Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/crypto/../../libssl/src/crypto/x509/x509_cmp.c	Lines:	45	111	40.5 %
Date:	2016-12-06	Branches:	16	58	27.6 %


/* $OpenBSD: x509_cmp.c,v 1.26 2015/07/29 14:58:34 jsing Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <ctype.h>
#include <stdio.h>
#include <string.h>

#include <openssl/opensslconf.h>

#include <openssl/asn1.h>
#include <openssl/err.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>

int
X509_issuer_and_serial_cmp(const X509 *a, const X509 *b)
{
	int i;
	X509_CINF *ai, *bi;

	ai = a->cert_info;
	bi = b->cert_info;
	i = ASN1_STRING_cmp(ai->serialNumber, bi->serialNumber);
	if (i)
		return (i);
	return (X509_NAME_cmp(ai->issuer, bi->issuer));
}

#ifndef OPENSSL_NO_MD5
unsigned long
X509_issuer_and_serial_hash(X509 *a)
{
	unsigned long ret = 0;
	EVP_MD_CTX ctx;
	unsigned char md[16];
	char *f;

	EVP_MD_CTX_init(&ctx);
	f = X509_NAME_oneline(a->cert_info->issuer, NULL, 0);
	if (f == NULL)
		goto err;
	if (!EVP_DigestInit_ex(&ctx, EVP_md5(), NULL))
		goto err;
	if (!EVP_DigestUpdate(&ctx, (unsigned char *)f, strlen(f)))
		goto err;
	free(f);
	f = NULL;
	if (!EVP_DigestUpdate(&ctx,
	    (unsigned char *)a->cert_info->serialNumber->data,
	    (unsigned long)a->cert_info->serialNumber->length))
		goto err;
	if (!EVP_DigestFinal_ex(&ctx, &(md[0]), NULL))
		goto err;
	ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
	    ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)) &
	    0xffffffffL;

err:
	EVP_MD_CTX_cleanup(&ctx);
	free(f);
	return (ret);
}
#endif

int
X509_issuer_name_cmp(const X509 *a, const X509 *b)
{
	return (X509_NAME_cmp(a->cert_info->issuer, b->cert_info->issuer));
}

int
X509_subject_name_cmp(const X509 *a, const X509 *b)
{
	return (X509_NAME_cmp(a->cert_info->subject, b->cert_info->subject));
}

int
X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b)
{
	return (X509_NAME_cmp(a->crl->issuer, b->crl->issuer));
}

#ifndef OPENSSL_NO_SHA
int
X509_CRL_match(const X509_CRL *a, const X509_CRL *b)
{
	return memcmp(a->sha1_hash, b->sha1_hash, 20);
}
#endif

X509_NAME *
X509_get_issuer_name(X509 *a)
{
	return (a->cert_info->issuer);
}

unsigned long
X509_issuer_name_hash(X509 *x)
{
	return (X509_NAME_hash(x->cert_info->issuer));
}

#ifndef OPENSSL_NO_MD5
unsigned long
X509_issuer_name_hash_old(X509 *x)
{
	return (X509_NAME_hash_old(x->cert_info->issuer));
}
#endif

X509_NAME *
X509_get_subject_name(X509 *a)
{
	return (a->cert_info->subject);
}

ASN1_INTEGER *
X509_get_serialNumber(X509 *a)
{
	return (a->cert_info->serialNumber);
}

unsigned long
X509_subject_name_hash(X509 *x)
{
	return (X509_NAME_hash(x->cert_info->subject));
}

#ifndef OPENSSL_NO_MD5
unsigned long
X509_subject_name_hash_old(X509 *x)
{
	return (X509_NAME_hash_old(x->cert_info->subject));
}
#endif

