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1 | /* crypto/pkcs7/pk7_lib.c */ |
2 | /* Copyright (C) 1995-1997 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 "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: | |
101 | abort(); | |
102 | } | |
103 | return(ret); | |
104 | } | |
105 | ||
106 | int PKCS7_content_new(p7,type) | |
107 | PKCS7 *p7; | |
108 | int type; | |
109 | { | |
110 | PKCS7 *ret=NULL; | |
111 | ||
112 | if ((ret=PKCS7_new()) == NULL) goto err; | |
113 | if (!PKCS7_set_type(ret,type)) goto err; | |
114 | if (!PKCS7_set_content(p7,ret)) goto err; | |
115 | ||
116 | return(1); | |
117 | err: | |
118 | if (ret != NULL) PKCS7_free(ret); | |
119 | return(0); | |
120 | } | |
121 | ||
122 | int PKCS7_set_content(p7,p7_data) | |
123 | PKCS7 *p7; | |
124 | PKCS7 *p7_data; | |
125 | { | |
126 | int i; | |
127 | ||
128 | i=OBJ_obj2nid(p7->type); | |
129 | switch (i) | |
130 | { | |
131 | case NID_pkcs7_signed: | |
132 | if (p7->d.sign->contents != NULL) | |
133 | PKCS7_content_free(p7->d.sign->contents); | |
134 | p7->d.sign->contents=p7_data; | |
135 | break; | |
136 | case NID_pkcs7_digest: | |
137 | case NID_pkcs7_data: | |
138 | case NID_pkcs7_enveloped: | |
139 | case NID_pkcs7_signedAndEnveloped: | |
140 | case NID_pkcs7_encrypted: | |
141 | default: | |
142 | PKCS7err(PKCS7_F_PKCS7_SET_CONTENT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); | |
143 | goto err; | |
144 | } | |
145 | return(1); | |
146 | err: | |
147 | return(0); | |
148 | } | |
149 | ||
150 | int PKCS7_set_type(p7,type) | |
151 | PKCS7 *p7; | |
152 | int type; | |
153 | { | |
154 | ASN1_OBJECT *obj; | |
155 | ||
156 | PKCS7_content_free(p7); | |
157 | obj=OBJ_nid2obj(type); /* will not fail */ | |
158 | ||
159 | switch (type) | |
160 | { | |
161 | case NID_pkcs7_signed: | |
162 | p7->type=obj; | |
163 | if ((p7->d.sign=PKCS7_SIGNED_new()) == NULL) | |
164 | goto err; | |
165 | ASN1_INTEGER_set(p7->d.sign->version,1); | |
166 | break; | |
167 | case NID_pkcs7_data: | |
168 | p7->type=obj; | |
169 | if ((p7->d.data=ASN1_OCTET_STRING_new()) == NULL) | |
170 | goto err; | |
171 | break; | |
172 | case NID_pkcs7_digest: | |
173 | case NID_pkcs7_enveloped: | |
174 | case NID_pkcs7_signedAndEnveloped: | |
175 | case NID_pkcs7_encrypted: | |
176 | default: | |
177 | PKCS7err(PKCS7_F_PKCS7_SET_TYPE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); | |
178 | goto err; | |
179 | } | |
180 | return(1); | |
181 | err: | |
182 | return(0); | |
183 | } | |
184 | ||
185 | int PKCS7_add_signer(p7,psi) | |
186 | PKCS7 *p7; | |
187 | PKCS7_SIGNER_INFO *psi; | |
188 | { | |
189 | int i,j,nid; | |
190 | X509_ALGOR *alg; | |
191 | PKCS7_SIGNED *p7s; | |
192 | ||
193 | i=OBJ_obj2nid(p7->type); | |
194 | if (i != NID_pkcs7_signed) | |
195 | { | |
196 | PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,PKCS7_R_WRONG_CONTENT_TYPE); | |
197 | return(0); | |
198 | } | |
199 | ||
200 | p7s=p7->d.sign; | |
201 | ||
202 | nid=OBJ_obj2nid(psi->digest_alg->algorithm); | |
203 | ||
204 | /* If the digest is not currently listed, add it */ | |
205 | j=0; | |
206 | for (i=0; i<sk_num(p7s->md_algs); i++) | |
207 | { | |
208 | alg=(X509_ALGOR *)sk_value(p7s->md_algs,i); | |
209 | if (OBJ_obj2nid(alg->algorithm) == nid) | |
210 | { | |
211 | j=1; | |
212 | break; | |
213 | } | |
214 | } | |
215 | if (!j) /* we need to add another algorithm */ | |
216 | { | |
217 | alg=X509_ALGOR_new(); | |
218 | alg->algorithm=OBJ_nid2obj(nid); | |
219 | sk_push(p7s->md_algs,(char *)alg); | |
220 | } | |
221 | ||
222 | sk_push(p7s->signer_info,(char *)psi); | |
223 | return(1); | |
224 | } | |
225 | ||
