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/asn1t.h>
  65 #include <openssl/x509.h>
  66 #include <openssl/objects.h>
  67 #include <openssl/buffer.h>
  68 #include <openssl/pem.h>
  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                 X509err(X509_F_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                 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH);
 130                 break;
 131         case -1:
 132                 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_KEY_TYPE_MISMATCH);
 133                 break;
 134         case -2:
 135 #ifndef OPENSSL_NO_EC
 136                 if (k->type == EVP_PKEY_EC)
 137                         {
 138                         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
 139                         break;
 140                         }
 141 #endif
 142 #ifndef OPENSSL_NO_DH
 143                 if (k->type == EVP_PKEY_DH)
 144                         {
 145                         /* No idea */
 146                         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_CANT_CHECK_DH_KEY);
 147                         break;
 148                         }
 149 #endif
 150                 X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,X509_R_UNKNOWN_KEY_TYPE);
 151                 }
 152 
 153         EVP_PKEY_free(xk);
 154         return(ok);
 155         }
 156 
 157 /* It seems several organisations had the same idea of including a list of
 158  * extensions in a certificate request. There are at least two OIDs that are
 159  * used and there may be more: so the list is configurable.
 160  */
 161 
 162 static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef};
 163 
 164 static int *ext_nids = ext_nid_list;
 165 
 166 int X509_REQ_extension_nid(int req_nid)
 167 {
 168         int i, nid;
 169         for(i = 0; ; i++) {
 170                 nid = ext_nids[i];
 171                 if(nid == NID_undef) return 0;
 172                 else if (req_nid == nid) return 1;
 173         }
 174 }
 175 
 176 int *X509_REQ_get_extension_nids(void)
 177 {
 178         return ext_nids;
 179 }
 180 
 181 void X509_REQ_set_extension_nids(int *nids)
 182 {
 183         ext_nids = nids;
 184 }
 185 
 186 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
 187         {
 188         X509_ATTRIBUTE *attr;
 189         ASN1_TYPE *ext = NULL;
 190         int idx, *pnid;
 191         const unsigned char *p;
 192 
 193         if ((req == NULL) || (req->req_info == NULL) || !ext_nids)
 194                 return(NULL);
 195         for (pnid = ext_nids; *pnid != NID_undef; pnid++)
 196                 {
 197                 idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
 198                 if (idx == -1)
 199                         continue;
 200                 attr = X509_REQ_get_attr(req, idx);
 201                 if(attr->single) ext = attr->value.single;
 202                 else if(sk_ASN1_TYPE_num(attr->value.set))
 203                         ext = sk_ASN1_TYPE_value(attr->value.set, 0);
 204                 break;
 205                 }
 206         if(!ext || (ext->type != V_ASN1_SEQUENCE))
 207                 return NULL;
 208         p = ext->value.sequence->data;
 209         return (STACK_OF(X509_EXTENSION) *)
 210                 ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
 211                                 ASN1_ITEM_rptr(X509_EXTENSIONS));
 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         ASN1_TYPE *at = NULL;
 222         X509_ATTRIBUTE *attr = NULL;
 223         if(!(at = ASN1_TYPE_new()) ||
 224                 !(at->value.sequence = ASN1_STRING_new())) goto err;
 225 
 226         at->type = V_ASN1_SEQUENCE;
 227         /* Generate encoding of extensions */
 228         at->value.sequence->length =
 229                         ASN1_item_i2d((ASN1_VALUE *)exts,
 230                                 &at->value.sequence->data,
 231                                 ASN1_ITEM_rptr(X509_EXTENSIONS));
 232         if(!(attr = X509_ATTRIBUTE_new())) goto err;
 233         if(!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err;
 234         if(!sk_ASN1_TYPE_push(attr->value.set, at)) goto err;
 235         at = NULL;
 236         attr->single = 0;
 237         attr->object = OBJ_nid2obj(nid);
 238         if (!req->req_info->attributes)
 239                 {
 240                 if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null()))
 241                         goto err;
 242                 }
 243         if(!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr)) goto err;
 244         return 1;
 245         err:
 246         X509_ATTRIBUTE_free(attr);
 247         ASN1_TYPE_free(at);
 248         return 0;
 249 }
 250 /* This is the normal usage: use the "official" OID */
 251 int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
 252 {
 253         return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
 254 }
 255 
 256 /* Request attribute functions */
 257 
 258 int X509_REQ_get_attr_count(const X509_REQ *req)
 259 {
 260         return X509at_get_attr_count(req->req_info->attributes);
 261 }
 262 
 263 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid,
 264                           int lastpos)
 265 {
 266         return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos);
 267 }
 268 
 269 int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
 270                           int lastpos)
 271 {
 272         return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos);
 273 }
 274 
 275 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
 276 {
 277         return X509at_get_attr(req->req_info->attributes, loc);
 278 }
 279 
 280 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
 281 {
 282         return X509at_delete_attr(req->req_info->attributes, loc);
 283 }
 284 
 285 int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
 286 {
 287         if(X509at_add1_attr(&req->req_info->attributes, attr)) return 1;
 288         return 0;
 289 }
 290 
 291 int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
 292                         const ASN1_OBJECT *obj, int type,
 293                         const unsigned char *bytes, int len)
 294 {
 295         if(X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj,
 296                                 type, bytes, len)) return 1;
 297         return 0;
 298 }
 299 
 300 int X509_REQ_add1_attr_by_NID(X509_REQ *req,
 301                         int nid, int type,
 302                         const unsigned char *bytes, int len)
 303 {
 304         if(X509at_add1_attr_by_NID(&req->req_info->attributes, nid,
 305                                 type, bytes, len)) return 1;
 306         return 0;
 307 }
 308 
 309 int X509_REQ_add1_attr_by_txt(X509_REQ *req,
 310                         const char *attrname, int type,
 311                         const unsigned char *bytes, int len)
 312 {
 313         if(X509at_add1_attr_by_txt(&req->req_info->attributes, attrname,
 314                                 type, bytes, len)) return 1;
 315         return 0;
 316 }