diff options
Diffstat (limited to 'src/lib/libcrypto/pkcs7/pk7_doit.c')
-rw-r--r-- | src/lib/libcrypto/pkcs7/pk7_doit.c | 1299 |
1 files changed, 0 insertions, 1299 deletions
diff --git a/src/lib/libcrypto/pkcs7/pk7_doit.c b/src/lib/libcrypto/pkcs7/pk7_doit.c deleted file mode 100644 index 77fda3b82a..0000000000 --- a/src/lib/libcrypto/pkcs7/pk7_doit.c +++ /dev/null | |||
@@ -1,1299 +0,0 @@ | |||
1 | /* crypto/pkcs7/pk7_doit.c */ | ||
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | ||
3 | * All rights reserved. | ||
4 | * | ||
5 | * This package is an SSL implementation written | ||
6 | * by Eric Young (eay@cryptsoft.com). | ||
7 | * The implementation was written so as to conform with Netscapes SSL. | ||
8 | * | ||
9 | * This library is free for commercial and non-commercial use as long as | ||
10 | * the following conditions are aheared to. The following conditions | ||
11 | * apply to all code found in this distribution, be it the RC4, RSA, | ||
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | ||
13 | * included with this distribution is covered by the same copyright terms | ||
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | ||
15 | * | ||
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | ||
17 | * the code are not to be removed. | ||
18 | * If this package is used in a product, Eric Young should be given attribution | ||
19 | * as the author of the parts of the library used. | ||
20 | * This can be in the form of a textual message at program startup or | ||
21 | * in documentation (online or textual) provided with the package. | ||
22 | * | ||
23 | * Redistribution and use in source and binary forms, with or without | ||
24 | * modification, are permitted provided that the following conditions | ||
25 | * are met: | ||
26 | * 1. Redistributions of source code must retain the copyright | ||
27 | * notice, this list of conditions and the following disclaimer. | ||
28 | * 2. Redistributions in binary form must reproduce the above copyright | ||
29 | * notice, this list of conditions and the following disclaimer in the | ||
30 | * documentation and/or other materials provided with the distribution. | ||
31 | * 3. All advertising materials mentioning features or use of this software | ||
32 | * must display the following acknowledgement: | ||
33 | * "This product includes cryptographic software written by | ||
34 | * Eric Young (eay@cryptsoft.com)" | ||
35 | * The word 'cryptographic' can be left out if the rouines from the library | ||
36 | * being used are not cryptographic related :-). | ||
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | ||
38 | * the apps directory (application code) you must include an acknowledgement: | ||
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | ||
40 | * | ||
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | ||
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | ||
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
51 | * SUCH DAMAGE. | ||
52 | * | ||
53 | * The licence and distribution terms for any publically available version or | ||
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | ||
55 | * copied and put under another distribution licence | ||
56 | * [including the GNU Public Licence.] | ||
57 | */ | ||
58 | |||
59 | #include <stdio.h> | ||
60 | #include "cryptlib.h" | ||
61 | #include <openssl/rand.h> | ||
62 | #include <openssl/objects.h> | ||
63 | #include <openssl/x509.h> | ||
64 | #include <openssl/x509v3.h> | ||
65 | #include <openssl/err.h> | ||
66 | |||
67 | static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype, | ||
68 | void *value); | ||
69 | static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid); | ||
70 | |||
71 | static int PKCS7_type_is_other(PKCS7* p7) | ||
72 | { | ||
73 | int isOther=1; | ||
74 | |||
75 | int nid=OBJ_obj2nid(p7->type); | ||
76 | |||
77 | switch( nid ) | ||
78 | { | ||
79 | case NID_pkcs7_data: | ||
80 | case NID_pkcs7_signed: | ||
81 | case NID_pkcs7_enveloped: | ||
82 | case NID_pkcs7_signedAndEnveloped: | ||
83 | case NID_pkcs7_digest: | ||
84 | case NID_pkcs7_encrypted: | ||
85 | isOther=0; | ||
86 | break; | ||
87 | default: | ||
88 | isOther=1; | ||
89 | } | ||
90 | |||
91 | return isOther; | ||
92 | |||
93 | } | ||
94 | |||
95 | static ASN1_OCTET_STRING *PKCS7_get_octet_string(PKCS7 *p7) | ||
96 | { | ||
97 | if ( PKCS7_type_is_data(p7)) | ||
98 | return p7->d.data; | ||
99 | if ( PKCS7_type_is_other(p7) && p7->d.other | ||
100 | && (p7->d.other->type == V_ASN1_OCTET_STRING)) | ||
101 | return p7->d.other->value.octet_string; | ||
102 | return NULL; | ||
103 | } | ||
104 | |||
105 | static int PKCS7_bio_add_digest(BIO **pbio, X509_ALGOR *alg) | ||
106 | { | ||
107 | BIO *btmp; | ||
108 | const EVP_MD *md; | ||
109 | if ((btmp=BIO_new(BIO_f_md())) == NULL) | ||
110 | { | ||
111 | PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,ERR_R_BIO_LIB); | ||
112 | goto err; | ||
113 | } | ||
114 | |||
115 | md=EVP_get_digestbyobj(alg->algorithm); | ||
116 | if (md == NULL) | ||
117 | { | ||
118 | PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,PKCS7_R_UNKNOWN_DIGEST_TYPE); | ||
119 | goto err; | ||
120 | } | ||
121 | |||
122 | BIO_set_md(btmp,md); | ||
123 | if (*pbio == NULL) | ||
124 | *pbio=btmp; | ||
125 | else if (!BIO_push(*pbio,btmp)) | ||
