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 <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 }