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d02b48c6 | 1 | /* crypto/pkcs7/pk7_lib.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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 "objects.h" | |
62 | #include "x509.h" | |
63 | ||
64 | long PKCS7_ctrl(p7,cmd,larg,parg) | |
65 | PKCS7 *p7; | |
66 | int cmd; | |
67 | long larg; | |
68 | char *parg; | |
69 | { | |
70 | int nid; | |
71 | long ret; | |
72 | ||
73 | nid=OBJ_obj2nid(p7->type); | |
74 | ||
75 | switch (cmd) | |
76 | { | |
77 | case PKCS7_OP_SET_DETACHED_SIGNATURE: | |
78 | if (nid == NID_pkcs7_signed) | |
79 | { | |
80 | ret=p7->detached=(int)larg; | |
81 | } | |
82 | else | |
83 | { | |
84 | PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE); | |
85 | ret=0; | |
86 | } | |
87 | break; | |
88 | case PKCS7_OP_GET_DETACHED_SIGNATURE: | |
89 | if (nid == NID_pkcs7_signed) | |
90 | { | |
91 | ret=p7->detached; | |
92 | } | |
93 | else | |
94 | { | |
95 | PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE); | |
96 | ret=0; | |
97 | } | |
98 | ||
99 | break; | |
100 | default: | |
dfeab068 RE |
101 | PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_UNKNOWN_OPERATION); |
102 | ret=0; | |
d02b48c6 RE |
103 | } |
104 | return(ret); | |
105 | } | |
106 | ||
107 | int PKCS7_content_new(p7,type) | |
108 | PKCS7 *p7; | |
109 | int type; | |
110 | { | |
111 | PKCS7 *ret=NULL; | |
112 | ||
113 | if ((ret=PKCS7_new()) == NULL) goto err; | |
114 | if (!PKCS7_set_type(ret,type)) goto err; | |
115 | if (!PKCS7_set_content(p7,ret)) goto err; | |
116 | ||
117 | return(1); | |
118 | err: | |
119 | if (ret != NULL) PKCS7_free(ret); | |
120 | return(0); | |
121 | } | |
122 | ||
123 | int PKCS7_set_content(p7,p7_data) | |
124 | PKCS7 *p7; | |
125 | PKCS7 *p7_data; | |
126 | { | |
127 | int i; | |
128 | ||
129 | i=OBJ_obj2nid(p7->type); | |
130 | switch (i) | |
131 | { | |
132 | case NID_pkcs7_signed: | |
133 | if (p7->d.sign->contents != NULL) | |
134 | PKCS7_content_free(p7->d.sign->contents); | |
135 | p7->d.sign->contents=p7_data; | |
136 | break; | |
137 | case NID_pkcs7_digest: | |
138 | case NID_pkcs7_data: | |
139 | case NID_pkcs7_enveloped: | |
140 | case NID_pkcs7_signedAndEnveloped: | |
141 | case NID_pkcs7_encrypted: | |
142 | default: | |
143 | PKCS7err(PKCS7_F_PKCS7_SET_CONTENT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); | |
144 | goto err; | |
145 | } | |
146 | return(1); | |
147 | err: | |
148 | return(0); | |
149 | } | |
150 | ||
151 | int PKCS7_set_type(p7,type) | |
152 | PKCS7 *p7; | |
153 | int type; | |
154 | { | |
155 | ASN1_OBJECT *obj; | |
156 | ||
157 | PKCS7_content_free(p7); | |
158 | obj=OBJ_nid2obj(type); /* will not fail */ | |
159 | ||
160 | switch (type) | |
161 | { | |
162 | case NID_pkcs7_signed: | |
163 | p7->type=obj; | |
164 | if ((p7->d.sign=PKCS7_SIGNED_new()) == NULL) | |
165 | goto err; | |
166 | ASN1_INTEGER_set(p7->d.sign->version,1); | |
167 | break; | |
168 | case NID_pkcs7_data: | |
169 | p7->type=obj; | |
170 | if ((p7->d.data=ASN1_OCTET_STRING_new()) == NULL) | |
171 | goto err; | |
172 | break; | |
58964a49 RE |
173 | case NID_pkcs7_signedAndEnveloped: |
174 | p7->type=obj; | |
175 | if ((p7->d.signed_and_enveloped=PKCS7_SIGN_ENVELOPE_new()) | |
