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d02b48c6 | 1 | /* crypto/x509/x509_cmp.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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> | |
d02b48c6 | 60 | #include "cryptlib.h" |
ec577822 BM |
61 | #include <openssl/asn1.h> |
62 | #include <openssl/objects.h> | |
63 | #include <openssl/x509.h> | |
e947f396 | 64 | #include <openssl/x509v3.h> |
d02b48c6 | 65 | |
ccd86b68 | 66 | int X509_issuer_and_serial_cmp(const X509 *a, const X509 *b) |
d02b48c6 RE |
67 | { |
68 | int i; | |
69 | X509_CINF *ai,*bi; | |
70 | ||
71 | ai=a->cert_info; | |
72 | bi=b->cert_info; | |
08e9c1af | 73 | i=M_ASN1_INTEGER_cmp(ai->serialNumber,bi->serialNumber); |
d02b48c6 RE |
74 | if (i) return(i); |
75 | return(X509_NAME_cmp(ai->issuer,bi->issuer)); | |
76 | } | |
77 | ||
78 | #ifndef NO_MD5 | |
6b691a5c | 79 | unsigned long X509_issuer_and_serial_hash(X509 *a) |
d02b48c6 RE |
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 | ||
ccd86b68 | 100 | int X509_issuer_name_cmp(const X509 *a, const X509 *b) |
d02b48c6 RE |
101 | { |
102 | return(X509_NAME_cmp(a->cert_info->issuer,b->cert_info->issuer)); | |
103 | } | |
104 | ||
ccd86b68 | 105 | int X509_subject_name_cmp(const X509 *a, const X509 *b) |
d02b48c6 RE |
106 | { |
107 | return(X509_NAME_cmp(a->cert_info->subject,b->cert_info->subject)); | |
108 | } | |
109 | ||
ccd86b68 | 110 | int X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b) |
d02b48c6 RE |
111 | { |
112 | return(X509_NAME_cmp(a->crl->issuer,b->crl->issuer)); | |
113 | } | |
114 | ||
6b691a5c | 115 | X509_NAME *X509_get_issuer_name(X509 *a) |
d02b48c6 RE |
116 | { |
117 | return(a->cert_info->issuer); | |
118 | } | |
119 | ||
6b691a5c | 120 | unsigned long X509_issuer_name_hash(X509 *x) |
d02b48c6 RE |
121 | { |
122 | return(X509_NAME_hash(x->cert_info->issuer)); | |
123 | } | |
124 | ||
6b691a5c | 125 | X509_NAME *X509_get_subject_name(X509 *a) |
d02b48c6 RE |
126 | { |
127 | return(a->cert_info->subject); | |
128 | } | |
129 | ||
6b691a5c | 130 | ASN1_INTEGER *X509_get_serialNumber(X509 *a) |
d02b48c6 RE |
131 | { |
132 | return(a->cert_info->serialNumber); | |
133 | } | |
134 | ||
6b691a5c | 135 | unsigned long X509_subject_name_hash(X509 *x) |
d02b48c6 RE |
136 | { |
137 | return(X509_NAME_hash(x->cert_info->subject)); | |
138 | } | |
731d9c5f UM |
139 | |
140 | #ifndef NO_SHA | |
e947f396 | 141 | /* Compare two certificates: they must be identical for |
ccd86b68 GT |
142 | * this to work. NB: Although "cmp" operations are generally |
143 | * prototyped to take "const" arguments (eg. for use in | |
144 | * STACKs), the way X509 handling is - these operations may | |
145 | * involve ensuring the hashes are up-to-date and ensuring | |
146 | * certain cert information is cached. So this is the point | |
147 | * where the "depth-first" constification tree has to halt | |