126 | { | ||
127 | PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,ERR_R_BIO_LIB); | ||
128 | goto err; | ||
129 | } | ||
130 | btmp=NULL; | ||
131 | |||
132 | return 1; | ||
133 | |||
134 | err: | ||
135 | if (btmp) | ||
136 | BIO_free(btmp); | ||
137 | return 0; | ||
138 | |||
139 | } | ||
140 | |||
141 | static int pkcs7_encode_rinfo(PKCS7_RECIP_INFO *ri, | ||
142 | unsigned char *key, int keylen) | ||
143 | { | ||
144 | EVP_PKEY_CTX *pctx = NULL; | ||
145 | EVP_PKEY *pkey = NULL; | ||
146 | unsigned char *ek = NULL; | ||
147 | int ret = 0; | ||
148 | size_t eklen; | ||
149 | |||
150 | pkey = X509_get_pubkey(ri->cert); | ||
151 | |||
152 | if (!pkey) | ||
153 | return 0; | ||
154 | |||
155 | pctx = EVP_PKEY_CTX_new(pkey, NULL); | ||
156 | if (!pctx) | ||
157 | return 0; | ||
158 | |||
159 | if (EVP_PKEY_encrypt_init(pctx) <= 0) | ||
160 | goto err; | ||
161 | |||
162 | if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_ENCRYPT, | ||
163 | EVP_PKEY_CTRL_PKCS7_ENCRYPT, 0, ri) <= 0) | ||
164 | { | ||
165 | PKCS7err(PKCS7_F_PKCS7_ENCODE_RINFO, PKCS7_R_CTRL_ERROR); | ||
166 | goto err; | ||
167 | } | ||
168 | |||
169 | if (EVP_PKEY_encrypt(pctx, NULL, &eklen, key, keylen) <= 0) | ||
170 | goto err; | ||
171 | |||
172 | ek = OPENSSL_malloc(eklen); | ||
173 | |||
174 | if (ek == NULL) | ||
175 | { | ||
176 | PKCS7err(PKCS7_F_PKCS7_ENCODE_RINFO, ERR_R_MALLOC_FAILURE); | ||
177 | goto err; | ||
178 | } | ||
179 | |||
180 | if (EVP_PKEY_encrypt(pctx, ek, &eklen, key, keylen) <= 0) | ||
181 | goto err; | ||
182 | |||
183 | ASN1_STRING_set0(ri->enc_key, ek, eklen); | ||
184 | ek = NULL; | ||
185 | |||
186 | ret = 1; | ||
187 | |||
188 | err: | ||
189 | if (pkey) | ||
190 | EVP_PKEY_free(pkey); | ||
191 | if (pctx) | ||
192 | EVP_PKEY_CTX_free(pctx); | ||
193 | if (ek) | ||
194 | OPENSSL_free(ek); | ||
195 | return ret; | ||
196 | |||
197 | } | ||
198 | |||
199 | |||
200 | static int pkcs7_decrypt_rinfo(unsigned char **pek, int *peklen, | ||
201 | PKCS7_RECIP_INFO *ri, EVP_PKEY *pkey) | ||
202 | { | ||
203 | EVP_PKEY_CTX *pctx = NULL; | ||
204 | unsigned char *ek = NULL; | ||
205 | size_t eklen; | ||
206 | |||
207 | int ret = -1; | ||
208 | |||
209 | pctx = EVP_PKEY_CTX_new(pkey, NULL); | ||
210 | if (!pctx) | ||
211 | return -1; | ||
212 | |||
213 | if (EVP_PKEY_decrypt_init(pctx) <= 0) | ||
214 | goto err; | ||
215 | |||
216 | if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DECRYPT, | ||
217 | EVP_PKEY_CTRL_PKCS7_DECRYPT, 0, ri) <= 0) | ||
218 | { | ||
219 | PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, PKCS7_R_CTRL_ERROR); | ||
220 | goto err; | ||
221 | } | ||
222 | |||
223 | if (EVP_PKEY_decrypt(pctx, NULL, &eklen, | ||
224 | ri->enc_key->data, ri->enc_key->length) <= 0) | ||
225 | goto err; | ||
226 | |||
227 | ek = OPENSSL_malloc(eklen); | ||
228 | |||
229 | if (ek == NULL) | ||
230 | { | ||
231 | PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_MALLOC_FAILURE); | ||
232 | goto err; | ||
233 | } | ||
234 | |||
235 | if (EVP_PKEY_decrypt(pctx, ek, &eklen, | ||
236 | ri->enc_key->data, ri->enc_key->length) <= 0) | ||
237 | { | ||
238 | ret = 0; | ||
239 | PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_EVP_LIB); | ||
240 | goto err; | ||
241 | } | ||
242 | |||
243 | ret = 1; | ||
244 | |||
245 | if (*pek) | ||
246 | { | ||
247 | OPENSSL_cleanse(*pek, *peklen); | ||
248 | OPENSSL_free(*pek); | ||
249 | } | ||
250 | |||
251 | *pek = ek; | ||
252 | *peklen = eklen; | ||
253 | |||
254 | err: | ||
255 | if (pctx) | ||
256 | EVP_PKEY_CTX_free(pctx); | ||
257 | if (!ret && ek) | ||
258 | OPENSSL_free(ek); | ||
259 | |||
260 | return ret; | ||
261 | } | ||
262 | |||
263 | BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio) | ||
264 | { | ||
265 | int i; | ||
266 | BIO *out=NULL,*btmp=NULL; | ||
267 | X509_ALGOR *xa = NULL; | ||
268 | const EVP_CIPHER *evp_cipher=NULL; | ||
269 | STACK_OF(X509_ALGOR) *md_sk=NULL; | ||
270 | STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL; | ||
271 | X509_ALGOR *xalg=NULL; | ||
272 | PKCS7_RECIP_INFO *ri=NULL; | ||
273 | ASN1_OCTET_STRING *os=NULL; | ||
274 | |||
275 | i=OBJ_obj2nid(p7->type); | ||
276 | p7->state=PKCS7_S_HEADER; | ||
277 | |||
278 | switch (i) | ||
279 | { | ||
280 | case NID_pkcs7_signed: | ||
281 | md_sk=p7->d.sign->md_algs; | ||
282 | os = PKCS7_get_octet_string(p7->d.sign->contents); | ||
283 | break; | ||
284 | case NID_pkcs7_signedAndEnveloped: | ||
285 | rsk=p7->d.signed_and_enveloped->recipientinfo; | ||
286 | md_sk=p7->d.signed_and_enveloped->md_algs; | ||
287 | xalg=p7->d.signed_and_enveloped->enc_data->algorithm; | ||
288 | evp_cipher=p7->d.signed_and_enveloped->enc_data->cipher; | ||
289 | if (evp_cipher == NULL) | ||
290 | { | ||
291 | PKCS7err(PKCS7_F_PKCS7_DATAINIT, | ||
292 | PKCS7_R_CIPHER_NOT_INITIALIZED); | ||
293 | goto err; | ||
294 | } | ||
295 | break; | ||
296 | case NID_pkcs7_enveloped: | ||
297 | rsk=p7->d.enveloped->recipientinfo; | ||
298 | xalg=p7->d.enveloped->enc_data->algorithm; | ||
299 | evp_cipher=p7->d.enveloped->enc_data->cipher; | ||
300 | if (evp_cipher == NULL) | ||
301 | { | ||
302 | PKCS7err(PKCS7_F_PKCS7_DATAINIT, | ||
303 | PKCS7_R_CIPHER_NOT_INITIALIZED); | ||
304 | goto err; | ||
305 | } | ||
306 | break; | ||
307 | case NID_pkcs7_digest: | ||
