Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/pem/pem_pkey.c	Lines:	71	103	68.9 %
Date:	2017-11-13	Branches:	37	66	56.1 %


/* $OpenBSD: pem_pkey.c,v 1.23 2017/05/02 03:59:44 deraadt 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 <stdio.h>
#include <string.h>

#include <openssl/opensslconf.h>

#include <openssl/buffer.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/pem.h>
#include <openssl/pkcs12.h>
#include <openssl/x509.h>

#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
#endif

#include "asn1_locl.h"

int pem_check_suffix(const char *pem_str, const char *suffix);

EVP_PKEY *
PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb, void *u)
{
	char *nm = NULL;
	const unsigned char *p = NULL;
	unsigned char *data = NULL;
	long len;
	int slen;
	EVP_PKEY *ret = NULL;

	if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY,
	    bp, cb, u))
		return NULL;
	p = data;

	if (strcmp(nm, PEM_STRING_PKCS8INF) == 0) {
		PKCS8_PRIV_KEY_INFO *p8inf;
		p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
		if (!p8inf)
			goto p8err;
		ret = EVP_PKCS82PKEY(p8inf);
		if (x) {
			EVP_PKEY_free(*x);
			*x = ret;
		}
		PKCS8_PRIV_KEY_INFO_free(p8inf);
	} else if (strcmp(nm, PEM_STRING_PKCS8) == 0) {
		PKCS8_PRIV_KEY_INFO *p8inf;
		X509_SIG *p8;
		int klen;
		char psbuf[PEM_BUFSIZE];
		p8 = d2i_X509_SIG(NULL, &p, len);
		if (!p8)
			goto p8err;
		if (cb)
			klen = cb(psbuf, PEM_BUFSIZE, 0, u);
		else
			klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
		if (klen <= 0) {
			PEMerror(PEM_R_BAD_PASSWORD_READ);
			X509_SIG_free(p8);
			goto err;
		}
		p8inf = PKCS8_decrypt(p8, psbuf, klen);
		X509_SIG_free(p8);
		if (!p8inf)
			goto p8err;
		ret = EVP_PKCS82PKEY(p8inf);
		if (x) {
			EVP_PKEY_free(*x);
			*x = ret;
		}
		PKCS8_PRIV_KEY_INFO_free(p8inf);
	} else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0) {
		const EVP_PKEY_ASN1_METHOD *ameth;
		ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
		if (!ameth || !ameth->old_priv_decode)
			goto p8err;
		ret = d2i_PrivateKey(ameth->pkey_id, x, &p, len);
	}

p8err:
	if (ret == NULL)
		PEMerror(ERR_R_ASN1_LIB);
err:
	free(nm);
	freezero(data, len);
	return (ret);
}

int
PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
    unsigned char *kstr, int klen, pem_password_cb *cb, void *u)
{
	char pem_str[80];

	if (!x->ameth || x->ameth->priv_encode)
		return PEM_write_bio_PKCS8PrivateKey(bp, x, enc,
		    (char *)kstr, klen, cb, u);

	(void) snprintf(pem_str, sizeof(pem_str), "%s PRIVATE KEY",
	    x->ameth->pem_str);
	return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey,
	    pem_str, bp, x, enc, kstr, klen, cb, u);
}

EVP_PKEY *
PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x)
{
	char *nm = NULL;
	const unsigned char *p = NULL;
	unsigned char *data = NULL;
	long len;
	int slen;
	EVP_PKEY *ret = NULL;

	if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS,
	    bp, 0, NULL))
		return NULL;
	p = data;

	if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0) {
		ret = EVP_PKEY_new();
		if (!ret)
			goto err;
		if (!EVP_PKEY_set_type_str(ret, nm, slen) ||
		    !ret->ameth->param_decode ||
		    !ret->ameth->param_decode(ret, &p, len)) {
			EVP_PKEY_free(ret);
			ret = NULL;
			goto err;
		}
		if (x) {
			EVP_PKEY_free(*x);
			*x = ret;
		}
	}

err:
	if (ret == NULL)
		PEMerror(ERR_R_ASN1_LIB);
	free(nm);
	free(data);
	return (ret);
}

int
PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x)
{
	char pem_str[80];

	if (!x->ameth || !x->ameth->param_encode)
		return 0;