#ifndef OPENSSL_NO_SHA
/* Compare two certificates: they must be identical for
 * this to work. NB: Although "cmp" operations are generally
 * prototyped to take "const" arguments (eg. for use in
 * STACKs), the way X509 handling is - these operations may
 * involve ensuring the hashes are up-to-date and ensuring
 * certain cert information is cached. So this is the point
 * where the "depth-first" constification tree has to halt
 * with an evil cast.
 */
int
X509_cmp(const X509 *a, const X509 *b)
{
	/* ensure hash is valid */
	X509_check_purpose((X509 *)a, -1, 0);
	X509_check_purpose((X509 *)b, -1, 0);

	return memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH);
}
#endif

int
X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b)
{
	int ret;

	/* Ensure canonical encoding is present and up to date */
	if (!a->canon_enc || a->modified) {
		ret = i2d_X509_NAME((X509_NAME *)a, NULL);
		if (ret < 0)
			return -2;
	}
	if (!b->canon_enc || b->modified) {
		ret = i2d_X509_NAME((X509_NAME *)b, NULL);
		if (ret < 0)
			return -2;
	}
	ret = a->canon_enclen - b->canon_enclen;
	if (ret)
		return ret;
	return memcmp(a->canon_enc, b->canon_enc, a->canon_enclen);
}

unsigned long
X509_NAME_hash(X509_NAME *x)
{
	unsigned long ret = 0;
	unsigned char md[SHA_DIGEST_LENGTH];

	/* Make sure X509_NAME structure contains valid cached encoding */
	i2d_X509_NAME(x, NULL);
	if (!EVP_Digest(x->canon_enc, x->canon_enclen, md, NULL, EVP_sha1(),
	    NULL))
		return 0;

	ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
	    ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)) &
	    0xffffffffL;
	return (ret);
}


#ifndef OPENSSL_NO_MD5
/* I now DER encode the name and hash it.  Since I cache the DER encoding,
 * this is reasonably efficient. */

unsigned long
X509_NAME_hash_old(X509_NAME *x)
{
	EVP_MD_CTX md_ctx;
	unsigned long ret = 0;
	unsigned char md[16];

	/* Make sure X509_NAME structure contains valid cached encoding */
	i2d_X509_NAME(x, NULL);
	EVP_MD_CTX_init(&md_ctx);
	if (EVP_DigestInit_ex(&md_ctx, EVP_md5(), NULL) &&
	    EVP_DigestUpdate(&md_ctx, x->bytes->data, x->bytes->length) &&
	    EVP_DigestFinal_ex(&md_ctx, md, NULL))
		ret = (((unsigned long)md[0]) |
		    ((unsigned long)md[1] << 8L) |
		    ((unsigned long)md[2] << 16L) |
		    ((unsigned long)md[3] << 24L)) &
		    0xffffffffL;
	EVP_MD_CTX_cleanup(&md_ctx);

	return (ret);
}
#endif

/* Search a stack of X509 for a match */
X509 *
X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, X509_NAME *name,
    ASN1_INTEGER *serial)
{
	int i;
	X509_CINF cinf;
	X509 x, *x509 = NULL;

	if (!sk)
		return NULL;

	x.cert_info = &cinf;
	cinf.serialNumber = serial;
	cinf.issuer = name;

	for (i = 0; i < sk_X509_num(sk); i++) {
		x509 = sk_X509_value(sk, i);
		if (X509_issuer_and_serial_cmp(x509, &x) == 0)
			return (x509);
	}
	return (NULL);
}

X509 *
X509_find_by_subject(STACK_OF(X509) *sk, X509_NAME *name)
{
	X509 *x509;
	int i;

	for (i = 0; i < sk_X509_num(sk); i++) {
		x509 = sk_X509_value(sk, i);
		if (X509_NAME_cmp(X509_get_subject_name(x509), name) == 0)
			return (x509);
	}
	return (NULL);
}

EVP_PKEY *
X509_get_pubkey(X509 *x)
{
	if ((x == NULL) || (x->cert_info == NULL))
		return (NULL);
	return (X509_PUBKEY_get(x->cert_info->key));
}

