1 /* engines/e_capi.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project.
4 */
5 /* ====================================================================
6 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 */
53
54
55 #include <stdio.h>
56 #include <string.h>
57 #include <openssl/crypto.h>
58 #include <openssl/buffer.h>
59 #include <openssl/rsa.h>
60 #include <openssl/bn.h>
61
62 #ifdef OPENSSL_SYS_WIN32
63 #ifndef OPENSSL_NO_CAPIENG
64
65
66 #include <windows.h>
67
68 #ifndef _WIN32_WINNT
69 #define _WIN32_WINNT 0x0400
70 #endif
71
72 #include <wincrypt.h>
73
74 #undef X509_EXTENSIONS
75 #undef X509_CERT_PAIR
76
77 /* Definitions which may be missing from earlier version of headers */
78 #ifndef CERT_STORE_OPEN_EXISTING_FLAG
79 #define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
80 #endif
81
82 #ifndef CERT_STORE_CREATE_NEW_FLAG
83 #define CERT_STORE_CREATE_NEW_FLAG 0x00002000
84 #endif
85
86 #include <openssl/engine.h>
87 #include <openssl/pem.h>
88 #include <openssl/x509v3.h>
89
90 #include "e_capi_err.h"
91 #include "e_capi_err.c"
92
93
94 static const char *engine_capi_id = "capi";
95 static const char *engine_capi_name = "CryptoAPI ENGINE";
96
97 typedef struct CAPI_CTX_st CAPI_CTX;
98 typedef struct CAPI_KEY_st CAPI_KEY;
99
100 static void capi_addlasterror(void);
101 static void capi_adderror(DWORD err);
102
103 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...);
104
105 static int capi_list_providers(CAPI_CTX *ctx, BIO *out);
106 static int capi_list_containers(CAPI_CTX *ctx, BIO *out);
107 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *storename);
108 void capi_free_key(CAPI_KEY *key);
109
110 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore);
111
112 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id);
113
114 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
115 UI_METHOD *ui_method, void *callback_data);
116 static int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
117 unsigned char *sigret, unsigned int *siglen, const RSA *rsa);
118 static int capi_rsa_priv_enc(int flen, const unsigned char *from,
119 unsigned char *to, RSA *rsa, int padding);
120 static int capi_rsa_priv_dec(int flen, const unsigned char *from,
121 unsigned char *to, RSA *rsa, int padding);
122 static int capi_rsa_free(RSA *rsa);
123
124 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
125 DSA *dsa);
126 static int capi_dsa_free(DSA *dsa);
127
128 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
129 STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey,
130 STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data);
131
132 static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
133 #ifdef OPENSSL_CAPIENG_DIALOG
134 static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
135 #endif
136
137 typedef PCCERT_CONTEXT (WINAPI *CERTDLG)(HCERTSTORE, HWND, LPCWSTR,
138 LPCWSTR, DWORD, DWORD,
139 void *);
140 typedef HWND (WINAPI *GETCONSWIN)(void);
141
142 /* This structure contains CAPI ENGINE specific data:
143 * it contains various global options and affects how
144 * other functions behave.
145 */
146
147 #define CAPI_DBG_TRACE 2
148 #define CAPI_DBG_ERROR 1
149
150 struct CAPI_CTX_st {
151 int debug_level;
152 char *debug_file;
153 /* Parameters to use for container lookup */
154 DWORD keytype;
155 LPTSTR cspname;
156 DWORD csptype;
157 /* Certificate store name to use */
158 LPTSTR storename;
159 LPTSTR ssl_client_store;
160 /* System store flags */
161 DWORD store_flags;
162
163 /* Lookup string meanings in load_private_key */
164 /* Substring of subject: uses "storename" */
165 #define CAPI_LU_SUBSTR 0
166 /* Friendly name: uses storename */
167 #define CAPI_LU_FNAME 1
168 /* Container name: uses cspname, keytype */
169 #define CAPI_LU_CONTNAME 2
170 int lookup_method;
171 /* Info to dump with dumpcerts option */
172 /* Issuer and serial name strings */
173 #define CAPI_DMP_SUMMARY 0x1
174 /* Friendly name */
175 #define CAPI_DMP_FNAME 0x2
176 /* Full X509_print dump */
177 #define CAPI_DMP_FULL 0x4
178 /* Dump PEM format certificate */
179 #define CAPI_DMP_PEM 0x8
180 /* Dump pseudo key (if possible) */
181 #define CAPI_DMP_PSKEY 0x10
182 /* Dump key info (if possible) */
183 #define CAPI_DMP_PKEYINFO 0x20
184
185 DWORD dump_flags;
186 int (*client_cert_select)(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs);
187
188 CERTDLG certselectdlg;
189 GETCONSWIN getconswindow;
190 };
191
192
193 static CAPI_CTX *capi_ctx_new();
194 static void capi_ctx_free(CAPI_CTX *ctx);
195 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check);
196 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx);
197
198 #define CAPI_CMD_LIST_CERTS ENGINE_CMD_BASE
199 #define CAPI_CMD_LOOKUP_CERT (ENGINE_CMD_BASE + 1)
200 #define CAPI_CMD_DEBUG_LEVEL (ENGINE_CMD_BASE + 2)
201 #define CAPI_CMD_DEBUG_FILE (ENGINE_CMD_BASE + 3)
202 #define CAPI_CMD_KEYTYPE (ENGINE_CMD_BASE + 4)
203 #define CAPI_CMD_LIST_CSPS (ENGINE_CMD_BASE + 5)
204 #define CAPI_CMD_SET_CSP_IDX (ENGINE_CMD_BASE + 6)
205 #define CAPI_CMD_SET_CSP_NAME (ENGINE_CMD_BASE + 7)
206 #define CAPI_CMD_SET_CSP_TYPE (ENGINE_CMD_BASE + 8)
207 #define CAPI_CMD_LIST_CONTAINERS (ENGINE_CMD_BASE + 9)
208 #define CAPI_CMD_LIST_OPTIONS (ENGINE_CMD_BASE + 10)
209 #define CAPI_CMD_LOOKUP_METHOD (ENGINE_CMD_BASE + 11)
210 #define CAPI_CMD_STORE_NAME (ENGINE_CMD_BASE + 12)
211 #define CAPI_CMD_STORE_FLAGS (ENGINE_CMD_BASE + 13)
212
213 static const ENGINE_CMD_DEFN capi_cmd_defns[] = {
214 {CAPI_CMD_LIST_CERTS,
215 "list_certs",
216 "List all certificates in store",
217 ENGINE_CMD_FLAG_NO_INPUT},
218 {CAPI_CMD_LOOKUP_CERT,
219 "lookup_cert",
220 "Lookup and output certificates",
221 ENGINE_CMD_FLAG_STRING},
222 {CAPI_CMD_DEBUG_LEVEL,
223 "debug_level",
224 "debug level (1=errors, 2=trace)",
225 ENGINE_CMD_FLAG_NUMERIC},
226 {CAPI_CMD_DEBUG_FILE,
227 "debug_file",
228 "debugging filename)",
229 ENGINE_CMD_FLAG_STRING},
230 {CAPI_CMD_KEYTYPE,
231 "key_type",
232 "Key type: 1=AT_KEYEXCHANGE (default), 2=AT_SIGNATURE",
233 ENGINE_CMD_FLAG_NUMERIC},
234 {CAPI_CMD_LIST_CSPS,
235 "list_csps",
236 "List all CSPs",
237 ENGINE_CMD_FLAG_NO_INPUT},
238 {CAPI_CMD_SET_CSP_IDX,
239 "csp_idx",
240 "Set CSP by index",
241 ENGINE_CMD_FLAG_NUMERIC},
242 {CAPI_CMD_SET_CSP_NAME,
243 "csp_name",
244 "Set CSP name, (default CSP used if not specified)",
245 ENGINE_CMD_FLAG_STRING},
246 {CAPI_CMD_SET_CSP_TYPE,
247 "csp_type",
248 "Set CSP type, (default RSA_PROV_FULL)",
