1 /* $OpenBSD: x509_req.c,v 1.15 2014/07/11 08:44:49 jsing 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 X509_REQ * 74 X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md) 75 { 76 X509_REQ *ret; 77 X509_REQ_INFO *ri; 78 int i; 79 EVP_PKEY *pktmp; 80 81 ret = X509_REQ_new(); 82 if (ret == NULL) { 83 X509err(X509_F_X509_TO_X509_REQ, ERR_R_MALLOC_FAILURE); 84 goto err; 85 } 86 87 ri = ret->req_info; 88 89 ri->version->length = 1; 90 ri->version->data = malloc(1); 91 if (ri->version->data == NULL) 92 goto err; 93 ri->version->data[0] = 0; /* version == 0 */ 94 95 if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x))) 96 goto err; 97 98 pktmp = X509_get_pubkey(x); 99 i = X509_REQ_set_pubkey(ret, pktmp); 100 EVP_PKEY_free(pktmp); 101 if (!i) 102 goto err; 103 104 if (pkey != NULL) { 105 if (!X509_REQ_sign(ret, pkey, md)) 106 goto err; 107 } 108 return (ret); 109 110 err: 111 X509_REQ_free(ret); 112 return (NULL); 113 } 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 } 122 123 int 124 X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k) 125 { 126 EVP_PKEY *xk = NULL; 127 int ok = 0; 128 129 xk = X509_REQ_get_pubkey(x); 130 switch (EVP_PKEY_cmp(xk, k)) { 131 case 1: 132 ok = 1; 133 break; 134 case 0: 135 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, 136 X509_R_KEY_VALUES_MISMATCH); 137 break; 138 case -1: 139 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, 140 X509_R_KEY_TYPE_MISMATCH); 141 break; 142 case -2: 143 #ifndef OPENSSL_NO_EC 144 if (k->type == EVP_PKEY_EC) { 145 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, 146 ERR_R_EC_LIB); 147 break; 148 } 149 #endif 150 #ifndef OPENSSL_NO_DH 151 if (k->type == EVP_PKEY_DH) { 152 /* No idea */ 153 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, 154 X509_R_CANT_CHECK_DH_KEY); 155 break; 156 } 157 #endif 158 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, 159 X509_R_UNKNOWN_KEY_TYPE); 160 } 161 162 EVP_PKEY_free(xk); 163 return (ok); 164 } 165 166 /* It seems several organisations had the same idea of including a list of 167 * extensions in a certificate request. There are at least two OIDs that are 168 * used and there may be more: so the list is configurable. 169 */ 170 171 static int ext_nid_list[] = {NID_ext_req, NID_ms_ext_req, NID_undef}; 172 173 static int *ext_nids = ext_nid_list; 174 175 int 176 X509_REQ_extension_nid(int req_nid) 177 { 178 int i, nid; 179 180 for (i = 0; ; i++) { 181 nid = ext_nids[i]; 182 if (nid == NID_undef) 183 return 0; 184 else if (req_nid == nid) 185 return 1; 186 } 187 } 188 189 int * 190 X509_REQ_get_extension_nids(void) 191 { 192 return ext_nids; 193 } 194 195 void 196 X509_REQ_set_extension_nids(int *nids) 197 { 198 ext_nids = nids; 199 } 200 201 STACK_OF(X509_EXTENSION) * 202 X509_REQ_get_extensions(X509_REQ *req) 203 { 204 X509_ATTRIBUTE *attr; 205 ASN1_TYPE *ext = NULL; 206 int idx, *pnid; 207 const unsigned char *p; 208 209 if ((req == NULL) || (req->req_info == NULL) || !ext_nids) 210 return (NULL); 211 for (pnid = ext_nids; *pnid != NID_undef; pnid++) { 212 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1); 213 if (idx == -1) 214 continue; 215 attr = X509_REQ_get_attr(req, idx); 216 if (attr->single) 217 ext = attr->value.single; 218 else if (sk_ASN1_TYPE_num(attr->value.set)) 219 ext = sk_ASN1_TYPE_value(attr->value.set, 0); 220 break; 221 } 222 if (!ext || (ext->type != V_ASN1_SEQUENCE)) 223 return NULL; 224 p = ext->value.sequence->data; 225 return (STACK_OF(X509_EXTENSION) *)ASN1_item_d2i(NULL, &p, 226 ext->value.sequence->length, ASN1_ITEM_rptr(X509_EXTENSIONS)); 227 } 228 229 /* Add a STACK_OF extensions to a certificate request: allow alternative OIDs 230 * in case we want to create a non standard one. 231 */ 232 233 int 234 X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts, 235 int nid) 236 { 237 ASN1_TYPE *at = NULL; 238 X509_ATTRIBUTE *attr = NULL; 239 240 if (!(at = ASN1_TYPE_new()) || 241 !(at->value.sequence = ASN1_STRING_new())) 242 goto err; 243 244 at->type = V_ASN1_SEQUENCE; 245 /* Generate encoding of extensions */ 246 at->value.sequence->length = ASN1_item_i2d((ASN1_VALUE *)exts, 247 &at->value.sequence->data, ASN1_ITEM_rptr(X509_EXTENSIONS)); 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; 264 265 err: 266 X509_ATTRIBUTE_free(attr); 267 ASN1_TYPE_free(at); 268 return 0; 269 } 270 271 /* This is the normal usage: use the "official" OID */ 272 int 273 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 */ 279 280 int 281 X509_REQ_get_attr_count(const X509_REQ *req) 282 { 283 return X509at_get_attr_count(req->req_info->attributes); 284 } 285 286 int 287 X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos) 288 { 289 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos); 290 } 291 292 int 293 X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj, int lastpos) 294 { 295 return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos); 296 } 297 298 X509_ATTRIBUTE * 299 X509_REQ_get_attr(const X509_REQ *req, int loc) 300 { 301 return X509at_get_attr(req->req_info->attributes, loc); 302 } 303 304 X509_ATTRIBUTE * 305 X509_REQ_delete_attr(X509_REQ *req, int loc) 306 { 307 return X509at_delete_attr(req->req_info->attributes, loc); 308 } 309 310 int 311 X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr) 312 { 313 if (X509at_add1_attr(&req->req_info->attributes, attr)) 314 return 1; 315 return 0; 316 } 317 318 int 319 X509_REQ_add1_attr_by_OBJ(X509_REQ *req, const ASN1_OBJECT *obj, int type, 320 const unsigned char *bytes, int len) 321 { 322 if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj, 323 type, bytes, len)) 324 return 1; 325 return 0; 326 } 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 } 337 338 int 339 X509_REQ_add1_attr_by_txt(X509_REQ *req, const char *attrname, int type, 340 const unsigned char *bytes, int len) 341 { 342 if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname, 343 type, bytes, len)) 344 return 1; 345 return 0; 346 } 347