dfeab068 RE |
176 | == NULL) goto err; |
177 | ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1); | |
178 | /* p7->d.signed_and_enveloped->enc_data->content_type= | |
179 | OBJ_nid2obj(NID_pkcs7_encrypted);*/ | |
180 | ||
58964a49 | 181 | break; |
d02b48c6 | 182 | case NID_pkcs7_enveloped: |
dfeab068 RE |
183 | p7->type=obj; |
184 | if ((p7->d.enveloped=PKCS7_ENVELOPE_new()) | |
185 | == NULL) goto err; | |
186 | ASN1_INTEGER_set(p7->d.enveloped->version,0); | |
187 | break; | |
188 | case NID_pkcs7_digest: | |
d02b48c6 RE |
189 | case NID_pkcs7_encrypted: |
190 | default: | |
191 | PKCS7err(PKCS7_F_PKCS7_SET_TYPE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); | |
192 | goto err; | |
193 | } | |
194 | return(1); | |
195 | err: | |
196 | return(0); | |
197 | } | |
198 | ||
199 | int PKCS7_add_signer(p7,psi) | |
200 | PKCS7 *p7; | |
201 | PKCS7_SIGNER_INFO *psi; | |
202 | { | |
203 | int i,j,nid; | |
204 | X509_ALGOR *alg; | |
58964a49 RE |
205 | STACK *signer_sk; |
206 | STACK *md_sk; | |
d02b48c6 RE |
207 | |
208 | i=OBJ_obj2nid(p7->type); | |
58964a49 | 209 | switch (i) |
d02b48c6 | 210 | { |
58964a49 RE |
211 | case NID_pkcs7_signed: |
212 | signer_sk= p7->d.sign->signer_info; | |
213 | md_sk= p7->d.sign->md_algs; | |
214 | break; | |
215 | case NID_pkcs7_signedAndEnveloped: | |
216 | signer_sk= p7->d.signed_and_enveloped->signer_info; | |
217 | md_sk= p7->d.signed_and_enveloped->md_algs; | |
218 | break; | |
219 | default: | |
d02b48c6 RE |
220 | PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,PKCS7_R_WRONG_CONTENT_TYPE); |
221 | return(0); | |
222 | } | |
223 | ||
d02b48c6 RE |
224 | nid=OBJ_obj2nid(psi->digest_alg->algorithm); |
225 | ||
226 | /* If the digest is not currently listed, add it */ | |
227 | j=0; | |
58964a49 | 228 | for (i=0; i<sk_num(md_sk); i++) |
d02b48c6 | 229 | { |
58964a49 | 230 | alg=(X509_ALGOR *)sk_value(md_sk,i); |
d02b48c6 RE |
231 | if (OBJ_obj2nid(alg->algorithm) == nid) |
232 | { | |
233 | j=1; | |
234 | break; | |
235 | } | |
236 | } | |
237 | if (!j) /* we need to add another algorithm */ | |
238 | { | |
239 | alg=X509_ALGOR_new(); | |
240 | alg->algorithm=OBJ_nid2obj(nid); | |
58964a49 | 241 | sk_push(md_sk,(char *)alg); |
d02b48c6 RE |
242 | } |
243 | ||
58964a49 | 244 | sk_push(signer_sk,(char *)psi); |
d02b48c6 RE |
245 | return(1); |
246 | } | |
247 | ||
248 | int PKCS7_add_certificate(p7,x509) | |
249 | PKCS7 *p7; | |
250 | X509 *x509; | |
251 | { | |
252 | int i; | |
f73e07cf | 253 | STACK_OF(X509) **sk; |
d02b48c6 RE |
254 | |
255 | i=OBJ_obj2nid(p7->type); | |
58964a49 | 256 | switch (i) |
d02b48c6 | 257 | { |
58964a49 RE |
258 | case NID_pkcs7_signed: |
259 | sk= &(p7->d.sign->cert); | |
260 | break; | |
261 | case NID_pkcs7_signedAndEnveloped: | |
262 | sk= &(p7->d.signed_and_enveloped->cert); | |
263 | break; | |
264 | default: | |
265 | PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,PKCS7_R_WRONG_CONTENT_TYPE); | |
d02b48c6 RE |
266 | return(0); |
267 | } | |
268 | ||
58964a49 | 269 | if (*sk == NULL) |
f73e07cf | 270 | *sk=sk_X509_new_null(); |
d02b48c6 | 271 | CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509); |
f73e07cf | 272 | sk_X509_push(*sk,x509); |