249 ENGINE_CMD_FLAG_NUMERIC},
250 {CAPI_CMD_LIST_CONTAINERS,
251 "list_containers",
252 "list container names",
253 ENGINE_CMD_FLAG_NO_INPUT},
254 {CAPI_CMD_LIST_OPTIONS,
255 "list_options",
256 "Set list options (1=summary,2=friendly name, 4=full printout, 8=PEM output, 16=XXX, "
257 "32=private key info)",
258 ENGINE_CMD_FLAG_NUMERIC},
259 {CAPI_CMD_LOOKUP_METHOD,
260 "lookup_method",
261 "Set key lookup method (1=substring, 2=friendlyname, 3=container name)",
262 ENGINE_CMD_FLAG_NUMERIC},
263 {CAPI_CMD_STORE_NAME,
264 "store_name",
265 "certificate store name, default \"MY\"",
266 ENGINE_CMD_FLAG_STRING},
267 {CAPI_CMD_STORE_FLAGS,
268 "store_flags",
269 "Certificate store flags: 1 = system store",
270 ENGINE_CMD_FLAG_NUMERIC},
271
272 {0, NULL, NULL, 0}
273 };
274
275 static int capi_idx = -1;
276 static int rsa_capi_idx = -1;
277 static int dsa_capi_idx = -1;
278 static int cert_capi_idx = -1;
279
capi_ctrl(ENGINE * e,int cmd,long i,void * p,void (* f)(void))280 static int capi_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))
281 {
282 int ret = 1;
283 CAPI_CTX *ctx;
284 BIO *out;
285 if (capi_idx == -1)
286 {
287 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_ENGINE_NOT_INITIALIZED);
288 return 0;
289 }
290 ctx = ENGINE_get_ex_data(e, capi_idx);
291 out = BIO_new_fp(stdout, BIO_NOCLOSE);
292 switch (cmd)
293 {
294 case CAPI_CMD_LIST_CSPS:
295 ret = capi_list_providers(ctx, out);
296 break;
297
298 case CAPI_CMD_LIST_CERTS:
299 ret = capi_list_certs(ctx, out, NULL);
300 break;
301
302 case CAPI_CMD_LOOKUP_CERT:
303 ret = capi_list_certs(ctx, out, p);
304 break;
305
306 case CAPI_CMD_LIST_CONTAINERS:
307 ret = capi_list_containers(ctx, out);
308 break;
309
310 case CAPI_CMD_STORE_NAME:
311 if (ctx->storename)
312 OPENSSL_free(ctx->storename);
313 ctx->storename = BUF_strdup(p);
314 CAPI_trace(ctx, "Setting store name to %s\n", p);
315 break;
316
317 case CAPI_CMD_STORE_FLAGS:
318 if (i & 1)
319 {
320 ctx->store_flags |= CERT_SYSTEM_STORE_LOCAL_MACHINE;
321 ctx->store_flags &= ~CERT_SYSTEM_STORE_CURRENT_USER;
322 }
323 else
324 {
325 ctx->store_flags |= CERT_SYSTEM_STORE_CURRENT_USER;
326 ctx->store_flags &= ~CERT_SYSTEM_STORE_LOCAL_MACHINE;
327 }
328 CAPI_trace(ctx, "Setting flags to %d\n", i);
329 break;
330
331 case CAPI_CMD_DEBUG_LEVEL:
332 ctx->debug_level = (int)i;
333 CAPI_trace(ctx, "Setting debug level to %d\n", ctx->debug_level);
334 break;
335
336 case CAPI_CMD_DEBUG_FILE:
337 ctx->debug_file = BUF_strdup(p);
338 CAPI_trace(ctx, "Setting debug file to %s\n", ctx->debug_file);
339 break;
340
341 case CAPI_CMD_KEYTYPE:
342 ctx->keytype = i;
343 CAPI_trace(ctx, "Setting key type to %d\n", ctx->keytype);
344 break;
345
346 case CAPI_CMD_SET_CSP_IDX:
347 ret = capi_ctx_set_provname_idx(ctx, i);
348 break;
349
350 case CAPI_CMD_LIST_OPTIONS:
351 ctx->dump_flags = i;
352 break;
353
354 case CAPI_CMD_LOOKUP_METHOD:
355 if (i < 1 || i > 3)
356 {
357 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_INVALID_LOOKUP_METHOD);
358 return 0;
359 }
360 ctx->lookup_method = i;
361 break;
362
363 case CAPI_CMD_SET_CSP_NAME:
364 ret = capi_ctx_set_provname(ctx, p, ctx->csptype, 1);
365 break;
366
367 case CAPI_CMD_SET_CSP_TYPE:
368 ctx->csptype = i;
369 break;
370
371 default:
372 CAPIerr(CAPI_F_CAPI_CTRL, CAPI_R_UNKNOWN_COMMAND);
373 ret = 0;
374 }
375
376 BIO_free(out);
377 return ret;
378
379 }
380
381 static RSA_METHOD capi_rsa_method =
382 {
383 "CryptoAPI RSA method",
384 0, /* pub_enc */
385 0, /* pub_dec */
386 capi_rsa_priv_enc, /* priv_enc */
387 capi_rsa_priv_dec, /* priv_dec */
388 0, /* rsa_mod_exp */
389 0, /* bn_mod_exp */
390 0, /* init */
391 capi_rsa_free, /* finish */
392 RSA_FLAG_SIGN_VER, /* flags */
393 NULL, /* app_data */
394 capi_rsa_sign, /* rsa_sign */
395 0 /* rsa_verify */
396 };
397
398 static DSA_METHOD capi_dsa_method =
399 {
400 "CryptoAPI DSA method",
401 capi_dsa_do_sign, /* dsa_do_sign */
402 0, /* dsa_sign_setup */
403 0, /* dsa_do_verify */
404 0, /* dsa_mod_exp */
405 0, /* bn_mod_exp */
406 0, /* init */
407 capi_dsa_free, /* finish */
408 0, /* flags */
409 NULL, /* app_data */
410 0, /* dsa_paramgen */
411 0 /* dsa_keygen */
412 };
413
capi_init(ENGINE * e)414 static int capi_init(ENGINE *e)
415 {
416 CAPI_CTX *ctx;
417 const RSA_METHOD *ossl_rsa_meth;
418 const DSA_METHOD *ossl_dsa_meth;
419 capi_idx = ENGINE_get_ex_new_index(0, NULL, NULL, NULL, 0);
420 cert_capi_idx = X509_get_ex_new_index(0, NULL, NULL, NULL, 0);
421
422 ctx = capi_ctx_new();
423 if (!ctx || (capi_idx < 0))
424 goto memerr;
425
426 ENGINE_set_ex_data(e, capi_idx, ctx);
427 /* Setup RSA_METHOD */
428 rsa_capi_idx = RSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
429 ossl_rsa_meth = RSA_PKCS1_SSLeay();
430 capi_rsa_method.rsa_pub_enc = ossl_rsa_meth->rsa_pub_enc;
431 capi_rsa_method.rsa_pub_dec = ossl_rsa_meth->rsa_pub_dec;
432 capi_rsa_method.rsa_mod_exp = ossl_rsa_meth->rsa_mod_exp;
433 capi_rsa_method.bn_mod_exp = ossl_rsa_meth->bn_mod_exp;
434
435 /* Setup DSA Method */
436 dsa_capi_idx = DSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
437 ossl_dsa_meth = DSA_OpenSSL();
438 capi_dsa_method.dsa_do_verify = ossl_dsa_meth->dsa_do_verify;
439 capi_dsa_method.dsa_mod_exp = ossl_dsa_meth->dsa_mod_exp;
440 capi_dsa_method.bn_mod_exp = ossl_dsa_meth->bn_mod_exp;
441
442 #ifdef OPENSSL_CAPIENG_DIALOG
443 {
444 HMODULE cryptui = LoadLibrary(TEXT("CRYPTUI.DLL"));
445 HMODULE kernel = LoadLibrary(TEXT("KERNEL32.DLL"));
446 if (cryptui)
447 ctx->certselectdlg = (CERTDLG)GetProcAddress(cryptui, "CryptUIDlgSelectCertificateFromStore");
448 if (kernel)
449 ctx->getconswindow = (GETCONSWIN)GetProcAddress(kernel, "GetConsoleWindow");
450 if (cryptui && !OPENSSL_isservice())
451 ctx->client_cert_select = cert_select_dialog;
452 }
453 #endif
454
455
456 return 1;
457
458 memerr:
459 CAPIerr(CAPI_F_CAPI_INIT, ERR_R_MALLOC_FAILURE);
460 return 0;
461
462 return 1;
463 }
464
capi_destroy(ENGINE * e)465 static int capi_destroy(ENGINE *e)
466 {
467 ERR_unload_CAPI_strings();
468 return 1;
469 }
470
capi_finish(ENGINE * e)471 static int capi_finish(ENGINE *e)
472 {
473 CAPI_CTX *ctx;
474 ctx = ENGINE_get_ex_data(e, capi_idx);
475 capi_ctx_free(ctx);
476 ENGINE_set_ex_data(e, capi_idx, NULL);
477 return 1;
478 }
479
480
481 /* CryptoAPI key application data. This contains
482 * a handle to the private key container (for sign operations)
483 * and a handle to the key (for decrypt operations).
