1 /* crypto/x509/x509_cmp.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 59 #include <stdio.h> 60 #include <ctype.h> 61 #include "cryptlib.h" 62 #include <openssl/asn1.h> 63 #include <openssl/objects.h> 64 #include <openssl/x509.h> 65 #include <openssl/x509v3.h> 66 67 int X509_issuer_and_serial_cmp(const X509 *a, const X509 *b) 68 { 69 int i; 70 X509_CINF *ai,*bi; 71 72 ai=a->cert_info; 73 bi=b->cert_info; 74 i=M_ASN1_INTEGER_cmp(ai->serialNumber,bi->serialNumber); 75 if (i) return(i); 76 return(X509_NAME_cmp(ai->issuer,bi->issuer)); 77 } 78 79 #ifndef OPENSSL_NO_MD5 80 unsigned long X509_issuer_and_serial_hash(X509 *a) 81 { 82 unsigned long ret=0; 83 EVP_MD_CTX ctx; 84 unsigned char md[16]; 85 char *f; 86 87 EVP_MD_CTX_init(&ctx); 88 f=X509_NAME_oneline(a->cert_info->issuer,NULL,0); 89 ret=strlen(f); 90 EVP_DigestInit_ex(&ctx, EVP_md5(), NULL); 91 EVP_DigestUpdate(&ctx,(unsigned char *)f,ret); 92 OPENSSL_free(f); 93 EVP_DigestUpdate(&ctx,(unsigned char *)a->cert_info->serialNumber->data, 94 (unsigned long)a->cert_info->serialNumber->length); 95 EVP_DigestFinal_ex(&ctx,&(md[0]),NULL); 96 ret=( ((unsigned long)md[0] )|((unsigned long)md[1]<<8L)| 97 ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L) 98 )&0xffffffffL; 99 EVP_MD_CTX_cleanup(&ctx); 100 return(ret); 101 } 102 #endif 103 104 int X509_issuer_name_cmp(const X509 *a, const X509 *b) 105 { 106 return(X509_NAME_cmp(a->cert_info->issuer,b->cert_info->issuer)); 107 } 108 109 int X509_subject_name_cmp(const X509 *a, const X509 *b) 110 { 111 return(X509_NAME_cmp(a->cert_info->subject,b->cert_info->subject)); 112 } 113 114 int X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b) 115 { 116 return(X509_NAME_cmp(a->crl->issuer,b->crl->issuer)); 117 } 118 119 #ifndef OPENSSL_NO_SHA 120 int X509_CRL_match(const X509_CRL *a, const X509_CRL *b) 121 { 122 return memcmp(a->sha1_hash, b->sha1_hash, 20); 123 } 124 #endif 125 126 X509_NAME *X509_get_issuer_name(X509 *a) 127 { 128 return(a->cert_info->issuer); 129 } 130 131 unsigned long X509_issuer_name_hash(X509 *x) 132 { 133 return(X509_NAME_hash(x->cert_info->issuer)); 134 } 135 136 #ifndef OPENSSL_NO_MD5 137 unsigned long X509_issuer_name_hash_old(X509 *x) 138 { 139 return(X509_NAME_hash_old(x->cert_info->issuer)); 140 } 141 #endif 142 143 X509_NAME *X509_get_subject_name(X509 *a) 144 { 145 return(a->cert_info->subject); 146 } 147 148 ASN1_INTEGER *X509_get_serialNumber(X509 *a) 149 { 150 return(a->cert_info->serialNumber); 151 } 152 153 unsigned long X509_subject_name_hash(X509 *x) 154 { 155 return(X509_NAME_hash(x->cert_info->subject)); 156 } 157 158 #ifndef OPENSSL_NO_MD5 159 unsigned long X509_subject_name_hash_old(X509 *x) 160 { 161 return(X509_NAME_hash_old(x->cert_info->subject)); 162 } 163 #endif 164 165 #ifndef OPENSSL_NO_SHA 166 /* Compare two certificates: they must be identical for 167 * this to work. NB: Although "cmp" operations are generally 168 * prototyped to take "const" arguments (eg. for use in 169 * STACKs), the way X509 handling is - these operations may 170 * involve ensuring the hashes are up-to-date and ensuring 171 * certain cert information is cached. So this is the point 172 * where the "depth-first" constification tree has to halt 173 * with an evil cast. 174 */ 175 int X509_cmp(const X509 *a, const X509 *b) 176 { 177 /* ensure hash is valid */ 178 X509_check_purpose((X509 *)a, -1, 0); 179 X509_check_purpose((X509 *)b, -1, 0); 180 181 return memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH); 182 } 183 #endif 184 185 186 int X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b) 187 { 188 int ret; 189 190 /* Ensure canonical encoding is present and up to date */ 191 192 if (!a->canon_enc || a->modified) 193 { 194 ret = i2d_X509_NAME((X509_NAME *)a, NULL); 195 if (ret < 0) 196 return -2; 197 } 198 199 if (!b->canon_enc || b->modified) 200 { 201 ret = i2d_X509_NAME((X509_NAME *)b, NULL); 202 if (ret < 0) 203 return -2; 204 } 205 206 ret = a->canon_enclen - b->canon_enclen; 207 208 if (ret) 209 return ret; 210 211 return memcmp(a->canon_enc, b->canon_enc, a->canon_enclen); 212 213 } 214 215 unsigned long X509_NAME_hash(X509_NAME *x) 216 { 217 unsigned long ret=0; 218 unsigned char md[SHA_DIGEST_LENGTH]; 219 220 /* Make sure X509_NAME structure contains valid cached encoding */ 221 i2d_X509_NAME(x,NULL); 222 EVP_Digest(x->canon_enc, x->canon_enclen, md, NULL, EVP_sha1(), NULL); 223 224 ret=( ((unsigned long)md[0] )|((unsigned long)md[1]<<8L)| 225 ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L) 226 )&0xffffffffL; 227 return(ret); 228 } 229 230 231 #ifndef OPENSSL_NO_MD5 232 /* I now DER encode the name and hash it. Since I cache the DER encoding, 233 * this is reasonably efficient. */ 234 235 unsigned long X509_NAME_hash_old(X509_NAME *x) 236 { 237 unsigned long ret=0; 238 unsigned char md[16]; 239 240 /* Make sure X509_NAME structure contains valid cached encoding */ 241 i2d_X509_NAME(x,NULL); 242 EVP_Digest(x->bytes->data, x->bytes->length, md, NULL, EVP_md5(), NULL); 243 244 ret=( ((unsigned long)md[0] )|((unsigned long)md[1]<<8L)| 245 ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L) 246 )&0xffffffffL; 247 return(ret); 248 } 249 #endif 250 251 /* Search a stack of X509 for a match */ 252 X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, X509_NAME *name, 253 ASN1_INTEGER *serial) 254 { 255 int i; 256 X509_CINF cinf; 257 X509 x,*x509=NULL; 258 259 if(!sk) return NULL; 260 261 x.cert_info= &cinf; 262 cinf.serialNumber=serial; 263 cinf.issuer=name; 264 265 for (i=0; i<sk_X509_num(sk); i++) 266 { 267 x509=sk_X509_value(sk,i); 268 if (X509_issuer_and_serial_cmp(x509,&x) == 0) 269 return(x509); 270 } 271 return(NULL); 272 } 273 274 X509 *X509_find_by_subject(STACK_OF(X509) *sk, X509_NAME *name) 275 { 276 X509 *x509; 277 int i; 278 279 for (i=0; i<sk_X509_num(sk); i++) 280 { 281 x509=sk_X509_value(sk,i); 282 if (X509_NAME_cmp(X509_get_subject_name(x509),name) == 0) 283 return(x509); 284 } 285 return(NULL); 286 } 287 288 EVP_PKEY *X509_get_pubkey(X509 *x) 289 { 290 if ((x == NULL) || (x->cert_info == NULL)) 291 return(NULL); 292 return(X509_PUBKEY_get(x->cert_info->key)); 293 } 294 295 ASN1_BIT_STRING *X509_get0_pubkey_bitstr(const X509 *x) 296 { 297 if(!x) return NULL; 298 return x->cert_info->key->public_key; 299 } 300 301 int X509_check_private_key(X509 *x, EVP_PKEY *k) 302 { 303 EVP_PKEY *xk; 304 int ret; 305 306 xk=X509_get_pubkey(x); 307 308 if (xk) 309 ret = EVP_PKEY_cmp(xk, k); 310 else 311 ret = -2; 312 313 switch (ret) 314 { 315 case 1: 316 break; 317 case 0: 318 X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH); 319 break; 320 case -1: 321 X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_KEY_TYPE_MISMATCH); 322 break; 323 case -2: 324 X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_UNKNOWN_KEY_TYPE); 325 } 326 if (xk) 327 EVP_PKEY_free(xk); 328 if (ret > 0) 329 return 1; 330 return 0; 331 } 332