148 | * with an evil cast. | |
e947f396 | 149 | */ |
ccd86b68 | 150 | int X509_cmp(const X509 *a, const X509 *b) |
e947f396 DSH |
151 | { |
152 | /* ensure hash is valid */ | |
ccd86b68 GT |
153 | X509_check_purpose((X509 *)a, -1, 0); |
154 | X509_check_purpose((X509 *)b, -1, 0); | |
731d9c5f | 155 | |
e947f396 DSH |
156 | return memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH); |
157 | } | |
731d9c5f | 158 | #endif |
d02b48c6 | 159 | |
ccd86b68 | 160 | int X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b) |
d02b48c6 RE |
161 | { |
162 | int i,j; | |
163 | X509_NAME_ENTRY *na,*nb; | |
164 | ||
65d4927b BL |
165 | if (sk_X509_NAME_ENTRY_num(a->entries) |
166 | != sk_X509_NAME_ENTRY_num(b->entries)) | |
167 | return sk_X509_NAME_ENTRY_num(a->entries) | |
168 | -sk_X509_NAME_ENTRY_num(b->entries); | |
169 | for (i=sk_X509_NAME_ENTRY_num(a->entries)-1; i>=0; i--) | |
d02b48c6 | 170 | { |
65d4927b BL |
171 | na=sk_X509_NAME_ENTRY_value(a->entries,i); |
172 | nb=sk_X509_NAME_ENTRY_value(b->entries,i); | |
d02b48c6 RE |
173 | j=na->value->length-nb->value->length; |
174 | if (j) return(j); | |
175 | j=memcmp(na->value->data,nb->value->data, | |
176 | na->value->length); | |
177 | if (j) return(j); | |
178 | j=na->set-nb->set; | |
179 | if (j) return(j); | |
180 | } | |
181 | ||
182 | /* We will check the object types after checking the values | |
183 | * since the values will more often be different than the object | |
184 | * types. */ | |
65d4927b | 185 | for (i=sk_X509_NAME_ENTRY_num(a->entries)-1; i>=0; i--) |
d02b48c6 | 186 | { |
65d4927b BL |
187 | na=sk_X509_NAME_ENTRY_value(a->entries,i); |
188 | nb=sk_X509_NAME_ENTRY_value(b->entries,i); | |
d02b48c6 RE |
189 | j=OBJ_cmp(na->object,nb->object); |
190 | if (j) return(j); | |
191 | } | |
192 | return(0); | |
193 | } | |
194 | ||
195 | #ifndef NO_MD5 | |
58964a49 | 196 | /* I now DER encode the name and hash it. Since I cache the DER encoding, |
657e60fa | 197 | * this is reasonably efficient. */ |
6b691a5c | 198 | unsigned long X509_NAME_hash(X509_NAME *x) |
d02b48c6 RE |
199 | { |
200 | unsigned long ret=0; | |
201 | unsigned char md[16]; | |
58964a49 RE |
202 | unsigned char str[256],*p,*pp; |
203 | int i; | |
204 | ||
205 | i=i2d_X509_NAME(x,NULL); | |
206 | if (i > sizeof(str)) | |
26a3a48d | 207 | p=OPENSSL_malloc(i); |
58964a49 RE |
208 | else |
209 | p=str; | |
210 | ||
211 | pp=p; | |
212 | i2d_X509_NAME(x,&pp); | |
213 | MD5((unsigned char *)p,i,&(md[0])); | |
26a3a48d | 214 | if (p != str) OPENSSL_free(p); |
d02b48c6 | 215 | |
d02b48c6 RE |
216 | ret=( ((unsigned long)md[0] )|((unsigned long)md[1]<<8L)| |
217 | ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L) | |
218 | )&0xffffffffL; | |
219 | return(ret); | |
220 | } | |
221 | #endif | |
222 | ||
223 | /* Search a stack of X509 for a match */ | |
6b691a5c UM |
224 | X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, X509_NAME *name, |