484 */
485
486 struct CAPI_KEY_st
487 {
488 /* Associated certificate context (if any) */
489 PCCERT_CONTEXT pcert;
490 HCRYPTPROV hprov;
491 HCRYPTKEY key;
492 DWORD keyspec;
493 };
494
bind_capi(ENGINE * e)495 static int bind_capi(ENGINE *e)
496 {
497 if (!ENGINE_set_id(e, engine_capi_id)
498 || !ENGINE_set_name(e, engine_capi_name)
499 || !ENGINE_set_init_function(e, capi_init)
500 || !ENGINE_set_finish_function(e, capi_finish)
501 || !ENGINE_set_destroy_function(e, capi_destroy)
502 || !ENGINE_set_RSA(e, &capi_rsa_method)
503 || !ENGINE_set_DSA(e, &capi_dsa_method)
504 || !ENGINE_set_load_privkey_function(e, capi_load_privkey)
505 || !ENGINE_set_load_ssl_client_cert_function(e,
506 capi_load_ssl_client_cert)
507 || !ENGINE_set_cmd_defns(e, capi_cmd_defns)
508 || !ENGINE_set_ctrl_function(e, capi_ctrl))
509 return 0;
510 ERR_load_CAPI_strings();
511
512 return 1;
513
514 }
515
516 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
bind_helper(ENGINE * e,const char * id)517 static int bind_helper(ENGINE *e, const char *id)
518 {
519 if(id && (strcmp(id, engine_capi_id) != 0))
520 return 0;
521 if(!bind_capi(e))
522 return 0;
523 return 1;
524 }
525 IMPLEMENT_DYNAMIC_CHECK_FN()
IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)526 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
527 #else
528 static ENGINE *engine_capi(void)
529 {
530 ENGINE *ret = ENGINE_new();
531 if(!ret)
532 return NULL;
533 if(!bind_capi(ret))
534 {
535 ENGINE_free(ret);
536 return NULL;
537 }
538 return ret;
539 }
540
541 void ENGINE_load_capi(void)
542 {
543 /* Copied from eng_[openssl|dyn].c */
544 ENGINE *toadd = engine_capi();
545 if(!toadd) return;
546 ENGINE_add(toadd);
547 ENGINE_free(toadd);
548 ERR_clear_error();
549 }
550 #endif
551
552
553 static int lend_tobn(BIGNUM *bn, unsigned char *bin, int binlen)
554 {
555 int i;
556 /* Reverse buffer in place: since this is a keyblob structure
557 * that will be freed up after conversion anyway it doesn't
558 * matter if we change it.
559 */
560 for(i = 0; i < binlen / 2; i++)
561 {
562 unsigned char c;
563 c = bin[i];
564 bin[i] = bin[binlen - i - 1];
565 bin[binlen - i - 1] = c;
566 }
567
568 if (!BN_bin2bn(bin, binlen, bn))
569 return 0;
570 return 1;
571 }
572
573 /* Given a CAPI_KEY get an EVP_PKEY structure */
574
capi_get_pkey(ENGINE * eng,CAPI_KEY * key)575 static EVP_PKEY *capi_get_pkey(ENGINE *eng, CAPI_KEY *key)
576 {
577 unsigned char *pubkey = NULL;
578 DWORD len;
579 BLOBHEADER *bh;
580 RSA *rkey = NULL;
581 DSA *dkey = NULL;
582 EVP_PKEY *ret = NULL;
583 if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, NULL, &len))
584 {
585 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_LENGTH_ERROR);
586 capi_addlasterror();
587 return NULL;
588 }
589
590 pubkey = OPENSSL_malloc(len);
591
592 if (!pubkey)
593 goto memerr;
594
595 if (!CryptExportKey(key->key, 0, PUBLICKEYBLOB, 0, pubkey, &len))
596 {
597 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_PUBKEY_EXPORT_ERROR);
598 capi_addlasterror();
599 goto err;
600 }
601
602 bh = (BLOBHEADER *)pubkey;
603 if (bh->bType != PUBLICKEYBLOB)
604 {
605 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_PUBLIC_KEY_BLOB);
606 goto err;
607 }
608 if (bh->aiKeyAlg == CALG_RSA_SIGN || bh->aiKeyAlg == CALG_RSA_KEYX)
609 {
610 RSAPUBKEY *rp;
611 DWORD rsa_modlen;
612 unsigned char *rsa_modulus;
613 rp = (RSAPUBKEY *)(bh + 1);
614 if (rp->magic != 0x31415352)
615 {
616 char magstr[10];
617 BIO_snprintf(magstr, 10, "%lx", rp->magic);
618 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_RSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
619 ERR_add_error_data(2, "magic=0x", magstr);
620 goto err;
621 }
622 rsa_modulus = (unsigned char *)(rp + 1);
623 rkey = RSA_new_method(eng);
624 if (!rkey)
625 goto memerr;
626
627 rkey->e = BN_new();
628 rkey->n = BN_new();
629
630 if (!rkey->e || !rkey->n)
631 goto memerr;
632
633 if (!BN_set_word(rkey->e, rp->pubexp))
634 goto memerr;
635
636 rsa_modlen = rp->bitlen / 8;
637 if (!lend_tobn(rkey->n, rsa_modulus, rsa_modlen))
638 goto memerr;
639
640 RSA_set_ex_data(rkey, rsa_capi_idx, key);
641
642 if (!(ret = EVP_PKEY_new()))
643 goto memerr;
644
645 EVP_PKEY_assign_RSA(ret, rkey);
646 rkey = NULL;
647
648 }
649 else if (bh->aiKeyAlg == CALG_DSS_SIGN)
650 {
651 DSSPUBKEY *dp;
652 DWORD dsa_plen;
653 unsigned char *btmp;
654 dp = (DSSPUBKEY *)(bh + 1);
655 if (dp->magic != 0x31535344)
656 {
657 char magstr[10];
658 BIO_snprintf(magstr, 10, "%lx", dp->magic);
659 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_INVALID_DSA_PUBLIC_KEY_BLOB_MAGIC_NUMBER);
660 ERR_add_error_data(2, "magic=0x", magstr);
661 goto err;
662 }
663 dsa_plen = dp->bitlen / 8;
664 btmp = (unsigned char *)(dp + 1);
665 dkey = DSA_new_method(eng);
666 if (!dkey)
667 goto memerr;
668 dkey->p = BN_new();
669 dkey->q = BN_new();
670 dkey->g = BN_new();
671 dkey->pub_key = BN_new();
672 if (!dkey->p || !dkey->q || !dkey->g || !dkey->pub_key)
673 goto memerr;
674 if (!lend_tobn(dkey->p, btmp, dsa_plen))
675 goto memerr;
676 btmp += dsa_plen;
677 if (!lend_tobn(dkey->q, btmp, 20))
678 goto memerr;
679 btmp += 20;
680 if (!lend_tobn(dkey->g, btmp, dsa_plen))
681 goto memerr;
682 btmp += dsa_plen;
683 if (!lend_tobn(dkey->pub_key, btmp, dsa_plen))
684 goto memerr;
685 btmp += dsa_plen;
686
687 DSA_set_ex_data(dkey, dsa_capi_idx, key);
688
689 if (!(ret = EVP_PKEY_new()))
690 goto memerr;
691
692 EVP_PKEY_assign_DSA(ret, dkey);
693 dkey = NULL;
694 }
695 else
696 {
697 char algstr[10];
698 BIO_snprintf(algstr, 10, "%lx", bh->aiKeyAlg);
699 CAPIerr(CAPI_F_CAPI_GET_PKEY, CAPI_R_UNSUPPORTED_PUBLIC_KEY_ALGORITHM);
700 ERR_add_error_data(2, "aiKeyAlg=0x", algstr);
701 goto err;
702 }
703
704
705 err:
706 if (pubkey)
707 OPENSSL_free(pubkey);
708 if (!ret)
709 {
710 if (rkey)
711 RSA_free(rkey);
712 if (dkey)
713 DSA_free(dkey);
714 }
715
716 return ret;
717
718 memerr:
719 CAPIerr(CAPI_F_CAPI_GET_PKEY, ERR_R_MALLOC_FAILURE);
720 goto err;
721
722 }
723
capi_load_privkey(ENGINE * eng,const char * key_id,UI_METHOD * ui_method,void * callback_data)724 static EVP_PKEY *capi_load_privkey(ENGINE *eng, const char *key_id,