226 | int PKCS7_add_certificate(p7,x509) | |
227 | PKCS7 *p7; | |
228 | X509 *x509; | |
229 | { | |
230 | int i; | |
231 | ||
232 | i=OBJ_obj2nid(p7->type); | |
233 | if (i != NID_pkcs7_signed) | |
234 | { | |
235 | PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,PKCS7_R_WRONG_CONTENT_TYPE); | |
236 | return(0); | |
237 | } | |
238 | ||
239 | if (p7->d.sign->cert == NULL) | |
240 | p7->d.sign->cert=sk_new_null(); | |
241 | CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509); | |
242 | sk_push(p7->d.sign->cert,(char *)x509); | |
243 | return(1); | |
244 | } | |
245 | ||
246 | int PKCS7_add_crl(p7,crl) | |
247 | PKCS7 *p7; | |
248 | X509_CRL *crl; | |
249 | { | |
250 | int i; | |
251 | i=OBJ_obj2nid(p7->type); | |
252 | if (i != NID_pkcs7_signed) | |
253 | { | |
254 | PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,PKCS7_R_WRONG_CONTENT_TYPE); | |
255 | return(0); | |
256 | } | |
257 | ||
258 | if (p7->d.sign->crl == NULL) | |
259 | p7->d.sign->crl=sk_new_null(); | |
260 | ||
261 | CRYPTO_add(&crl->references,1,CRYPTO_LOCK_X509_CRL); | |
262 | sk_push(p7->d.sign->crl,(char *)crl); | |
263 | return(1); | |
264 | } | |
265 | ||
266 | int PKCS7_SIGNER_INFO_set(p7i,x509,pkey,dgst) | |
267 | PKCS7_SIGNER_INFO *p7i; | |
268 | X509 *x509; | |
269 | EVP_PKEY *pkey; | |
270 | EVP_MD *dgst; | |
271 | { | |
272 | /* We now need to add another PKCS7_SIGNER_INFO entry */ | |
273 | ASN1_INTEGER_set(p7i->version,1); | |
274 | X509_NAME_set(&p7i->issuer_and_serial->issuer, | |
275 | X509_get_issuer_name(x509)); | |
276 | ||
277 | /* because ASN1_INTEGER_set is used to set a 'long' we will do | |
278 | * things the ugly way. */ | |
279 | ASN1_INTEGER_free(p7i->issuer_and_serial->serial); | |
280 | p7i->issuer_and_serial->serial= | |
281 | ASN1_INTEGER_dup(X509_get_serialNumber(x509)); | |
282 | ||
283 | /* lets keep the pkey around for a while */ | |
284 | CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY); | |
285 | p7i->pkey=pkey; | |
286 | ||
287 | /* Set the algorithms */ | |
288 | p7i->digest_alg->algorithm=OBJ_nid2obj(EVP_MD_type(dgst)); | |
289 | p7i->digest_enc_alg->algorithm=OBJ_nid2obj(EVP_MD_pkey_type(dgst)); | |
290 | ||
291 | #if 1 | |
292 | if (p7i->digest_enc_alg->parameter != NULL) | |
293 | ASN1_TYPE_free(p7i->digest_enc_alg->parameter); | |
294 | if ((p7i->digest_enc_alg->parameter=ASN1_TYPE_new()) == NULL) | |
295 | goto err; | |
296 | p7i->digest_enc_alg->parameter->type=V_ASN1_NULL; | |
297 | #endif | |
298 | ||
299 | ||
300 | return(1); | |
301 | err: | |
302 | return(0); | |
303 | } | |
304 | ||
305 | PKCS7_SIGNER_INFO *PKCS7_add_signature(p7,x509,pkey,dgst) | |
306 | PKCS7 *p7; | |
307 | X509 *x509; | |
308 | EVP_PKEY *pkey; | |
309 | EVP_MD *dgst; | |
310 | { | |
311 | PKCS7_SIGNER_INFO *si; | |
312 | ||
313 | if ((si=PKCS7_SIGNER_INFO_new()) == NULL) goto err; | |
314 | if (!PKCS7_SIGNER_INFO_set(si,x509,pkey,dgst)) goto err; | |
315 | if (!PKCS7_add_signer(p7,si)) goto err; | |
316 | return(si); | |
317 | err: | |
318 | return(NULL); | |
319 | } | |
320 | ||
321 | STACK *PKCS7_get_signer_info(p7) | |
322 | PKCS7 *p7; | |
323 | { | |
324 | if (PKCS7_type_is_signed(p7)) | |
325 | { | |
326 | return(p7->d.sign->signer_info); | |
327 | } | |
328 | else | |
329 | return(NULL); | |
330 | } | |
331 | ||
332 | X509 *PKCS7_cert_from_signer_info(p7,si) | |
333 | PKCS7 *p7; | |
334 | PKCS7_SIGNER_INFO *si; | |
335 | { | |
336 | if (PKCS7_type_is_signed(p7)) | |
337 | return(X509_find_by_issuer_and_serial(p7->d.sign->cert, | |
338 | si->issuer_and_serial->issuer, | |
339 | si->issuer_and_serial->serial)); | |
340 | else | |
341 | return(NULL); | |
342 | } | |
343 |