEL32.DLL"));
if (cryptui)
ctx->certselectdlg =
(CERTDLG) GetProcAddress(cryptui,
"CryptUIDlgSelectCertificateFromStore");
if (kernel)
ctx->getconswindow =
(GETCONSWIN) GetProcAddress(kernel, "GetConsoleWindow");
if (cryptui && !OPENSSL_isservice())
ctx->client_cert_select = cert_select_dialog;
}
# endif
/* See if there is RSA+AES CSP */
if (CryptAcquireContextW(&hprov, NULL, rsa_aes_cspname, PROV_RSA_AES,
CRYPT_VERIFYCONTEXT)) {
use_aes_csp = 1;
CryptReleaseContext(hprov, 0);
}
return 1;
memerr:
CAPIerr(CAPI_F_CAPI_INIT, ERR_R_MALLOC_FAILURE);
return 0;
return 1;
}
static int capi_destroy(ENGINE *e)
{
RSA_meth_free(capi_rsa_method);
capi_rsa_method = NULL;
# ifndef OPENSSL_NO_DSA
DSA_meth_free(capi_dsa_method);
capi_dsa_method = NULL;
# endif
ERR_unload_CAPI_strings();
return 1;
}
static int capi_finish(ENGINE *e)
{
CAPI_CTX *ctx;
ctx = ENGINE_get_ex_data(e, capi_idx);
capi_ctx_free(ctx);
ENGINE_set_ex_data(e, capi_idx, NULL);
return 1;
}
/*
* CryptoAPI key application data. This contains a handle to the private key
* container (for sign operations) and a handle to the key (for decrypt
* operations).
*/
struct CAPI_KEY_st {
/* Associated certificate context (if any) */
PCCERT_CONTEXT pcert;
HCRYPTPROV hprov;
HCRYPTKEY key;
DWORD keyspec;
};
static int bind_capi(ENGINE *e)
{
capi_rsa_method = RSA_meth_new("CryptoAPI RSA method", 0);
if (capi_rsa_method == NULL)
return 0;
# ifndef OPENSSL_NO_DSA
capi_dsa_method = DSA_meth_new("CryptoAPI DSA method", 0);
if (capi_dsa_method == NULL)
goto memerr;
# endif
if (!ENGINE_set_id(e, engine_capi_id)
|| !ENGINE_set_name(e, engine_capi_name)
|| !ENGINE_set_flags(e, ENGINE_FLAGS_NO_REGISTER_ALL)
|| !ENGINE_set_init_function(e, capi_init)
|| !ENGINE_set_finish_function(e, capi_finish)
|| !ENGINE_set_destroy_function(e, capi_destroy)
|| !ENGINE_set_RSA(e, capi_rsa_method)
# ifndef OPENSSL_NO_DSA
|| !ENGINE_set_DSA(e, capi_dsa_method)
# endif
|| !ENGINE_set_load_privkey_function(e, capi_load_privkey)
|| !ENGINE_set_load_ssl_client_cert_function(e,
capi_load_ssl_client_cert)
|| !ENGINE_set_cmd_defns(e, capi_cmd_defns)
|| !ENGINE_set_ctrl_function(e, capi_ctrl))
goto memerr;
ERR_load_CAPI_strings();
return 1;
memerr:
RSA_meth_free(capi_rsa_method);
capi_rsa_method = NULL;
# ifndef OPENSSL_NO_DSA
DSA_meth_free(capi_dsa_method);
capi_dsa_method = NULL;
# endif
return 0;
}
# ifndef OPENSSL_NO_DYNAMIC_ENGINE
static int bind_helper(ENGINE *e, const char *id)
{
if (id && (strcmp(id, engine_capi_id) != 0))
return 0;
if (!bind_capi(e))
return 0;
return 1;
}
IMPLEMENT_DYNAMIC_CHECK_FN()
IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
# else
static ENGINE *engine_capi(void)
{
ENGINE *ret = ENGINE_new();
if (ret == NULL)
return NULL;
if (!bind_capi(ret)) {
ENGINE_free(ret);
return NULL;
}
return ret;
}
void engine_load_capi_int(void)
{
/* Copied from eng_[openssl|dyn].c */
ENGINE *toadd = engine_capi();
if (!toadd)
return;
ERR_set_mark();
ENGINE_add(toadd);
/*
* If the "add" worked, it gets a structural reference. So either way, we
* release our just-created reference.
*/
ENGINE_free(toadd);
/*
* If the "add" didn't work, it was probably a conflict because it was
* already added (eg. someone calling ENGINE_load_blah then calling
* ENGINE_load_builtin_engines() perhaps).
*/
ERR_pop_to_mark();
}
# endif
static int lend_tobn(BIGNUM *bn, unsigned char *bin, int binlen)
{
int i;
/*
* Reverse buffer in place: since this is a keyblob structure that will
* be freed up after conversion anyway it doesn't matter if we change
* it.