725 UI_METHOD *ui_method, void *callback_data)
726 {
727 CAPI_CTX *ctx;
728 CAPI_KEY *key;
729 EVP_PKEY *ret;
730 ctx = ENGINE_get_ex_data(eng, capi_idx);
731
732 if (!ctx)
733 {
734 CAPIerr(CAPI_F_CAPI_LOAD_PRIVKEY, CAPI_R_CANT_FIND_CAPI_CONTEXT);
735 return NULL;
736 }
737
738 key = capi_find_key(ctx, key_id);
739
740 if (!key)
741 return NULL;
742
743 ret = capi_get_pkey(eng, key);
744
745 if (!ret)
746 capi_free_key(key);
747 return ret;
748
749 }
750
751 /* CryptoAPI RSA operations */
752
capi_rsa_priv_enc(int flen,const unsigned char * from,unsigned char * to,RSA * rsa,int padding)753 int capi_rsa_priv_enc(int flen, const unsigned char *from,
754 unsigned char *to, RSA *rsa, int padding)
755 {
756 CAPIerr(CAPI_F_CAPI_RSA_PRIV_ENC, CAPI_R_FUNCTION_NOT_SUPPORTED);
757 return -1;
758 }
759
capi_rsa_sign(int dtype,const unsigned char * m,unsigned int m_len,unsigned char * sigret,unsigned int * siglen,const RSA * rsa)760 int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
761 unsigned char *sigret, unsigned int *siglen, const RSA *rsa)
762 {
763 ALG_ID alg;
764 HCRYPTHASH hash;
765 DWORD slen;
766 unsigned int i;
767 int ret = -1;
768 CAPI_KEY *capi_key;
769 CAPI_CTX *ctx;
770
771 ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
772
773 CAPI_trace(ctx, "Called CAPI_rsa_sign()\n");
774
775 capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
776 if (!capi_key)
777 {
778 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_GET_KEY);
779 return -1;
780 }
781 /* Convert the signature type to a CryptoAPI algorithm ID */
782 switch(dtype)
783 {
784 case NID_sha1:
785 alg = CALG_SHA1;
786 break;
787
788 case NID_md5:
789 alg = CALG_MD5;
790 break;
791
792 case NID_md5_sha1:
793 alg = CALG_SSL3_SHAMD5;
794 break;
795 default:
796 {
797 char algstr[10];
798 BIO_snprintf(algstr, 10, "%lx", dtype);
799 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_UNSUPPORTED_ALGORITHM_NID);
800 ERR_add_error_data(2, "NID=0x", algstr);
801 return -1;
802 }
803 }
804
805
806
807 /* Create the hash object */
808 if(!CryptCreateHash(capi_key->hprov, alg, 0, 0, &hash))
809 {
810 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
811 capi_addlasterror();
812 return -1;
813 }
814 /* Set the hash value to the value passed */
815
816 if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)m, 0))
817 {
818 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
819 capi_addlasterror();
820 goto err;
821 }
822
823
824 /* Finally sign it */
825 slen = RSA_size(rsa);
826 if(!CryptSignHash(hash, capi_key->keyspec, NULL, 0, sigret, &slen))
827 {
828 CAPIerr(CAPI_F_CAPI_RSA_SIGN, CAPI_R_ERROR_SIGNING_HASH);
829 capi_addlasterror();
830 goto err;
831 }
832 else
833 {
834 ret = 1;
835 /* Inplace byte reversal of signature */
836 for(i = 0; i < slen / 2; i++)
837 {
838 unsigned char c;
839 c = sigret[i];
840 sigret[i] = sigret[slen - i - 1];
841 sigret[slen - i - 1] = c;
842 }
843 *siglen = slen;
844 }
845
846 /* Now cleanup */
847
848 err:
849 CryptDestroyHash(hash);
850
851 return ret;
852 }
853
capi_rsa_priv_dec(int flen,const unsigned char * from,unsigned char * to,RSA * rsa,int padding)854 int capi_rsa_priv_dec(int flen, const unsigned char *from,
855 unsigned char *to, RSA *rsa, int padding)
856 {
857 int i;
858 unsigned char *tmpbuf;
859 CAPI_KEY *capi_key;
860 CAPI_CTX *ctx;
861 ctx = ENGINE_get_ex_data(rsa->engine, capi_idx);
862
863 CAPI_trace(ctx, "Called capi_rsa_priv_dec()\n");
864
865
866 capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
867 if (!capi_key)
868 {
869 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_CANT_GET_KEY);
870 return -1;
871 }
872
873 if(padding != RSA_PKCS1_PADDING)
874 {
875 char errstr[10];
876 BIO_snprintf(errstr, 10, "%d", padding);
877 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_UNSUPPORTED_PADDING);
878 ERR_add_error_data(2, "padding=", errstr);
879 return -1;
880 }
881
882 /* Create temp reverse order version of input */
883 if(!(tmpbuf = OPENSSL_malloc(flen)) )
884 {
885 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, ERR_R_MALLOC_FAILURE);
886 return -1;
887 }
888 for(i = 0; i < flen; i++)
889 tmpbuf[flen - i - 1] = from[i];
890
891 /* Finally decrypt it */
892 if(!CryptDecrypt(capi_key->key, 0, TRUE, 0, tmpbuf, &flen))
893 {
894 CAPIerr(CAPI_F_CAPI_RSA_PRIV_DEC, CAPI_R_DECRYPT_ERROR);
895 capi_addlasterror();
896 OPENSSL_free(tmpbuf);
897 return -1;
898 }
899 else memcpy(to, tmpbuf, flen);
900
901 OPENSSL_free(tmpbuf);
902
903 return flen;
904 }
905
capi_rsa_free(RSA * rsa)906 static int capi_rsa_free(RSA *rsa)
907 {
908 CAPI_KEY *capi_key;
909 capi_key = RSA_get_ex_data(rsa, rsa_capi_idx);
910 capi_free_key(capi_key);
911 RSA_set_ex_data(rsa, rsa_capi_idx, 0);
912 return 1;
913 }
914
915 /* CryptoAPI DSA operations */
916
capi_dsa_do_sign(const unsigned char * digest,int dlen,DSA * dsa)917 static DSA_SIG *capi_dsa_do_sign(const unsigned char *digest, int dlen,
918 DSA *dsa)
919 {
920 HCRYPTHASH hash;
921 DWORD slen;
922 DSA_SIG *ret = NULL;
923 CAPI_KEY *capi_key;
924 CAPI_CTX *ctx;
925 unsigned char csigbuf[40];
926
927 ctx = ENGINE_get_ex_data(dsa->engine, capi_idx);
928
929 CAPI_trace(ctx, "Called CAPI_dsa_do_sign()\n");
930
931 capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
932
933 if (!capi_key)
934 {
935 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_GET_KEY);
936 return NULL;
937 }
938
939 if (dlen != 20)
940 {
941 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_INVALID_DIGEST_LENGTH);
942 return NULL;
943 }
944
945 /* Create the hash object */
946 if(!CryptCreateHash(capi_key->hprov, CALG_SHA1, 0, 0, &hash))
947 {
948 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_CREATE_HASH_OBJECT);
949 capi_addlasterror();
950 return NULL;
951 }
952
953 /* Set the hash value to the value passed */
954 if(!CryptSetHashParam(hash, HP_HASHVAL, (unsigned char *)digest, 0))
955 {
956 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_CANT_SET_HASH_VALUE);
957 capi_addlasterror();
958 goto err;
959 }
960
961
962 /* Finally sign it */
963 slen = sizeof(csigbuf);
