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1/* crypto/x509/x509_cmp.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/asn1.h>
62#include <openssl/objects.h>
63#include <openssl/x509.h>
64#include <openssl/x509v3.h>
65
66int X509_issuer_and_serial_cmp(X509 *a, X509 *b)
67 {
68 int i;
69 X509_CINF *ai,*bi;
70
71 ai=a->cert_info;
72 bi=b->cert_info;
73 i=M_ASN1_INTEGER_cmp(ai->serialNumber,bi->serialNumber);
74 if (i) return(i);
75 return(X509_NAME_cmp(ai->issuer,bi->issuer));
76 }
77
78#ifndef NO_MD5
79unsigned long X509_issuer_and_serial_hash(X509 *a)
80 {
81 unsigned long ret=0;
82 MD5_CTX ctx;
83 unsigned char md[16];
84 char str[256];
85
86 X509_NAME_oneline(a->cert_info->issuer,str,256);
87 ret=strlen(str);
88 MD5_Init(&ctx);
89 MD5_Update(&ctx,(unsigned char *)str,ret);
90 MD5_Update(&ctx,(unsigned char *)a->cert_info->serialNumber->data,
91 (unsigned long)a->cert_info->serialNumber->length);
92 MD5_Final(&(md[0]),&ctx);
93 ret=( ((unsigned long)md[0] )|((unsigned long)md[1]<<8L)|
94 ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L)
95 )&0xffffffffL;
96 return(ret);
97 }
98#endif
99
100int X509_issuer_name_cmp(X509 *a, X509 *b)
101 {
102 return(X509_NAME_cmp(a->cert_info->issuer,b->cert_info->issuer));
103 }
104
105int X509_subject_name_cmp(X509 *a, X509 *b)
106 {
107 return(X509_NAME_cmp(a->cert_info->subject,b->cert_info->subject));
108 }
109
110int X509_CRL_cmp(X509_CRL *a, X509_CRL *b)
111 {
112 return(X509_NAME_cmp(a->crl->issuer,b->crl->issuer));
113 }
114
115X509_NAME *X509_get_issuer_name(X509 *a)
116 {
117 return(a->cert_info->issuer);
118 }
119
120unsigned long X509_issuer_name_hash(X509 *x)
121 {
122 return(X509_NAME_hash(x->cert_info->issuer));
123 }
124
125X509_NAME *X509_get_subject_name(X509 *a)
126 {
127 return(a->cert_info->subject);
128 }
129
130ASN1_INTEGER *X509_get_serialNumber(X509 *a)
131 {
132 return(a->cert_info->serialNumber);
133 }
134
135unsigned long X509_subject_name_hash(X509 *x)
136 {
137 return(X509_NAME_hash(x->cert_info->subject));
138 }
139
140#ifndef NO_SHA
141/* Compare two certificates: they must be identical for
142 * this to work.
143 */
144int X509_cmp(X509 *a, X509 *b)
145{
146 /* ensure hash is valid */
147 X509_check_purpose(a, -1, 0);
148 X509_check_purpose(b, -1, 0);
149
150 return memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH);
151}
152#endif
153
154int X509_NAME_cmp(X509_NAME *a, X509_NAME *b)
155 {
156 int i,j;
157 X509_NAME_ENTRY *na,*nb;
158
159 if (sk_X509_NAME_ENTRY_num(a->entries)
160 != sk_X509_NAME_ENTRY_num(b->entries))
161 return sk_X509_NAME_ENTRY_num(a->entries)
162 -sk_X509_NAME_ENTRY_num(b->entries);
163 for (i=sk_X509_NAME_ENTRY_num(a->entries)-1; i>=0; i--)
164 {
165 na=sk_X509_NAME_ENTRY_value(a->entries,i);
166 nb=sk_X509_NAME_ENTRY_value(b->entries,i);
167 j=na->value->length-nb->value->length;
168 if (j) return(j);
169 j=memcmp(na->value->data,nb->value->data,
170 na->value->length);
171 if (j) return(j);
172 j=na->set-nb->set;
173 if (j) return(j);
174 }
175
176 /* We will check the object types after checking the values