d02b48c6 RE |
273 | return(1); |
274 | } | |
275 | ||
276 | int PKCS7_add_crl(p7,crl) | |
277 | PKCS7 *p7; | |
278 | X509_CRL *crl; | |
279 | { | |
280 | int i; | |
58964a49 RE |
281 | STACK **sk; |
282 | ||
d02b48c6 | 283 | i=OBJ_obj2nid(p7->type); |
58964a49 | 284 | switch (i) |
d02b48c6 | 285 | { |
58964a49 RE |
286 | case NID_pkcs7_signed: |
287 | sk= &(p7->d.sign->crl); | |
288 | break; | |
289 | case NID_pkcs7_signedAndEnveloped: | |
290 | sk= &(p7->d.signed_and_enveloped->crl); | |
291 | break; | |
292 | default: | |
293 | PKCS7err(PKCS7_F_PKCS7_ADD_CRL,PKCS7_R_WRONG_CONTENT_TYPE); | |
d02b48c6 RE |
294 | return(0); |
295 | } | |
296 | ||
58964a49 RE |
297 | if (*sk == NULL) |
298 | *sk=sk_new_null(); | |
d02b48c6 RE |
299 | |
300 | CRYPTO_add(&crl->references,1,CRYPTO_LOCK_X509_CRL); | |
58964a49 | 301 | sk_push(*sk,(char *)crl); |
d02b48c6 RE |
302 | return(1); |
303 | } | |
304 | ||
305 | int PKCS7_SIGNER_INFO_set(p7i,x509,pkey,dgst) | |
306 | PKCS7_SIGNER_INFO *p7i; | |
307 | X509 *x509; | |
308 | EVP_PKEY *pkey; | |
309 | EVP_MD *dgst; | |
310 | { | |
311 | /* We now need to add another PKCS7_SIGNER_INFO entry */ | |
312 | ASN1_INTEGER_set(p7i->version,1); | |
313 | X509_NAME_set(&p7i->issuer_and_serial->issuer, | |
314 | X509_get_issuer_name(x509)); | |
315 | ||
316 | /* because ASN1_INTEGER_set is used to set a 'long' we will do | |
317 | * things the ugly way. */ | |
318 | ASN1_INTEGER_free(p7i->issuer_and_serial->serial); | |
319 | p7i->issuer_and_serial->serial= | |
320 | ASN1_INTEGER_dup(X509_get_serialNumber(x509)); | |
321 | ||
322 | /* lets keep the pkey around for a while */ | |
323 | CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY); | |
324 | p7i->pkey=pkey; | |
325 | ||
326 | /* Set the algorithms */ | |
dfeab068 RE |
327 | if (pkey->type == EVP_PKEY_DSA) |
328 | p7i->digest_alg->algorithm=OBJ_nid2obj(NID_sha1); | |
329 | else | |
330 | p7i->digest_alg->algorithm=OBJ_nid2obj(EVP_MD_type(dgst)); | |
d02b48c6 RE |
331 | p7i->digest_enc_alg->algorithm=OBJ_nid2obj(EVP_MD_pkey_type(dgst)); |
332 | ||
333 | #if 1 | |
334 | if (p7i->digest_enc_alg->parameter != NULL) | |
335 | ASN1_TYPE_free(p7i->digest_enc_alg->parameter); | |
336 | if ((p7i->digest_enc_alg->parameter=ASN1_TYPE_new()) == NULL) | |
337 | goto err; | |
338 | p7i->digest_enc_alg->parameter->type=V_ASN1_NULL; | |
339 | #endif | |
340 | ||
d02b48c6 RE |
341 | return(1); |
342 | err: | |
343 | return(0); | |
344 | } | |
345 | ||
346 | PKCS7_SIGNER_INFO *PKCS7_add_signature(p7,x509,pkey,dgst) | |
347 | PKCS7 *p7; | |
348 | X509 *x509; | |
349 | EVP_PKEY *pkey; | |
350 | EVP_MD *dgst; | |
351 | { | |
352 | PKCS7_SIGNER_INFO *si; | |
353 | ||
354 | if ((si=PKCS7_SIGNER_INFO_new()) == NULL) goto err; | |
355 | if (!PKCS7_SIGNER_INFO_set(si,x509,pkey,dgst)) goto err; | |
356 | if (!PKCS7_add_signer(p7,si)) goto err; | |
357 | return(si); | |
358 | err: | |
359 | return(NULL); | |
360 | } | |
361 | ||
362 | STACK *PKCS7_get_signer_info(p7) | |
363 | PKCS7 *p7; | |
364 | { | |
365 | if (PKCS7_type_is_signed(p7)) | |
366 | { | |
367 | return(p7->d.sign->signer_info); | |
368 | } | |
dfeab068 RE |
369 | else if (PKCS7_type_is_signedAndEnveloped(p7)) |
370 | { | |