	(void) snprintf(pem_str, sizeof(pem_str), "%s PARAMETERS",
	    x->ameth->pem_str);
	return PEM_ASN1_write_bio((i2d_of_void *)x->ameth->param_encode,
	    pem_str, bp, x, NULL, NULL, 0, 0, NULL);
}

EVP_PKEY *
PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb, void *u)
{
	BIO *b;
	EVP_PKEY *ret;

	if ((b = BIO_new(BIO_s_file())) == NULL) {
		PEMerror(ERR_R_BUF_LIB);
		return (0);
	}
	BIO_set_fp(b, fp, BIO_NOCLOSE);
	ret = PEM_read_bio_PrivateKey(b, x, cb, u);
	BIO_free(b);
	return (ret);
}

int
PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
    unsigned char *kstr, int klen, pem_password_cb *cb, void *u)
{
	BIO *b;
	int ret;

	if ((b = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
		PEMerror(ERR_R_BUF_LIB);
		return 0;
	}
	ret = PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
	BIO_free(b);
	return ret;
}



Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: pem_pkey.c,v 1.23 2017/05/02 03:59:44 deraadt 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 <stdio.h>
60			#include <string.h>
61
62			#include <openssl/opensslconf.h>
63
64			#include <openssl/buffer.h>
65			#include <openssl/err.h>
66			#include <openssl/evp.h>
67			#include <openssl/objects.h>
68			#include <openssl/pem.h>
69			#include <openssl/pkcs12.h>
70			#include <openssl/x509.h>
71
72			#ifndef OPENSSL_NO_ENGINE
73			#include <openssl/engine.h>
74			#endif
75
76			#include "asn1_locl.h"
77
78			int pem_check_suffix(const char pem_str, const char suffix);
79
80			EVP_PKEY *
81			PEM_read_bio_PrivateKey(BIO bp, EVP_PKEY x, pem_password_cb cb, void *u)
82			{
83		1206	char *nm = NULL;
84		603	const unsigned char *p = NULL;
85		603	unsigned char *data = NULL;
86		603	long len;
87			int slen;
88			EVP_PKEY *ret = NULL;
89
90	✗✓	603	if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_EVP_PKEY,
91			bp, cb, u))
92			return NULL;
93		603	p = data;
94
95	✓✓	603	if (strcmp(nm, PEM_STRING_PKCS8INF) == 0) {
96			PKCS8_PRIV_KEY_INFO *p8inf;
97		194	p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
98	✗✓	194	if (!p8inf)
99			goto p8err;
100		194	ret = EVP_PKCS82PKEY(p8inf);
101	✗✓	194	if (x) {
102			EVP_PKEY_free(*x);
103			*x = ret;
104			}
105		194	PKCS8_PRIV_KEY_INFO_free(p8inf);
106	✗✓✓✓ ✓	603	} else if (strcmp(nm, PEM_STRING_PKCS8) == 0) {
107			PKCS8_PRIV_KEY_INFO *p8inf;
108			X509_SIG *p8;
109			int klen;
110		24	char psbuf[PEM_BUFSIZE];
111		24	p8 = d2i_X509_SIG(NULL, &p, len);
112	✗✓	24	if (!p8)
113			goto p8err;
114	✓✓	24	if (cb)
115		22	klen = cb(psbuf, PEM_BUFSIZE, 0, u);
116			else
117		2	klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
118	✗✓	24	if (klen <= 0) {
119			PEMerror(PEM_R_BAD_PASSWORD_READ);
120			X509_SIG_free(p8);
121			goto err;
122			}
123		24	p8inf = PKCS8_decrypt(p8, psbuf, klen);
124		24	X509_SIG_free(p8);
125	✗✓	24	if (!p8inf)
126			goto p8err;
127		24	ret = EVP_PKCS82PKEY(p8inf);
128	✗✓	24	if (x) {
129			EVP_PKEY_free(*x);
130			*x = ret;
131			}
132		24	PKCS8_PRIV_KEY_INFO_free(p8inf);
133	✗✓✓✓ ✓✗	481	} else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0) {
134			const EVP_PKEY_ASN1_METHOD *ameth;