308 | xa = p7->d.digest->md; | ||
309 | os = PKCS7_get_octet_string(p7->d.digest->contents); | ||
310 | break; | ||
311 | case NID_pkcs7_data: | ||
312 | break; | ||
313 | default: | ||
314 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); | ||
315 | goto err; | ||
316 | } | ||
317 | |||
318 | for (i=0; i<sk_X509_ALGOR_num(md_sk); i++) | ||
319 | if (!PKCS7_bio_add_digest(&out, sk_X509_ALGOR_value(md_sk, i))) | ||
320 | goto err; | ||
321 | |||
322 | if (xa && !PKCS7_bio_add_digest(&out, xa)) | ||
323 | goto err; | ||
324 | |||
325 | if (evp_cipher != NULL) | ||
326 | { | ||
327 | unsigned char key[EVP_MAX_KEY_LENGTH]; | ||
328 | unsigned char iv[EVP_MAX_IV_LENGTH]; | ||
329 | int keylen,ivlen; | ||
330 | EVP_CIPHER_CTX *ctx; | ||
331 | |||
332 | if ((btmp=BIO_new(BIO_f_cipher())) == NULL) | ||
333 | { | ||
334 | PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB); | ||
335 | goto err; | ||
336 | } | ||
337 | BIO_get_cipher_ctx(btmp, &ctx); | ||
338 | keylen=EVP_CIPHER_key_length(evp_cipher); | ||
339 | ivlen=EVP_CIPHER_iv_length(evp_cipher); | ||
340 | xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher)); | ||
341 | if (ivlen > 0) | ||
342 | if (RAND_pseudo_bytes(iv,ivlen) <= 0) | ||
343 | goto err; | ||
344 | if (EVP_CipherInit_ex(ctx, evp_cipher, NULL, NULL, NULL, 1)<=0) | ||
345 | goto err; | ||
346 | if (EVP_CIPHER_CTX_rand_key(ctx, key) <= 0) | ||
347 | goto err; | ||
348 | if (EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, 1) <= 0) | ||
349 | goto err; | ||
350 | |||
351 | if (ivlen > 0) { | ||
352 | if (xalg->parameter == NULL) { | ||
353 | xalg->parameter = ASN1_TYPE_new(); | ||
354 | if (xalg->parameter == NULL) | ||
355 | goto err; | ||
356 | } | ||
357 | if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0) | ||
358 | goto err; | ||
359 | } | ||
360 | |||
361 | /* Lets do the pub key stuff :-) */ | ||
362 | for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) | ||
363 | { | ||
364 | ri=sk_PKCS7_RECIP_INFO_value(rsk,i); | ||
365 | if (pkcs7_encode_rinfo(ri, key, keylen) <= 0) | ||
366 | goto err; | ||
367 | } | ||
368 | OPENSSL_cleanse(key, keylen); | ||
369 | |||
370 | if (out == NULL) | ||
371 | out=btmp; | ||
372 | else | ||
373 | BIO_push(out,btmp); | ||
374 | btmp=NULL; | ||
375 | } | ||
376 | |||
377 | if (bio == NULL) | ||
378 | { | ||
379 | if (PKCS7_is_detached(p7)) | ||
380 | bio=BIO_new(BIO_s_null()); | ||
381 | else if (os && os->length > 0) | ||
382 | bio = BIO_new_mem_buf(os->data, os->length); | ||
383 | if(bio == NULL) | ||
384 | { | ||
385 | bio=BIO_new(BIO_s_mem()); | ||
386 | if (bio == NULL) | ||
387 | goto err; | ||
388 | BIO_set_mem_eof_return(bio,0); | ||
389 | } | ||
390 | } | ||
391 | if (out) | ||
392 | BIO_push(out,bio); | ||
393 | else | ||
394 | out = bio; | ||
395 | bio=NULL; | ||
396 | if (0) | ||
397 | { | ||
398 | err: | ||
399 | if (out != NULL) | ||
400 | BIO_free_all(out); | ||
401 | if (btmp != NULL) | ||
402 | BIO_free_all(btmp); | ||
403 | out=NULL; | ||
404 | } | ||
405 | return(out); | ||
406 | } | ||
407 | |||
408 | static int pkcs7_cmp_ri(PKCS7_RECIP_INFO *ri, X509 *pcert) | ||
409 | { | ||
410 | int ret; | ||
411 | ret = X509_NAME_cmp(ri->issuer_and_serial->issuer, | ||
412 | pcert->cert_info->issuer); | ||
413 | if (ret) | ||
414 | return ret; | ||
415 | return M_ASN1_INTEGER_cmp(pcert->cert_info->serialNumber, | ||
416 | ri->issuer_and_serial->serial); | ||
417 | } | ||
418 | |||
419 | /* int */ | ||
420 | BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert) | ||
421 | { | ||
422 | int i,j; | ||
423 | BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL; | ||
424 | X509_ALGOR *xa; | ||
425 | ASN1_OCTET_STRING *data_body=NULL; | ||
426 | const EVP_MD *evp_md; | ||
427 | const EVP_CIPHER *evp_cipher=NULL; | ||
428 | EVP_CIPHER_CTX *evp_ctx=NULL; | ||
429 | X509_ALGOR *enc_alg=NULL; | ||
430 | STACK_OF(X509_ALGOR) *md_sk=NULL; | ||
431 | STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL; | ||
432 | PKCS7_RECIP_INFO *ri=NULL; | ||
433 | unsigned char *ek = NULL, *tkey = NULL; | ||
434 | int eklen = 0, tkeylen = 0; | ||
435 | |||
436 | i=OBJ_obj2nid(p7->type); | ||
437 | p7->state=PKCS7_S_HEADER; | ||
438 | |||
439 | switch (i) | ||
440 | { | ||
441 | case NID_pkcs7_signed: | ||
442 | data_body=PKCS7_get_octet_string(p7->d.sign->contents); | ||
443 | md_sk=p7->d.sign->md_algs; | ||
444 | break; | ||
445 | case NID_pkcs7_signedAndEnveloped: | ||
446 | rsk=p7->d.signed_and_enveloped->recipientinfo; | ||
447 | md_sk=p7->d.signed_and_enveloped->md_algs; | ||
448 | data_body=p7->d.signed_and_enveloped->enc_data->enc_data; | ||
449 | enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm; | ||
450 | evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm); | ||
451 | if (evp_cipher == NULL) | ||
452 | { | ||
453 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE); | ||
454 | goto err; | ||
455 | } | ||
456 | break; | ||
457 | case NID_pkcs7_enveloped: | ||
458 | rsk=p7->d.enveloped->recipientinfo; | ||
459 | enc_alg=p7->d.enveloped->enc_data->algorithm; | ||
460 | data_body=p7->d.enveloped->enc_data->enc_data; | ||
461 | evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm); | ||
462 | if (evp_cipher == NULL) | ||
463 | { | ||
464 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE); | ||