964 if(!CryptSignHash(hash, capi_key->keyspec, NULL, 0, csigbuf, &slen))
965 {
966 CAPIerr(CAPI_F_CAPI_DSA_DO_SIGN, CAPI_R_ERROR_SIGNING_HASH);
967 capi_addlasterror();
968 goto err;
969 }
970 else
971 {
972 ret = DSA_SIG_new();
973 if (!ret)
974 goto err;
975 ret->r = BN_new();
976 ret->s = BN_new();
977 if (!ret->r || !ret->s)
978 goto err;
979 if (!lend_tobn(ret->r, csigbuf, 20)
980 || !lend_tobn(ret->s, csigbuf + 20, 20))
981 {
982 DSA_SIG_free(ret);
983 ret = NULL;
984 goto err;
985 }
986 }
987
988 /* Now cleanup */
989
990 err:
991 OPENSSL_cleanse(csigbuf, 40);
992 CryptDestroyHash(hash);
993 return ret;
994 }
995
capi_dsa_free(DSA * dsa)996 static int capi_dsa_free(DSA *dsa)
997 {
998 CAPI_KEY *capi_key;
999 capi_key = DSA_get_ex_data(dsa, dsa_capi_idx);
1000 capi_free_key(capi_key);
1001 DSA_set_ex_data(dsa, dsa_capi_idx, 0);
1002 return 1;
1003 }
1004
capi_vtrace(CAPI_CTX * ctx,int level,char * format,va_list argptr)1005 static void capi_vtrace(CAPI_CTX *ctx, int level, char *format, va_list argptr)
1006 {
1007 BIO *out;
1008
1009 if (!ctx || (ctx->debug_level < level) || (!ctx->debug_file))
1010 return;
1011 out = BIO_new_file(ctx->debug_file, "a+");
1012 BIO_vprintf(out, format, argptr);
1013 BIO_free(out);
1014 }
1015
CAPI_trace(CAPI_CTX * ctx,char * format,...)1016 static void CAPI_trace(CAPI_CTX *ctx, char *format, ...)
1017 {
1018 va_list args;
1019 va_start(args, format);
1020 capi_vtrace(ctx, CAPI_DBG_TRACE, format, args);
1021 va_end(args);
1022 }
1023
capi_addlasterror(void)1024 static void capi_addlasterror(void)
1025 {
1026 capi_adderror(GetLastError());
1027 }
1028
capi_adderror(DWORD err)1029 static void capi_adderror(DWORD err)
1030 {
1031 char errstr[10];
1032 BIO_snprintf(errstr, 10, "%lX", err);
1033 ERR_add_error_data(2, "Error code= 0x", errstr);
1034 }
1035
wide_to_asc(LPWSTR wstr)1036 static char *wide_to_asc(LPWSTR wstr)
1037 {
1038 char *str;
1039 if (!wstr)
1040 return NULL;
1041 str = OPENSSL_malloc(wcslen(wstr) + 1);
1042 if (!str)
1043 {
1044 CAPIerr(CAPI_F_WIDE_TO_ASC, ERR_R_MALLOC_FAILURE);
1045 return NULL;
1046 }
1047 sprintf(str, "%S", wstr);
1048 return str;
1049 }
1050
capi_get_provname(CAPI_CTX * ctx,LPSTR * pname,DWORD * ptype,DWORD idx)1051 static int capi_get_provname(CAPI_CTX *ctx, LPSTR *pname, DWORD *ptype, DWORD idx)
1052 {
1053 LPSTR name;
1054 DWORD len, err;
1055 CAPI_trace(ctx, "capi_get_provname, index=%d\n", idx);
1056 if (!CryptEnumProviders(idx, NULL, 0, ptype, NULL, &len))
1057 {
1058 err = GetLastError();
1059 if (err == ERROR_NO_MORE_ITEMS)
1060 return 2;
1061 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1062 capi_adderror(err);
1063 return 0;
1064 }
1065 name = OPENSSL_malloc(len);
1066 if (!CryptEnumProviders(idx, NULL, 0, ptype, name, &len))
1067 {
1068 err = GetLastError();
1069 if (err == ERROR_NO_MORE_ITEMS)
1070 return 2;
1071 CAPIerr(CAPI_F_CAPI_GET_PROVNAME, CAPI_R_CRYPTENUMPROVIDERS_ERROR);
1072 capi_adderror(err);
1073 return 0;
1074 }
1075 *pname = name;
1076 CAPI_trace(ctx, "capi_get_provname, returned name=%s, type=%d\n", name, *ptype);
1077
1078 return 1;
1079 }
1080
capi_list_providers(CAPI_CTX * ctx,BIO * out)1081 static int capi_list_providers(CAPI_CTX *ctx, BIO *out)
1082 {
1083 DWORD idx, ptype;
1084 int ret;
1085 LPTSTR provname = NULL;
1086 CAPI_trace(ctx, "capi_list_providers\n");
1087 BIO_printf(out, "Available CSPs:\n");
1088 for(idx = 0; ; idx++)
1089 {
1090 ret = capi_get_provname(ctx, &provname, &ptype, idx);
1091 if (ret == 2)
1092 break;
1093 if (ret == 0)
1094 break;
1095 BIO_printf(out, "%d. %s, type %d\n", idx, provname, ptype);
1096 OPENSSL_free(provname);
1097 }
1098 return 1;
1099 }
1100
capi_list_containers(CAPI_CTX * ctx,BIO * out)1101 static int capi_list_containers(CAPI_CTX *ctx, BIO *out)
1102 {
1103 int ret = 1;
1104 HCRYPTPROV hprov;
1105 DWORD err, idx, flags, buflen = 0, clen;
1106 LPSTR cname;
1107 CAPI_trace(ctx, "Listing containers CSP=%s, type = %d\n", ctx->cspname, ctx->csptype);
1108 if (!CryptAcquireContext(&hprov, NULL, ctx->cspname, ctx->csptype, CRYPT_VERIFYCONTEXT))
1109 {
1110 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1111 capi_addlasterror();
1112 return 0;
1113 }
1114 if (!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, NULL, &buflen, CRYPT_FIRST))
1115 {
1116 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1117 capi_addlasterror();
1118 return 0;
1119 }
1120 CAPI_trace(ctx, "Got max container len %d\n", buflen);
1121 if (buflen == 0)
1122 buflen = 1024;
1123 cname = OPENSSL_malloc(buflen);
1124 if (!cname)
1125 {
1126 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, ERR_R_MALLOC_FAILURE);
1127 goto err;
1128 }
1129
1130 for (idx = 0;;idx++)
1131 {
1132 clen = buflen;
1133 cname[0] = 0;
1134
1135 if (idx == 0)
1136 flags = CRYPT_FIRST;
1137 else
1138 flags = 0;
1139 if(!CryptGetProvParam(hprov, PP_ENUMCONTAINERS, cname, &clen, flags))
1140 {
1141 err = GetLastError();
1142 if (err == ERROR_NO_MORE_ITEMS)
1143 goto done;
1144 CAPIerr(CAPI_F_CAPI_LIST_CONTAINERS, CAPI_R_ENUMCONTAINERS_ERROR);
1145 capi_adderror(err);
1146 goto err;
1147 }
1148 CAPI_trace(ctx, "Container name %s, len=%d, index=%d, flags=%d\n", cname, clen, idx, flags);
1149 if (!cname[0] && (clen == buflen))
1150 {
1151 CAPI_trace(ctx, "Enumerate bug: using workaround\n");
1152 goto done;
1153 }
1154 BIO_printf(out, "%d. %s\n", idx, cname);
1155 }
1156 err:
1157
1158 ret = 0;
1159
1160 done:
1161 if (cname)
1162 OPENSSL_free(cname);
1163 CryptReleaseContext(hprov, 0);
1164
1165 return ret;
1166 }
1167
capi_get_prov_info(CAPI_CTX * ctx,PCCERT_CONTEXT cert)1168 CRYPT_KEY_PROV_INFO *capi_get_prov_info(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1169 {
1170 DWORD len;
1171 CRYPT_KEY_PROV_INFO *pinfo;
1172
1173 if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, NULL, &len))
1174 return NULL;
1175 pinfo = OPENSSL_malloc(len);
1176 if (!pinfo)
1177 {
1178 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, ERR_R_MALLOC_FAILURE);
1179 return NULL;
1180 }
1181 if(!CertGetCertificateContextProperty(cert, CERT_KEY_PROV_INFO_PROP_ID, pinfo, &len))
1182 {
