1 /* crypto/x509/x509_cmp.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
62 #include <openssl/asn1.h>
63 #include <openssl/objects.h>
64 #include <openssl/x509.h>
65 #include <openssl/x509v3.h>
67 int X509_issuer_and_serial_cmp(const X509 *a, const X509 *b)
74 i = M_ASN1_INTEGER_cmp(ai->serialNumber, bi->serialNumber);
77 return (X509_NAME_cmp(ai->issuer, bi->issuer));
80 #ifndef OPENSSL_NO_MD5
81 unsigned long X509_issuer_and_serial_hash(X509 *a)
83 unsigned long ret = 0;
88 EVP_MD_CTX_init(&ctx);
89 f = X509_NAME_oneline(a->cert_info->issuer, NULL, 0);
91 EVP_DigestInit_ex(&ctx, EVP_md5(), NULL);
92 EVP_DigestUpdate(&ctx, (unsigned char *)f, ret);
94 EVP_DigestUpdate(&ctx, (unsigned char *)a->cert_info->serialNumber->data,
95 (unsigned long)a->cert_info->serialNumber->length);
96 EVP_DigestFinal_ex(&ctx, &(md[0]), NULL);
97 ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
98 ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)
100 EVP_MD_CTX_cleanup(&ctx);
105 int X509_issuer_name_cmp(const X509 *a, const X509 *b)
107 return (X509_NAME_cmp(a->cert_info->issuer, b->cert_info->issuer));
110 int X509_subject_name_cmp(const X509 *a, const X509 *b)
112 return (X509_NAME_cmp(a->cert_info->subject, b->cert_info->subject));
115 int X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b)
117 return (X509_NAME_cmp(a->crl->issuer, b->crl->issuer));
120 X509_NAME *X509_get_issuer_name(X509 *a)
122 return (a->cert_info->issuer);
125 unsigned long X509_issuer_name_hash(X509 *x)
127 return (X509_NAME_hash(x->cert_info->issuer));
130 X509_NAME *X509_get_subject_name(X509 *a)
132 return (a->cert_info->subject);
135 ASN1_INTEGER *X509_get_serialNumber(X509 *a)
137 return (a->cert_info->serialNumber);
140 unsigned long X509_subject_name_hash(X509 *x)
142 return (X509_NAME_hash(x->cert_info->subject));
145 #ifndef OPENSSL_NO_SHA
147 * Compare two certificates: they must be identical for this to work. NB:
148 * Although "cmp" operations are generally prototyped to take "const"
149 * arguments (eg. for use in STACKs), the way X509 handling is - these
150 * operations may involve ensuring the hashes are up-to-date and ensuring
151 * certain cert information is cached. So this is the point where the
152 * "depth-first" constification tree has to halt with an evil cast.
154 int X509_cmp(const X509 *a, const X509 *b)
156 /* ensure hash is valid */
157 X509_check_purpose((X509 *)a, -1, 0);
158 X509_check_purpose((X509 *)b, -1, 0);
160 return memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH);
164 /* Case insensitive string comparision */
165 static int nocase_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
169 if (a->length != b->length)
170 return (a->length - b->length);
172 for (i = 0; i < a->length; i++) {
175 ca = tolower(a->data[i]);
176 cb = tolower(b->data[i]);
185 * Case insensitive string comparision with space normalization Space
186 * normalization - ignore leading, trailing spaces, multiple spaces between
187 * characters are replaced by single space
189 static int nocase_spacenorm_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
191 unsigned char *pa = NULL, *pb = NULL;
199 /* skip leading spaces */
200 while (la > 0 && isspace(*pa)) {
204 while (lb > 0 && isspace(*pb)) {
209 /* skip trailing spaces */
210 while (la > 0 && isspace(pa[la - 1]))
212 while (lb > 0 && isspace(pb[lb - 1]))
215 /* compare strings with space normalization */
216 while (la > 0 && lb > 0) {
219 /* compare character */
230 if (la <= 0 || lb <= 0)
233 /* is white space next character ? */
234 if (isspace(*pa) && isspace(*pb)) {
235 /* skip remaining white spaces */
236 while (la > 0 && isspace(*pa)) {
240 while (lb > 0 && isspace(*pb)) {