ASN1_BIT_STRING *
X509_get0_pubkey_bitstr(const X509 *x)
{
	if (!x)
		return NULL;
	return x->cert_info->key->public_key;
}

int
X509_check_private_key(X509 *x, EVP_PKEY *k)
{
	EVP_PKEY *xk;
	int ret;

	xk = X509_get_pubkey(x);

	if (xk)
		ret = EVP_PKEY_cmp(xk, k);
	else
		ret = -2;

	switch (ret) {
	case 1:
		break;
	case 0:
		X509err(X509_F_X509_CHECK_PRIVATE_KEY,
		    X509_R_KEY_VALUES_MISMATCH);
		break;
	case -1:
		X509err(X509_F_X509_CHECK_PRIVATE_KEY,
		    X509_R_KEY_TYPE_MISMATCH);
		break;
	case -2:
		X509err(X509_F_X509_CHECK_PRIVATE_KEY,
		    X509_R_UNKNOWN_KEY_TYPE);
	}
	EVP_PKEY_free(xk);
	if (ret > 0)
		return 1;
	return 0;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: x509_cmp.c,v 1.26 2015/07/29 14:58:34 jsing Exp $ */
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 <ctype.h>
60			#include <stdio.h>
61			#include <string.h>
62
63			#include <openssl/opensslconf.h>
64
65			#include <openssl/asn1.h>
66			#include <openssl/err.h>
67			#include <openssl/objects.h>
68			#include <openssl/x509.h>
69			#include <openssl/x509v3.h>
70
71			int
72			X509_issuer_and_serial_cmp(const X509 a, const X509 b)
73		2	{
74			int i;
75			X509_CINF ai, bi;
76
77		2	ai = a->cert_info;
78		2	bi = b->cert_info;
79		2	i = ASN1_STRING_cmp(ai->serialNumber, bi->serialNumber);
80	✗✓	2	if (i)
81			return (i);
82		2	return (X509_NAME_cmp(ai->issuer, bi->issuer));
83			}
84
85			#ifndef OPENSSL_NO_MD5
86			unsigned long
87			X509_issuer_and_serial_hash(X509 *a)
88			{
89			unsigned long ret = 0;
90			EVP_MD_CTX ctx;
91			unsigned char md[16];
92			char *f;
93
94			EVP_MD_CTX_init(&ctx);
95			f = X509_NAME_oneline(a->cert_info->issuer, NULL, 0);
96			if (f == NULL)
97			goto err;
98			if (!EVP_DigestInit_ex(&ctx, EVP_md5(), NULL))
99			goto err;
100			if (!EVP_DigestUpdate(&ctx, (unsigned char *)f, strlen(f)))
101			goto err;
102			free(f);
103			f = NULL;
104			if (!EVP_DigestUpdate(&ctx,
105			(unsigned char *)a->cert_info->serialNumber->data,
106			(unsigned long)a->cert_info->serialNumber->length))
107			goto err;
108			if (!EVP_DigestFinal_ex(&ctx, &(md[0]), NULL))
109			goto err;
110			ret = (((unsigned long)md[0]) \| ((unsigned long)md[1] << 8L) \|
111			((unsigned long)md[2] << 16L) \| ((unsigned long)md[3] << 24L)) &
112			0xffffffffL;
113
114			err:
115			EVP_MD_CTX_cleanup(&ctx);
116			free(f);
117			return (ret);
118			}
119			#endif
120
121			int
122			X509_issuer_name_cmp(const X509 a, const X509 b)
123			{
124			return (X509_NAME_cmp(a->cert_info->issuer, b->cert_info->issuer));
125			}
126
127			int
128			X509_subject_name_cmp(const X509 a, const X509 b)
129		33838	{
130		33838	return (X509_NAME_cmp(a->cert_info->subject, b->cert_info->subject));
131			}
132
133			int
134			X509_CRL_cmp(const X509_CRL a, const X509_CRL b)
135			{
136			return (X509_NAME_cmp(a->crl->issuer, b->crl->issuer));
137			}
138
139			#ifndef OPENSSL_NO_SHA
140			int
141			X509_CRL_match(const X509_CRL a, const X509_CRL b)