1183 CAPIerr(CAPI_F_CAPI_GET_PROV_INFO, CAPI_R_ERROR_GETTING_KEY_PROVIDER_INFO);
1184 capi_addlasterror();
1185 OPENSSL_free(pinfo);
1186 return NULL;
1187 }
1188 return pinfo;
1189 }
1190
capi_dump_prov_info(CAPI_CTX * ctx,BIO * out,CRYPT_KEY_PROV_INFO * pinfo)1191 static void capi_dump_prov_info(CAPI_CTX *ctx, BIO *out, CRYPT_KEY_PROV_INFO *pinfo)
1192 {
1193 char *provname = NULL, *contname = NULL;
1194 if (!pinfo)
1195 {
1196 BIO_printf(out, " No Private Key\n");
1197 return;
1198 }
1199 provname = wide_to_asc(pinfo->pwszProvName);
1200 contname = wide_to_asc(pinfo->pwszContainerName);
1201 if (!provname || !contname)
1202 goto err;
1203
1204 BIO_printf(out, " Private Key Info:\n");
1205 BIO_printf(out, " Provider Name: %s, Provider Type %d\n", provname, pinfo->dwProvType);
1206 BIO_printf(out, " Container Name: %s, Key Type %d\n", contname, pinfo->dwKeySpec);
1207 err:
1208 if (provname)
1209 OPENSSL_free(provname);
1210 if (contname)
1211 OPENSSL_free(contname);
1212 }
1213
capi_cert_get_fname(CAPI_CTX * ctx,PCCERT_CONTEXT cert)1214 char * capi_cert_get_fname(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1215 {
1216 LPWSTR wfname;
1217 DWORD dlen;
1218
1219 CAPI_trace(ctx, "capi_cert_get_fname\n");
1220 if (!CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, NULL, &dlen))
1221 return NULL;
1222 wfname = OPENSSL_malloc(dlen);
1223 if (CertGetCertificateContextProperty(cert, CERT_FRIENDLY_NAME_PROP_ID, wfname, &dlen))
1224 {
1225 char *fname = wide_to_asc(wfname);
1226 OPENSSL_free(wfname);
1227 return fname;
1228 }
1229 CAPIerr(CAPI_F_CAPI_CERT_GET_FNAME, CAPI_R_ERROR_GETTING_FRIENDLY_NAME);
1230 capi_addlasterror();
1231
1232 OPENSSL_free(wfname);
1233 return NULL;
1234 }
1235
1236
capi_dump_cert(CAPI_CTX * ctx,BIO * out,PCCERT_CONTEXT cert)1237 void capi_dump_cert(CAPI_CTX *ctx, BIO *out, PCCERT_CONTEXT cert)
1238 {
1239 X509 *x;
1240 unsigned char *p;
1241 unsigned long flags = ctx->dump_flags;
1242 if (flags & CAPI_DMP_FNAME)
1243 {
1244 char *fname;
1245 fname = capi_cert_get_fname(ctx, cert);
1246 if (fname)
1247 {
1248 BIO_printf(out, " Friendly Name \"%s\"\n", fname);
1249 OPENSSL_free(fname);
1250 }
1251 else
1252 BIO_printf(out, " <No Friendly Name>\n");
1253 }
1254
1255 p = cert->pbCertEncoded;
1256 x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1257 if (!x)
1258 BIO_printf(out, " <Can't parse certificate>\n");
1259 if (flags & CAPI_DMP_SUMMARY)
1260 {
1261 BIO_printf(out, " Subject: ");
1262 X509_NAME_print_ex(out, X509_get_subject_name(x), 0, XN_FLAG_ONELINE);
1263 BIO_printf(out, "\n Issuer: ");
1264 X509_NAME_print_ex(out, X509_get_issuer_name(x), 0, XN_FLAG_ONELINE);
1265 BIO_printf(out, "\n");
1266 }
1267 if (flags & CAPI_DMP_FULL)
1268 X509_print_ex(out, x, XN_FLAG_ONELINE,0);
1269
1270 if (flags & CAPI_DMP_PKEYINFO)
1271 {
1272 CRYPT_KEY_PROV_INFO *pinfo;
1273 pinfo = capi_get_prov_info(ctx, cert);
1274 capi_dump_prov_info(ctx, out, pinfo);
1275 if (pinfo)
1276 OPENSSL_free(pinfo);
1277 }
1278
1279 if (flags & CAPI_DMP_PEM)
1280 PEM_write_bio_X509(out, x);
1281 X509_free(x);
1282 }
1283
capi_open_store(CAPI_CTX * ctx,char * storename)1284 HCERTSTORE capi_open_store(CAPI_CTX *ctx, char *storename)
1285 {
1286 HCERTSTORE hstore;
1287
1288 if (!storename)
1289 storename = ctx->storename;
1290 if (!storename)
1291 storename = "MY";
1292 CAPI_trace(ctx, "Opening certificate store %s\n", storename);
1293
1294 hstore = CertOpenStore(CERT_STORE_PROV_SYSTEM_A, 0, 0,
1295 ctx->store_flags, storename);
1296 if (!hstore)
1297 {
1298 CAPIerr(CAPI_F_CAPI_OPEN_STORE, CAPI_R_ERROR_OPENING_STORE);
1299 capi_addlasterror();
1300 }
1301 return hstore;
1302 }
1303
capi_list_certs(CAPI_CTX * ctx,BIO * out,char * id)1304 int capi_list_certs(CAPI_CTX *ctx, BIO *out, char *id)
1305 {
1306 char *storename;
1307 int idx;
1308 int ret = 1;
1309 HCERTSTORE hstore;
1310 PCCERT_CONTEXT cert = NULL;
1311
1312 storename = ctx->storename;
1313 if (!storename)
1314 storename = "MY";
1315 CAPI_trace(ctx, "Listing certs for store %s\n", storename);
1316
1317 hstore = capi_open_store(ctx, storename);
1318 if (!hstore)
1319 return 0;
1320 if (id)
1321 {
1322 cert = capi_find_cert(ctx, id, hstore);
1323 if (!cert)
1324 {
1325 ret = 0;
1326 goto err;
1327 }
1328 capi_dump_cert(ctx, out, cert);
1329 CertFreeCertificateContext(cert);
1330 }
1331 else
1332 {
1333 for(idx = 0;;idx++)
1334 {
1335 LPWSTR fname = NULL;
1336 cert = CertEnumCertificatesInStore(hstore, cert);
1337 if (!cert)
1338 break;
1339 BIO_printf(out, "Certificate %d\n", idx);
1340 capi_dump_cert(ctx, out, cert);
1341 }
1342 }
1343 err:
1344 CertCloseStore(hstore, 0);
1345 return ret;
1346 }
1347
capi_find_cert(CAPI_CTX * ctx,const char * id,HCERTSTORE hstore)1348 static PCCERT_CONTEXT capi_find_cert(CAPI_CTX *ctx, const char *id, HCERTSTORE hstore)
1349 {
1350 PCCERT_CONTEXT cert = NULL;
1351 char *fname = NULL;
1352 int match;
1353 switch(ctx->lookup_method)
1354 {
1355 case CAPI_LU_SUBSTR:
1356 return CertFindCertificateInStore(hstore,
1357 X509_ASN_ENCODING, 0,
1358 CERT_FIND_SUBJECT_STR_A, id, NULL);
1359 case CAPI_LU_FNAME:
1360 for(;;)
1361 {
1362 cert = CertEnumCertificatesInStore(hstore, cert);
1363 if (!cert)
1364 return NULL;
1365 fname = capi_cert_get_fname(ctx, cert);
1366 if (fname)
1367 {
1368 if (strcmp(fname, id))
1369 match = 0;
1370 else
1371 match = 1;
1372 OPENSSL_free(fname);
1373 if (match)
1374 return cert;
1375 }
1376 }
1377 default:
1378 return NULL;
1379 }
1380 }
1381
capi_get_key(CAPI_CTX * ctx,const char * contname,char * provname,DWORD ptype,DWORD keyspec)1382 static CAPI_KEY *capi_get_key(CAPI_CTX *ctx, const char *contname, char *provname, DWORD ptype, DWORD keyspec)
1383 {
1384 CAPI_KEY *key;
1385 key = OPENSSL_malloc(sizeof(CAPI_KEY));
1386 CAPI_trace(ctx, "capi_get_key, contname=%s, provname=%s, type=%d\n",
1387 contname, provname, ptype);
1388 if (!CryptAcquireContext(&key->hprov, contname, provname, ptype, 0))
1389 {
1390 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1391 capi_addlasterror();
1392 goto err;
1393 }
1394 if (!CryptGetUserKey(key->hprov, keyspec, &key->key))
1395 {
