x509_req.c revision 280275
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 59#include <stdio.h> 60#include "cryptlib.h" 61#include <openssl/bn.h> 62#include <openssl/evp.h> 63#include <openssl/asn1.h> 64#include <openssl/asn1t.h> 65#include <openssl/x509.h> 66#include <openssl/objects.h> 67#include <openssl/buffer.h> 68#include <openssl/pem.h> 69 70X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md) 71 { 72 X509_REQ *ret; 73 X509_REQ_INFO *ri; 74 int i; 75 EVP_PKEY *pktmp; 76 77 ret=X509_REQ_new(); 78 if (ret == NULL) 79 { 80 X509err(X509_F_X509_TO_X509_REQ,ERR_R_MALLOC_FAILURE); 81 goto err; 82 } 83 84 ri=ret->req_info; 85 86 ri->version->length=1; 87 ri->version->data=(unsigned char *)OPENSSL_malloc(1); 88 if (ri->version->data == NULL) goto err; 89 ri->version->data[0]=0; /* version == 0 */ 90 91 if (!X509_REQ_set_subject_name(ret,X509_get_subject_name(x))) 92 goto err; 93 94 pktmp = X509_get_pubkey(x); 95 if (pktmp == NULL) 96 goto err; 97 i=X509_REQ_set_pubkey(ret,pktmp); 98 EVP_PKEY_free(pktmp); 99 if (!i) goto err; 100 101 if (pkey != NULL) 102 { 103 if (!X509_REQ_sign(ret,pkey,md)) 104 goto err; 105 } 106 return(ret); 107err: 108 X509_REQ_free(ret); 109 return(NULL); 110 } 111 112EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req) 113 { 114 if ((req == NULL) || (req->req_info == NULL)) 115 return(NULL); 116 return(X509_PUBKEY_get(req->req_info->pubkey)); 117 } 118 119int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k) 120 { 121 EVP_PKEY *xk=NULL; 122 int ok=0; 123 124 xk=X509_REQ_get_pubkey(x); 125 switch (EVP_PKEY_cmp(xk, k)) 126 { 127 case 1: 128 ok=1; 129 break; 130 case 0: 131 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH); 132 break; 133 case -1: 134 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_KEY_TYPE_MISMATCH); 135 break; 136 case -2: 137#ifndef OPENSSL_NO_EC 138 if (k->type == EVP_PKEY_EC) 139 { 140 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB); 141 break; 142 } 143#endif 144#ifndef OPENSSL_NO_DH 145 if (k->type == EVP_PKEY_DH) 146 { 147 /* No idea */ 148 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_CANT_CHECK_DH_KEY); 149 break; 150 } 151#endif 152 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_UNKNOWN_KEY_TYPE); 153 } 154 155 EVP_PKEY_free(xk); 156 return(ok); 157 } 158 159/* It seems several organisations had the same idea of including a list of 160 * extensions in a certificate request. There are at least two OIDs that are 161 * used and there may be more: so the list is configurable. 162 */ 163 164static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef}; 165 166static int *ext_nids = ext_nid_list; 167 168int X509_REQ_extension_nid(int req_nid) 169{ 170 int i, nid; 171 for(i = 0; ; i++) { 172 nid = ext_nids[i]; 173 if(nid == NID_undef) return 0; 174 else if (req_nid == nid) return 1; 175 } 176} 177 178int *X509_REQ_get_extension_nids(void) 179{ 180 return ext_nids; 181} 182 183void X509_REQ_set_extension_nids(int *nids) 184{ 185 ext_nids = nids; 186} 187 188STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req) 189 { 190 X509_ATTRIBUTE *attr; 191 ASN1_TYPE *ext = NULL; 192 int idx, *pnid; 193 const unsigned char *p; 194 195 if ((req == NULL) || (req->req_info == NULL) || !ext_nids) 196 return(NULL); 197 for (pnid = ext_nids; *pnid != NID_undef; pnid++) 198 { 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) ext = attr->value.single; 204 else if(sk_ASN1_TYPE_num(attr->value.set)) 205 ext = sk_ASN1_TYPE_value(attr->value.set, 0); 206 break; 207 } 208 if(!ext || (ext->type != V_ASN1_SEQUENCE)) 209 return NULL; 210 p = ext->value.sequence->data; 211 return (STACK_OF(X509_EXTENSION) *) 212 ASN1_item_d2i(NULL, &p, ext->value.sequence->length, 213 ASN1_ITEM_rptr(X509_EXTENSIONS)); 214} 215 216/* Add a STACK_OF extensions to a certificate request: allow alternative OIDs 217 * in case we want to create a non standard one. 218 */ 219 220int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts, 221 int nid) 222{ 223 ASN1_TYPE *at = NULL; 224 X509_ATTRIBUTE *attr = NULL; 225 if(!(at = ASN1_TYPE_new()) || 226 !(at->value.sequence = ASN1_STRING_new())) goto err; 227 228 at->type = V_ASN1_SEQUENCE; 229 /* Generate encoding of extensions */ 230 at->value.sequence->length = 231 ASN1_item_i2d((ASN1_VALUE *)exts, 232 &at->value.sequence->data, 233 ASN1_ITEM_rptr(X509_EXTENSIONS)); 234 if(!(attr = X509_ATTRIBUTE_new())) goto err; 235 if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err; 236 if(!sk_ASN1_TYPE_push(attr->value.set, at)) goto err; 237 at = NULL; 238 attr->single = 0; 239 attr->object = OBJ_nid2obj(nid); 240 if (!req->req_info->attributes) 241 { 242 if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null())) 243 goto err; 244 } 245 if(!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr)) goto err; 246 return 1; 247 err: 248 X509_ATTRIBUTE_free(attr); 249 ASN1_TYPE_free(at); 250 return 0; 251} 252/* This is the normal usage: use the "official" OID */ 253int 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 260int X509_REQ_get_attr_count(const X509_REQ *req) 261{ 262 return X509at_get_attr_count(req->req_info->attributes); 263} 264 265int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, 266 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)) return 1; 290 return 0; 291} 292 293int 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)) return 1; 299 return 0; 300} 301 302int X509_REQ_add1_attr_by_NID(X509_REQ *req, 303 int nid, int type, 304 const unsigned char *bytes, int len) 305{ 306 if(X509at_add1_attr_by_NID(&req->req_info->attributes, nid, 307 type, bytes, len)) return 1; 308 return 0; 309} 310 311int X509_REQ_add1_attr_by_txt(X509_REQ *req, 312 const char *attrname, int type, 313 const unsigned char *bytes, int len) 314{ 315 if(X509at_add1_attr_by_txt(&req->req_info->attributes, attrname, 316 type, bytes, len)) return 1; 317 return 0; 318} 319