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 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 OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE); 79 goto err; 80 } 81 82 ri = ret->req_info; 83 84 ri->version->length = 1; 85 ri->version->data = (unsigned char *)OPENSSL_malloc(1); 86 if (ri->version->data == NULL) 87 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 if (pktmp == NULL) 95 goto err; 96 i = X509_REQ_set_pubkey(ret, pktmp); 97 EVP_PKEY_free(pktmp); 98 if (!i) 99 goto err; 100 101 if (pkey != NULL) { 102 if (!X509_REQ_sign(ret, pkey, md)) 103 goto err; 104 } 105 return (ret); 106 err: 107 X509_REQ_free(ret); 108 return (NULL); 109 } 110 111 EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req) 112 { 113 if ((req == NULL) || (req->req_info == NULL)) 114 return (NULL); 115 return (X509_PUBKEY_get(req->req_info->pubkey)); 116 } 117 118 int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k) 119 { 120 EVP_PKEY *xk = NULL; 121 int ok = 0; 122 123 xk = X509_REQ_get_pubkey(x); 124 switch (EVP_PKEY_cmp(xk, k)) { 125 case 1: 126 ok = 1; 127 break; 128 case 0: 129 OPENSSL_PUT_ERROR(X509, X509_R_KEY_VALUES_MISMATCH); 130 break; 131 case -1: 132 OPENSSL_PUT_ERROR(X509, X509_R_KEY_TYPE_MISMATCH); 133 break; 134 case -2: 135 if (k->type == EVP_PKEY_EC) { 136 OPENSSL_PUT_ERROR(X509, ERR_R_EC_LIB); 137 break; 138 } 139 if (k->type == EVP_PKEY_DH) { 140 /* No idea */ 141 OPENSSL_PUT_ERROR(X509, X509_R_CANT_CHECK_DH_KEY); 142 break; 143 } 144 OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_KEY_TYPE); 145 } 146 147 EVP_PKEY_free(xk); 148 return (ok); 149 } 150 151 /* 152 * It seems several organisations had the same idea of including a list of 153 * extensions in a certificate request. There are at least two OIDs that are 154 * used and there may be more: so the list is configurable. 155 */ 156 157 static const int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef }; 158 159 static const int *ext_nids = ext_nid_list; 160 161 int X509_REQ_extension_nid(int req_nid) 162 { 163 int i, nid; 164 for (i = 0;; i++) { 165 nid = ext_nids[i]; 166 if (nid == NID_undef) 167 return 0; 168 else if (req_nid == nid) 169 return 1; 170 } 171 } 172 173 const int *X509_REQ_get_extension_nids(void) 174 { 175 return ext_nids; 176 } 177 178 void X509_REQ_set_extension_nids(const int *nids) 179 { 180 ext_nids = nids; 181 } 182 183 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req) 184 { 185 X509_ATTRIBUTE *attr; 186 ASN1_TYPE *ext = NULL; 187 int idx; 188 const int *pnid; 189 const unsigned char *p; 190 191 if ((req == NULL) || (req->req_info == NULL) || !ext_nids) 192 return (NULL); 193 for (pnid = ext_nids; *pnid != NID_undef; pnid++) { 194 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1); 195 if (idx == -1) 196 continue; 197 attr = X509_REQ_get_attr(req, idx); 198 if (attr->single) 199 ext = attr->value.single; 200 else if (sk_ASN1_TYPE_num(attr->value.set)) 201 ext = sk_ASN1_TYPE_value(attr->value.set, 0); 202 break; 203 } 204 if (!ext || (ext->type != V_ASN1_SEQUENCE)) 205 return NULL; 206 p = ext->value.sequence->data; 207 return (STACK_OF(X509_EXTENSION) *) 208 ASN1_item_d2i(NULL, &p, ext->value.sequence->length, 209 ASN1_ITEM_rptr(X509_EXTENSIONS)); 210 } 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()) || !(at->value.sequence = ASN1_STRING_new())) 223 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())) 232 goto err; 233 if (!(attr->value.set = sk_ASN1_TYPE_new_null())) 234 goto err; 235 if (!sk_ASN1_TYPE_push(attr->value.set, at)) 236 goto err; 237 at = NULL; 238 attr->single = 0; 239 attr->object = (ASN1_OBJECT *)OBJ_nid2obj(nid); 240 if (!req->req_info->attributes) { 241 if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null())) 242 goto err; 243 } 244 if (!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr)) 245 goto err; 246 return 1; 247 err: 248 X509_ATTRIBUTE_free(attr); 249 ASN1_TYPE_free(at); 250 return 0; 251 } 252 253 /* This is the normal usage: use the "official" OID */ 254 int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts) 255 { 256 return X509_REQ_add_extensions_nid(req, exts, NID_ext_req); 257 } 258 259 /* Request attribute functions */ 260 261 int X509_REQ_get_attr_count(const X509_REQ *req) 262 { 263 return X509at_get_attr_count(req->req_info->attributes); 264 } 265 266 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos) 267 { 268 return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos); 269 } 270 271 int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj, 272 int lastpos) 273 { 274 return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos); 275 } 276 277 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc) 278 { 279 return X509at_get_attr(req->req_info->attributes, loc); 280 } 281 282 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc) 283 { 284 return X509at_delete_attr(req->req_info->attributes, loc); 285 } 286 287 int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr) 288 { 289 if (X509at_add1_attr(&req->req_info->attributes, attr)) 290 return 1; 291 return 0; 292 } 293 294 int X509_REQ_add1_attr_by_OBJ(X509_REQ *req, 295 const ASN1_OBJECT *obj, int type, 296 const unsigned char *bytes, int len) 297 { 298 if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj, 299 type, bytes, len)) 300 return 1; 301 return 0; 302 } 303 304 int X509_REQ_add1_attr_by_NID(X509_REQ *req, 305 int nid, int type, 306 const unsigned char *bytes, int len) 307 { 308 if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid, 309 type, bytes, len)) 310 return 1; 311 return 0; 312 } 313 314 int X509_REQ_add1_attr_by_txt(X509_REQ *req, 315 const char *attrname, int type, 316 const unsigned char *bytes, int len) 317 { 318 if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname, 319 type, bytes, len)) 320 return 1; 321 return 0; 322 } 323
