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 #include <openssl/asn1.h>
59 #include <openssl/asn1t.h>
60 #include <openssl/bn.h>
61 #include <openssl/err.h>
62 #include <openssl/evp.h>
63 #include <openssl/mem.h>
64 #include <openssl/obj.h>
65 #include <openssl/pem.h>
66 #include <openssl/x509.h>
67
X509_to_X509_REQ(X509 * x,EVP_PKEY * pkey,const EVP_MD * md)68 X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
69 {
70 X509_REQ *ret;
71 X509_REQ_INFO *ri;
72 int i;
73 EVP_PKEY *pktmp;
74
75 ret = X509_REQ_new();
76 if (ret == NULL) {
77 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
78 goto err;
79 }
80
81 ri = ret->req_info;
82
83 ri->version->length = 1;
84 ri->version->data = (unsigned char *)OPENSSL_malloc(1);
85 if (ri->version->data == NULL)
86 goto err;
87 ri->version->data[0] = 0; /* version == 0 */
88
89 if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x)))
90 goto err;
91
92 pktmp = X509_get_pubkey(x);
93 if (pktmp == NULL)
94 goto err;
95 i = X509_REQ_set_pubkey(ret, pktmp);
96 EVP_PKEY_free(pktmp);
97 if (!i)
98 goto err;
99
100 if (pkey != NULL) {
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
X509_REQ_get_pubkey(X509_REQ * req)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
X509_REQ_check_private_key(X509_REQ * x,EVP_PKEY * k)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 case 1:
125 ok = 1;
126 break;
127 case 0:
128 OPENSSL_PUT_ERROR(X509, X509_R_KEY_VALUES_MISMATCH);
129 break;
130 case -1:
131 OPENSSL_PUT_ERROR(X509, X509_R_KEY_TYPE_MISMATCH);
132 break;
133 case -2:
134 if (k->type == EVP_PKEY_EC) {
135 OPENSSL_PUT_ERROR(X509, ERR_R_EC_LIB);
136 break;
137 }
138 if (k->type == EVP_PKEY_DH) {
139 /* No idea */
140 OPENSSL_PUT_ERROR(X509, X509_R_CANT_CHECK_DH_KEY);
141 break;
142 }
143 OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_KEY_TYPE);
144 }
145
146 EVP_PKEY_free(xk);
147 return (ok);
148 }
149
150 /*
151 * It seems several organisations had the same idea of including a list of
152 * extensions in a certificate request. There are at least two OIDs that are
153 * used and there may be more: so the list is configurable.
154 */
155
156 static const int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };
157
158 static const int *ext_nids = ext_nid_list;
159
X509_REQ_extension_nid(int req_nid)160 int X509_REQ_extension_nid(int req_nid)
161 {
162 int i, nid;
163 for (i = 0;; i++) {
164 nid = ext_nids[i];
165 if (nid == NID_undef)
166 return 0;
167 else if (req_nid == nid)
168 return 1;
169 }
170 }
171
X509_REQ_get_extension_nids(void)172 const int *X509_REQ_get_extension_nids(void)
173 {
174 return ext_nids;
175 }
176
X509_REQ_set_extension_nids(const int * nids)177 void X509_REQ_set_extension_nids(const int *nids)
178 {
179 ext_nids = nids;
180 }
181
STACK_OF(X509_EXTENSION)182 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
183 {
184 X509_ATTRIBUTE *attr;
185 ASN1_TYPE *ext = NULL;
186 int idx;
187 const int *pnid;
188 const unsigned char *p;
189
190 if ((req == NULL) || (req->req_info == NULL) || !ext_nids)
191 return (NULL);
192 for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
193 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
194 if (idx == -1)
195 continue;
196 attr = X509_REQ_get_attr(req, idx);
197 if (attr->single)
198 ext = attr->value.single;
199 else if (sk_ASN1_TYPE_num(attr->value.set))
200 ext = sk_ASN1_TYPE_value(attr->value.set, 0);
201 break;
202 }
203 if (!ext || (ext->type != V_ASN1_SEQUENCE))
204 return NULL;
205 p = ext->value.sequence->data;
206 return (STACK_OF(X509_EXTENSION) *)
207 ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
208 ASN1_ITEM_rptr(X509_EXTENSIONS));
209 }
210
211 /*
212 * Add a STACK_OF extensions to a certificate request: allow alternative OIDs
213 * in case we want to create a non standard one.
