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 "internal/x509_int.h"
  67 #include <openssl/objects.h>
  68 #include <openssl/buffer.h>
  69 #include <openssl/pem.h>
  70
  71 X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
  72 {
  73     X509_REQ *ret;
  74     X509_REQ_INFO *ri;
  75     int i;
  76     EVP_PKEY *pktmp;
  77
  78     ret = X509_REQ_new();
  79     if (ret == NULL) {
  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 = OPENSSL_malloc(1);
  88     if (ri->version->data == NULL)
  89         goto err;
  90     ri->version->data[0] = 0;   /* version == 0 */
  91
  92     if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x)))
  93         goto err;
  94
  95     pktmp = X509_get_pubkey(x);
  96     if (pktmp == NULL)
  97         goto err;
  98     i = X509_REQ_set_pubkey(ret, pktmp);
  99     EVP_PKEY_free(pktmp);
 100     if (!i)
 101         goto err;
 102
 103     if (pkey != NULL) {
 104         if (!X509_REQ_sign(ret, pkey, md))
 105             goto err;
 106     }
 107     return (ret);
 108  err:
 109     X509_REQ_free(ret);
 110     return (NULL);
 111 }
 112
 113 EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
 114 {
 115     if ((req == NULL) || (req->req_info == NULL))
 116         return (NULL);
 117     return (X509_PUBKEY_get(req->req_info->pubkey));
 118 }
 119
 120 int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k)
 121 {
 122     EVP_PKEY *xk = NULL;
 123     int ok = 0;
 124
 125     xk = X509_REQ_get_pubkey(x);
 126     switch (EVP_PKEY_cmp(xk, k)) {
 127     case 1:
 128         ok = 1;
 129         break;
 130     case 0:
 131         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
 132                 X509_R_KEY_VALUES_MISMATCH);
 133         break;
 134     case -1:
 135         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_KEY_TYPE_MISMATCH);
 136         break;
 137     case -2:
 138 #ifndef OPENSSL_NO_EC
 139         if (k->type == EVP_PKEY_EC) {
 140             X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
 141             break;
 142         }
 143 #endif
 144 #ifndef OPENSSL_NO_DH
 145         if (k->type == EVP_PKEY_DH) {
 146             /* No idea */
 147             X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
 148                     X509_R_CANT_CHECK_DH_KEY);
 149             break;
 150         }
 151 #endif
 152         X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_UNKNOWN_KEY_TYPE);
 153     }
 154
 155     EVP_PKEY_free(xk);
 156     return (ok);
 157 }
 158
 159 /*
 160  * It seems several organisations had the same idea of including a list of
 161  * extensions in a certificate request. There are at least two OIDs that are
 162  * used and there may be more: so the list is configurable.
 163  */
 164
 165 static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };
 166
 167 static int *ext_nids = ext_nid_list;
 168
 169 int X509_REQ_extension_nid(int req_nid)
 170 {
 171     int i, nid;
 172     for (i = 0;; i++) {
 173         nid = ext_nids[i];
 174         if (nid == NID_undef)
 175             return 0;
 176         else if (req_nid == nid)
 177             return 1;
 178     }
 179 }
 180
 181 int *X509_REQ_get_extension_nids(void)
 182 {
 183     return ext_nids;
 184 }
 185
 186 void X509_REQ_set_extension_nids(int *nids)
 187 {
 188     ext_nids = nids;
 189 }
 190
 191 STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
 192 {
 193     X509_ATTRIBUTE *attr;
 194     ASN1_TYPE *ext = NULL;
 195     int idx, *pnid;
 196     const unsigned char *p;
 197
 198     if ((req == NULL) || (req->req_info == NULL) || !ext_nids)
 199         return (NULL);
 200     for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
 201         idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
 202         if (idx == -1)
 203             continue;
 204         attr = X509_REQ_get_attr(req, idx);
 205         ext = X509_ATTRIBUTE_get0_type(attr, 0);
 206         break;
 207     }
 208     if (!ext || (ext->type != V_ASN1_SEQUENCE))
 209         return NULL;
 210     p = ext->value.sequence->data;
 211     return (STACK_OF(X509_EXTENSION) *)
 212         ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
 213                       ASN1_ITEM_rptr(X509_EXTENSIONS));
 214 }
 215
 216 /*
 217  * Add a STACK_OF extensions to a certificate request: allow alternative OIDs
 218  * in case we want to create a non standard one.
 219  */
 220
 221 int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
 222                                 int nid)
 223 {
 224     int extlen;
 225     int rv = 0;
 226     unsigned char *ext = NULL;
 227     /* Generate encoding of extensions */
 228     extlen = ASN1_item_i2d((ASN1_VALUE *)exts, &ext,
 229                            ASN1_ITEM_rptr(X509_EXTENSIONS));
 230     if (extlen <= 0)
 231         return 0;
 232     rv = X509_REQ_add1_attr_by_NID(req, nid, V_ASN1_SEQUENCE, ext, extlen);
 233     OPENSSL_free(ext);
 234     return rv;
 235 }
 236
 237 /* This is the normal usage: use the "official" OID */
 238 int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
 239 {
 240     return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
 241 }
 242
 243 /* Request attribute functions */
 244
 245 int X509_REQ_get_attr_count(const X509_REQ *req)
 246 {
 247     return X509at_get_attr_count(req->req_info->attributes);
 248 }
 249
 250 int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
 251 {
 252     return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos);
 253 }
 254
 255 int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, ASN1_OBJECT *obj,
 256                              int lastpos)
 257 {
 258     return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos);
 259 }
 260
 261 X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
 262 {
 263     return X509at_get_attr(req->req_info->attributes, loc);
 264 }
 265
 266 X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
 267 {
 268     return X509at_delete_attr(req->req_info->attributes, loc);
 269 }
 270
 271 int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
 272 {
 273     if (X509at_add1_attr(&req->req_info->attributes, attr))
 274         return 1;
 275     return 0;
 276 }
 277
 278 int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
 279                               const ASN1_OBJECT *obj, int type,
 280                               const unsigned char *bytes, int len)
 281 {
 282     if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj,
 283                                 type, bytes, len))
 284         return 1;
 285     return 0;
 286 }
 287
 288 int X509_REQ_add1_attr_by_NID(X509_REQ *req,
 289                               int nid, int type,
 290                               const unsigned char *bytes, int len)
 291 {
 292     if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid,
 293                                 type, bytes, len))
 294         return 1;
 295     return 0;
 296 }
 297
 298 int X509_REQ_add1_attr_by_txt(X509_REQ *req,
 299                               const char *attrname, int type,
 300                               const unsigned char *bytes, int len)
 301 {
 302     if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname,
 303                                 type, bytes, len))
 304         return 1;
 305     return 0;
 306 }
 307
 308 long X509_REQ_get_version(X509_REQ *req)
 309 {
 310     return ASN1_INTEGER_get(req->req_info->version);
 311 }
 312
 313 X509_NAME *X509_REQ_get_subject_name(X509_REQ *req)
 314 {
 315     return req->req_info->subject;
 316 }