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 if (!EVP_DigestInit_ex(&ctx, EVP_md5(), NULL)) 90 goto err; 91 if (!EVP_DigestUpdate(&ctx,(unsigned char *)f,strlen(f))) 92 goto err; 93 OPENSSL_free(f); 94 if(!EVP_DigestUpdate(&ctx,(unsigned char *)a->cert_info->serialNumber->data, 95 (unsigned long)a->cert_info->serialNumber->length)) 96 goto err; 97 if (!EVP_DigestFinal_ex(&ctx,&(md[0]),NULL)) 98 goto err; 99 ret=( ((unsigned long)md[0] )|((unsigned long)md[1]<<8L)| 100 ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L) 101 )&0xffffffffL; 102 err: 103 EVP_MD_CTX_cleanup(&ctx); 104 return(ret); 105 } 106 #endif 107 108 int X509_issuer_name_cmp(const X509 *a, const X509 *b) 109 { 110 return(X509_NAME_cmp(a->cert_info->issuer,b->cert_info->issuer)); 111 } 112 113 int X509_subject_name_cmp(const X509 *a, const X509 *b) 114 { 115 return(X509_NAME_cmp(a->cert_info->subject,b->cert_info->subject)); 116 } 117 118 int X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b) 119 { 120 return(X509_NAME_cmp(a->crl->issuer,b->crl->issuer)); 121 } 122 123 #ifndef OPENSSL_NO_SHA 124 int X509_CRL_match(const X509_CRL *a, const X509_CRL *b) 125 { 126 return memcmp(a->sha1_hash, b->sha1_hash, 20); 127 } 128 #endif 129 130 X509_NAME *X509_get_issuer_name(X509 *a) 131 { 132 return(a->cert_info->issuer); 133 } 134 135 unsigned long X509_issuer_name_hash(X509 *x) 136 { 137 return(X509_NAME_hash(x->cert_info->issuer)); 138 } 139 140 #ifndef OPENSSL_NO_MD5 141 unsigned long X509_issuer_name_hash_old(X509 *x) 142 { 143 return(X509_NAME_hash_old(x->cert_info->issuer)); 144 } 145 #endif 146 147 X509_NAME *X509_get_subject_name(X509 *a) 148 { 149 return(a->cert_info->subject); 150 } 151 152 ASN1_INTEGER *X509_get_serialNumber(X509 *a) 153 { 154 return(a->cert_info->serialNumber); 155 } 156 157 unsigned long X509_subject_name_hash(X509 *x) 158 { 159 return(X509_NAME_hash(x->cert_info->subject)); 160 } 161 162 #ifndef OPENSSL_NO_MD5 163 unsigned long X509_subject_name_hash_old(X509 *x) 164 { 165 return(X509_NAME_hash_old(x->cert_info->subject)); 166 } 167 #endif 168 169 #ifndef OPENSSL_NO_SHA 170 /* Compare two certificates: they must be identical for 171 * this to work. NB: Although "cmp" operations are generally 172 * prototyped to take "const" arguments (eg. for use in 173 * STACKs), the way X509 handling is - these operations may 174 * involve ensuring the hashes are up-to-date and ensuring 175 * certain cert information is cached. So this is the point 176 * where the "depth-first" constification tree has to halt 177 * with an evil cast. 178 */ 179 int X509_cmp(const X509 *a, const X509 *b) 180 { 181 /* ensure hash is valid */ 182 X509_check_purpose((X509 *)a, -1, 0); 183 X509_check_purpose((X509 *)b, -1, 0); 184 185 return memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH); 186 } 187 #endif 188 189 190 int X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b) 191 { 192 int ret; 193 194 /* Ensure canonical encoding is present and up to date */ 195 196 if (!a->canon_enc || a->modified) 197 { 198 ret = i2d_X509_NAME((X509_NAME *)a, NULL); 199 if (ret < 0) 200 return -2; 201 } 202 203 if (!b->canon_enc || b->modified) 204 { 205 ret = i2d_X509_NAME((X509_NAME *)b, NULL); 206 if (ret < 0) 207 return -2; 