Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/evp/p5_crpt.c	Lines:	39	53	73.6 %
Date:	2017-11-13	Branches:	21	40	52.5 %


/* $OpenBSD: p5_crpt.c,v 1.18 2017/01/29 17:49:23 beck Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project 1999.
 */
/* ====================================================================
 * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
 *
 * 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 above 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 acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED 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 OpenSSL PROJECT OR
 * ITS 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.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

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

#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/x509.h>

/* Doesn't do anything now: Builtin PBE algorithms in static table.
 */

void
PKCS5_PBE_add(void)
{
}

int
PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen,
    ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, int en_de)
{
	EVP_MD_CTX ctx;
	unsigned char md_tmp[EVP_MAX_MD_SIZE];
	unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
	int i;
	PBEPARAM *pbe;
	int saltlen, iter;
	unsigned char *salt;
	const unsigned char *pbuf;
	int mdsize;
	int rv = 0;

	/* Extract useful info from parameter */
	if (param == NULL || param->type != V_ASN1_SEQUENCE ||
	    param->value.sequence == NULL) {
		EVPerror(EVP_R_DECODE_ERROR);
		return 0;
	}

	mdsize = EVP_MD_size(md);
	if (mdsize < 0)
		return 0;

	pbuf = param->value.sequence->data;
	if (!(pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length))) {
		EVPerror(EVP_R_DECODE_ERROR);
		return 0;
	}

	if (!pbe->iter)
		iter = 1;
	else if ((iter = ASN1_INTEGER_get(pbe->iter)) <= 0) {
		EVPerror(EVP_R_UNSUPORTED_NUMBER_OF_ROUNDS);
		return 0;
	}
	salt = pbe->salt->data;
	saltlen = pbe->salt->length;

	if (!pass)
		passlen = 0;
	else if (passlen == -1)
		passlen = strlen(pass);

	EVP_MD_CTX_init(&ctx);