142			{
143			return memcmp(a->sha1_hash, b->sha1_hash, 20);
144			}
145			#endif
146
147			X509_NAME *
148			X509_get_issuer_name(X509 *a)
149		72	{
150		72	return (a->cert_info->issuer);
151			}
152
153			unsigned long
154			X509_issuer_name_hash(X509 *x)
155			{
156			return (X509_NAME_hash(x->cert_info->issuer));
157			}
158
159			#ifndef OPENSSL_NO_MD5
160			unsigned long
161			X509_issuer_name_hash_old(X509 *x)
162			{
163			return (X509_NAME_hash_old(x->cert_info->issuer));
164			}
165			#endif
166
167			X509_NAME *
168			X509_get_subject_name(X509 *a)
169		66	{
170		66	return (a->cert_info->subject);
171			}
172
173			ASN1_INTEGER *
174			X509_get_serialNumber(X509 *a)
175		3	{
176		3	return (a->cert_info->serialNumber);
177			}
178
179			unsigned long
180			X509_subject_name_hash(X509 *x)
181			{
182			return (X509_NAME_hash(x->cert_info->subject));
183			}
184
185			#ifndef OPENSSL_NO_MD5
186			unsigned long
187			X509_subject_name_hash_old(X509 *x)
188			{
189			return (X509_NAME_hash_old(x->cert_info->subject));
190			}
191			#endif
192
193			#ifndef OPENSSL_NO_SHA
194			/* Compare two certificates: they must be identical for
195			* this to work. NB: Although "cmp" operations are generally
196			* prototyped to take "const" arguments (eg. for use in
197			* STACKs), the way X509 handling is - these operations may
198			* involve ensuring the hashes are up-to-date and ensuring
199			* certain cert information is cached. So this is the point
200			* where the "depth-first" constification tree has to halt
201			* with an evil cast.
202			*/
203			int
204			X509_cmp(const X509 a, const X509 b)
205			{
206			/* ensure hash is valid */
207			X509_check_purpose((X509 *)a, -1, 0);
208			X509_check_purpose((X509 *)b, -1, 0);
209
210			return memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH);
211			}
212			#endif
213
214			int
215			X509_NAME_cmp(const X509_NAME a, const X509_NAME b)
216		33904	{
217			int ret;
218
219			/* Ensure canonical encoding is present and up to date */
220	✓✗✗✓	33904	if (!a->canon_enc \|\| a->modified) {
221			ret = i2d_X509_NAME((X509_NAME *)a, NULL);
222			if (ret < 0)
223			return -2;
224			}
225	✓✗✗✓	33904	if (!b->canon_enc \|\| b->modified) {
226			ret = i2d_X509_NAME((X509_NAME *)b, NULL);
227			if (ret < 0)
228			return -2;
229			}
230		33904	ret = a->canon_enclen - b->canon_enclen;
231	✓✓	33904	if (ret)
232		31434	return ret;
233		2470	return memcmp(a->canon_enc, b->canon_enc, a->canon_enclen);
234			}
235
236			unsigned long
237			X509_NAME_hash(X509_NAME *x)
238			{
239			unsigned long ret = 0;
240			unsigned char md[SHA_DIGEST_LENGTH];
241
242			/* Make sure X509_NAME structure contains valid cached encoding */
243			i2d_X509_NAME(x, NULL);
244			if (!EVP_Digest(x->canon_enc, x->canon_enclen, md, NULL, EVP_sha1(),
245			NULL))
246			return 0;
247
248			ret = (((unsigned long)md[0]) \| ((unsigned long)md[1] << 8L) \|