465 | goto err; | ||
466 | } | ||
467 | break; | ||
468 | default: | ||
469 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); | ||
470 | goto err; | ||
471 | } | ||
472 | |||
473 | /* We will be checking the signature */ | ||
474 | if (md_sk != NULL) | ||
475 | { | ||
476 | for (i=0; i<sk_X509_ALGOR_num(md_sk); i++) | ||
477 | { | ||
478 | xa=sk_X509_ALGOR_value(md_sk,i); | ||
479 | if ((btmp=BIO_new(BIO_f_md())) == NULL) | ||
480 | { | ||
481 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB); | ||
482 | goto err; | ||
483 | } | ||
484 | |||
485 | j=OBJ_obj2nid(xa->algorithm); | ||
486 | evp_md=EVP_get_digestbynid(j); | ||
487 | if (evp_md == NULL) | ||
488 | { | ||
489 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE); | ||
490 | goto err; | ||
491 | } | ||
492 | |||
493 | BIO_set_md(btmp,evp_md); | ||
494 | if (out == NULL) | ||
495 | out=btmp; | ||
496 | else | ||
497 | BIO_push(out,btmp); | ||
498 | btmp=NULL; | ||
499 | } | ||
500 | } | ||
501 | |||
502 | if (evp_cipher != NULL) | ||
503 | { | ||
504 | #if 0 | ||
505 | unsigned char key[EVP_MAX_KEY_LENGTH]; | ||
506 | unsigned char iv[EVP_MAX_IV_LENGTH]; | ||
507 | unsigned char *p; | ||
508 | int keylen,ivlen; | ||
509 | int max; | ||
510 | X509_OBJECT ret; | ||
511 | #endif | ||
512 | |||
513 | if ((etmp=BIO_new(BIO_f_cipher())) == NULL) | ||
514 | { | ||
515 | PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB); | ||
516 | goto err; | ||
517 | } | ||
518 | |||
519 | /* It was encrypted, we need to decrypt the secret key | ||
520 | * with the private key */ | ||
521 | |||
522 | /* Find the recipientInfo which matches the passed certificate | ||
523 | * (if any) | ||
524 | */ | ||
525 | |||
526 | if (pcert) | ||
527 | { | ||
528 | for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) | ||
529 | { | ||
530 | ri=sk_PKCS7_RECIP_INFO_value(rsk,i); | ||
531 | if (!pkcs7_cmp_ri(ri, pcert)) | ||
532 | break; | ||
533 | ri=NULL; | ||
534 | } | ||
535 | if (ri == NULL) | ||
536 | { | ||
537 | PKCS7err(PKCS7_F_PKCS7_DATADECODE, | ||
538 | PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE); | ||
539 | goto err; | ||
540 | } | ||
541 | } | ||
542 | |||
543 | /* If we haven't got a certificate try each ri in turn */ | ||
544 | if (pcert == NULL) | ||
545 | { | ||
546 | /* Always attempt to decrypt all rinfo even | ||
547 | * after sucess as a defence against MMA timing | ||
548 | * attacks. | ||
549 | */ | ||
550 | for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) | ||
551 | { | ||
552 | ri=sk_PKCS7_RECIP_INFO_value(rsk,i); | ||
553 | |||
554 | if (pkcs7_decrypt_rinfo(&ek, &eklen, | ||
555 | ri, pkey) < 0) | ||
556 | goto err; | ||
557 | ERR_clear_error(); | ||
558 | } | ||
559 | } | ||
560 | else | ||
561 | { | ||
562 | /* Only exit on fatal errors, not decrypt failure */ | ||
563 | if (pkcs7_decrypt_rinfo(&ek, &eklen, ri, pkey) < 0) | ||
564 | goto err; | ||
565 | ERR_clear_error(); | ||
566 | } | ||
567 | |||
568 | evp_ctx=NULL; | ||
569 | BIO_get_cipher_ctx(etmp,&evp_ctx); | ||
570 | if (EVP_CipherInit_ex(evp_ctx,evp_cipher,NULL,NULL,NULL,0) <= 0) | ||
571 | goto err; | ||
572 | if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0) | ||
573 | goto err; | ||
574 | /* Generate random key as MMA defence */ | ||
575 | tkeylen = EVP_CIPHER_CTX_key_length(evp_ctx); | ||
576 | tkey = OPENSSL_malloc(tkeylen); | ||
577 | if (!tkey) | ||
578 | goto err; | ||
579 | if (EVP_CIPHER_CTX_rand_key(evp_ctx, tkey) <= 0) | ||
580 | goto err; | ||
581 | if (ek == NULL) | ||
582 | { | ||
583 | ek = tkey; | ||
584 | eklen = tkeylen; | ||
585 | tkey = NULL; | ||
586 | } | ||
587 | |||
588 | if (eklen != EVP_CIPHER_CTX_key_length(evp_ctx)) { | ||
589 | /* Some S/MIME clients don't use the same key | ||
590 | * and effective key length. The key length is | ||
591 | * determined by the size of the decrypted RSA key. | ||
592 | */ | ||
593 | if(!EVP_CIPHER_CTX_set_key_length(evp_ctx, eklen)) | ||
594 | { | ||
595 | /* Use random key as MMA defence */ | ||
596 | OPENSSL_cleanse(ek, eklen); | ||
597 | OPENSSL_free(ek); | ||
598 | ek = tkey; | ||
599 | eklen = tkeylen; | ||
600 | tkey = NULL; | ||
601 | } | ||
602 | } | ||
603 | /* Clear errors so we don't leak information useful in MMA */ | ||
604 | ERR_clear_error(); | ||
605 | if (EVP_CipherInit_ex(evp_ctx,NULL,NULL,ek,NULL,0) <= 0) | ||
606 | goto err; | ||
607 | |||
608 | if (ek) | ||
609 | { | ||
610 | OPENSSL_cleanse(ek,eklen); | ||
611 | OPENSSL_free(ek); | ||
612 | ek = NULL; | ||
613 | } | ||
614 | if (tkey) | ||
615 | { | ||
616 | OPENSSL_cleanse(tkey,tkeylen); | ||
617 | OPENSSL_free(tkey); | ||
618 | tkey = NULL; | ||
619 | } | ||
620 | |||
621 | if (out == NULL) | ||
622 | out=etmp; | ||
623 | else | ||
624 | BIO_push(out,etmp); | ||
625 | etmp=NULL; | ||
626 | } | ||
627 | |||
628 | #if 1 | ||
629 | if (PKCS7_is_detached(p7) || (in_bio != NULL)) | ||
630 | { | ||
631 | bio=in_bio; | ||
632 | } | ||
633 | else | ||
634 | { | ||
635 | #if 0 | ||
636 | bio=BIO_new(BIO_s_mem()); | ||
637 | /* We need to set this so that when we have read all | ||
638 | * the data, the encrypt BIO, if present, will read | ||
639 | * EOF and encode the last few bytes */ | ||
640 | BIO_set_mem_eof_return(bio,0); | ||
641 | |||
642 | if (data_body->length > 0) | ||
