x509_req.c revision 296465
11832Swollman/* crypto/x509/x509_req.c */ 21832Swollman/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 31832Swollman * All rights reserved. 41832Swollman * 51832Swollman * This package is an SSL implementation written 61832Swollman * by Eric Young (eay@cryptsoft.com). 71832Swollman * The implementation was written so as to conform with Netscapes SSL. 81832Swollman * 91832Swollman * This library is free for commercial and non-commercial use as long as 101832Swollman * the following conditions are aheared to. The following conditions 111832Swollman * apply to all code found in this distribution, be it the RC4, RSA, 121832Swollman * lhash, DES, etc., code; not just the SSL code. The SSL documentation 131832Swollman * included with this distribution is covered by the same copyright terms 141832Swollman * except that the holder is Tim Hudson (tjh@cryptsoft.com). 151832Swollman * 161832Swollman * Copyright remains Eric Young's, and as such any Copyright notices in 171832Swollman * the code are not to be removed. 181832Swollman * If this package is used in a product, Eric Young should be given attribution 191832Swollman * as the author of the parts of the library used. 201832Swollman * This can be in the form of a textual message at program startup or 211832Swollman * in documentation (online or textual) provided with the package. 221832Swollman * 231832Swollman * Redistribution and use in source and binary forms, with or without 241832Swollman * modification, are permitted provided that the following conditions 251832Swollman * are met: 261832Swollman * 1. Redistributions of source code must retain the copyright 271832Swollman * notice, this list of conditions and the following disclaimer. 281832Swollman * 2. Redistributions in binary form must reproduce the above copyright 291832Swollman * notice, this list of conditions and the following disclaimer in the 301832Swollman * documentation and/or other materials provided with the distribution. 311832Swollman * 3. All advertising materials mentioning features or use of this software 321832Swollman * must display the following acknowledgement: 331832Swollman * "This product includes cryptographic software written by 341832Swollman * Eric Young (eay@cryptsoft.com)" 351832Swollman * The word 'cryptographic' can be left out if the rouines from the library 361832Swollman * being used are not cryptographic related :-). 371832Swollman * 4. If you include any Windows specific code (or a derivative thereof) from 3830870Scharnier * the apps directory (application code) you must include an acknowledgement: 3930870Scharnier * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 4030870Scharnier * 4130870Scharnier * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4230870Scharnier * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4330870Scharnier * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 441832Swollman * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 451832Swollman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 461832Swollman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 471832Swollman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 481832Swollman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 491832Swollman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 501832Swollman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 511832Swollman * SUCH DAMAGE. 521832Swollman * 531832Swollman * The licence and distribution terms for any publically available version or 541832Swollman * derivative of this code cannot be changed. i.e. this code cannot simply be 551832Swollman * copied and put under another distribution licence 561832Swollman * [including the GNU Public Licence.] 571832Swollman */ 581832Swollman 591832Swollman#include <stdio.h> 601832Swollman#include "cryptlib.h" 611832Swollman#include <openssl/bn.h> 621832Swollman#include <openssl/evp.h> 631832Swollman#include <openssl/asn1.h> 641832Swollman#include <openssl/x509.h> 651832Swollman#include <openssl/objects.h> 661832Swollman#include <openssl/buffer.h> 671832Swollman#include <openssl/pem.h> 681832Swollman 691832SwollmanX509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md) 701832Swollman{ 711832Swollman X509_REQ *ret; 721832Swollman X509_REQ_INFO *ri; 731832Swollman int i; 741832Swollman EVP_PKEY *pktmp; 751832Swollman 761832Swollman ret = X509_REQ_new(); 771832Swollman if (ret == NULL) { 781832Swollman X509err(X509_F_X509_TO_X509_REQ, ERR_R_MALLOC_FAILURE); 791832Swollman goto err; 801832Swollman } 811832Swollman 821832Swollman ri = ret->req_info; 831832Swollman 841832Swollman ri->version->length = 1; 851832Swollman ri->version->data = (unsigned char *)OPENSSL_malloc(1); 861832Swollman if (ri->version->data == NULL) 871832Swollman goto err; 881832Swollman ri->version->data[0] = 0; /* version == 0 */ 891832Swollman 901832Swollman if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x))) 911832Swollman goto err; 921832Swollman 931832Swollman pktmp = X509_get_pubkey(x); 941832Swollman if (pktmp == NULL) 951832Swollman goto err; 961832Swollman i = X509_REQ_set_pubkey(ret, pktmp); 971832Swollman EVP_PKEY_free(pktmp); 981832Swollman if (!i) 991832Swollman goto err; 1001832Swollman 1011832Swollman if (pkey != NULL) { 1021832Swollman if (!X509_REQ_sign(ret, pkey, md)) 1031832Swollman goto err; 1041832Swollman } 1051832Swollman return (ret); 1061832Swollman err: 1071832Swollman X509_REQ_free(ret); 1081832Swollman return (NULL); 1091832Swollman} 1101832Swollman 1111832SwollmanEVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req) 1121832Swollman{ 1131832Swollman if ((req == NULL) || (req->req_info == NULL)) 1141832Swollman return (NULL); 1151832Swollman return (X509_PUBKEY_get(req->req_info->pubkey)); 