1 /* crypto/x509/x509_req.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/bn.h>
62 #include <openssl/evp.h>
63 #include <openssl/asn1.h>
64 #include <openssl/asn1t.h>
65 #include <openssl/x509.h>
66 #include <openssl/objects.h>
67 #include <openssl/buffer.h>
68 #include <openssl/pem.h>
69
70 X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
71 {
72 X509_REQ *ret;
73 X509_REQ_INFO *ri;
74 int i;
75 EVP_PKEY *pktmp;
76
77 ret=X509_REQ_new();
78 if (ret == NULL)
79 {
80 X509err(X509_F_X509_TO_X509_REQ,ERR_R_MALLOC_FAILURE);
81 goto err;
82 }
83
84 ri=ret->req_info;
85
86 ri->version->length=1;
87 ri->version->data=(unsigned char *)OPENSSL_malloc(1);
88 if (ri->version->data == NULL) goto err;
89 ri->version->data[0]=0; /* version == 0 */
90
91 if (!X509_REQ_set_subject_name(ret,X509_get_subject_name(x)))
92 goto err;
93
94 pktmp = X509_get_pubkey(x);
95 i=X509_REQ_set_pubkey(ret,pktmp);
96 EVP_PKEY_free(pktmp);
97 if (!i) goto err;
98
99 if (pkey != NULL)
100 {
101 if (!X509_REQ_sign(ret,pkey,md))
102 goto err;
103 }
104 return(ret);
105 err:
106 X509_REQ_free(ret);
107 return(NULL);
108 }
109
110 EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
111 {
112 if ((req == NULL) || (req->req_info == NULL))
113 return(NULL);
114 return(X509_PUBKEY_get(req->req_info->pubkey));
115 }
116
117 int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k)
118 {
119 EVP_PKEY *xk=NULL;
120 int ok=0;
121
122 xk=X509_REQ_get_pubkey(x);
123 switch (EVP_PKEY_cmp(xk, k))
124 {
125 case 1:
126 ok=1;
127 break;
128 case 0:
129 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH);
130 break;
131 case -1:
132 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_KEY_TYPE_MISMATCH);
133 break;
134 case -2:
135 #ifndef OPENSSL_NO_EC
136 if (k->type == EVP_PKEY_EC)
137 {
138 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
139 break;
140 }
141 #endif
142 #ifndef OPENSSL_NO_DH
143 if (k->type == EVP_PKEY_DH)
144 {
145 /* No idea */
146 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_CANT_CHECK_DH_KEY);
147 break;
148 }
149 #endif
150 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_UNKNOWN_KEY_TYPE);
151 }
152
153 EVP_PKEY_free(xk);
154 return(ok);
155 }
156
157 /* It seems several organisations had the same idea of including a list of
158 * extensions in a certificate request. There are at least two OIDs that are
159 * used and there may be more: so the list is configurable.
160 */
161
162 static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef};
163
164 static int *ext_nids = ext_nid_list;
165
166 int X509_REQ_extension_nid(int req_nid)
167 {
168 int i, nid;
169 for(i = 0; ; i++) {
170 nid = ext_nids[i];
171 if(nid == NID_undef) return 0;
172 else if (req_nid == nid) return 1;
173 }
174 }
175
176 int *X509_REQ_get_extension_nids(void)
177 {
178 return ext_nids;
179 }
180
181 void X509_REQ_set_extension_nids(int *nids)
182 {
183 ext_nids = nids;
184 }
185
186 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
187 {
188 X509_ATTRIBUTE *attr;
189 ASN1_TYPE *ext = NULL;
190 int idx, *pnid;
191 const unsigned char *p;
192
193 if ((req == NULL) || (req->req_info == NULL) || !ext_nids)
194 return(NULL);
195 for (pnid = ext_nids; *pnid != NID_undef; pnid++)
196 {
197 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
198 if (idx == -1)
199 continue;
200 attr = X509_REQ_get_attr(req, idx);
201 if(attr->single) ext = attr->value.single;
202 else if(sk_ASN1_TYPE_num(attr->value.set))
203 ext = sk_ASN1_TYPE_value(attr->value.set, 0);
204 break;
205 }
206 if(!ext || (ext->type != V_ASN1_SEQUENCE))
207 return NULL;
208 p = ext->value.sequence->data;
209 return (STACK_OF(X509_EXTENSION) *)
210 ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
211 ASN1_ITEM_rptr(X509_EXTENSIONS));
212 }
213
214 /* Add a STACK_OF extensions to a certificate request: allow alternative OIDs
215 * in case we want to create a non standard one.
216 */
217
218 int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
219 int nid)
220 {
221 ASN1_TYPE *at = NULL;
222 X509_ATTRIBUTE *attr = NULL;
223 if(!(at = ASN1_TYPE_new()) ||
224 !(at->value.sequence = ASN1_STRING_new())) goto err;
225
226 at->type = V_ASN1_SEQUENCE;
227 /* Generate encoding of extensions */
228 at->value.sequence->length =
229 ASN1_item_i2d((ASN1_VALUE *)exts,
230 &at->value.sequence->data,
231 ASN1_ITEM_rptr(X509_EXTENSIONS));
232 if(!(attr = X509_ATTRIBUTE_new())) goto err;
233 if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err;
234 if(!sk_ASN1_TYPE_push(attr->value.set, at)) goto err;
235 at = NULL;
236 attr->single = 0;
237 attr->object = OBJ_nid2obj(nid);
238 if (!req->req_info->attributes)
239 {
240 if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null()))
241 goto err;
242 }
243 if(!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr)) goto err;
244 return 1;
245 err:
246 X509_ATTRIBUTE_free(attr);
247 ASN1_TYPE_free(at);
248 return 0;
249 }
250 /* This is the normal usage: use the "official" OID */
251 int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
252 {
253 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
254 }
255
256 /* Request attribute functions */
257
258 int X509_REQ_get_attr_count(const X509_REQ *req)
259 {
260 return X509at_get_attr_count(req->req_info->attributes);
261 }
262
263 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid,
264 int lastpos)
265 {
266 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos);
267 }
268
269 int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
270 int lastpos)
271 {
272 return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos);
273 }
274
275 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
276 {
277 return X509at_get_attr(req->req_info->attributes, loc);
278 }
279
280 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
281 {
282 return X509at_delete_attr(req->req_info->attributes, loc);
283 }
284
285 int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
286 {
287 if(X509at_add1_attr(&req->req_info->attributes, attr)) return 1;
288 return 0;
289 }
290
291 int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
292 const ASN1_OBJECT *obj, int type,
293 const unsigned char *bytes, int len)
294 {
295 if(X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj,
296 type, bytes, len)) return 1;
297 return 0;
298 }
299
300 int X509_REQ_add1_attr_by_NID(X509_REQ *req,
301 int nid, int type,
302 const unsigned char *bytes, int len)
303 {
304 if(X509at_add1_attr_by_NID(&req->req_info->attributes, nid,
305 type, bytes, len)) return 1;
306 return 0;
307 }
308
309 int X509_REQ_add1_attr_by_txt(X509_REQ *req,
310 const char *attrname, int type,
311 const unsigned char *bytes, int len)
312 {
313 if(X509at_add1_attr_by_txt(&req->req_info->attributes, attrname,
314 type, bytes, len)) return 1;
315 return 0;
316 }