*/
for (i = 0; i < binlen / 2; i++) {
unsigned char c;
c = bin[i];
bin[i] = bin[binlen - i - 1];
bin[binlen - i - 1] = c;
}
if (!BN_bin2bn(bin, binlen, bn))
return 0;
return 1;
}
/* Given a CAPI_KEY get an EVP_PKEY structure */
static EVP_PKEY *capi_get_pkey(ENGINE *eng, CAPI_KEY *key)
{
unsigned char *pubkey = NULL;
DWORD len;
BLOBHEADER *bh;
RSA *rkey = NULL;
DSA *dkey = NULL;
EVP_PKEY *ret = NULL;
if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, NULL, &len)) {
CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_LENGTH_ERROR);
capi_addlasterror();
return NULL;
}
pubkey = OPENSSL_malloc(len);
if (pubkey == NULL)
goto memerr;
if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, pubkey, &len)) {
CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_ERROR);
capi_addlasterror();
goto err;
}
bh = (BLOBHEADER *) pubkey;
if (bh->bType != PUBLICKEYBLOB) {
CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_PUBLIC_KEY_BLOB);
goto err;
}
if (bh->aiKeyAlg == CALG_RSA_SIGN || bh->aiKeyAlg == CALG_RSA_KEYX) {
RSAPUBKEY *rp;
DWORD rsa_modlen;
BIGNUM *e = NULL, *n = NULL;
unsigned char *rsa_modulus;
rp = (RSAPUBKEY *) (bh + 1);
if (rp->magic != 0x31415352) {
char magstr[10];
BIO_snprintf(magstr, 10, "%lx", rp->magic);
CAPIerr(CAPI_F_CAPI_GET_PKEY,
CAPI_R_INVALID_RSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
ERR_add_error_data(2, "magic=0x", magstr);
goto err;
}
rsa_modulus = (unsigned char *)(rp + 1);
rkey = RSA_new_method(eng);
if (!rkey)
goto memerr;
e = BN_new();
n = BN_new();
if (e == NULL || n == NULL) {
BN_free(e);
BN_free(n);
goto memerr;
}
RSA_set0_key(rkey, n, e, NULL);
if (!BN_set_word(e, rp->pubexp))
goto memerr;
rsa_modlen = rp->bitlen / 8;
if (!lend_tobn(n, rsa_modulus, rsa_modlen))
goto memerr;
RSA_set_ex_data(rkey, rsa_capi_idx, key);
if ((ret = EVP_PKEY_new()) == NULL)
goto memerr;
EVP_PKEY_assign_RSA(ret, rkey);
rkey = NULL;
# ifndef OPENSSL_NO_DSA
} else if (bh->aiKeyAlg == CALG_DSS_SIGN) {
DSSPUBKEY *dp;
DWORD dsa_plen;
unsigned char *btmp;
BIGNUM *p, *q, *g, *pub_key;
dp = (DSSPUBKEY *) (bh + 1);
if (dp->magic != 0x31535344) {
char magstr[10];
BIO_snprintf(magstr, 10, "%lx", dp->magic);
CAPIerr(CAPI_F_CAPI_GET_PKEY,
CAPI_R_INVALID_DSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
ERR_add_error_data(2, "magic=0x", magstr);
goto err;
}
dsa_plen = dp->bitlen / 8;
btmp = (unsigned char *)(dp + 1);
dkey = DSA_new_method(eng);
if (!dkey)
goto memerr;
p = BN_new();
q = BN_new();
g = BN_new();
pub_key = BN_new();
if (p == NULL || q == NULL || g == NULL || pub_key == NULL) {
BN_free(p);
BN_free(q);
BN_free(g);
BN_free(pub_key);
goto memerr;
}
DSA_set0_pqg(dkey, p, q, g);
DSA_set0_key(dkey, pub_key, NULL);
if (!lend_tobn(p, btmp, dsa_plen))
goto memerr;
btmp += dsa_plen;
if (!lend_tobn(q, btmp, 20))
goto memerr;
btmp += 20;
if (!lend_tobn(g, btmp, dsa_plen))
goto memerr;
btmp += dsa_plen;
if (!lend_tobn(pub_key, btmp, dsa_plen))
goto memerr;
btmp += dsa_plen;
DSA_set_ex_data(dkey, dsa_capi_idx, key);
if ((ret = EVP_PKEY_new()) == NULL)
goto memerr;
EVP_PKEY_assign_DSA(ret, dkey);
dkey = NULL;
# endif
} else {
char algstr[10];
BIO_snprintf(algstr, 10, "%ux", bh->aiKeyAlg);
CAPIerr(CAPI_F_CAPI_GET_PKEY,
CAPI_R_UNSUPPORTED_PUBLIC_KEY_ALGORITHM);
ERR_add_error_data(2, "aiKeyAlg=0x", algstr);
goto err;
}
err:
OPENSSL_free(pubkey);
if (!ret) {
RSA_free(rkey);
# ifndef OPENSSL_NO_DSA
DSA_free(dkey);
# endif
}
return ret;
memerr:
CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_MALLOC_FAILURE);
goto err;
}
static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
UI_METHOD *ui_method, void *callback_data)
{
CAPI_CTX *ctx;
CAPI_KEY *key;
EVP_PKEY *ret;
ctx = ENGINE_get_ex_data(eng, capi_idx);
if (!ctx) {
CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_CANT_FIND_CAPI_CONTEXT);
return NULL;
}
key = capi_find_key(ctx, key_id);
if (!key)
return NULL;