1396 CAPIerr(CAPI_F_CAPI_GET_KEY, CAPI_R_GETUSERKEY_ERROR);
1397 capi_addlasterror();
1398 CryptReleaseContext(key->hprov, 0);
1399 goto err;
1400 }
1401 key->keyspec = keyspec;
1402 key->pcert = NULL;
1403 return key;
1404
1405 err:
1406 OPENSSL_free(key);
1407 return NULL;
1408 }
1409
capi_get_cert_key(CAPI_CTX * ctx,PCCERT_CONTEXT cert)1410 static CAPI_KEY *capi_get_cert_key(CAPI_CTX *ctx, PCCERT_CONTEXT cert)
1411 {
1412 CAPI_KEY *key = NULL;
1413 CRYPT_KEY_PROV_INFO *pinfo = NULL;
1414 char *provname = NULL, *contname = NULL;
1415 pinfo = capi_get_prov_info(ctx, cert);
1416 if (!pinfo)
1417 goto err;
1418 provname = wide_to_asc(pinfo->pwszProvName);
1419 contname = wide_to_asc(pinfo->pwszContainerName);
1420 if (!provname || !contname)
1421 goto err;
1422 key = capi_get_key(ctx, contname, provname,
1423 pinfo->dwProvType, pinfo->dwKeySpec);
1424
1425 err:
1426 if (pinfo)
1427 OPENSSL_free(pinfo);
1428 if (provname)
1429 OPENSSL_free(provname);
1430 if (contname)
1431 OPENSSL_free(contname);
1432 return key;
1433 }
1434
capi_find_key(CAPI_CTX * ctx,const char * id)1435 CAPI_KEY *capi_find_key(CAPI_CTX *ctx, const char *id)
1436 {
1437 PCCERT_CONTEXT cert;
1438 HCERTSTORE hstore;
1439 CAPI_KEY *key = NULL;
1440 switch (ctx->lookup_method)
1441 {
1442 case CAPI_LU_SUBSTR:
1443 case CAPI_LU_FNAME:
1444 hstore = capi_open_store(ctx, NULL);
1445 if (!hstore)
1446 return NULL;
1447 cert = capi_find_cert(ctx, id, hstore);
1448 if (cert)
1449 {
1450 key = capi_get_cert_key(ctx, cert);
1451 CertFreeCertificateContext(cert);
1452 }
1453 CertCloseStore(hstore, 0);
1454 break;
1455
1456 case CAPI_LU_CONTNAME:
1457 key = capi_get_key(ctx, id, ctx->cspname, ctx->csptype,
1458 ctx->keytype);
1459 break;
1460 }
1461
1462 return key;
1463 }
1464
capi_free_key(CAPI_KEY * key)1465 void capi_free_key(CAPI_KEY *key)
1466 {
1467 if (!key)
1468 return;
1469 CryptDestroyKey(key->key);
1470 CryptReleaseContext(key->hprov, 0);
1471 if (key->pcert)
1472 CertFreeCertificateContext(key->pcert);
1473 OPENSSL_free(key);
1474 }
1475
1476
1477 /* Initialize a CAPI_CTX structure */
1478
capi_ctx_new()1479 static CAPI_CTX *capi_ctx_new()
1480 {
1481 CAPI_CTX *ctx;
1482 ctx = OPENSSL_malloc(sizeof(CAPI_CTX));
1483 if (!ctx)
1484 {
1485 CAPIerr(CAPI_F_CAPI_CTX_NEW, ERR_R_MALLOC_FAILURE);
1486 return NULL;
1487 }
1488 ctx->cspname = NULL;
1489 ctx->csptype = PROV_RSA_FULL;
1490 ctx->dump_flags = CAPI_DMP_SUMMARY|CAPI_DMP_FNAME;
1491 ctx->keytype = AT_KEYEXCHANGE;
1492 ctx->storename = NULL;
1493 ctx->ssl_client_store = NULL;
1494 ctx->store_flags = CERT_STORE_OPEN_EXISTING_FLAG |
1495 CERT_STORE_READONLY_FLAG |
1496 CERT_SYSTEM_STORE_CURRENT_USER;
1497 ctx->lookup_method = CAPI_LU_SUBSTR;
1498 ctx->debug_level = 0;
1499 ctx->debug_file = NULL;
1500 ctx->client_cert_select = cert_select_simple;
1501 return ctx;
1502 }
1503
capi_ctx_free(CAPI_CTX * ctx)1504 static void capi_ctx_free(CAPI_CTX *ctx)
1505 {
1506 CAPI_trace(ctx, "Calling capi_ctx_free with %lx\n", ctx);
1507 if (!ctx)
1508 return;
1509 if (ctx->cspname)
1510 OPENSSL_free(ctx->cspname);
1511 if (ctx->debug_file)
1512 OPENSSL_free(ctx->debug_file);
1513 if (ctx->storename)
1514 OPENSSL_free(ctx->storename);
1515 if (ctx->ssl_client_store)
1516 OPENSSL_free(ctx->ssl_client_store);
1517 OPENSSL_free(ctx);
1518 }
1519
capi_ctx_set_provname(CAPI_CTX * ctx,LPSTR pname,DWORD type,int check)1520 static int capi_ctx_set_provname(CAPI_CTX *ctx, LPSTR pname, DWORD type, int check)
1521 {
1522 CAPI_trace(ctx, "capi_ctx_set_provname, name=%s, type=%d\n", pname, type);
1523 if (check)
1524 {
1525 HCRYPTPROV hprov;
1526 if (!CryptAcquireContext(&hprov, NULL, pname, type,
1527 CRYPT_VERIFYCONTEXT))
1528 {
1529 CAPIerr(CAPI_F_CAPI_CTX_SET_PROVNAME, CAPI_R_CRYPTACQUIRECONTEXT_ERROR);
1530 capi_addlasterror();
1531 return 0;
1532 }
1533 CryptReleaseContext(hprov, 0);
1534 }
1535 ctx->cspname = BUF_strdup(pname);
1536 ctx->csptype = type;
1537 return 1;
1538 }
1539
capi_ctx_set_provname_idx(CAPI_CTX * ctx,int idx)1540 static int capi_ctx_set_provname_idx(CAPI_CTX *ctx, int idx)
1541 {
1542 LPSTR pname;
1543 DWORD type;
1544 if (capi_get_provname(ctx, &pname, &type, idx) != 1)
1545 return 0;
1546 return capi_ctx_set_provname(ctx, pname, type, 0);
1547 }
1548
cert_issuer_match(STACK_OF (X509_NAME)* ca_dn,X509 * x)1549 static int cert_issuer_match(STACK_OF(X509_NAME) *ca_dn, X509 *x)
1550 {
1551 int i;
1552 X509_NAME *nm;
1553 /* Special case: empty list: match anything */
1554 if (sk_X509_NAME_num(ca_dn) <= 0)
1555 return 1;
1556 for (i = 0; i < sk_X509_NAME_num(ca_dn); i++)
1557 {
1558 nm = sk_X509_NAME_value(ca_dn, i);
1559 if (!X509_NAME_cmp(nm, X509_get_issuer_name(x)))
1560 return 1;
1561 }
1562 return 0;
1563 }
1564
1565
1566
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)1567 static int capi_load_ssl_client_cert(ENGINE *e, SSL *ssl,
1568 STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey,
1569 STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data)
1570 {
1571 STACK_OF(X509) *certs = NULL;
1572 X509 *x;
1573 char *storename;
1574 const char *p;
1575 int i, client_cert_idx;
1576 HCERTSTORE hstore;
1577 PCCERT_CONTEXT cert = NULL, excert = NULL;
1578 CAPI_CTX *ctx;
1579 CAPI_KEY *key;
1580 ctx = ENGINE_get_ex_data(e, capi_idx);
1581
1582 *pcert = NULL;
1583 *pkey = NULL;
1584
1585 storename = ctx->ssl_client_store;
1586 if (!storename)
1587 storename = "MY";
1588
1589 hstore = capi_open_store(ctx, storename);
1590 if (!hstore)
1591 return 0;
1592 /* Enumerate all certificates collect any matches */
1593 for(i = 0;;i++)
1594 {
1595 cert = CertEnumCertificatesInStore(hstore, cert);
1596 if (!cert)
1597 break;
1598 p = cert->pbCertEncoded;
1599 x = d2i_X509(NULL, &p, cert->cbCertEncoded);
1600 if (!x)
1601 {
1602 CAPI_trace(ctx, "Can't Parse Certificate %d\n", i);
1603 continue;
1604 }
1605 if (cert_issuer_match(ca_dn, x)
1606 && X509_check_purpose(x, X509_PURPOSE_SSL_CLIENT, 0))
1607 {
1608 key = capi_get_cert_key(ctx, cert);
1609 if (!key)
1610 {
1611 X509_free(x);
1612 continue;
1613 }
1614 /* Match found: attach extra data to it so
1615 * we can retrieve the key later.
