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/buf.h>
62#include <openssl/err.h>
63#include <openssl/evp.h>
64#include <openssl/mem.h>
65#include <openssl/obj.h>
66#include <openssl/pem.h>
67#include <openssl/x509.h>
68
69X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
70{
71 X509_REQ *ret;
72 X509_REQ_INFO *ri;
73 int i;
74 EVP_PKEY *pktmp;
75
76 ret = X509_REQ_new();
77 if (ret == NULL) {
78 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
79 goto err;
80 }
81
82 ri = ret->req_info;
83
84 ri->version->length = 1;
85 ri->version->data = (unsigned char *)OPENSSL_malloc(1);
86 if (ri->version->data == NULL)
87 goto err;
88 ri->version->data[0] = 0; /* version == 0 */
89
90 if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x)))
91 goto err;
92
93 pktmp = X509_get_pubkey(x);
94 if (pktmp == NULL)
95 goto err;
96 i = X509_REQ_set_pubkey(ret, pktmp);
97 EVP_PKEY_free(pktmp);
98 if (!i)
99 goto err;
100
101 if (pkey != NULL) {
102 if (!X509_REQ_sign(ret, pkey, md))
103 goto err;
104 }
105 return (ret);
106 err:
107 X509_REQ_free(ret);
108 return (NULL);
109}
110
111EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
112{
113 if ((req == NULL) || (req->req_info == NULL))
114 return (NULL);
115 return (X509_PUBKEY_get(req->req_info->pubkey));
116}
117
118int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k)
119{
120 EVP_PKEY *xk = NULL;
121 int ok = 0;
122
123 xk = X509_REQ_get_pubkey(x);
124 switch (EVP_PKEY_cmp(xk, k)) {
125 case 1:
126 ok = 1;
127 break;
128 case 0:
129 OPENSSL_PUT_ERROR(X509, X509_R_KEY_VALUES_MISMATCH);
130 break;
131 case -1:
132 OPENSSL_PUT_ERROR(X509, X509_R_KEY_TYPE_MISMATCH);
133 break;
134 case -2:
135 if (k->type == EVP_PKEY_EC) {
136 OPENSSL_PUT_ERROR(X509, ERR_R_EC_LIB);
137 break;
138 }
139 if (k->type == EVP_PKEY_DH) {
140 /* No idea */
141 OPENSSL_PUT_ERROR(X509, X509_R_CANT_CHECK_DH_KEY);
142 break;
143 }
144 OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_KEY_TYPE);
145 }
146
147 EVP_PKEY_free(xk);
148 return (ok);
149}
150
151/*
152 * It seems several organisations had the same idea of including a list of
153 * extensions in a certificate request. There are at least two OIDs that are
154 * used and there may be more: so the list is configurable.
155 */
156
157static const int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };
158
159static const int *ext_nids = ext_nid_list;
160
161int X509_REQ_extension_nid(int req_nid)
162{
163 int i, nid;
164 for (i = 0;; i++) {
165 nid = ext_nids[i];
166 if (nid == NID_undef)
167 return 0;
168 else if (req_nid == nid)
169 return 1;
170 }
171}
172
173const int *X509_REQ_get_extension_nids(void)
174{
175 return ext_nids;
176}
177
178void X509_REQ_set_extension_nids(const int *nids)
179{
180 ext_nids = nids;
181}
182
183STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
184{
185 X509_ATTRIBUTE *attr;
186 ASN1_TYPE *ext = NULL;
187 int idx;
188 const int *pnid;
189 const unsigned char *p;
190
191 if ((req == NULL) || (req->req_info == NULL) || !ext_nids)
192 return (NULL);
193 for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
194 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
195 if (idx == -1)
196 continue;
197 attr = X509_REQ_get_attr(req, idx);
198 if (attr->single)
199 ext = attr->value.single;
200 else if (sk_ASN1_TYPE_num(attr->value.set))
201 ext = sk_ASN1_TYPE_value(attr->value.set, 0);
202 break;
203 }
204 if (!ext || (ext->type != V_ASN1_SEQUENCE))
205 return NULL;
206 p = ext->value.sequence->data;
207 return (STACK_OF(X509_EXTENSION) *)
208 ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
209 ASN1_ITEM_rptr(X509_EXTENSIONS));
210}
211
212/*
213 * Add a STACK_OF extensions to a certificate request: allow alternative OIDs
214 * in case we want to create a non standard one.