177 * since the values will more often be different than the object
178 * types. */
179 for (i=sk_X509_NAME_ENTRY_num(a->entries)-1; i>=0; i--)
180 {
181 na=sk_X509_NAME_ENTRY_value(a->entries,i);
182 nb=sk_X509_NAME_ENTRY_value(b->entries,i);
183 j=OBJ_cmp(na->object,nb->object);
184 if (j) return(j);
185 }
186 return(0);
187 }
188
189#ifndef NO_MD5
190/* I now DER encode the name and hash it. Since I cache the DER encoding,
191 * this is reasonably efficient. */
192unsigned long X509_NAME_hash(X509_NAME *x)
193 {
194 unsigned long ret=0;
195 unsigned char md[16];
196 unsigned char str[256],*p,*pp;
197 int i;
198
199 i=i2d_X509_NAME(x,NULL);
200 if (i > sizeof(str))
201 p=Malloc(i);
202 else
203 p=str;
204
205 pp=p;
206 i2d_X509_NAME(x,&pp);
207 MD5((unsigned char *)p,i,&(md[0]));
208 if (p != str) Free(p);
209
210 ret=( ((unsigned long)md[0] )|((unsigned long)md[1]<<8L)|
211 ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L)
212 )&0xffffffffL;
213 return(ret);
214 }
215#endif
216
217/* Search a stack of X509 for a match */
218X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, X509_NAME *name,
219 ASN1_INTEGER *serial)
220 {
221 int i;
222 X509_CINF cinf;
223 X509 x,*x509=NULL;
224
225 if(!sk) return NULL;
226
227 x.cert_info= &cinf;
228 cinf.serialNumber=serial;
229 cinf.issuer=name;
230
231 for (i=0; i<sk_X509_num(sk); i++)
232 {
233 x509=sk_X509_value(sk,i);
234 if (X509_issuer_and_serial_cmp(x509,&x) == 0)
235 return(x509);
236 }
237 return(NULL);
238 }
239
240X509 *X509_find_by_subject(STACK_OF(X509) *sk, X509_NAME *name)
241 {
242 X509 *x509;
243 int i;
244
245 for (i=0; i<sk_X509_num(sk); i++)
246 {
247 x509=sk_X509_value(sk,i);
248 if (X509_NAME_cmp(X509_get_subject_name(x509),name) == 0)
249 return(x509);
250 }
251 return(NULL);
252 }
253
254EVP_PKEY *X509_get_pubkey(X509 *x)
255 {
256 if ((x == NULL) || (x->cert_info == NULL))
257 return(NULL);
258 return(X509_PUBKEY_get(x->cert_info->key));
259 }
260
261int X509_check_private_key(X509 *x, EVP_PKEY *k)
262 {
263 EVP_PKEY *xk=NULL;
264 int ok=0;
265
266 xk=X509_get_pubkey(x);
267 if (xk->type != k->type)
268 {
269 X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_KEY_TYPE_MISMATCH);
270 goto err;
271 }
272 switch (k->type)
273 {
274#ifndef NO_RSA
275 case EVP_PKEY_RSA:
276 if (BN_cmp(xk->pkey.rsa->n,k->pkey.rsa->n) != 0
277 || BN_cmp(xk->pkey.rsa->e,k->pkey.rsa->e) != 0)
278 {
279 X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH);
280 goto err;
281 }
282 break;
283#endif
284#ifndef NO_DSA
285 case EVP_PKEY_DSA:
286 if (BN_cmp(xk->pkey.dsa->pub_key,k->pkey.dsa->pub_key) != 0)
287 {
288 X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH);
289 goto err;
290 }
291 break;
292#endif
293#ifndef NO_DH
294 case EVP_PKEY_DH:
295 /* No idea */
296 X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_CANT_CHECK_DH_KEY);
297 goto err;
298#endif
299 default:
300 X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_UNKNOWN_KEY_TYPE);
301 goto err;
302 }
303
304 ok=1;
305err:
306 EVP_PKEY_free(xk);
307 return(ok);
308 }
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