208 } 209 210 ret = a->canon_enclen - b->canon_enclen; 211 212 if (ret) 213 return ret; 214 215 return memcmp(a->canon_enc, b->canon_enc, a->canon_enclen); 216 217 } 218 219 unsigned long X509_NAME_hash(X509_NAME *x) 220 { 221 unsigned long ret=0; 222 unsigned char md[SHA_DIGEST_LENGTH]; 223 224 /* Make sure X509_NAME structure contains valid cached encoding */ 225 i2d_X509_NAME(x,NULL); 226 if (!EVP_Digest(x->canon_enc, x->canon_enclen, md, NULL, EVP_sha1(), 227 NULL)) 228 return 0; 229 230 ret=( ((unsigned long)md[0] )|((unsigned long)md[1]<<8L)| 231 ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L) 232 )&0xffffffffL; 233 return(ret); 234 } 235 236 237 #ifndef OPENSSL_NO_MD5 238 /* I now DER encode the name and hash it. Since I cache the DER encoding, 239 * this is reasonably efficient. */ 240 241 unsigned long X509_NAME_hash_old(X509_NAME *x) 242 { 243 EVP_MD_CTX md_ctx; 244 unsigned long ret=0; 245 unsigned char md[16]; 246 247 /* Make sure X509_NAME structure contains valid cached encoding */ 248 i2d_X509_NAME(x,NULL); 249 EVP_MD_CTX_init(&md_ctx); 250 EVP_MD_CTX_set_flags(&md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); 251 if (EVP_DigestInit_ex(&md_ctx, EVP_md5(), NULL) 252 && EVP_DigestUpdate(&md_ctx, x->bytes->data, x->bytes->length) 253 && EVP_DigestFinal_ex(&md_ctx,md,NULL)) 254 ret=(((unsigned long)md[0] )|((unsigned long)md[1]<<8L)| 255 ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L) 256 )&0xffffffffL; 257 EVP_MD_CTX_cleanup(&md_ctx); 258 259 return(ret); 260 } 261 #endif 262 263 /* Search a stack of X509 for a match */ 264 X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, X509_NAME *name, 265 ASN1_INTEGER *serial) 266 { 267 int i; 268 X509_CINF cinf; 269 X509 x,*x509=NULL; 270 271 if(!sk) return NULL; 272 273 x.cert_info= &cinf; 274 cinf.serialNumber=serial; 275 cinf.issuer=name; 276 277 for (i=0; i<sk_X509_num(sk); i++) 278 { 279 x509=sk_X509_value(sk,i); 280 if (X509_issuer_and_serial_cmp(x509,&x) == 0) 281 return(x509); 282 } 283 return(NULL); 284 } 285 286 X509 *X509_find_by_subject(STACK_OF(X509) *sk, X509_NAME *name) 287 { 288 X509 *x509; 289 int i; 290 291 for (i=0; i<sk_X509_num(sk); i++) 292 { 293 x509=sk_X509_value(sk,i); 294 if (X509_NAME_cmp(X509_get_subject_name(x509),name) == 0) 295 return(x509); 296 } 297 return(NULL); 298 } 299 300 EVP_PKEY *X509_get_pubkey(X509 *x) 301 { 302 if ((x == NULL) || (x->cert_info == NULL)) 303 return(NULL); 304 return(X509_PUBKEY_get(x->cert_info->key)); 305 } 306 307 ASN1_BIT_STRING *X509_get0_pubkey_bitstr(const X509 *x) 308 { 309 if(!x) return NULL; 310 return x->cert_info->key->public_key; 311 } 312 313 int X509_check_private_key(X509 *x, EVP_PKEY *k) 314 { 315 EVP_PKEY *xk; 316 int ret; 317 318 xk=X509_get_pubkey(x); 319 320 if (xk) 321 ret = EVP_PKEY_cmp(xk, k); 322 else 323 ret = -2; 324 325 switch (ret) 326 { 327 case 1: 328 break; 329 case 0: 330 X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH); 331 break; 332 case -1: 333 X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_KEY_TYPE_MISMATCH); 334 break; 335 case -2: 336 X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_UNKNOWN_KEY_TYPE); 337 } 338 if (xk) 339 EVP_PKEY_free(xk); 340 if (ret > 0) 341 return 1; 342 return 0; 343 } 344
