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diff --git a/src/lib/libcrypto/x509/x509_req.c b/src/lib/libcrypto/x509/x509_req.c
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1/* $OpenBSD: x509_req.c,v 1.43 2024/08/31 10:16:52 tb Exp $ */
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
61#include <openssl/opensslconf.h>
62
63#include <openssl/asn1.h>
64#include <openssl/asn1t.h>
65#include <openssl/bn.h>
66#include <openssl/buffer.h>
67#include <openssl/err.h>
68#include <openssl/evp.h>
69#include <openssl/objects.h>
70#include <openssl/pem.h>
71#include <openssl/x509.h>
72
73#include "asn1_local.h"
74#include "evp_local.h"
75#include "x509_local.h"
76
77X509_REQ *
78X509_to_X509_REQ(X509 *x509, EVP_PKEY *signing_key, const EVP_MD *signing_md)
79{
80 X509_REQ *req;
81 X509_NAME *subject;
82 EVP_PKEY *public_key;
83
84 if ((req = X509_REQ_new()) == NULL) {
85 X509error(ERR_R_MALLOC_FAILURE);
86 goto err;
87 }
88
89 if ((subject = X509_get_subject_name(x509)) == NULL)
90 goto err;
91 if (!X509_REQ_set_subject_name(req, subject))
92 goto err;
93
94 if ((public_key = X509_get0_pubkey(x509)) == NULL)
95 goto err;
96 if (!X509_REQ_set_pubkey(req, public_key))
97 goto err;
98
99 if (signing_key != NULL) {
100 if (!X509_REQ_sign(req, signing_key, signing_md))
101 goto err;
102 }
103
104 return req;
105
106 err:
107 X509_REQ_free(req);
108
109 return NULL;
110}
111LCRYPTO_ALIAS(X509_to_X509_REQ);
112
113EVP_PKEY *
114X509_REQ_get_pubkey(X509_REQ *req)
115{
116 if (req == NULL || req->req_info == NULL)
117 return NULL;
118 return X509_PUBKEY_get(req->req_info->pubkey);
119}
120LCRYPTO_ALIAS(X509_REQ_get_pubkey);
121
122EVP_PKEY *
123X509_REQ_get0_pubkey(X509_REQ *req)
124{
125 if (req == NULL || req->req_info == NULL)
126 return NULL;
127 return X509_PUBKEY_get0(req->req_info->pubkey);
128}
129LCRYPTO_ALIAS(X509_REQ_get0_pubkey);
130
131int
132X509_REQ_check_private_key(X509_REQ *req, EVP_PKEY *pkey)
133{
134 EVP_PKEY *req_pubkey = NULL;
135 int ret;
136
137 if ((req_pubkey = X509_REQ_get0_pubkey(req)) == NULL)
138 return 0;
139
140 if ((ret = EVP_PKEY_cmp(req_pubkey, pkey)) == 1)
141 return 1;
142
143 switch (ret) {
144 case 0:
145 X509error(X509_R_KEY_VALUES_MISMATCH);
146 return 0;
147 case -1:
148 X509error(X509_R_KEY_TYPE_MISMATCH);
149 return 0;
150 case -2:
151#ifndef OPENSSL_NO_EC
152 if (pkey->type == EVP_PKEY_EC) {
153 X509error(ERR_R_EC_LIB);
154 return 0;
155 }
156#endif
157#ifndef OPENSSL_NO_DH
158 if (pkey->type == EVP_PKEY_DH) {
159 /* No idea */
160 X509error(X509_R_CANT_CHECK_DH_KEY);
161 return 0;
162 }
163#endif
164 X509error(X509_R_UNKNOWN_KEY_TYPE);
165 return 0;
166 }
167
168 return 0;
169}
170LCRYPTO_ALIAS(X509_REQ_check_private_key);
171
172int
173X509_REQ_extension_nid(int nid)
174{
175 return nid == NID_ext_req || nid == NID_ms_ext_req;
176}
177LCRYPTO_ALIAS(X509_REQ_extension_nid);
178
179STACK_OF(X509_EXTENSION) *
180X509_REQ_get_extensions(X509_REQ *req)
181{
182 X509_ATTRIBUTE *attr;
183 ASN1_TYPE *ext = NULL;
184 int idx;
185
186 if (req == NULL || req->req_info == NULL)
187 return NULL;
188
189 if ((idx = X509_REQ_get_attr_by_NID(req, NID_ext_req, -1)) == -1)
190 idx = X509_REQ_get_attr_by_NID(req, NID_ms_ext_req, -1);
191 if (idx == -1)
192 return NULL;
193
194 if ((attr = X509_REQ_get_attr(req, idx)) == NULL)
195 return NULL;
196 if ((ext = X509_ATTRIBUTE_get0_type(attr, 0)) == NULL)
197 return NULL;
198
199 return ASN1_TYPE_unpack_sequence(&X509_EXTENSIONS_it, ext);
200}
201LCRYPTO_ALIAS(X509_REQ_get_extensions);
202
203/*
204 * Add a STACK_OF extensions to a certificate request: allow alternative OIDs
205 * in case we want to create a non-standard one.
