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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 <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->d
ata, | |
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 } | |
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