1 /* $OpenBSD: x509_req.c,v 1.33 2023/04/25 09:46:36 job 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 "evp_local.h" 74 #include "x509_local.h" 75 76 X509_REQ * 77 X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md) 78 { 79 X509_REQ *ret; 80 int i; 81 EVP_PKEY *pktmp; 82 83 ret = X509_REQ_new(); 84 if (ret == NULL) { 85 X509error(ERR_R_MALLOC_FAILURE); 86 goto err; 87 } 88 89 if (!X509_REQ_set_version(ret, 0)) 90 goto err; 91 92 if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x))) 93 goto err; 94 95 if ((pktmp = X509_get_pubkey(x)) == NULL) 96 goto err; 97 98 i = X509_REQ_set_pubkey(ret, pktmp); 99 EVP_PKEY_free(pktmp); 100 if (!i) 101 goto err; 102 103 if (pkey != NULL) { 104 if (!X509_REQ_sign(ret, pkey, md)) 105 goto err; 106 } 107 return (ret); 108 109 err: 110 X509_REQ_free(ret); 111 return (NULL); 112 } 113 LCRYPTO_ALIAS(X509_to_X509_REQ); 114 115 EVP_PKEY * 116 X509_REQ_get_pubkey(X509_REQ *req) 117 { 118 if ((req == NULL) || (req->req_info == NULL)) 119 return (NULL); 120 return (X509_PUBKEY_get(req->req_info->pubkey)); 121 } 122 LCRYPTO_ALIAS(X509_REQ_get_pubkey); 123 124 EVP_PKEY * 125 X509_REQ_get0_pubkey(X509_REQ *req) 126 { 127 if (req == NULL || req->req_info == NULL) 128 return NULL; 129 return X509_PUBKEY_get0(req->req_info->pubkey); 130 } 131 LCRYPTO_ALIAS(X509_REQ_get0_pubkey); 132 133 int 134 X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k) 135 { 136 EVP_PKEY *xk = NULL; 137 int ok = 0; 138 139 if ((xk = X509_REQ_get0_pubkey(x)) == NULL) 140 return 0; 141 142 switch (EVP_PKEY_cmp(xk, k)) { 143 case 1: 144 ok = 1; 145 break; 146 case 0: 147 X509error(X509_R_KEY_VALUES_MISMATCH); 148 break; 149 case -1: 150 X509error(X509_R_KEY_TYPE_MISMATCH); 151 break; 152 case -2: 153 #ifndef OPENSSL_NO_EC 154 if (k->type == EVP_PKEY_EC) { 155 X509error(ERR_R_EC_LIB); 156 break; 157 } 158 #endif 159 #ifndef OPENSSL_NO_DH 160 if (k->type == EVP_PKEY_DH) { 161 /* No idea */ 162 X509error(X509_R_CANT_CHECK_DH_KEY); 163 break; 164 } 165 #endif 166 X509error(X509_R_UNKNOWN_KEY_TYPE); 167 } 168 169 return (ok); 170 } 171 LCRYPTO_ALIAS(X509_REQ_check_private_key); 172 173 /* It seems several organisations had the same idea of including a list of 174 * extensions in a certificate request. There are at least two OIDs that are 175 * used and there may be more: so the list is configurable. 176 */ 177 178 static int ext_nid_list[] = {NID_ext_req, NID_ms_ext_req, NID_undef}; 179 180 static int *ext_nids = ext_nid_list; 181 182 int 183 X509_REQ_extension_nid(int req_nid) 184 { 185 int i, nid; 186 187 for (i = 0; ; i++) { 188 nid = ext_nids[i]; 189 if (nid == NID_undef) 190 return 0; 191 else if (req_nid == nid) 192 return 1; 193 } 194 } 195 LCRYPTO_ALIAS(X509_REQ_extension_nid); 196 197 int * 198 X509_REQ_get_extension_nids(void) 199 { 200 return ext_nids; 201 } 202 LCRYPTO_ALIAS(X509_REQ_get_extension_nids); 203 204 void 205 X509_REQ_set_extension_nids(int *nids) 206 { 207 ext_nids = nids; 208 } 209 LCRYPTO_ALIAS(X509_REQ_set_extension_nids); 210 211 STACK_OF(X509_EXTENSION) * 212 X509_REQ_get_extensions(X509_REQ *req) 213 { 214 X509_ATTRIBUTE *attr; 215 ASN1_TYPE *ext = NULL; 216 int idx, *pnid; 217 const unsigned char *p; 218 219 if (req == NULL || req->req_info == NULL || ext_nids == NULL) 220 return NULL; 221 for (pnid = ext_nids; *pnid != NID_undef; pnid++) { 222 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1); 223 if (idx == -1) 224 continue; 225 attr = X509_REQ_get_attr(req, idx); 226 