	if (!EVP_DigestInit_ex(&ctx, md, NULL))
		goto err;
	if (!EVP_DigestUpdate(&ctx, pass, passlen))
		goto err;
	if (!EVP_DigestUpdate(&ctx, salt, saltlen))
		goto err;
	if (!EVP_DigestFinal_ex(&ctx, md_tmp, NULL))
		goto err;
	for (i = 1; i < iter; i++) {
		if (!EVP_DigestInit_ex(&ctx, md, NULL))
			goto err;
		if (!EVP_DigestUpdate(&ctx, md_tmp, mdsize))
			goto err;
		if (!EVP_DigestFinal_ex (&ctx, md_tmp, NULL))
			goto err;
	}
	if ((size_t)EVP_CIPHER_key_length(cipher) > sizeof(md_tmp)) {
		EVPerror(EVP_R_BAD_KEY_LENGTH);
		goto err;
	}
	memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher));
	if ((size_t)EVP_CIPHER_iv_length(cipher) > 16) {
		EVPerror(EVP_R_IV_TOO_LARGE);
		goto err;
	}
	memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)),
	    EVP_CIPHER_iv_length(cipher));
	if (!EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de))
		goto err;
	explicit_bzero(md_tmp, EVP_MAX_MD_SIZE);
	explicit_bzero(key, EVP_MAX_KEY_LENGTH);
	explicit_bzero(iv, EVP_MAX_IV_LENGTH);
	rv = 1;
err:
	EVP_MD_CTX_cleanup(&ctx);
	PBEPARAM_free(pbe);
	return rv;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: p5_crpt.c,v 1.18 2017/01/29 17:49:23 beck Exp $ */
2			/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3			* project 1999.
4			*/
5			/* ====================================================================
6			* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			*
12			* 1. Redistributions of source code must retain the above copyright
13			* notice, this list of conditions and the following disclaimer.
14			*
15			* 2. Redistributions in binary form must reproduce the above copyright
16			* notice, this list of conditions and the following disclaimer in
17			* the documentation and/or other materials provided with the
18			* distribution.
19			*
20			* 3. All advertising materials mentioning features or use of this
21			* software must display the following acknowledgment:
22			* "This product includes software developed by the OpenSSL Project
23			* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24			*
25			* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26			* endorse or promote products derived from this software without
27			* prior written permission. For written permission, please contact
28			* licensing@OpenSSL.org.
29			*
30			* 5. Products derived from this software may not be called "OpenSSL"
31			* nor may "OpenSSL" appear in their names without prior written
32			* permission of the OpenSSL Project.
33			*
34			* 6. Redistributions of any form whatsoever must retain the following
35			* acknowledgment:
36			* "This product includes software developed by the OpenSSL Project
37			* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38			*
39			* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40			* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42			* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43			* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46			* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48			* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49			* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50			* OF THE POSSIBILITY OF SUCH DAMAGE.
51			* ====================================================================
52			*
53			* This product includes cryptographic software written by Eric Young
54			* (eay@cryptsoft.com). This product includes software written by Tim
55			* Hudson (tjh@cryptsoft.com).
56			*
57			*/
58
59			#include <stdio.h>
60			#include <stdlib.h>
61			#include <string.h>
62
63			#include <openssl/err.h>
64			#include <openssl/evp.h>
65			#include <openssl/x509.h>
66
67			/* Doesn't do anything now: Builtin PBE algorithms in static table.
68			*/
69
70			void
71			PKCS5_PBE_add(void)
72			{
73			}
74
75			int
76			PKCS5_PBE_keyivgen(EVP_CIPHER_CTX cctx, const char pass, int passlen,
77			ASN1_TYPE param, const EVP_CIPHER cipher, const EVP_MD *md, int en_de)
78			{
79		8	EVP_MD_CTX ctx;
80		4	unsigned char md_tmp[EVP_MAX_MD_SIZE];
81		4	unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
82			int i;
83			PBEPARAM *pbe;
84			int saltlen, iter;
85			unsigned char *salt;
86		4	const unsigned char *pbuf;
87			int mdsize;
88			int rv = 0;
89
90			/* Extract useful info from parameter */
91	✓✗✓✗ ✗✓	12	if (param == NULL \|\| param->type != V_ASN1_SEQUENCE \|\|
92		4	param->value.sequence == NULL) {
93			EVPerror(EVP_R_DECODE_ERROR);
94			return 0;
95			}
96
97		4	mdsize = EVP_MD_size(md);
98	✗✓	4	if (mdsize < 0)
99			return 0;
100
101		4	pbuf = param->value.sequence->data;
102	✗✓	4	if (!(pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length))) {
103			EVPerror(EVP_R_DECODE_ERROR);
104			return 0;
105			}
106
107	✗✓	4	if (!pbe->iter)
108			iter = 1;
109	✗✓	4	else if ((iter = ASN1_INTEGER_get(pbe->iter)) <= 0) {
110			EVPerror(EVP_R_UNSUPORTED_NUMBER_OF_ROUNDS);
111			return 0;
112			}
113		4	salt = pbe->salt->data;
114		4	saltlen = pbe->salt->length;
115
116	✗✓	4	if (!pass)
117			passlen = 0;
118	✗✓	4	else if (passlen == -1)
119			passlen = strlen(pass);
120
121		4	EVP_MD_CTX_init(&ctx);
122
123	✓✗	4	if (!EVP_DigestInit_ex(&ctx, md, NULL))
124			goto err;
125	✓✗	4	if (!EVP_DigestUpdate(&ctx, pass, passlen))
126			goto err;
127	✓✗	4	if (!EVP_DigestUpdate(&ctx, salt, saltlen))
128			goto err;
129	✓✗	4	if (!EVP_DigestFinal_ex(&ctx, md_tmp, NULL))
130			goto err;
131	✓✓	16384	for (i = 1; i < iter; i++) {
132	✓✗	8188	if (!EVP_DigestInit_ex(&ctx, md, NULL))
133			goto err;
134	✓✗	8188	if (!EVP_DigestUpdate(&ctx, md_tmp, mdsize))
135			goto err;
136	✓✗	8188	if (!EVP_DigestFinal_ex (&ctx, md_tmp, NULL))
137			goto err;
138			}
139	✗✓	4	if ((size_t)EVP_CIPHER_key_length(cipher) > sizeof(md_tmp)) {
140			EVPerror(EVP_R_BAD_KEY_LENGTH);
141			goto err;
142			}
143		4	memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher));
144	✗✓	4	if ((size_t)EVP_CIPHER_iv_length(cipher) > 16) {
145			EVPerror(EVP_R_IV_TOO_LARGE);
146			goto err;
147			}
148		8	memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)),
149		4	EVP_CIPHER_iv_length(cipher));
150	✓✗	4	if (!EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de))
151			goto err;
152		4	explicit_bzero(md_tmp, EVP_MAX_MD_SIZE);
153		4	explicit_bzero(key, EVP_MAX_KEY_LENGTH);
154		4	explicit_bzero(iv, EVP_MAX_IV_LENGTH);
155		4	rv = 1;
156			err:
157		4	EVP_MD_CTX_cleanup(&ctx);
158		4	PBEPARAM_free(pbe);
159		4	return rv;
160		4	}