246 if (la > 0 || lb > 0)
252 static int asn1_string_memcmp(ASN1_STRING *a, ASN1_STRING *b)
255 j = a->length - b->length;
258 return memcmp(a->data, b->data, a->length);
261 #define STR_TYPE_CMP (B_ASN1_PRINTABLESTRING|B_ASN1_T61STRING|B_ASN1_UTF8STRING)
263 int X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b)
266 X509_NAME_ENTRY *na, *nb;
268 unsigned long nabit, nbbit;
270 j = sk_X509_NAME_ENTRY_num(a->entries)
271 - sk_X509_NAME_ENTRY_num(b->entries);
274 for (i = sk_X509_NAME_ENTRY_num(a->entries) - 1; i >= 0; i--) {
275 na = sk_X509_NAME_ENTRY_value(a->entries, i);
276 nb = sk_X509_NAME_ENTRY_value(b->entries, i);
277 j = na->value->type - nb->value->type;
279 nabit = ASN1_tag2bit(na->value->type);
280 nbbit = ASN1_tag2bit(nb->value->type);
281 if (!(nabit & STR_TYPE_CMP) || !(nbbit & STR_TYPE_CMP))
283 if (!asn1_string_memcmp(na->value, nb->value))
285 } else if (na->value->type == V_ASN1_PRINTABLESTRING)
286 j = nocase_spacenorm_cmp(na->value, nb->value);
287 else if (na->value->type == V_ASN1_IA5STRING
288 && OBJ_obj2nid(na->object) == NID_pkcs9_emailAddress)
289 j = nocase_cmp(na->value, nb->value);
291 j = asn1_string_memcmp(na->value, nb->value);
294 j = na->set - nb->set;
300 * We will check the object types after checking the values since the
301 * values will more often be different than the object types.
303 for (i = sk_X509_NAME_ENTRY_num(a->entries) - 1; i >= 0; i--) {
304 na = sk_X509_NAME_ENTRY_value(a->entries, i);
305 nb = sk_X509_NAME_ENTRY_value(b->entries, i);
306 j = OBJ_cmp(na->object, nb->object);
313 #ifndef OPENSSL_NO_MD5
315 * I now DER encode the name and hash it. Since I cache the DER encoding,
316 * this is reasonably efficient.
318 unsigned long X509_NAME_hash(X509_NAME *x)
320 unsigned long ret = 0;
321 unsigned char md[16];
324 /* Make sure X509_NAME structure contains valid cached encoding */
325 i2d_X509_NAME(x, NULL);
326 EVP_MD_CTX_init(&md_ctx);
327 EVP_MD_CTX_set_flags(&md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
328 EVP_DigestInit_ex(&md_ctx, EVP_md5(), NULL);
329 EVP_DigestUpdate(&md_ctx, x->bytes->data, x->bytes->length);
330 EVP_DigestFinal_ex(&md_ctx, md, NULL);
331 EVP_MD_CTX_cleanup(&md_ctx);
333 ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
334 ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)
340 /* Search a stack of X509 for a match */
341 X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, X509_NAME *name,
342 ASN1_INTEGER *serial)
346 X509 x, *x509 = NULL;
352 cinf.serialNumber = serial;
355 for (i = 0; i < sk_X509_num(sk); i++) {
356 x509 = sk_X509_value(sk, i);
357 if (X509_issuer_and_serial_cmp(x509, &x) == 0)
363 X509 *X509_find_by_subject(STACK_OF(X509) *sk, X509_NAME *name)
368 for (i = 0; i < sk_X509_num(sk); i++) {
369 x509 = sk_X509_value(sk, i);
370 if (X509_NAME_cmp(X509_get_subject_name(x509), name) == 0)
376 EVP_PKEY *X509_get_pubkey(X509 *x)
378 if ((x == NULL) || (x->cert_info == NULL))
380 return (X509_PUBKEY_get(x->cert_info->key));
383 ASN1_BIT_STRING *X509_get0_pubkey_bitstr(const X509 *x)
387 return x->cert_info->key->public_key;
390 int X509_check_private_key(X509 *x, EVP_PKEY *k)
395 xk = X509_get_pubkey(x);
396 switch (EVP_PKEY_cmp(xk, k)) {
401 X509err(X509_F_X509_CHECK_PRIVATE_KEY, X509_R_KEY_VALUES_MISMATCH);
404 X509err(X509_F_X509_CHECK_PRIVATE_KEY, X509_R_KEY_TYPE_MISMATCH);
407 #ifndef OPENSSL_NO_EC
408 if (k->type == EVP_PKEY_EC) {
409 X509err(X509_F_X509_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
413 #ifndef OPENSSL_NO_DH
414 if (k->type == EVP_PKEY_DH) {
416 X509err(X509_F_X509_CHECK_PRIVATE_KEY, X509_R_CANT_CHECK_DH_KEY);
420 X509err(X509_F_X509_CHECK_PRIVATE_KEY, X509_R_UNKNOWN_KEY_TYPE);