1616 */
1617 excert = CertDuplicateCertificateContext(cert);
1618 key->pcert = excert;
1619 X509_set_ex_data(x, cert_capi_idx, key);
1620
1621 if (!certs)
1622 certs = sk_X509_new_null();
1623
1624 sk_X509_push(certs, x);
1625 }
1626 else
1627 X509_free(x);
1628
1629 }
1630
1631 if (cert)
1632 CertFreeCertificateContext(cert);
1633 if (hstore)
1634 CertCloseStore(hstore, 0);
1635
1636 if (!certs)
1637 return 0;
1638
1639
1640 /* Select the appropriate certificate */
1641
1642 client_cert_idx = ctx->client_cert_select(e, ssl, certs);
1643
1644 /* Set the selected certificate and free the rest */
1645
1646 for(i = 0; i < sk_X509_num(certs); i++)
1647 {
1648 x = sk_X509_value(certs, i);
1649 if (i == client_cert_idx)
1650 *pcert = x;
1651 else
1652 {
1653 key = X509_get_ex_data(x, cert_capi_idx);
1654 capi_free_key(key);
1655 X509_free(x);
1656 }
1657 }
1658
1659 sk_X509_free(certs);
1660
1661 if (!*pcert)
1662 return 0;
1663
1664 /* Setup key for selected certificate */
1665
1666 key = X509_get_ex_data(*pcert, cert_capi_idx);
1667 *pkey = capi_get_pkey(e, key);
1668 X509_set_ex_data(*pcert, cert_capi_idx, NULL);
1669
1670 return 1;
1671
1672 }
1673
1674
1675 /* Simple client cert selection function: always select first */
1676
cert_select_simple(ENGINE * e,SSL * ssl,STACK_OF (X509)* certs)1677 static int cert_select_simple(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1678 {
1679 return 0;
1680 }
1681
1682 #ifdef OPENSSL_CAPIENG_DIALOG
1683
1684 /* More complex cert selection function, using standard function
1685 * CryptUIDlgSelectCertificateFromStore() to produce a dialog box.
1686 */
1687
1688 /* Definitions which are in cryptuiapi.h but this is not present in older
1689 * versions of headers.
1690 */
1691
1692 #ifndef CRYPTUI_SELECT_LOCATION_COLUMN
1693 #define CRYPTUI_SELECT_LOCATION_COLUMN 0x000000010
1694 #define CRYPTUI_SELECT_INTENDEDUSE_COLUMN 0x000000004
1695 #endif
1696
1697 #define dlg_title L"OpenSSL Application SSL Client Certificate Selection"
1698 #define dlg_prompt L"Select a certificate to use for authentication"
1699 #define dlg_columns CRYPTUI_SELECT_LOCATION_COLUMN \
1700 |CRYPTUI_SELECT_INTENDEDUSE_COLUMN
1701
cert_select_dialog(ENGINE * e,SSL * ssl,STACK_OF (X509)* certs)1702 static int cert_select_dialog(ENGINE *e, SSL *ssl, STACK_OF(X509) *certs)
1703 {
1704 X509 *x;
1705 HCERTSTORE dstore;
1706 PCCERT_CONTEXT cert;
1707 CAPI_CTX *ctx;
1708 CAPI_KEY *key;
1709 HWND hwnd;
1710 int i, idx = -1;
1711 if (sk_X509_num(certs) == 1)
1712 return 0;
1713 ctx = ENGINE_get_ex_data(e, capi_idx);
1714 /* Create an in memory store of certificates */
1715 dstore = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
1716 CERT_STORE_CREATE_NEW_FLAG, NULL);
1717 if (!dstore)
1718 {
1719 CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_CREATING_STORE);
1720 capi_addlasterror();
1721 goto err;
1722 }
1723 /* Add all certificates to store */
1724 for(i = 0; i < sk_X509_num(certs); i++)
1725 {
1726 x = sk_X509_value(certs, i);
1727 key = X509_get_ex_data(x, cert_capi_idx);
1728
1729 if (!CertAddCertificateContextToStore(dstore, key->pcert,
1730 CERT_STORE_ADD_NEW, NULL))
1731 {
1732 CAPIerr(CAPI_F_CERT_SELECT_DIALOG, CAPI_R_ERROR_ADDING_CERT);
1733 capi_addlasterror();
1734 goto err;
1735 }
1736
1737 }
1738 hwnd = GetForegroundWindow();
1739 if (!hwnd)
1740 hwnd = GetActiveWindow();
1741 if (!hwnd && ctx->getconswindow)
1742 hwnd = ctx->getconswindow();
1743 /* Call dialog to select one */
1744 cert = ctx->certselectdlg(dstore, hwnd, dlg_title, dlg_prompt,
1745 dlg_columns, 0, NULL);
1746
1747 /* Find matching cert from list */
1748 if (cert)
1749 {
1750 for(i = 0; i < sk_X509_num(certs); i++)
1751 {
1752 x = sk_X509_value(certs, i);
1753 key = X509_get_ex_data(x, cert_capi_idx);
1754 if (CertCompareCertificate(
1755 X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
1756 cert->pCertInfo,
1757 key->pcert->pCertInfo))
1758 {
1759 idx = i;
1760 break;
1761 }
1762 }
1763 }
1764
1765 err:
1766 if (dstore)
1767 CertCloseStore(dstore, 0);
1768 return idx;
1769
1770 }
1771 #endif
1772
1773 #endif
1774 #else /* !WIN32 */
1775 #include <openssl/engine.h>
1776 #ifndef OPENSSL_NO_DYNAMIC_ENGINE
1777 OPENSSL_EXPORT
bind_engine(ENGINE * e,const char * id,const dynamic_fns * fns)1778 int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns) { return 0; }
1779 IMPLEMENT_DYNAMIC_CHECK_FN()
1780 #endif
1781 #endif
1782