214 */
215
X509_REQ_add_extensions_nid(X509_REQ * req,STACK_OF (X509_EXTENSION)* exts,int nid)216 int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
217 int nid)
218 {
219 ASN1_TYPE *at = NULL;
220 X509_ATTRIBUTE *attr = NULL;
221 if (!(at = ASN1_TYPE_new()) || !(at->value.sequence = ASN1_STRING_new()))
222 goto err;
223
224 at->type = V_ASN1_SEQUENCE;
225 /* Generate encoding of extensions */
226 at->value.sequence->length =
227 ASN1_item_i2d((ASN1_VALUE *)exts,
228 &at->value.sequence->data,
229 ASN1_ITEM_rptr(X509_EXTENSIONS));
230 if (!(attr = X509_ATTRIBUTE_new()))
231 goto err;
232 if (!(attr->value.set = sk_ASN1_TYPE_new_null()))
233 goto err;
234 if (!sk_ASN1_TYPE_push(attr->value.set, at))
235 goto err;
236 at = NULL;
237 attr->single = 0;
238 attr->object = (ASN1_OBJECT *)OBJ_nid2obj(nid);
239 if (!req->req_info->attributes) {
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))
244 goto err;
245 return 1;
246 err:
247 X509_ATTRIBUTE_free(attr);
248 ASN1_TYPE_free(at);
249 return 0;
250 }
251
252 /* This is the normal usage: use the "official" OID */
X509_REQ_add_extensions(X509_REQ * req,STACK_OF (X509_EXTENSION)* exts)253 int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
254 {
255 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
256 }
257
258 /* Request attribute functions */
259
X509_REQ_get_attr_count(const X509_REQ * req)260 int X509_REQ_get_attr_count(const X509_REQ *req)
261 {
262 return X509at_get_attr_count(req->req_info->attributes);
263 }
264
X509_REQ_get_attr_by_NID(const X509_REQ * req,int nid,int lastpos)265 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
266 {
267 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos);
268 }
269
X509_REQ_get_attr_by_OBJ(const X509_REQ * req,ASN1_OBJECT * obj,int lastpos)270 int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
271 int lastpos)
272 {
273 return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos);
274 }
275
X509_REQ_get_attr(const X509_REQ * req,int loc)276 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
277 {
278 return X509at_get_attr(req->req_info->attributes, loc);
279 }
280
X509_REQ_delete_attr(X509_REQ * req,int loc)281 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
282 {
283 return X509at_delete_attr(req->req_info->attributes, loc);
284 }
285
X509_REQ_add1_attr(X509_REQ * req,X509_ATTRIBUTE * attr)286 int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
287 {
288 if (X509at_add1_attr(&req->req_info->attributes, attr))
289 return 1;
290 return 0;
291 }
292
X509_REQ_add1_attr_by_OBJ(X509_REQ * req,const ASN1_OBJECT * obj,int type,const unsigned char * bytes,int len)293 int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
294 const ASN1_OBJECT *obj, int type,
295 const unsigned char *bytes, int len)
296 {
297 if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj,
298 type, bytes, len))
299 return 1;
300 return 0;
301 }
302
X509_REQ_add1_attr_by_NID(X509_REQ * req,int nid,int type,const unsigned char * bytes,int len)303 int X509_REQ_add1_attr_by_NID(X509_REQ *req,
304 int nid, int type,
305 const unsigned char *bytes, int len)
306 {
307 if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid,
308 type, bytes, len))
309 return 1;
310 return 0;
311 }
312
X509_REQ_add1_attr_by_txt(X509_REQ * req,const char * attrname,int type,const unsigned char * bytes,int len)313 int X509_REQ_add1_attr_by_txt(X509_REQ *req,
314 const char *attrname, int type,
315 const unsigned char *bytes, int len)
316 {
317 if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname,
318 type, bytes, len))
319 return 1;
320 return 0;
321 }
322
X509_REQ_get0_signature(const X509_REQ * req,const ASN1_BIT_STRING ** psig,const X509_ALGOR ** palg)323 void X509_REQ_get0_signature(const X509_REQ *req, const ASN1_BIT_STRING **psig,
324 const X509_ALGOR **palg)
325 {
326 if (psig != NULL)
327 *psig = req->signature;
328 if (palg != NULL)
329 *palg = req->sig_alg;
330 }
331
X509_REQ_get_signature_nid(const X509_REQ * req)332 int X509_REQ_get_signature_nid(const X509_REQ *req)
333 {
334 return OBJ_obj2nid(req->sig_alg->algorithm);
335 }
336
i2d_re_X509_REQ_tbs(X509_REQ * req,unsigned char ** pp)337 int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp)
338 {
339 req->req_info->enc.modified = 1;
340 return i2d_X509_REQ_INFO(req->req_info, pp);
341 }
342