Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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 | } |