crypto/x509/x509_req.c

   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 "internal/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         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 = OPENSSL_malloc(1);
  87     if (ri->version->data == NULL)
  88         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)
 100         goto err;
 101
 102     if (pkey != NULL) {
 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     case 1:
 127         ok = 1;
 128         break;
 129     case 0:
 130         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
 131                 X509_R_KEY_VALUES_MISMATCH);
 132         break;
 133     case -1:
 134         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_KEY_TYPE_MISMATCH);
 135         break;
 136     case -2:
 137 #ifndef OPENSSL_NO_EC
 138         if (k->type == EVP_PKEY_EC) {
 139             X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
 140             break;
 141         }
 142 #endif
 143 #ifndef OPENSSL_NO_DH
 144         if (k->type == EVP_PKEY_DH) {
 145             /* No idea */
 146             X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
 147                     X509_R_CANT_CHECK_DH_KEY);
 148             break;
 149         }
 150 #endif
 151         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_UNKNOWN_KEY_TYPE);
 152     }
 153
 154     EVP_PKEY_free(xk);
 155     return (ok);
 156 }
 157
 158 /*
 159  * It seems several organisations had the same idea of including a list of
 160  * extensions in a certificate request. There are at least two OIDs that are
 161  * used and there may be more: so the list is configurable.
 162  */
 163
 164 static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };
 165
 166 static int *ext_nids = ext_nid_list;
 167
 168 int X509_REQ_extension_nid(int req_nid)
 169 {
 170     int i, nid;
 171     for (i = 0;; i++) {
 172         nid = ext_nids[i];
 173         if (nid == NID_undef)
 174             return 0;
 175         else if (req_nid == nid)
 176             return 1;
 177     }
 178 }
 179
 180 int *X509_REQ_get_extension_nids(void)
 181 {
 182     return ext_nids;
 183 }
 184
 185 void X509_REQ_set_extension_nids(int *nids)
 186 {
 187     ext_nids = nids;
 188 }
 189
 190 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
 191 {
 192     X509_ATTRIBUTE *attr;
 193     ASN1_TYPE *ext = NULL;
 194     int idx, *pnid;
 195     const unsigned char *p;
 196
 197     if ((req == NULL) || (req->req_info == NULL) || !ext_nids)
 198         return (NULL);
 199     for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
 200         idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
 201         if (idx == -1)
 202             continue;
 203         attr = X509_REQ_get_attr(req, idx);
 204         ext = X509_ATTRIBUTE_get0_type(attr, 0);
 205         break;
 206     }
 207     if (!ext || (ext->type != V_ASN1_SEQUENCE))
 208         return NULL;
 209     p = ext->value.sequence->data;
 210     return (STACK_OF(X509_EXTENSION) *)
 211         ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
 212                       ASN1_ITEM_rptr(X509_EXTENSIONS));
 213 }
 214
 215 /*
 216  * Add a STACK_OF extensions to a certificate request: allow alternative OIDs
 217  * in case we want to create a non standard one.
 218  */
 219
 220 int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
 221                                 int nid)
 222 {
 223     int extlen;
 224     int rv = 0;
 225     unsigned char *ext = NULL;
 226     /* Generate encoding of extensions */
 227     extlen = ASN1_item_i2d((ASN1_VALUE *)exts, &ext,
 228                            ASN1_ITEM_rptr(X509_EXTENSIONS));
 229     if (extlen <= 0)
 230         return 0;
 231     rv = X509_REQ_add1_attr_by_NID(req, nid, V_ASN1_SEQUENCE, ext, extlen);
 232     OPENSSL_free(ext);
 233     return rv;
 234 }
 235
 236 /* This is the normal usage: use the "official" OID */
 237 int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
 238 {
 239     return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
 240 }
 241
 242 /* Request attribute functions */
 243
 244 int X509_REQ_get_attr_count(const X509_REQ *req)
 245 {
 246     return X509at_get_attr_count(req->req_info->attributes);
 247 }
 248
 249 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
 250 {
 251     return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos);
 252 }
 253
 254 int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
 255                              int lastpos)
 256 {
 257     return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos);
 258 }
 259
 260 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
 261 {
 262     return X509at_get_attr(req->req_info->attributes, loc);
 263 }
 264
 265 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
 266 {
 267     return X509at_delete_attr(req->req_info->attributes, loc);
 268 }
 269
 270 int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
 271 {
 272     if (X509at_add1_attr(&req->req_info->attributes, attr))
 273         return 1;
 274     return 0;
 275 }
 276
 277 int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
 278                               const ASN1_OBJECT *obj, int type,
 279                               const unsigned char *bytes, int len)
 280 {
 281     if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj,
 282                                 type, bytes, len))
 283         return 1;
 284     return 0;
 285 }
 286
 287 int X509_REQ_add1_attr_by_NID(X509_REQ *req,
 288                               int nid, int type,
 289                               const unsigned char *bytes, int len)
 290 {
 291     if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid,
 292                                 type, bytes, len))
 293         return 1;
 294     return 0;
 295 }
 296
 297 int X509_REQ_add1_attr_by_txt(X509_REQ *req,
 298                               const char *attrname, int type,
 299                               const unsigned char *bytes, int len)
 300 {
 301     if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname,
 302                                 type, bytes, len))
 303         return 1;
 304     return 0;
 305 }