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/x509.h> 65 #include <openssl/objects.h> 66 #include <openssl/buffer.h> 67 #include <openssl/pem.h> 68 69 X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md) 70 { 71 X509_REQ *ret; 72 X509_REQ_INFO *ri; 73 int i; 74 EVP_PKEY *pktmp; 75 76 ret=X509_REQ_new(); 77 if (ret == NULL) 78 { 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) goto err; 88 ri->version->data[0]=0; /* version == 0 */ 89 90 if (!X509_REQ_set_subject_name(ret,X509_get_subject_name(x))) 91 goto err; 92 93 pktmp = X509_get_pubkey(x); 94 i=X509_REQ_set_pubkey(ret,pktmp); 95 EVP_PKEY_free(pktmp); 96 if (!i) goto err; 97 98 if (pkey != NULL) 99 { 100 if (!X509_REQ_sign(ret,pkey,md)) 101 goto err; 102 } 103 return(ret); 104 err: 105 X509_REQ_free(ret); 106 return(NULL); 107 } 108 109 EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req) 110 { 111 if ((req == NULL) || (req->req_info == NULL)) 112 return(NULL); 113 return(X509_PUBKEY_get(req->req_info->pubkey)); 114 } 115 116 int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k) 117 { 118 EVP_PKEY *xk=NULL; 119 int ok=0; 120 121 xk=X509_REQ_get_pubkey(x); 122 switch (EVP_PKEY_cmp(xk, k)) 123 { 124 case 1: 125 ok=1; 126 break; 127 case 0: 128 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH); 129 break; 130 case -1: 131 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_KEY_TYPE_MISMATCH); 132 break; 133 case -2: 134 #ifndef OPENSSL_NO_EC 135 if (k->type == EVP_PKEY_EC) 136 { 137 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB); 138 break; 139 } 140 #endif 141 #ifndef OPENSSL_NO_DH 142 if (k->type == EVP_PKEY_DH) 143 { 144 /* No idea */ 145 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_CANT_CHECK_DH_KEY); 146 break; 147 } 148 #endif 149 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_UNKNOWN_KEY_TYPE); 150 } 151 152 EVP_PKEY_free(xk); 153 return(ok); 154 } 155 156 /* It seems several organisations had the same idea of including a list of 157 * extensions in a certificate request. There are at least two OIDs that are 158 * used and there may be more: so the list is configurable. 159 */ 160 161 static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef}; 162 163 static int *ext_nids = ext_nid_list; 164 165 int X509_REQ_extension_nid(int req_nid) 166 { 167 int i, nid; 168 for(i = 0; ; i++) { 169 nid = ext_nids[i]; 170 if(nid == NID_undef) return 0; 171 else if (req_nid == nid) return 1; 172 } 173 } 174 175 int *X509_REQ_get_extension_nids(void) 176 { 177 return ext_nids; 178 } 179 180 void X509_REQ_set_extension_nids(int *nids) 181 { 182 ext_nids = nids; 183 } 184 185 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req) 186 { 187 X509_ATTRIBUTE *attr; 188 ASN1_TYPE *ext = NULL; 189 int idx, *pnid; 190 const unsigned char *p; 191 192 if ((req == NULL) || (req->req_info == NULL) || !ext_nids) 193 return(NULL); 194 for (pnid = ext_nids; *pnid != NID_undef; pnid++) 195 { 196 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1); 197 if (idx == -1) 198 continue; 199 attr = X509_REQ_get_attr(req, idx); 200 if(attr->single) ext = attr->value.single; 201 else if(sk_ASN1_TYPE_num(attr->value.set)) 202 ext = sk_ASN1_TYPE_value(attr->value.set, 0); 203 break; 204 } 205 if(!ext || (ext->type != V_ASN1_SEQUENCE)) 206 return NULL; 207 p = ext->value.sequence->data; 208 return d2i_ASN1_SET_OF_X509_EXTENSION(NULL, &p, 209 ext->value.sequence->length, 210 d2i_X509_EXTENSION, X509_EXTENSION_free, 211 V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL); 212 } 213 214 /* Add a STACK_OF extensions to a certificate request: allow alternative OIDs 215 * in case we want to create a non standard one. 216 */ 217 218 int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts, 219 int nid) 220 { 221 unsigned char *p = NULL, *q; 222 long len; 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 len = i2d_ASN1_SET_OF_X509_EXTENSION(exts, NULL, i2d_X509_EXTENSION, 231 V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, IS_SEQUENCE); 232 if(!(p = OPENSSL_malloc(len))) goto err; 233 q = p; 234 i2d_ASN1_SET_OF_X509_EXTENSION(exts, &q, i2d_X509_EXTENSION, 235 V_ASN1_SEQUENCE, V_ASN1_UNIVERSAL, IS_SEQUENCE); 236 at->value.sequence->data = p; 237 p = NULL; 238 at->value.sequence->length = len; 239 if(!(attr = X509_ATTRIBUTE_new())) goto err; 240 if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err; 241 if(!sk_ASN1_TYPE_push(attr->value.set, at)) goto err; 242 at = NULL; 243 attr->single = 0; 244 attr->object = OBJ_nid2obj(nid); 245 if (!req->req_info->attributes) 246 { 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)) goto err; 251 return 1; 252 err: 253 if(p) OPENSSL_free(p); 254 X509_ATTRIBUTE_free(attr); 255 ASN1_TYPE_free(at); 256 return 0; 257 } 258 /* This is the normal usage: use the "official" OID */ 259 int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts) 260 { 261 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req); 262 } 263 264 /* Request attribute functions */ 265 266 int X509_REQ_get_attr_count(const X509_REQ *req) 267 { 268 return X509at_get_attr_count(req->req_info->attributes); 269 } 270 271 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, 272 int lastpos) 273 { 274 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos); 275 } 276 277 int 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 } 282 283 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc) 284 { 285 return X509at_get_attr(req->req_info->attributes, loc); 286 } 287 288 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc) 289 { 290 return X509at_delete_attr(req->req_info->attributes, loc); 291 } 292 293 int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr) 294 { 295 if(X509at_add1_attr(&req->req_info->attributes, attr)) return 1; 296 return 0; 297 } 298 299 int X509_REQ_add1_attr_by_OBJ(X509_REQ *req, 300 const ASN1_OBJECT *obj, int type, 301 const unsigned char *bytes, int len) 302 { 303 if(X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj, 304 type, bytes, len)) return 1; 305 return 0; 306 } 307 308 int X509_REQ_add1_attr_by_NID(X509_REQ *req, 309 int nid, int type, 310 const unsigned char *bytes, int len) 311 { 312 if(X509at_add1_attr_by_NID(&req->req_info->attributes, nid, 313 type, bytes, len)) return 1; 314 return 0; 315 } 316 317 int X509_REQ_add1_attr_by_txt(X509_REQ *req, 318 const char *attrname, int type, 319 const unsigned char *bytes, int len) 320 { 321 if(X509at_add1_attr_by_txt(&req->req_info->attributes, attrname, 322 type, bytes, len)) return 1; 323 return 0; 324 } 325