206 */
207
208int
209X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
210 int nid)
211{
212 unsigned char *ext = NULL;
213 int extlen;
214 int ret;
215
216 if ((extlen = i2d_X509_EXTENSIONS(exts, &ext)) <= 0)
217 return 0;
218
219 ret = X509_REQ_add1_attr_by_NID(req, nid, V_ASN1_SEQUENCE, ext, extlen);
220 free(ext);
221
222 return ret;
223}
224LCRYPTO_ALIAS(X509_REQ_add_extensions_nid);
225
226/* This is the normal usage: use the "official" OID */
227int
228X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
229{
230 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
231}
232LCRYPTO_ALIAS(X509_REQ_add_extensions);
233
234/* Request attribute functions */
235
236int
237X509_REQ_get_attr_count(const X509_REQ *req)
238{
239 return sk_X509_ATTRIBUTE_num(req->req_info->attributes);
240}
241LCRYPTO_ALIAS(X509_REQ_get_attr_count);
242
243int
244X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
245{
246 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos);
247}
248LCRYPTO_ALIAS(X509_REQ_get_attr_by_NID);
249
250int
251X509_REQ_get_attr_by_OBJ(const X509_REQ *req, const ASN1_OBJECT *obj,
252 int lastpos)
253{
254 return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos);
255}
256LCRYPTO_ALIAS(X509_REQ_get_attr_by_OBJ);
257
258X509_ATTRIBUTE *
259X509_REQ_get_attr(const X509_REQ *req, int loc)
260{
261 return sk_X509_ATTRIBUTE_value(req->req_info->attributes, loc);
262}
263LCRYPTO_ALIAS(X509_REQ_get_attr);
264
265X509_ATTRIBUTE *
266X509_REQ_delete_attr(X509_REQ *req, int loc)
267{
268 return sk_X509_ATTRIBUTE_delete(req->req_info->attributes, loc);
269}
270LCRYPTO_ALIAS(X509_REQ_delete_attr);
271
272int
273X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
274{
275 if (X509at_add1_attr(&req->req_info->attributes, attr))
276 return 1;
277 return 0;
278}
279LCRYPTO_ALIAS(X509_REQ_add1_attr);
280
281int
282X509_REQ_add1_attr_by_OBJ(X509_REQ *req, const ASN1_OBJECT *obj, int type,
283 const unsigned char *bytes, int len)
284{
285 if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj,
286 type, bytes, len))
287 return 1;
288 return 0;
289}
290LCRYPTO_ALIAS(X509_REQ_add1_attr_by_OBJ);
291
292int
293X509_REQ_add1_attr_by_NID(X509_REQ *req, int nid, int type,
294 const unsigned char *bytes, int len)
295{
296 if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid,
297 type, bytes, len))
298 return 1;
299 return 0;
300}
301LCRYPTO_ALIAS(X509_REQ_add1_attr_by_NID);
302
303int
304X509_REQ_add1_attr_by_txt(X509_REQ *req, const char *attrname, int type,
305 const unsigned char *bytes, int len)
306{
307 if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname,
308 type, bytes, len))
309 return 1;
310 return 0;
311}
312LCRYPTO_ALIAS(X509_REQ_add1_attr_by_txt);
313
314int
315i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp)
316{
317 req->req_info->enc.modified = 1;
318 return i2d_X509_REQ_INFO(req->req_info, pp);
319}
320LCRYPTO_ALIAS(i2d_re_X509_REQ_tbs);
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