1 /* crypto/x509/x509_req.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 #include <openssl/asn1.h> 59 #include <openssl/asn1t.h> 60 #include <openssl/bn.h> 61 #include <openssl/buf.h> 62 #include <openssl/err.h> 63 #include <openssl/evp.h> 64 #include <openssl/mem.h> 65 #include <openssl/obj.h> 66 #include <openssl/pem.h> 67 #include <openssl/x509.h> 68 69 70 X509_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 OPENSSL_PUT_ERROR(X509, 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); 107 err: 108 X509_REQ_free(ret); 109 return(NULL); 110 } 111 112 EVP_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 } 118 119 int 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 OPENSSL_PUT_ERROR(X509, X509_REQ_check_private_key, X509_R_KEY_VALUES_MISMATCH); 132 break; 133 case -1: 134 OPENSSL_PUT_ERROR(X509, X509_REQ_check_private_key, X509_R_KEY_TYPE_MISMATCH); 135 break; 136 case -2: 137 if (k->type == EVP_PKEY_EC) 138 { 139 OPENSSL_PUT_ERROR(X509, X509_REQ_check_private_key, ERR_R_EC_LIB); 140 break; 141 } 142 if (k->type == EVP_PKEY_DH) 143 { 144 /* No idea */ 145 OPENSSL_PUT_ERROR(X509, X509_REQ_check_private_key, X509_R_CANT_CHECK_DH_KEY); 146 break; 147 } 148 OPENSSL_PUT_ERROR(X509, X509_REQ_check_private_key, X509_R_UNKNOWN_KEY_TYPE); 149 } 150 151 EVP_PKEY_free(xk); 152 return(ok); 153 } 154 155 /* It seems several organisations had the same idea of including a list of 156 * extensions in a certificate request. There are at least two OIDs that are 157 * used and there may be more: so the list is configurable. 158 */ 159 160 static const int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef}; 161 162 static const int *ext_nids = ext_nid_list; 163 164 int X509_REQ_extension_nid(int req_nid) 165 { 166 int i, nid; 167 for(i = 0; ; i++) { 168 nid = ext_nids[i]; 169 if(nid == NID_undef) return 0; 170 else if (req_nid == nid) return 1; 171 } 172 } 173 174 const int *X509_REQ_get_extension_nids(void) 175 { 176 return ext_nids; 177 } 178 179 void X509_REQ_set_extension_nids(const int *nids) 180 { 181 ext_nids = nids; 182 } 183 184 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req) 185 { 186 X509_ATTRIBUTE *attr; 187 ASN1_TYPE *ext = NULL; 188 int idx; 189 const int *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 (STACK_OF(X509_EXTENSION) *) 209 ASN1_item_d2i(NULL, &p, ext->value.sequence->length, 210 ASN1_ITEM_rptr(X509_EXTENSIONS)); 211 } 212 213 /* Add a STACK_OF extensions to a certificate request: allow alternative OIDs 214 * in case we want to create a non standard one. 215 */ 216 217 int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts, 218 int nid) 219 { 220 ASN1_TYPE *at = NULL; 221 X509_ATTRIBUTE *attr = NULL; 222 if(!(at = ASN1_TYPE_new()) || 223 !(at->value.sequence = ASN1_STRING_new())) goto err; 224 225 at->type = V_ASN1_SEQUENCE; 226 /* Generate encoding of extensions */ 227 at->value.sequence->length = 228 ASN1_item_i2d((ASN1_VALUE *)exts, 229 &at->value.sequence->data, 230 ASN1_ITEM_rptr(X509_EXTENSIONS)); 231 if(!(attr = X509_ATTRIBUTE_new())) goto err; 232 if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err; 233 if(!sk_ASN1_TYPE_push(attr->value.set, at)) goto err; 234 at = NULL; 235 attr->single = 0; 236 attr->object = (ASN1_OBJECT*) OBJ_nid2obj(nid); 237 if (!req->req_info->attributes) 238 { 239 if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null())) 240 goto err; 241 } 242 if(!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr)) goto err; 243 return 1; 244 err: 245 X509_ATTRIBUTE_free(attr); 246 ASN1_TYPE_free(at); 247 return 0; 248 } 249 /* This is the normal usage: use the "official" OID */ 250 int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts) 251 { 252 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req); 253 } 254 255 /* Request attribute functions */ 256 257 int X509_REQ_get_attr_count(const X509_REQ *req) 258 { 259 return X509at_get_attr_count(req->req_info->attributes); 260 } 261 262 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, 263 int lastpos) 264 { 265 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos); 266 } 267 268 int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj, 269 int lastpos) 270 { 271 return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos); 272 } 273 274 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc) 275 { 276 return X509at_get_attr(req->req_info->attributes, loc); 277 } 278 279 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc) 280 { 281 return X509at_delete_attr(req->req_info->attributes, loc); 282 } 283 284 int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr) 285 { 286 if(X509at_add1_attr(&req->req_info->attributes, attr)) return 1; 287 return 0; 288 } 289 290 int X509_REQ_add1_attr_by_OBJ(X509_REQ *req, 291 const ASN1_OBJECT *obj, int type, 292 const unsigned char *bytes, int len) 293 { 294 if(X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj, 295 type, bytes, len)) return 1; 296 return 0; 297 } 298 299 int X509_REQ_add1_attr_by_NID(X509_REQ *req, 300 int nid, int type, 301 const unsigned char *bytes, int len) 302 { 303 if(X509at_add1_attr_by_NID(&req->req_info->attributes, nid, 304 type, bytes, len)) return 1; 305 return 0; 306 } 307 308 int X509_REQ_add1_attr_by_txt(X509_REQ *req, 309 const char *attrname, int type, 310 const unsigned char *bytes, int len) 311 { 312 if(X509at_add1_attr_by_txt(&req->req_info->attributes, attrname, 313 type, bytes, len)) return 1; 314 return 0; 315 } 316