643 | BIO_write(bio,(char *)data_body->data,data_body->length); | ||
644 | #else | ||
645 | if (data_body->length > 0) | ||
646 | bio = BIO_new_mem_buf(data_body->data,data_body->length); | ||
647 | else { | ||
648 | bio=BIO_new(BIO_s_mem()); | ||
649 | BIO_set_mem_eof_return(bio,0); | ||
650 | } | ||
651 | if (bio == NULL) | ||
652 | goto err; | ||
653 | #endif | ||
654 | } | ||
655 | BIO_push(out,bio); | ||
656 | bio=NULL; | ||
657 | #endif | ||
658 | if (0) | ||
659 | { | ||
660 | err: | ||
661 | if (ek) | ||
662 | { | ||
663 | OPENSSL_cleanse(ek,eklen); | ||
664 | OPENSSL_free(ek); | ||
665 | } | ||
666 | if (tkey) | ||
667 | { | ||
668 | OPENSSL_cleanse(tkey,tkeylen); | ||
669 | OPENSSL_free(tkey); | ||
670 | } | ||
671 | if (out != NULL) BIO_free_all(out); | ||
672 | if (btmp != NULL) BIO_free_all(btmp); | ||
673 | if (etmp != NULL) BIO_free_all(etmp); | ||
674 | if (bio != NULL) BIO_free_all(bio); | ||
675 | out=NULL; | ||
676 | } | ||
677 | return(out); | ||
678 | } | ||
679 | |||
680 | static BIO *PKCS7_find_digest(EVP_MD_CTX **pmd, BIO *bio, int nid) | ||
681 | { | ||
682 | for (;;) | ||
683 | { | ||
684 | bio=BIO_find_type(bio,BIO_TYPE_MD); | ||
685 | if (bio == NULL) | ||
686 | { | ||
687 | PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); | ||
688 | return NULL; | ||
689 | } | ||
690 | BIO_get_md_ctx(bio,pmd); | ||
691 | if (*pmd == NULL) | ||
692 | { | ||
693 | PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,ERR_R_INTERNAL_ERROR); | ||
694 | return NULL; | ||
695 | } | ||
696 | if (EVP_MD_CTX_type(*pmd) == nid) | ||
697 | return bio; | ||
698 | bio=BIO_next(bio); | ||
699 | } | ||
700 | return NULL; | ||
701 | } | ||
702 | |||
703 | static int do_pkcs7_signed_attrib(PKCS7_SIGNER_INFO *si, EVP_MD_CTX *mctx) | ||
704 | { | ||
705 | unsigned char md_data[EVP_MAX_MD_SIZE]; | ||
706 | unsigned int md_len; | ||
707 | |||
708 | /* Add signing time if not already present */ | ||
709 | if (!PKCS7_get_signed_attribute(si, NID_pkcs9_signingTime)) | ||
710 | { | ||
711 | if (!PKCS7_add0_attrib_signing_time(si, NULL)) | ||
712 | { | ||
713 | PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB, | ||
714 | ERR_R_MALLOC_FAILURE); | ||
715 | return 0; | ||
716 | } | ||
717 | } | ||
718 | |||
719 | /* Add digest */ | ||
720 | if (!EVP_DigestFinal_ex(mctx, md_data,&md_len)) | ||
721 | { | ||
722 | PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB, ERR_R_EVP_LIB); | ||
723 | return 0; | ||
724 | } | ||
725 | if (!PKCS7_add1_attrib_digest(si, md_data, md_len)) | ||
726 | { | ||
727 | PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB, ERR_R_MALLOC_FAILURE); | ||
728 | return 0; | ||
729 | } | ||
730 | |||
731 | /* Now sign the attributes */ | ||
732 | if (!PKCS7_SIGNER_INFO_sign(si)) | ||
733 | return 0; | ||
734 | |||
735 | return 1; | ||
736 | } | ||
737 | |||
738 | |||
739 | int PKCS7_dataFinal(PKCS7 *p7, BIO *bio) | ||
740 | { | ||
741 | int ret=0; | ||
742 | int i,j; | ||
743 | BIO *btmp; | ||
744 | PKCS7_SIGNER_INFO *si; | ||
745 | EVP_MD_CTX *mdc,ctx_tmp; | ||
746 | STACK_OF(X509_ATTRIBUTE) *sk; | ||
747 | STACK_OF(PKCS7_SIGNER_INFO) *si_sk=NULL; | ||
748 | ASN1_OCTET_STRING *os=NULL; | ||
749 | |||
750 | EVP_MD_CTX_init(&ctx_tmp); | ||
751 | i=OBJ_obj2nid(p7->type); | ||
752 | p7->state=PKCS7_S_HEADER; | ||
753 | |||
754 | switch (i) | ||
755 | { | ||
756 | case NID_pkcs7_data: | ||
757 | os = p7->d.data; | ||
758 | break; | ||
759 | case NID_pkcs7_signedAndEnveloped: | ||
760 | /* XXXXXXXXXXXXXXXX */ | ||
761 | si_sk=p7->d.signed_and_enveloped->signer_info; | ||
762 | os = p7->d.signed_and_enveloped->enc_data->enc_data; | ||
763 | if (!os) | ||
764 | { | ||
765 | os=M_ASN1_OCTET_STRING_new(); | ||
766 | if (!os) | ||
767 | { | ||
768 | PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_MALLOC_FAILURE); | ||
769 | goto err; | ||
770 | } | ||
771 | p7->d.signed_and_enveloped->enc_data->enc_data=os; | ||
772 | } | ||
773 | break; | ||
774 | case NID_pkcs7_enveloped: | ||
775 | /* XXXXXXXXXXXXXXXX */ | ||
776 | os = p7->d.enveloped->enc_data->enc_data; | ||
777 | if (!os) | ||
778 | { | ||
779 | os=M_ASN1_OCTET_STRING_new(); | ||
780 | if (!os) | ||
781 | { | ||
782 | PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_MALLOC_FAILURE); | ||
783 | goto err; | ||
784 | } | ||
785 | p7->d.enveloped->enc_data->enc_data=os; | ||
786 | } | ||
787 | break; | ||
788 | case NID_pkcs7_signed: | ||
789 | si_sk=p7->d.sign->signer_info; | ||
790 | os=PKCS7_get_octet_string(p7->d.sign->contents); | ||
791 | /* If detached data then the content is excluded */ | ||
792 | if(PKCS7_type_is_data(p7->d.sign->contents) && p7->detached) { | ||
793 | M_ASN1_OCTET_STRING_free(os); | ||
794 | p7->d.sign->contents->d.data = NULL; | ||
795 | } | ||
796 | break; | ||
797 | |||
798 | case NID_pkcs7_digest: | ||
799 | os=PKCS7_get_octet_string(p7->d.digest->contents); | ||
800 | /* If detached data then the content is excluded */ | ||
801 | if(PKCS7_type_is_data(p7->d.digest->contents) && p7->detached) | ||
802 | { | ||
803 | M_ASN1_OCTET_STRING_free(os); | ||
804 | p7->d.digest->contents->d.data = NULL; | ||
805 | } | ||
806 | break; | ||
807 | |||
808 | default: | ||
809 | PKCS7err(PKCS7_F_PKCS7_DATAFINAL,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); | ||
810 | goto err; | ||
811 | } | ||