371 | return(p7->d.signed_and_enveloped->signer_info); | |
372 | } | |
d02b48c6 RE |
373 | else |
374 | return(NULL); | |
375 | } | |
376 | ||
58964a49 RE |
377 | PKCS7_RECIP_INFO *PKCS7_add_recipient(p7,x509) |
378 | PKCS7 *p7; | |
379 | X509 *x509; | |
380 | { | |
381 | PKCS7_RECIP_INFO *ri; | |
382 | ||
383 | if ((ri=PKCS7_RECIP_INFO_new()) == NULL) goto err; | |
384 | if (!PKCS7_RECIP_INFO_set(ri,x509)) goto err; | |
385 | if (!PKCS7_add_recipient_info(p7,ri)) goto err; | |
386 | return(ri); | |
387 | err: | |
388 | return(NULL); | |
389 | } | |
390 | ||
391 | int PKCS7_add_recipient_info(p7,ri) | |
392 | PKCS7 *p7; | |
393 | PKCS7_RECIP_INFO *ri; | |
394 | { | |
395 | int i; | |
396 | STACK *sk; | |
397 | ||
398 | i=OBJ_obj2nid(p7->type); | |
399 | switch (i) | |
400 | { | |
401 | case NID_pkcs7_signedAndEnveloped: | |
402 | sk= p7->d.signed_and_enveloped->recipientinfo; | |
403 | break; | |
dfeab068 RE |
404 | case NID_pkcs7_enveloped: |
405 | sk= p7->d.enveloped->recipientinfo; | |
406 | break; | |
58964a49 RE |
407 | default: |
408 | PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,PKCS7_R_WRONG_CONTENT_TYPE); | |
409 | return(0); | |
410 | } | |
411 | ||
412 | sk_push(sk,(char *)ri); | |
413 | return(1); | |
414 | } | |
415 | ||
416 | int PKCS7_RECIP_INFO_set(p7i,x509) | |
417 | PKCS7_RECIP_INFO *p7i; | |
418 | X509 *x509; | |
419 | { | |
420 | ASN1_INTEGER_set(p7i->version,0); | |
421 | X509_NAME_set(&p7i->issuer_and_serial->issuer, | |
422 | X509_get_issuer_name(x509)); | |
423 | ||
424 | ASN1_INTEGER_free(p7i->issuer_and_serial->serial); | |
425 | p7i->issuer_and_serial->serial= | |
426 | ASN1_INTEGER_dup(X509_get_serialNumber(x509)); | |
427 | ||
dfeab068 RE |
428 | X509_ALGOR_free(p7i->key_enc_algor); |
429 | p7i->key_enc_algor=(X509_ALGOR *)ASN1_dup(i2d_X509_ALGOR, | |
430 | (char *(*)())d2i_X509_ALGOR, | |
431 | (char *)x509->cert_info->key->algor); | |
432 | ||
58964a49 RE |
433 | CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509); |
434 | p7i->cert=x509; | |
435 | ||
436 | return(1); | |
437 | } | |
438 | ||
d02b48c6 RE |
439 | X509 *PKCS7_cert_from_signer_info(p7,si) |
440 | PKCS7 *p7; | |
441 | PKCS7_SIGNER_INFO *si; | |
442 | { | |
443 | if (PKCS7_type_is_signed(p7)) | |
444 | return(X509_find_by_issuer_and_serial(p7->d.sign->cert, | |
445 | si->issuer_and_serial->issuer, | |
446 | si->issuer_and_serial->serial)); | |
447 | else | |
448 | return(NULL); | |
449 | } | |
450 | ||
58964a49 RE |
451 | int PKCS7_set_cipher(p7,cipher) |
452 | PKCS7 *p7; | |
453 | EVP_CIPHER *cipher; | |
454 | { | |
455 | int i; | |
456 | PKCS7_ENC_CONTENT *ec; | |
457 | ||
458 | i=OBJ_obj2nid(p7->type); | |
459 | switch (i) | |
460 | { | |
461 | case NID_pkcs7_signedAndEnveloped: | |
462 | ec=p7->d.signed_and_enveloped->enc_data; | |
463 | break; | |
dfeab068 RE |
464 | case NID_pkcs7_enveloped: |
465 | ec=p7->d.enveloped->enc_data; | |
466 | break; | |
58964a49 RE |
467 | default: |
468 | PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_WRONG_CONTENT_TYPE); | |
469 | return(0); | |
470 | } | |
471 | ||
472 | ec->algorithm->algorithm=OBJ_nid2obj(EVP_CIPHER_nid(cipher)); | |
473 | return(ec->algorithm->algorithm != NULL); | |
474 | } | |
475 |