215 */
216
217int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
218 int nid)
219{
220 ASN1_TYPE *at = NULL;
221 X509_ATTRIBUTE *attr = NULL;
222 if (!(at = ASN1_TYPE_new()) || !(at->value.sequence = ASN1_STRING_new()))
223 goto err;
224
225 at->type = V_ASN1_SEQUENCE;
226 /* Generate encoding of extensions */
227 at->value.sequence->length =
228 ASN1_item_i2d((ASN1_VALUE *)exts,
229 &at->value.sequence->data,
230 ASN1_ITEM_rptr(X509_EXTENSIONS));
231 if (!(attr = X509_ATTRIBUTE_new()))
232 goto err;
233 if (!(attr->value.set = sk_ASN1_TYPE_new_null()))
234 goto err;
235 if (!sk_ASN1_TYPE_push(attr->value.set, at))
236 goto err;
237 at = NULL;
238 attr->single = 0;
239 attr->object = (ASN1_OBJECT *)OBJ_nid2obj(nid);
240 if (!req->req_info->attributes) {
241 if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null()))
242 goto err;
243 }
244 if (!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr))
245 goto err;
246 return 1;
247 err:
248 X509_ATTRIBUTE_free(attr);
249 ASN1_TYPE_free(at);
250 return 0;
251}
252
253/* This is the normal usage: use the "official" OID */
254int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
255{
256 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
257}
258
259/* Request attribute functions */
260
261int X509_REQ_get_attr_count(const X509_REQ *req)
262{
263 return X509at_get_attr_count(req->req_info->attributes);
264}
265
266int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
267{
268 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos);
269}
270
271int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
272 int lastpos)
273{
274 return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos);
275}
276
277X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
278{
279 return X509at_get_attr(req->req_info->attributes, loc);
280}
281
282X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
283{
284 return X509at_delete_attr(req->req_info->attributes, loc);
285}
286
287int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
288{
289 if (X509at_add1_attr(&req->req_info->attributes, attr))
290 return 1;
291 return 0;
292}
293
294int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
295 const ASN1_OBJECT *obj, int type,
296 const unsigned char *bytes, int len)
297{
298 if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj,
299 type, bytes, len))
300 return 1;
301 return 0;
302}
303
304int X509_REQ_add1_attr_by_NID(X509_REQ *req,
305 int nid, int type,
306 const unsigned char *bytes, int len)
307{
308 if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid,
309 type, bytes, len))
310 return 1;
311 return 0;
312}
313
314int X509_REQ_add1_attr_by_txt(X509_REQ *req,
315 const char *attrname, int type,
316 const unsigned char *bytes, int len)
317{
318 if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname,
319 type, bytes, len))
320 return 1;
321 return 0;
322}
323
324void X509_REQ_get0_signature(const X509_REQ *req, const ASN1_BIT_STRING **psig,
325 const X509_ALGOR **palg)
326{
327 if (psig != NULL)
328 *psig = req->signature;
329 if (palg != NULL)
330 *palg = req->sig_alg;
331}
332
333int X509_REQ_get_signature_nid(const X509_REQ *req)
334{
335 return OBJ_obj2nid(req->sig_alg->algorithm);
336}
337
338int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp)
339{
340 req->req_info->enc.modified = 1;
341 return i2d_X509_REQ_INFO(req->req_info, pp);
342}
343