812 | |||
813 | if (si_sk != NULL) | ||
814 | { | ||
815 | for (i=0; i<sk_PKCS7_SIGNER_INFO_num(si_sk); i++) | ||
816 | { | ||
817 | si=sk_PKCS7_SIGNER_INFO_value(si_sk,i); | ||
818 | if (si->pkey == NULL) | ||
819 | continue; | ||
820 | |||
821 | j = OBJ_obj2nid(si->digest_alg->algorithm); | ||
822 | |||
823 | btmp=bio; | ||
824 | |||
825 | btmp = PKCS7_find_digest(&mdc, btmp, j); | ||
826 | |||
827 | if (btmp == NULL) | ||
828 | goto err; | ||
829 | |||
830 | /* We now have the EVP_MD_CTX, lets do the | ||
831 | * signing. */ | ||
832 | if (!EVP_MD_CTX_copy_ex(&ctx_tmp,mdc)) | ||
833 | goto err; | ||
834 | |||
835 | sk=si->auth_attr; | ||
836 | |||
837 | /* If there are attributes, we add the digest | ||
838 | * attribute and only sign the attributes */ | ||
839 | if (sk_X509_ATTRIBUTE_num(sk) > 0) | ||
840 | { | ||
841 | if (!do_pkcs7_signed_attrib(si, &ctx_tmp)) | ||
842 | goto err; | ||
843 | } | ||
844 | else | ||
845 | { | ||
846 | unsigned char *abuf = NULL; | ||
847 | unsigned int abuflen; | ||
848 | abuflen = EVP_PKEY_size(si->pkey); | ||
849 | abuf = OPENSSL_malloc(abuflen); | ||
850 | if (!abuf) | ||
851 | goto err; | ||
852 | |||
853 | if (!EVP_SignFinal(&ctx_tmp, abuf, &abuflen, | ||
854 | si->pkey)) | ||
855 | { | ||
856 | PKCS7err(PKCS7_F_PKCS7_DATAFINAL, | ||
857 | ERR_R_EVP_LIB); | ||
858 | goto err; | ||
859 | } | ||
860 | ASN1_STRING_set0(si->enc_digest, abuf, abuflen); | ||
861 | } | ||
862 | } | ||
863 | } | ||
864 | else if (i == NID_pkcs7_digest) | ||
865 | { | ||
866 | unsigned char md_data[EVP_MAX_MD_SIZE]; | ||
867 | unsigned int md_len; | ||
868 | if (!PKCS7_find_digest(&mdc, bio, | ||
869 | OBJ_obj2nid(p7->d.digest->md->algorithm))) | ||
870 | goto err; | ||
871 | if (!EVP_DigestFinal_ex(mdc,md_data,&md_len)) | ||
872 | goto err; | ||
873 | M_ASN1_OCTET_STRING_set(p7->d.digest->digest, md_data, md_len); | ||
874 | } | ||
875 | |||
876 | if (!PKCS7_is_detached(p7) && !(os->flags & ASN1_STRING_FLAG_NDEF)) | ||
877 | { | ||
878 | char *cont; | ||
879 | long contlen; | ||
880 | btmp=BIO_find_type(bio,BIO_TYPE_MEM); | ||
881 | if (btmp == NULL) | ||
882 | { | ||
883 | PKCS7err(PKCS7_F_PKCS7_DATAFINAL,PKCS7_R_UNABLE_TO_FIND_MEM_BIO); | ||
884 | goto err; | ||
885 | } | ||
886 | contlen = BIO_get_mem_data(btmp, &cont); | ||
887 | /* Mark the BIO read only then we can use its copy of the data | ||
888 | * instead of making an extra copy. | ||
889 | */ | ||
890 | BIO_set_flags(btmp, BIO_FLAGS_MEM_RDONLY); | ||
891 | BIO_set_mem_eof_return(btmp, 0); | ||
892 | ASN1_STRING_set0(os, (unsigned char *)cont, contlen); | ||
893 | } | ||
894 | ret=1; | ||
895 | err: | ||
896 | EVP_MD_CTX_cleanup(&ctx_tmp); | ||
897 | return(ret); | ||
898 | } | ||
899 | |||
900 | int PKCS7_SIGNER_INFO_sign(PKCS7_SIGNER_INFO *si) | ||
901 | { | ||
902 | EVP_MD_CTX mctx; | ||
903 | EVP_PKEY_CTX *pctx; | ||
904 | unsigned char *abuf = NULL; | ||
905 | int alen; | ||
906 | size_t siglen; | ||
907 | const EVP_MD *md = NULL; | ||
908 | |||
909 | md = EVP_get_digestbyobj(si->digest_alg->algorithm); | ||
910 | if (md == NULL) | ||
911 | return 0; | ||
912 | |||
913 | EVP_MD_CTX_init(&mctx); | ||
914 | if (EVP_DigestSignInit(&mctx, &pctx, md,NULL, si->pkey) <= 0) | ||
915 | goto err; | ||
916 | |||
917 | if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN, | ||
918 | EVP_PKEY_CTRL_PKCS7_SIGN, 0, si) <= 0) | ||
919 | { | ||
920 | PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SIGN, PKCS7_R_CTRL_ERROR); | ||
921 | goto err; | ||
922 | } | ||
923 | |||
924 | alen = ASN1_item_i2d((ASN1_VALUE *)si->auth_attr,&abuf, | ||
925 | ASN1_ITEM_rptr(PKCS7_ATTR_SIGN)); | ||
926 | if(!abuf) | ||
927 | goto err; | ||
928 | if (EVP_DigestSignUpdate(&mctx,abuf,alen) <= 0) | ||
929 | goto err; | ||
930 | OPENSSL_free(abuf); | ||
931 | if (EVP_DigestSignFinal(&mctx, NULL, &siglen) <= 0) | ||
932 | goto err; | ||
933 | abuf = OPENSSL_malloc(siglen); | ||
934 | if(!abuf) | ||
935 | goto err; | ||
936 | if (EVP_DigestSignFinal(&mctx, abuf, &siglen) <= 0) | ||
937 | goto err; | ||
938 | |||
939 | if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN, | ||
940 | EVP_PKEY_CTRL_PKCS7_SIGN, 1, si) <= 0) | ||
941 | { | ||
942 | PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SIGN, PKCS7_R_CTRL_ERROR); | ||
943 | goto err; | ||
944 | } | ||
945 | |||
946 | EVP_MD_CTX_cleanup(&mctx); | ||
947 | |||
948 | ASN1_STRING_set0(si->enc_digest, abuf, siglen); | ||
949 | |||
950 | return 1; | ||
951 | |||
952 | err: | ||
953 | if (abuf) | ||
954 | OPENSSL_free(abuf); | ||
955 | EVP_MD_CTX_cleanup(&mctx); | ||
956 | return 0; | ||
957 | |||
958 | } | ||
959 | |||
960 | int PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio, | ||
961 | PKCS7 *p7, PKCS7_SIGNER_INFO *si) | ||
962 | { | ||
963 | PKCS7_ISSUER_AND_SERIAL *ias; | ||
964 | int ret=0,i; | ||
965 | STACK_OF(X509) *cert; | ||
966 | X509 *x509; | ||
967 | |||
968 | if (PKCS7_type_is_signed(p7)) | ||
969 | { | ||
970 | cert=p7->d.sign->cert; | ||
971 | } | ||
972 | else if (PKCS7_type_is_signedAndEnveloped(p7)) | ||
973 | { | ||
974 | cert=p7->d.signed_and_enveloped->cert; | ||
975 | } | ||
976 | else | ||
977 | { | ||
978 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_WRONG_PKCS7_TYPE); | ||
979 | goto err; | ||
980 | } | ||
981 | /* XXXXXXXXXXXXXXXXXXXXXXX */ | ||