1161832Swollman} 1171832Swollman 1181832Swollmanint X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k) 1191832Swollman{ 1201832Swollman EVP_PKEY *xk = NULL; 1211832Swollman int ok = 0; 1221832Swollman 1231832Swollman 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 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, 130 X509_R_KEY_VALUES_MISMATCH); 131 break; 132 case -1: 133 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_KEY_TYPE_MISMATCH); 134 break; 135 case -2: 136#ifndef OPENSSL_NO_EC 137 if (k->type == EVP_PKEY_EC) { 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 /* No idea */ 145 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, 146 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/* 158 * It seems several organisations had the same idea of including a list of 159 * extensions in a certificate request. There are at least two OIDs that are 160 * used and there may be more: so the list is configurable. 161 */ 162 163static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef }; 164 165static int *ext_nids = ext_nid_list; 166 167int X509_REQ_extension_nid(int req_nid) 168{ 169 int i, nid; 170 for (i = 0;; i++) { 171 nid = ext_nids[i]; 172 if (nid == NID_undef) 173 return 0; 174 else if (req_nid == nid) 175 return 1; 176 } 177} 178 179int *X509_REQ_get_extension_nids(void) 180{ 181 return ext_nids; 182} 183 184void X509_REQ_set_extension_nids(int *nids) 185{ 186 ext_nids = nids; 187} 188 189STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req) 190{ 191 X509_ATTRIBUTE *attr; 192 ASN1_TYPE *ext = NULL; 193 int idx, *pnid; 194 const unsigned char *p; 195 196 if ((req == NULL) || (req->req_info == NULL) || !ext_nids) 197 return (NULL); 198 for (pnid = ext_nids; *pnid != NID_undef; pnid++) { 199 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1); 200 if (idx == -1) 201 continue; 202 attr = X509_REQ_get_attr(req, idx); 203 if (attr->single) 204 ext = attr->value.single; 205 else if (sk_ASN1_TYPE_num(attr->value.set)) 206 ext = sk_ASN1_TYPE_value(attr->value.set, 0); 207 break; 208 } 209 if (!ext || (ext->type != V_ASN1_SEQUENCE)) 210 return NULL; 211 p = ext->value.sequence->data; 212 return d2i_ASN1_SET_OF_X509_EXTENSION(NULL, &p, 213 ext->value.sequence->length, 214 d2i_X509_EXTENSION, 215 X509_EXTENSION_free, 216 V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL); 217} 218 219/* 220 * Add a STACK_OF extensions to a certificate request: allow alternative OIDs 221 * in case we want to create a non standard one. 222 */ 223 224int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts, 225 int nid) 226{ 227 unsigned char *p = NULL, *q; 228 long len; 229 ASN1_TYPE *at = NULL; 230 X509_ATTRIBUTE *attr = NULL; 231 if (!(at = ASN1_TYPE_new()) || !(at->value.sequence = ASN1_STRING_new())) 232 goto err; 233 234 at->type = V_ASN1_SEQUENCE; 235 /* Generate encoding of extensions */ 236 len = i2d_ASN1_SET_OF_X509_EXTENSION(exts, NULL, i2d_X509_EXTENSION, 237 V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 238 IS_SEQUENCE); 239 if (!(p = OPENSSL_malloc(len))) 240 goto err; 241 q = p; 242 i2d_ASN1_SET_OF_X509_EXTENSION(exts, &q, i2d_X509_EXTENSION, 243 V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, 244 IS_SEQUENCE); 245 at->value.sequence->data = p; 246 p = NULL; 247 at->value.sequence->length = len; 248 if (!(attr = X509_ATTRIBUTE_new())) 249 goto err; 250 if (!(attr->value.set = sk_ASN1_TYPE_new_null())) 251 goto err; 252 if (!sk_ASN1_TYPE_push(attr->value.set, at)) 253 goto err; 254 at = NULL; 255 attr->single = 0; 256 attr->object = OBJ_nid2obj(nid); 257 if (!req->req_info->attributes) { 258 if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null())) 259 goto err; 260 } 261 if (!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr)) 262 goto err; 263 return 1; 264 err: 265 if (p) 266 OPENSSL_free(p); 267 X509_ATTRIBUTE_free(attr); 268 ASN1_TYPE_free(at); 269 return 0; 270} 271 272/* This is the normal usage: use the "official" OID */ 273int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts) 274{ 275 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req); 276} 277 278/* Request attribute functions */ 279 280int X509_REQ_get_attr_count(const X509_REQ *req) 281{ 282 return X509at_get_attr_count(req->req_info->attributes); 283} 284 285int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos) 286{ 287 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos); 288} 289 290int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj, 291 int lastpos) 292{ 293 return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos); 294} 295 296X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc) 297{ 298 return X509at_get_attr(req->req_info->attributes, loc); 299} 300 301X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc) 302{ 303 return X509at_delete_attr(req->req_info->attributes, loc); 304} 305 306int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr) 307{ 308 if (X509at_add1_attr(&req->req_info->attributes, attr)) 309 return 1; 310 return 0; 311} 312 313int X509_REQ_add1_attr_by_OBJ(X509_REQ *req, 314 const ASN1_OBJECT *obj, int type, 315 const unsigned char *bytes, int len) 316{ 317 if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj, 318 type, bytes, len)) 319 return 1; 320 return 0; 321} 322 323int X509_REQ_add1_attr_by_NID(X509_REQ *req, 324 int nid, int type, 325 const unsigned char *bytes, int len) 326{ 327 if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid, 328 type, bytes, len)) 329 return 1; 330 return 0; 331} 332 333int X509_REQ_add1_attr_by_txt(X509_REQ *req, 334 const char *attrname, int type, 335 const unsigned char *bytes, int len) 336{ 337 if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname, 338 type, bytes, len)) 339 return 1; 340 return 0; 341} 342