249			((unsigned long)md[2] << 16L) \| ((unsigned long)md[3] << 24L)) &
250			0xffffffffL;
251			return (ret);
252			}
253
254
255			#ifndef OPENSSL_NO_MD5
256			/* I now DER encode the name and hash it. Since I cache the DER encoding,
257			* this is reasonably efficient. */
258
259			unsigned long
260			X509_NAME_hash_old(X509_NAME *x)
261			{
262			EVP_MD_CTX md_ctx;
263			unsigned long ret = 0;
264			unsigned char md[16];
265
266			/* Make sure X509_NAME structure contains valid cached encoding */
267			i2d_X509_NAME(x, NULL);
268			EVP_MD_CTX_init(&md_ctx);
269			if (EVP_DigestInit_ex(&md_ctx, EVP_md5(), NULL) &&
270			EVP_DigestUpdate(&md_ctx, x->bytes->data, x->bytes->length) &&
271			EVP_DigestFinal_ex(&md_ctx, md, NULL))
272			ret = (((unsigned long)md[0]) \|
273			((unsigned long)md[1] << 8L) \|
274			((unsigned long)md[2] << 16L) \|
275			((unsigned long)md[3] << 24L)) &
276			0xffffffffL;
277			EVP_MD_CTX_cleanup(&md_ctx);
278
279			return (ret);
280			}
281			#endif
282
283			/* Search a stack of X509 for a match */
284			X509 *
285			X509_find_by_issuer_and_serial(STACK_OF(X509) sk, X509_NAME name,
286			ASN1_INTEGER *serial)
287		2	{
288			int i;
289			X509_CINF cinf;
290		2	X509 x, *x509 = NULL;
291
292	✗✓	2	if (!sk)
293			return NULL;
294
295		2	x.cert_info = &cinf;
296		2	cinf.serialNumber = serial;
297		2	cinf.issuer = name;
298
299	✓✗	2	for (i = 0; i < sk_X509_num(sk); i++) {
300		2	x509 = sk_X509_value(sk, i);
301	✓✗	2	if (X509_issuer_and_serial_cmp(x509, &x) == 0)
302		2	return (x509);
303			}
304			return (NULL);
305			}
306
307			X509 *
308			X509_find_by_subject(STACK_OF(X509) sk, X509_NAME name)
309			{
310			X509 *x509;
311			int i;
312
313			for (i = 0; i < sk_X509_num(sk); i++) {
314			x509 = sk_X509_value(sk, i);
315			if (X509_NAME_cmp(X509_get_subject_name(x509), name) == 0)
316			return (x509);
317			}
318			return (NULL);
319			}
320
321			EVP_PKEY *
322			X509_get_pubkey(X509 *x)
323		25	{
324	✓✗✗✓	25	if ((x == NULL) \|\| (x->cert_info == NULL))
325			return (NULL);
326		25	return (X509_PUBKEY_get(x->cert_info->key));
327			}
328
329			ASN1_BIT_STRING *
330			X509_get0_pubkey_bitstr(const X509 *x)
331		7	{
332	✗✓	7	if (!x)
333			return NULL;
334		7	return x->cert_info->key->public_key;
335			}
336
337			int
338			X509_check_private_key(X509 x, EVP_PKEY k)
339		3	{
340			EVP_PKEY *xk;
341			int ret;
342
343		3	xk = X509_get_pubkey(x);
344
345	✓✗	3	if (xk)
346		3	ret = EVP_PKEY_cmp(xk, k);
347			else
348			ret = -2;
349
350	✗✗✗✓	3	switch (ret) {
351			case 1:
352			break;
353			case 0:
354			X509err(X509_F_X509_CHECK_PRIVATE_KEY,
355			X509_R_KEY_VALUES_MISMATCH);
356			break;
357			case -1:
358			X509err(X509_F_X509_CHECK_PRIVATE_KEY,
359			X509_R_KEY_TYPE_MISMATCH);
360			break;
361			case -2:
362			X509err(X509_F_X509_CHECK_PRIVATE_KEY,
363			X509_R_UNKNOWN_KEY_TYPE);
364			}
365		3	EVP_PKEY_free(xk);
366	✓✗	3	if (ret > 0)
367		3	return 1;
368			return 0;
369			}