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 i=X509_REQ_set_pubkey(ret,pktmp); 96 EVP_PKEY_free(pktmp); 97 if (!i) goto err; 98 99 if (pkey != NULL) 100 { 101 if (!X509_REQ_sign(ret,pkey,md)) 102 goto err; 103 } 104 return(ret); 105 err: 106 X509_REQ_free(ret); 107 return(NULL); 108 } 109 110 EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req) 111 { 112 if ((req == NULL) || (req->req_info == NULL)) 113 return(NULL); 114 return(X509_PUBKEY_get(req->req_info->pubkey)); 115 } 116 117 int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k) 118 { 119 EVP_PKEY *xk=NULL; 120 int ok=0; 121 122 xk=X509_REQ_get_pubkey(x); 123 switch (EVP_PKEY_cmp(xk, k)) 124 { 125 case 1: 126 ok=1; 127 break; 128 case 0: 129 OPENSSL_PUT_ERROR(X509, X509_REQ_check_private_key, X509_R_KEY_VALUES_MISMATCH); 130 break; 131 case -1: 132 OPENSSL_PUT_ERROR(X509, X509_REQ_check_private_key, X509_R_KEY_TYPE_MISMATCH); 133 break; 134 case -2: 135 if (k->type == EVP_PKEY_EC) 136 { 137 OPENSSL_PUT_ERROR(X509, X509_REQ_check_private_key, ERR_R_EC_LIB); 138 break; 139 } 140 if (k->type == EVP_PKEY_DH) 141 { 142 /* No idea */ 143 OPENSSL_PUT_ERROR(X509, X509_REQ_check_private_key, X509_R_CANT_CHECK_DH_KEY); 144 break; 145 } 146 OPENSSL_PUT_ERROR(X509, X509_REQ_check_private_key, X509_R_UNKNOWN_KEY_TYPE); 147 } 148 149 EVP_PKEY_free(xk); 150 return(ok); 151 } 152 153 /* It seems several organisations had the same idea of including a list of 154 * extensions in a certificate request. There are at least two OIDs that are 155 * used and there may be more: so the list is configurable. 156 */ 157 158 static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef}; 159 160 static int *ext_nids = ext_nid_list; 161 162 int X509_REQ_extension_nid(int req_nid) 163 { 164 int i, nid; 165 for(i = 0; ; i++) { 166 nid = ext_nids[i]; 167 if(nid == NID_undef) return 0; 168 else if (req_nid == nid) return 1; 169 } 170 } 171 172 int *X509_REQ_get_extension_nids(void) 173 { 174 return ext_nids; 175 } 176 177 void X509_REQ_set_extension_nids(int *nids) 178 { 179 ext_nids = nids; 180 } 181 182 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req) 183 { 184 X509_ATTRIBUTE *attr; 185 ASN1_TYPE *ext = NULL; 186 int idx, *pnid; 187 const unsigned char *p; 188 189 if ((req == NULL) || (req->req_info == NULL) || !ext_nids) 190 return(NULL); 191 for (pnid = ext_nids; *pnid != NID_undef; pnid++) 192 { 193 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1); 194 if (idx == -1) 195 continue; 196 attr = X509_REQ_get_attr(req, idx); 197 if(attr->single) ext = attr->value.single; 198 else if(sk_ASN1_TYPE_num(attr->value.set)) 199 ext = sk_ASN1_TYPE_value(attr->value.set, 0); 200 break; 201 } 202 if(!ext || (ext->type != V_ASN1_SEQUENCE)) 203 return NULL; 204 p = ext->value.sequence->data; 205 return (STACK_OF(X509_EXTENSION) *) 206 ASN1_item_d2i(NULL, &p, ext->value.sequence->length, 207 ASN1_ITEM_rptr(X509_EXTENSIONS)); 208 } 209 210 /* Add a STACK_OF extensions to a certificate request: allow alternative OIDs 211 * in case we want to create a non standard one. 212 */ 213 214 int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts, 215 int nid) 216 { 217 ASN1_TYPE *at = NULL; 218 X509_ATTRIBUTE *attr = NULL; 219 if(!(at = ASN1_TYPE_new()) || 220 !(at->value.sequence = ASN1_STRING_new())) goto err; 221 222 at->type = V_ASN1_SEQUENCE; 223 /* Generate encoding of extensions */ 224 at->value.sequence->length = 225 ASN1_item_i2d((ASN1_VALUE *)exts, 226 &at->value.sequence->data, 227 ASN1_ITEM_rptr(X509_EXTENSIONS)); 228 if(!(attr = X509_ATTRIBUTE_new())) goto err; 229 if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err; 230 if(!sk_ASN1_TYPE_push(attr->value.set, at)) goto err; 231 at = NULL; 232 attr->single = 0; 233 attr->object = (ASN1_OBJECT*) OBJ_nid2obj(nid); 234 if (!req->req_info->attributes) 235 { 236 if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null())) 237 goto err; 238 } 239 if(!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr)) goto err; 240 return 1; 241 err: 242 X509_ATTRIBUTE_free(attr); 243 ASN1_TYPE_free(at); 244 return 0; 245 } 246 /* This is the normal usage: use the "official" OID */ 247 int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts) 248 { 249 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req); 250 } 251 252 /* Request attribute functions */ 253 254 int X509_REQ_get_attr_count(const X509_REQ *req) 255 { 256 return X509at_get_attr_count(req->req_info->attributes); 257 } 258 259 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, 260 int lastpos) 261 { 262 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos); 263 } 264 265 int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj, 266 int lastpos) 267 { 268 return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos); 269 } 270 271 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc) 272 { 273 return X509at_get_attr(req->req_info->attributes, loc); 274 } 275 276 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc) 277 { 278 return X509at_delete_attr(req->req_info->attributes, loc); 279 } 280 281 int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr) 282 { 283 if(X509at_add1_attr(&req->req_info->attributes, attr)) return 1; 284 return 0; 285 } 286 287 int X509_REQ_add1_attr_by_OBJ(X509_REQ *req, 288 const ASN1_OBJECT *obj, int type, 289 const unsigned char *bytes, int len) 290 { 291 if(X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj, 292 type, bytes, len)) return 1; 293 return 0; 294 } 295 296 int X509_REQ_add1_attr_by_NID(X509_REQ *req, 297 int nid, int type, 298 const unsigned char *bytes, int len) 299 { 300 if(X509at_add1_attr_by_NID(&req->req_info->attributes, nid, 301 type, bytes, len)) return 1; 302 return 0; 303 } 304 305 int X509_REQ_add1_attr_by_txt(X509_REQ *req, 306 const char *attrname, int type, 307 const unsigned char *bytes, int len) 308 { 309 if(X509at_add1_attr_by_txt(&req->req_info->attributes, attrname, 310 type, bytes, len)) return 1; 311 return 0; 312 } 313