225 | ASN1_INTEGER *serial) | |
d02b48c6 RE |
226 | { |
227 | int i; | |
228 | X509_CINF cinf; | |
229 | X509 x,*x509=NULL; | |
230 | ||
393f2c65 DSH |
231 | if(!sk) return NULL; |
232 | ||
d02b48c6 RE |
233 | x.cert_info= &cinf; |
234 | cinf.serialNumber=serial; | |
235 | cinf.issuer=name; | |
236 | ||
f73e07cf | 237 | for (i=0; i<sk_X509_num(sk); i++) |
d02b48c6 | 238 | { |
f73e07cf | 239 | x509=sk_X509_value(sk,i); |
d02b48c6 RE |
240 | if (X509_issuer_and_serial_cmp(x509,&x) == 0) |
241 | return(x509); | |
242 | } | |
58964a49 | 243 | return(NULL); |
d02b48c6 RE |
244 | } |
245 | ||
6b691a5c | 246 | X509 *X509_find_by_subject(STACK_OF(X509) *sk, X509_NAME *name) |
d02b48c6 RE |
247 | { |
248 | X509 *x509; | |
249 | int i; | |
250 | ||
f73e07cf | 251 | for (i=0; i<sk_X509_num(sk); i++) |
d02b48c6 | 252 | { |
f73e07cf | 253 | x509=sk_X509_value(sk,i); |
d02b48c6 RE |
254 | if (X509_NAME_cmp(X509_get_subject_name(x509),name) == 0) |
255 | return(x509); | |
256 | } | |
257 | return(NULL); | |
258 | } | |
259 | ||
6b691a5c | 260 | EVP_PKEY *X509_get_pubkey(X509 *x) |
dfeab068 RE |
261 | { |
262 | if ((x == NULL) || (x->cert_info == NULL)) | |
263 | return(NULL); | |
264 | return(X509_PUBKEY_get(x->cert_info->key)); | |
265 | } | |
266 | ||
6b691a5c | 267 | int X509_check_private_key(X509 *x, EVP_PKEY *k) |
dfeab068 RE |
268 | { |
269 | EVP_PKEY *xk=NULL; | |
270 | int ok=0; | |
271 | ||
272 | xk=X509_get_pubkey(x); | |
4004dbb7 BL |
273 | if (xk->type != k->type) |
274 | { | |
c9e4bc2f | 275 | X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_KEY_TYPE_MISMATCH); |
4004dbb7 BL |
276 | goto err; |
277 | } | |
dfeab068 RE |
278 | switch (k->type) |
279 | { | |
280 | #ifndef NO_RSA | |
281 | case EVP_PKEY_RSA: | |
4004dbb7 BL |
282 | if (BN_cmp(xk->pkey.rsa->n,k->pkey.rsa->n) != 0 |
283 | || BN_cmp(xk->pkey.rsa->e,k->pkey.rsa->e) != 0) | |
284 | { | |
c9e4bc2f | 285 | X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH); |
4004dbb7 BL |
286 | goto err; |
287 | } | |
dfeab068 RE |
288 | break; |
289 | #endif | |
290 | #ifndef NO_DSA | |
291 | case EVP_PKEY_DSA: | |
292 | if (BN_cmp(xk->pkey.dsa->pub_key,k->pkey.dsa->pub_key) != 0) | |
4004dbb7 | 293 | { |
c9e4bc2f | 294 | X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH); |
4004dbb7 BL |
295 | goto err; |
296 | } | |
dfeab068 RE |
297 | break; |
298 | #endif | |
299 | #ifndef NO_DH | |
300 | case EVP_PKEY_DH: | |
301 | /* No idea */ | |
c9e4bc2f | 302 | X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_CANT_CHECK_DH_KEY); |
dfeab068 RE |
303 | goto err; |
304 | #endif | |
305 | default: | |
c9e4bc2f | 306 | X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_UNKNOWN_KEY_TYPE); |
dfeab068 RE |
307 | goto err; |
308 | } | |
309 | ||
310 | ok=1; | |
311 | err: | |
10061c7c | 312 | EVP_PKEY_free(xk); |
dfeab068 RE |
313 | return(ok); |
314 | } |