982 | ias=si->issuer_and_serial; | ||
983 | |||
984 | x509=X509_find_by_issuer_and_serial(cert,ias->issuer,ias->serial); | ||
985 | |||
986 | /* were we able to find the cert in passed to us */ | ||
987 | if (x509 == NULL) | ||
988 | { | ||
989 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_CERTIFICATE); | ||
990 | goto err; | ||
991 | } | ||
992 | |||
993 | /* Lets verify */ | ||
994 | if(!X509_STORE_CTX_init(ctx,cert_store,x509,cert)) | ||
995 | { | ||
996 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB); | ||
997 | goto err; | ||
998 | } | ||
999 | X509_STORE_CTX_set_purpose(ctx, X509_PURPOSE_SMIME_SIGN); | ||
1000 | i=X509_verify_cert(ctx); | ||
1001 | if (i <= 0) | ||
1002 | { | ||
1003 | PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB); | ||
1004 | X509_STORE_CTX_cleanup(ctx); | ||
1005 | goto err; | ||
1006 | } | ||
1007 | X509_STORE_CTX_cleanup(ctx); | ||
1008 | |||
1009 | return PKCS7_signatureVerify(bio, p7, si, x509); | ||
1010 | err: | ||
1011 | return ret; | ||
1012 | } | ||
1013 | |||
1014 | int PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si, | ||
1015 | X509 *x509) | ||
1016 | { | ||
1017 | ASN1_OCTET_STRING *os; | ||
1018 | EVP_MD_CTX mdc_tmp,*mdc; | ||
1019 | int ret=0,i; | ||
1020 | int md_type; | ||
1021 | STACK_OF(X509_ATTRIBUTE) *sk; | ||
1022 | BIO *btmp; | ||
1023 | EVP_PKEY *pkey; | ||
1024 | |||
1025 | EVP_MD_CTX_init(&mdc_tmp); | ||
1026 | |||
1027 | if (!PKCS7_type_is_signed(p7) && | ||
1028 | !PKCS7_type_is_signedAndEnveloped(p7)) { | ||
1029 | PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, | ||
1030 | PKCS7_R_WRONG_PKCS7_TYPE); | ||
1031 | goto err; | ||
1032 | } | ||
1033 | |||
1034 | md_type=OBJ_obj2nid(si->digest_alg->algorithm); | ||
1035 | |||
1036 | btmp=bio; | ||
1037 | for (;;) | ||
1038 | { | ||
1039 | if ((btmp == NULL) || | ||
1040 | ((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL)) | ||
1041 | { | ||
1042 | PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, | ||
1043 | PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); | ||
1044 | goto err; | ||
1045 | } | ||
1046 | BIO_get_md_ctx(btmp,&mdc); | ||
1047 | if (mdc == NULL) | ||
1048 | { | ||
1049 | PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, | ||
1050 | ERR_R_INTERNAL_ERROR); | ||
1051 | goto err; | ||
1052 | } | ||
1053 | if (EVP_MD_CTX_type(mdc) == md_type) | ||
1054 | break; | ||
1055 | /* Workaround for some broken clients that put the signature | ||
1056 | * OID instead of the digest OID in digest_alg->algorithm | ||
1057 | */ | ||
1058 | if (EVP_MD_pkey_type(EVP_MD_CTX_md(mdc)) == md_type) | ||
1059 | break; | ||
1060 | btmp=BIO_next(btmp); | ||
1061 | } | ||
1062 | |||
1063 | /* mdc is the digest ctx that we want, unless there are attributes, | ||
1064 | * in which case the digest is the signed attributes */ | ||
1065 | if (!EVP_MD_CTX_copy_ex(&mdc_tmp,mdc)) | ||
1066 | goto err; | ||
1067 | |||
1068 | sk=si->auth_attr; | ||
1069 | if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0)) | ||
1070 | { | ||
1071 | unsigned char md_dat[EVP_MAX_MD_SIZE], *abuf = NULL; | ||
1072 | unsigned int md_len; | ||
1073 | int alen; | ||
1074 | ASN1_OCTET_STRING *message_digest; | ||
1075 | |||
1076 | if (!EVP_DigestFinal_ex(&mdc_tmp,md_dat,&md_len)) | ||
1077 | goto err; | ||
1078 | message_digest=PKCS7_digest_from_attributes(sk); | ||
1079 | if (!message_digest) | ||
1080 | { | ||
1081 | PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, | ||
1082 | PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); | ||
1083 | goto err; | ||
1084 | } | ||
1085 | if ((message_digest->length != (int)md_len) || | ||
1086 | (memcmp(message_digest->data,md_dat,md_len))) | ||
1087 | { | ||
1088 | #if 0 | ||
1089 | { | ||
1090 | int ii; | ||
1091 | for (ii=0; ii<message_digest->length; ii++) | ||
1092 | printf("%02X",message_digest->data[ii]); printf(" sent\n"); | ||
1093 | for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n"); | ||
1094 | } | ||
1095 | #endif | ||
1096 | PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, | ||
1097 | PKCS7_R_DIGEST_FAILURE); | ||
1098 | ret= -1; | ||
1099 | goto err; | ||
1100 | } | ||
1101 | |||
1102 | if (!EVP_VerifyInit_ex(&mdc_tmp,EVP_get_digestbynid(md_type), NULL)) | ||
1103 | goto err; | ||
1104 | |||
1105 | alen = ASN1_item_i2d((ASN1_VALUE *)sk, &abuf, | ||
1106 | ASN1_ITEM_rptr(PKCS7_ATTR_VERIFY)); | ||
1107 | if (alen <= 0) | ||
1108 | { | ||
1109 | PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,ERR_R_ASN1_LIB); | ||
1110 | ret = -1; | ||
1111 | goto err; | ||
1112 | } | ||
1113 | if (!EVP_VerifyUpdate(&mdc_tmp, abuf, alen)) | ||
1114 | goto err; | ||
1115 | |||
1116 | OPENSSL_free(abuf); | ||
1117 | } | ||
1118 | |||
1119 | os=si->enc_digest; | ||
1120 | pkey = X509_get_pubkey(x509); | ||
1121 | if (!pkey) | ||
1122 | { | ||
1123 | ret = -1; | ||
1124 | goto err; | ||
1125 | } | ||
1126 | |||
1127 | i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey); | ||
1128 | EVP_PKEY_free(pkey); | ||
1129 | if (i <= 0) | ||
1130 | { | ||
1131 | PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, | ||
1132 | PKCS7_R_SIGNATURE_FAILURE); | ||
1133 | ret= -1; | ||
1134 | goto err; | ||
1135 | } | ||
1136 | else | ||
1137 | ret=1; | ||
1138 | err: | ||