ext = X509_ATTRIBUTE_get0_type(attr, 0); 227 break; 228 } 229 if (ext == NULL) 230 return sk_X509_EXTENSION_new_null(); 231 if (ext->type != V_ASN1_SEQUENCE) 232 return NULL; 233 p = ext->value.sequence->data; 234 return d2i_X509_EXTENSIONS(NULL, &p, ext->value.sequence->length); 235 } 236 LCRYPTO_ALIAS(X509_REQ_get_extensions); 237 238 /* 239 * Add a STACK_OF extensions to a certificate request: allow alternative OIDs 240 * in case we want to create a non-standard one. 241 */ 242 243 int 244 X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts, 245 int nid) 246 { 247 unsigned char *ext = NULL; 248 int extlen; 249 int rv; 250 251 extlen = i2d_X509_EXTENSIONS(exts, &ext); 252 if (extlen <= 0) 253 return 0; 254 255 rv = X509_REQ_add1_attr_by_NID(req, nid, V_ASN1_SEQUENCE, ext, extlen); 256 free(ext); 257 258 return rv; 259 } 260 LCRYPTO_ALIAS(X509_REQ_add_extensions_nid); 261 262 /* This is the normal usage: use the "official" OID */ 263 int 264 X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts) 265 { 266 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req); 267 } 268 LCRYPTO_ALIAS(X509_REQ_add_extensions); 269 270 /* Request attribute functions */ 271 272 int 273 X509_REQ_get_attr_count(const X509_REQ *req) 274 { 275 return X509at_get_attr_count(req->req_info->attributes); 276 } 277 LCRYPTO_ALIAS(X509_REQ_get_attr_count); 278 279 int 280 X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos) 281 { 282 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos); 283 } 284 LCRYPTO_ALIAS(X509_REQ_get_attr_by_NID); 285 286 int 287 X509_REQ_get_attr_by_OBJ(const X509_REQ *req, const ASN1_OBJECT *obj, 288 int lastpos) 289 { 290 return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos); 291 } 292 LCRYPTO_ALIAS(X509_REQ_get_attr_by_OBJ); 293 294 X509_ATTRIBUTE * 295 X509_REQ_get_attr(const X509_REQ *req, int loc) 296 { 297 return X509at_get_attr(req->req_info->attributes, loc); 298 } 299 LCRYPTO_ALIAS(X509_REQ_get_attr); 300 301 X509_ATTRIBUTE * 302 X509_REQ_delete_attr(X509_REQ *req, int loc) 303 { 304 return X509at_delete_attr(req->req_info->attributes, loc); 305 } 306 LCRYPTO_ALIAS(X509_REQ_delete_attr); 307 308 int 309 X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr) 310 { 311 if (X509at_add1_attr(&req->req_info->attributes, attr)) 312 return 1; 313 return 0; 314 } 315 LCRYPTO_ALIAS(X509_REQ_add1_attr); 316 317 int 318 X509_REQ_add1_attr_by_OBJ(X509_REQ *req, const ASN1_OBJECT *obj, int type, 319 const unsigned char *bytes, int len) 320 { 321 if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj, 322 type, bytes, len)) 323 return 1; 324 return 0; 325 } 326 LCRYPTO_ALIAS(X509_REQ_add1_attr_by_OBJ); 327 328 int 329 X509_REQ_add1_attr_by_NID(X509_REQ *req, int nid, int type, 330 const unsigned char *bytes, int len) 331 { 332 if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid, 333 type, bytes, len)) 334 return 1; 335 return 0; 336 } 337 LCRYPTO_ALIAS(X509_REQ_add1_attr_by_NID); 338 339 int 340 X509_REQ_add1_attr_by_txt(X509_REQ *req, const char *attrname, int type, 341 const unsigned char *bytes, int len) 342 { 343 if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname, 344 type, bytes, len)) 345 return 1; 346 return 0; 347 } 348 LCRYPTO_ALIAS(X509_REQ_add1_attr_by_txt); 349 350 int 351 i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp) 352 { 353 req->req_info->enc.modified = 1; 354 return i2d_X509_REQ_INFO(req->req_info, pp); 355 } 356 LCRYPTO_ALIAS(i2d_re_X509_REQ_tbs); 357