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 X509err(X509_F_X509_TO_X509_REQ, ERR_R_MALLOC_FAILURE); 80 goto err; 81 } 82 83 ri = ret->req_info; 84 85 ri->version->length = 1; 86 ri->version->data = (unsigned char *)OPENSSL_malloc(1); 87 if (ri->version->data == NULL) 88 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) 100 goto err; 101 102 if (pkey != NULL) { 103 if (!X509_REQ_sign(ret, pkey, md)) 104 goto err; 105 } 106 return (ret); 107 err: 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 case 1: 127 ok = 1; 128 break; 129 case 0: 130 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, 131 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 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB); 140 break; 141 } 142#endif 143#ifndef OPENSSL_NO_DH 144 if (k->type == EVP_PKEY_DH) { 145 /* No idea */ 146 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, 147 X509_R_CANT_CHECK_DH_KEY); 148 break; 149 } 150#endif 151 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_UNKNOWN_KEY_TYPE); 152 } 153 154 EVP_PKEY_free(xk); 155 return (ok); 156} 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) 174 return 0; 175 else if (req_nid == nid) 176 return 1; 177 } 178} 179 180int *X509_REQ_get_extension_nids(void) 181{ 182 return ext_nids; 183} 184 185void X509_REQ_set_extension_nids(int *nids) 186{ 187 ext_nids = nids; 188} 189 190STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req) 191{ 192 X509_ATTRIBUTE *attr; 193 ASN1_TYPE *ext = NULL; 194 int idx, *pnid; 195 const unsigned char *p; 196 197 if ((req == NULL) || (req->req_info == NULL) || !ext_nids) 198 return (NULL); 199 for (pnid = ext_nids; *pnid != NID_undef; pnid++) { 200 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1); 201 if (idx == -1) 202 continue; 203 attr = X509_REQ_get_attr(req, idx); 204 if (attr->single) 205 ext = attr->value.single; 206 else if (sk_ASN1_TYPE_num(attr->value.set)) 207 ext = sk_ASN1_TYPE_value(attr->value.set, 0); 208 break; 209 } 210 if (!ext || (ext->type != V_ASN1_SEQUENCE)) 211 return NULL; 212 p = ext->value.sequence->data; 213 return (STACK_OF(X509_EXTENSION) *) 214 ASN1_item_d2i(NULL, &p, ext->value.sequence->length, 215 ASN1_ITEM_rptr(X509_EXTENSIONS)); 216} 217 218/* 219 * Add a STACK_OF extensions to a certificate request: allow alternative OIDs 220 * in case we want to create a non standard one. 221 */ 222 223int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts, 224 int nid) 225{ 226 ASN1_TYPE *at = NULL; 227 X509_ATTRIBUTE *attr = NULL; 228 if (!(at = ASN1_TYPE_new()) || !(at->value.sequence = ASN1_STRING_new())) 229 goto err; 230 231 at->type = V_ASN1_SEQUENCE; 232 /* Generate encoding of extensions */ 233 at->value.sequence->length = 234 ASN1_item_i2d((ASN1_VALUE *)exts, 235 &at->value.sequence->data, 236 ASN1_ITEM_rptr(X509_EXTENSIONS)); 237 if (!(attr = X509_ATTRIBUTE_new())) 238 goto err; 239 if (!(attr->value.set = sk_ASN1_TYPE_new_null())) 240 goto err; 241 if (!sk_ASN1_TYPE_push(attr->value.set, at)) 242 goto err; 243 at = NULL; 244 attr->single = 0; 245 attr->object = OBJ_nid2obj(nid); 246 if (!req->req_info->attributes) { 247 if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null())) 248 goto err; 249 } 250 if (!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr)) 251 goto err; 252 return 1; 253 err: 254 X509_ATTRIBUTE_free(attr); 255 ASN1_TYPE_free(at); 256 return 0; 257} 258 259/* This is the normal usage: use the "official" OID */ 260int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts) 261{ 262 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req); 263} 264 265/* Request attribute functions */ 266 267int X509_REQ_get_attr_count(const X509_REQ *req) 268{ 269 return X509at_get_attr_count(req->req_info->attributes); 270} 271 272int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos) 273{ 274 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos); 275} 276 277int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj, 278 int lastpos) 279{ 280 return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos); 281} 282 283X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc) 284{ 285 return X509at_get_attr(req->req_info->attributes, loc); 286} 287 288X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc) 289{ 290 return X509at_delete_attr(req->req_info->attributes, loc); 291} 292 293int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr) 294{ 295 if (X509at_add1_attr(&req->req_info->attributes, attr)) 296 return 1; 297 return 0; 298} 299 300int X509_REQ_add1_attr_by_OBJ(X509_REQ *req, 301 const ASN1_OBJECT *obj, int type, 302 const unsigned char *bytes, int len) 303{ 304 if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj, 305 type, bytes, len)) 306 return 1; 307 return 0; 308} 309 310int X509_REQ_add1_attr_by_NID(X509_REQ *req, 311 int nid, int type, 312 const unsigned char *bytes, int len) 313{ 314 if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid, 315 type, bytes, len)) 316 return 1; 317 return 0; 318} 319 320int X509_REQ_add1_attr_by_txt(X509_REQ *req, 321 const char *attrname, int type, 322 const unsigned char *bytes, int len) 323{ 324 if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname, 325 type, bytes, len)) 326 return 1; 327 return 0; 328} 329