1139 | EVP_MD_CTX_cleanup(&mdc_tmp); | ||
1140 | return(ret); | ||
1141 | } | ||
1142 | |||
1143 | PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx) | ||
1144 | { | ||
1145 | STACK_OF(PKCS7_RECIP_INFO) *rsk; | ||
1146 | PKCS7_RECIP_INFO *ri; | ||
1147 | int i; | ||
1148 | |||
1149 | i=OBJ_obj2nid(p7->type); | ||
1150 | if (i != NID_pkcs7_signedAndEnveloped) | ||
1151 | return NULL; | ||
1152 | if (p7->d.signed_and_enveloped == NULL) | ||
1153 | return NULL; | ||
1154 | rsk=p7->d.signed_and_enveloped->recipientinfo; | ||
1155 | if (rsk == NULL) | ||
1156 | return NULL; | ||
1157 | ri=sk_PKCS7_RECIP_INFO_value(rsk,0); | ||
1158 | if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx) return(NULL); | ||
1159 | ri=sk_PKCS7_RECIP_INFO_value(rsk,idx); | ||
1160 | return(ri->issuer_and_serial); | ||
1161 | } | ||
1162 | |||
1163 | ASN1_TYPE *PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO *si, int nid) | ||
1164 | { | ||
1165 | return(get_attribute(si->auth_attr,nid)); | ||
1166 | } | ||
1167 | |||
1168 | ASN1_TYPE *PKCS7_get_attribute(PKCS7_SIGNER_INFO *si, int nid) | ||
1169 | { | ||
1170 | return(get_attribute(si->unauth_attr,nid)); | ||
1171 | } | ||
1172 | |||
1173 | static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid) | ||
1174 | { | ||
1175 | int i; | ||
1176 | X509_ATTRIBUTE *xa; | ||
1177 | ASN1_OBJECT *o; | ||
1178 | |||
1179 | o=OBJ_nid2obj(nid); | ||
1180 | if (!o || !sk) return(NULL); | ||
1181 | for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++) | ||
1182 | { | ||
1183 | xa=sk_X509_ATTRIBUTE_value(sk,i); | ||
1184 | if (OBJ_cmp(xa->object,o) == 0) | ||
1185 | { | ||
1186 | if (!xa->single && sk_ASN1_TYPE_num(xa->value.set)) | ||
1187 | return(sk_ASN1_TYPE_value(xa->value.set,0)); | ||
1188 | else | ||
1189 | return(NULL); | ||
1190 | } | ||
1191 | } | ||
1192 | return(NULL); | ||
1193 | } | ||
1194 | |||
1195 | ASN1_OCTET_STRING *PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk) | ||
1196 | { | ||
1197 | ASN1_TYPE *astype; | ||
1198 | if(!(astype = get_attribute(sk, NID_pkcs9_messageDigest))) return NULL; | ||
1199 | return astype->value.octet_string; | ||
1200 | } | ||
1201 | |||
1202 | int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si, | ||
1203 | STACK_OF(X509_ATTRIBUTE) *sk) | ||
1204 | { | ||
1205 | int i; | ||
1206 | |||
1207 | if (p7si->auth_attr != NULL) | ||
1208 | sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free); | ||
1209 | p7si->auth_attr=sk_X509_ATTRIBUTE_dup(sk); | ||
1210 | if (p7si->auth_attr == NULL) | ||
1211 | return 0; | ||
1212 | for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++) | ||
1213 | { | ||
1214 | if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr,i, | ||
1215 | X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i)))) | ||
1216 | == NULL) | ||
1217 | return(0); | ||
1218 | } | ||
1219 | return(1); | ||
1220 | } | ||
1221 | |||
1222 | int PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk) | ||
1223 | { | ||
1224 | int i; | ||
1225 | |||
1226 | if (p7si->unauth_attr != NULL) | ||
1227 | sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr, | ||
1228 | X509_ATTRIBUTE_free); | ||
1229 | p7si->unauth_attr=sk_X509_ATTRIBUTE_dup(sk); | ||
1230 | if (p7si->unauth_attr == NULL) | ||
1231 | return 0; | ||
1232 | for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++) | ||
1233 | { | ||
1234 | if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr,i, | ||
1235 | X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i)))) | ||
1236 | == NULL) | ||
1237 | return(0); | ||
1238 | } | ||
1239 | return(1); | ||
1240 | } | ||
1241 | |||
1242 | int PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype, | ||
1243 | void *value) | ||
1244 | { | ||
1245 | return(add_attribute(&(p7si->auth_attr),nid,atrtype,value)); | ||
1246 | } | ||
1247 | |||
1248 | int PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype, | ||
1249 | void *value) | ||
1250 | { | ||
1251 | return(add_attribute(&(p7si->unauth_attr),nid,atrtype,value)); | ||
1252 | } | ||
1253 | |||
1254 | static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype, | ||
1255 | void *value) | ||
1256 | { | ||
1257 | X509_ATTRIBUTE *attr=NULL; | ||
1258 | |||
1259 | if (*sk == NULL) | ||
1260 | { | ||
1261 | *sk = sk_X509_ATTRIBUTE_new_null(); | ||
1262 | if (*sk == NULL) | ||
1263 | return 0; | ||
1264 | new_attrib: | ||
1265 | if (!(attr=X509_ATTRIBUTE_create(nid,atrtype,value))) | ||
1266 | return 0; | ||
1267 | if (!sk_X509_ATTRIBUTE_push(*sk,attr)) | ||
1268 | { | ||
1269 | X509_ATTRIBUTE_free(attr); | ||
1270 | return 0; | ||
1271 | } | ||
1272 | } | ||
1273 | else | ||
1274 | { | ||
1275 | int i; | ||
1276 | |||
1277 | for (i=0; i<sk_X509_ATTRIBUTE_num(*sk); i++) | ||
1278 | { | ||
1279 | attr=sk_X509_ATTRIBUTE_value(*sk,i); | ||
1280 | if (OBJ_obj2nid(attr->object) == nid) | ||
1281 | { | ||
1282 | X509_ATTRIBUTE_free(attr); | ||
1283 | attr=X509_ATTRIBUTE_create(nid,atrtype,value); | ||
1284 | if (attr == NULL) | ||
1285 | return 0; | ||
1286 | if (!sk_X509_ATTRIBUTE_set(*sk,i,attr)) | ||
1287 | { | ||
1288 | X509_ATTRIBUTE_free(attr); | ||
1289 | return 0; | ||
1290 | } | ||
1291 | goto end; | ||
1292 | } | ||
1293 | } | ||
1294 | goto new_attrib; | ||
1295 | } | ||
1296 | end: | ||
1297 | return(1); | ||
1298 | } | ||
1299 | |||