ret = capi_get_pkey(eng, key);
if (!ret)
capi_free_key(key);
return ret;
}
/* CryptoAPI RSA operations */
int capi_rsa_priv_enc(int flen, const unsigned char *from,
unsigned char *to, RSA *rsa, int padding)
{
CAPIerr(CAPI_F_CAPI_RSA_PRIV_ENC, CAPI_R_FUNCTION_NOT_SUPPORTED);
return -1;
}
int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
unsigned char *sigret, unsigned int *siglen, const RSA *rsa)
{
ALG_ID alg;
HCRYPTHASH hash;
DWORD slen;
unsigned int i;
int ret = -1;
CAPI_KEY *capi_key;
CAPI_CTX *ctx;
ctx = ENGINE_get_ex_data(RSA_get0_engine(rsa), capi_idx);
CAPI_trace(ctx, "Called CAPI_rsa_sign()\n");
capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
if (!capi_key) {
CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_GET_KEY);
return -1;
}
/* Convert the signature type to a CryptoAPI algorithm ID */
switch (dtype) {
case NID_sha256:
alg = CALG_SHA_256;
break;
case NID_sha384:
alg = CALG_SHA_384;
break;
case NID_sha512:
alg = CALG_SHA_512;
break;
case NID_sha1:
alg = CALG_SHA1;
break;
case NID_md5:
alg = CALG_MD5;
break;
case NID_md5_sha1:
alg = CALG_SSL3_SHAMD5;
break;
default:
{
char algstr[10];
BIO_snprintf(algstr, 10, "%x", dtype);
CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_UNSUPPORTED_ALGORITHM_NID);
ERR_add_error_data(2, "NID=0x", algstr);
return -1;
}
}
/* Create the hash object */
if (!CryptCreateHash(capi_key->hprov, alg, 0, 0, &hash)) {
CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
capi_addlasterror();
return -1;
}
/* Set the hash value to the value passed */
if (!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)m, 0)) {
CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
capi_addlasterror();
goto err;
}
/* Finally sign it */
slen = RSA_size(rsa);
if (!CryptSignHash(hash, capi_key->keyspec, NULL, 0, sigret, &slen)) {
CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_ERROR_SIGNING_HASH);
capi_addlasterror();
goto err;
} else {
ret = 1;
/* Inplace byte reversal of signature */
for (i = 0; i < slen / 2; i++) {
unsigned char c;
c = sigret[i];
sigret[i] = sigret[slen - i - 1];
sigret[slen - i - 1] = c;
}
*siglen = slen;
}
/* Now cleanup */
err:
CryptDestroyHash(hash);
return ret;
}
int capi_rsa_priv_dec(int flen, const unsigned char *from,
unsigned char *to, RSA *rsa, int padding)
{
int i;
unsigned char *tmpbuf;
CAPI_KEY *capi_key;
CAPI_CTX *ctx;
DWORD flags = 0;
DWORD dlen;
if (flen <= 0)
return flen;
ctx = ENGINE_get_ex_data(RSA_get0_engine(rsa), capi_idx);
CAPI_trace(ctx, "Called capi_rsa_priv_dec()\n");
capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
if (!capi_key) {
CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_CANT_GET_KEY);
return -1;
}
switch (padding) {
case RSA_PKCS1_PADDING:
/* Nothing to do */
break;
#ifdef CRYPT_DECRYPT_RSA_NO_PADDING_CHECK
case RSA_NO_PADDING:
flags = CRYPT_DECRYPT_RSA_NO_PADDING_CHECK;
break;
#endif
default:
{
char errstr[10];
BIO_snprintf(errstr, 10, "%d", padding);
CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_UNSUPPORTED_PADDING);
ERR_add_error_data(2, "padding=", errstr);
return -1;
}
}
/* Create temp reverse order version of input */
if ((tmpbuf = OPENSSL_malloc(flen)) == NULL) {
CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, ERR_R_MALLOC_FAILURE);
return -1;
}
for (i = 0; i < flen; i++)
tmpbuf[flen - i - 1] = from[i];
/* Finally decrypt it */
dlen = flen;
if (!CryptDecrypt(capi_key->key, 0, TRUE, flags, tmpbuf, &dlen)) {
CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_DECRYPT_ERROR);
capi_addlasterror();
OPENSSL_cleanse(tmpbuf, dlen);
OPENSSL_free(tmpbuf);
return -1;
} else {
memcpy(to, tmpbuf, (flen = (int)dlen));
}
OPENSSL_cleanse(tmpbuf, flen);
OPENSSL_free(tmpbuf);
return flen;
}
static int capi_rsa_free(RSA *rsa)
{
CAPI_KEY *capi_key;
capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
capi_free_key(capi_key);
RSA_set_ex_data(rsa, rsa_capi_idx, 0);
return 1;
}