135		385	ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
136	✓✗✗✓	770	if (!ameth \|\| !ameth->old_priv_decode)
137			goto p8err;
138		385	ret = d2i_PrivateKey(ameth->pkey_id, x, &p, len);
139	✗✓✓	385	}
140
141			p8err:
142	✗✓	603	if (ret == NULL)
143			PEMerror(ERR_R_ASN1_LIB);
144			err:
145		603	free(nm);
146		603	freezero(data, len);
147		603	return (ret);
148		603	}
149
150			int
151			PEM_write_bio_PrivateKey(BIO bp, EVP_PKEY x, const EVP_CIPHER *enc,
152			unsigned char kstr, int klen, pem_password_cb cb, void *u)
153			{
154		208	char pem_str[80];
155
156	✓✗✓✗	208	if (!x->ameth \|\| x->ameth->priv_encode)
157		104	return PEM_write_bio_PKCS8PrivateKey(bp, x, enc,
158			(char *)kstr, klen, cb, u);
159
160			(void) snprintf(pem_str, sizeof(pem_str), "%s PRIVATE KEY",
161			x->ameth->pem_str);
162			return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey,
163			pem_str, bp, x, enc, kstr, klen, cb, u);
164		104	}
165
166			EVP_PKEY *
167			PEM_read_bio_Parameters(BIO bp, EVP_PKEY *x)
168			{
169		28	char *nm = NULL;
170		14	const unsigned char *p = NULL;
171		14	unsigned char *data = NULL;
172		14	long len;
173			int slen;
174			EVP_PKEY *ret = NULL;
175
176	✗✓	14	if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS,
177			bp, 0, NULL))
178			return NULL;
179		14	p = data;
180
181	✓✗	14	if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0) {
182		14	ret = EVP_PKEY_new();
183	✓✗	14	if (!ret)
184			goto err;
185	✓✗✗✓	28	if (!EVP_PKEY_set_type_str(ret, nm, slen) \|\|
186	✓✗	14	!ret->ameth->param_decode \|\|
187		14	!ret->ameth->param_decode(ret, &p, len)) {
188			EVP_PKEY_free(ret);
189			ret = NULL;
190			goto err;
191			}
192	✗✓	14	if (x) {
193			EVP_PKEY_free(*x);
194			*x = ret;
195			}
196			}
197
198			err:
199	✗✓	14	if (ret == NULL)
200			PEMerror(ERR_R_ASN1_LIB);
201		14	free(nm);
202		14	free(data);
203		14	return (ret);
204		14	}
205
206			int
207			PEM_write_bio_Parameters(BIO bp, EVP_PKEY x)
208			{
209		24	char pem_str[80];
210
211	✓✗✗✓	24	if (!x->ameth \|\| !x->ameth->param_encode)
212			return 0;
213
214		24	(void) snprintf(pem_str, sizeof(pem_str), "%s PARAMETERS",
215		12	x->ameth->pem_str);
216		24	return PEM_ASN1_write_bio((i2d_of_void *)x->ameth->param_encode,
217		12	pem_str, bp, x, NULL, NULL, 0, 0, NULL);
218		12	}
219
220			EVP_PKEY *
221			PEM_read_PrivateKey(FILE fp, EVP_PKEY x, pem_password_cb cb, void *u)
222			{
223			BIO *b;
224			EVP_PKEY *ret;
225
226	✗✓	144	if ((b = BIO_new(BIO_s_file())) == NULL) {
227			PEMerror(ERR_R_BUF_LIB);
228			return (0);
229			}
230		72	BIO_set_fp(b, fp, BIO_NOCLOSE);
231		72	ret = PEM_read_bio_PrivateKey(b, x, cb, u);
232		72	BIO_free(b);
233		72	return (ret);
234		72	}
235
236			int
237			PEM_write_PrivateKey(FILE fp, EVP_PKEY x, const EVP_CIPHER *enc,
238			unsigned char kstr, int klen, pem_password_cb cb, void *u)
239			{
240			BIO *b;
241			int ret;
242
243			if ((b = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
244			PEMerror(ERR_R_BUF_LIB);
245			return 0;
246			}
247			ret = PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
248			BIO_free(b);
249			return ret;
250			}
251