Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/hmac/hm_ameth.c	Lines:	7	30	23.3 %
Date:	2017-11-07	Branches:	2	20	10.0 %


/* $OpenBSD: hm_ameth.c,v 1.10 2015/09/10 15:56:25 jsing Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project 2007.
 */
/* ====================================================================
 * Copyright (c) 2007 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 <string.h>

#include <openssl/evp.h>

#include "asn1_locl.h"

#define HMAC_TEST_PRIVATE_KEY_FORMAT

/* HMAC "ASN1" method. This is just here to indicate the
 * maximum HMAC output length and to free up an HMAC
 * key.
 */

static int
hmac_size(const EVP_PKEY *pkey)
{
	return EVP_MAX_MD_SIZE;
}

static void
hmac_key_free(EVP_PKEY *pkey)
{
	ASN1_OCTET_STRING *os = (ASN1_OCTET_STRING *)pkey->pkey.ptr;

	if (os) {
		if (os->data)
			explicit_bzero(os->data, os->length);
		ASN1_OCTET_STRING_free(os);
	}
}

static int
hmac_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
{
	switch (op) {
	case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
		*(int *)arg2 = NID_sha1;
		return 1;
	default:
		return -2;
	}
}

#ifdef HMAC_TEST_PRIVATE_KEY_FORMAT
/* A bogus private key format for test purposes. This is simply the
 * HMAC key with "HMAC PRIVATE KEY" in the headers. When enabled the
 * genpkey utility can be used to "generate" HMAC keys.
 */

static int
old_hmac_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen)
{
	ASN1_OCTET_STRING *os;

	os = ASN1_OCTET_STRING_new();
	if (os == NULL)
		goto err;
	if (ASN1_OCTET_STRING_set(os, *pder, derlen) == 0)
		goto err;
	if (EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, os) == 0)
		goto err;
	return 1;

err:
	ASN1_OCTET_STRING_free(os);
	return 0;
}

static int
old_hmac_encode(const EVP_PKEY *pkey, unsigned char **pder)
{
	int inc;
	ASN1_OCTET_STRING *os = (ASN1_OCTET_STRING *)pkey->pkey.ptr;

	if (pder) {
		if (!*pder) {
			*pder = malloc(os->length);
			if (*pder == NULL)
				return -1;
			inc = 0;
		} else
			inc = 1;

		memcpy(*pder, os->data, os->length);

		if (inc)
			*pder += os->length;
	}

	return os->length;
}

#endif

const EVP_PKEY_ASN1_METHOD hmac_asn1_meth = {
	.pkey_id = EVP_PKEY_HMAC,
	.pkey_base_id = EVP_PKEY_HMAC,

	.pem_str = "HMAC",
	.info = "OpenSSL HMAC method",

	.pkey_size = hmac_size,

	.pkey_free = hmac_key_free,
	.pkey_ctrl = hmac_pkey_ctrl,
#ifdef HMAC_TEST_PRIVATE_KEY_FORMAT
	.old_priv_decode = old_hmac_decode,
	.old_priv_encode = old_hmac_encode
#endif
};


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: hm_ameth.c,v 1.10 2015/09/10 15:56:25 jsing Exp $ */
2			/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3			* project 2007.
4			*/
5			/* ====================================================================
6			* Copyright (c) 2007 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 <string.h>
61
62			#include <openssl/evp.h>
63
64			#include "asn1_locl.h"
65
66			#define HMAC_TEST_PRIVATE_KEY_FORMAT
67
68			/* HMAC "ASN1" method. This is just here to indicate the
69			* maximum HMAC output length and to free up an HMAC
70			* key.
71			*/
72
73			static int
74			hmac_size(const EVP_PKEY *pkey)
75			{
76			return EVP_MAX_MD_SIZE;
77			}
78
79			static void
80			hmac_key_free(EVP_PKEY *pkey)
81			{
82		74586	ASN1_OCTET_STRING os = (ASN1_OCTET_STRING )pkey->pkey.ptr;
83
84	✓✗	37293	if (os) {
85	✓✗	37293	if (os->data)
86		37293	explicit_bzero(os->data, os->length);
87		37293	ASN1_OCTET_STRING_free(os);
88		37293	}
89		37293	}
90
91			static int
92			hmac_pkey_ctrl(EVP_PKEY pkey, int op, long arg1, void arg2)
93			{
94			switch (op) {
95			case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
96			(int )arg2 = NID_sha1;
97			return 1;
98			default:
99			return -2;
100			}
101			}
102
103			#ifdef HMAC_TEST_PRIVATE_KEY_FORMAT
104			/* A bogus private key format for test purposes. This is simply the
105			* HMAC key with "HMAC PRIVATE KEY" in the headers. When enabled the
106			* genpkey utility can be used to "generate" HMAC keys.
107			*/
108
109			static int
110			old_hmac_decode(EVP_PKEY pkey, const unsigned char *pder, int derlen)
111			{
112			ASN1_OCTET_STRING *os;
113
114			os = ASN1_OCTET_STRING_new();
115			if (os == NULL)
116			goto err;
117			if (ASN1_OCTET_STRING_set(os, *pder, derlen) == 0)
118			goto err;
119			if (EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, os) == 0)
120			goto err;
121			return 1;
122
123			err:
124			ASN1_OCTET_STRING_free(os);
125			return 0;
126			}
127
128			static int
129			old_hmac_encode(const EVP_PKEY pkey, unsigned char *pder)
130			{
131			int inc;
132			ASN1_OCTET_STRING os = (ASN1_OCTET_STRING )pkey->pkey.ptr;
133
134			if (pder) {
135			if (!*pder) {
136			*pder = malloc(os->length);
137			if (*pder == NULL)
138			return -1;
139			inc = 0;
140			} else
141			inc = 1;
142
143			memcpy(*pder, os->data, os->length);
144
145			if (inc)
146			*pder += os->length;
147			}
148
149			return os->length;
150			}
151
152			#endif
153
154			const EVP_PKEY_ASN1_METHOD hmac_asn1_meth = {
155			.pkey_id = EVP_PKEY_HMAC,
156			.pkey_base_id = EVP_PKEY_HMAC,
157
158			.pem_str = "HMAC",
159			.info = "OpenSSL HMAC method",
160
161			.pkey_size = hmac_size,
162
163			.pkey_free = hmac_key_free,
164			.pkey_ctrl = hmac_pkey_ctrl,
165			#ifdef HMAC_TEST_PRIVATE_KEY_FORMAT
166			.old_priv_decode = old_hmac_decode,
167			.old_priv_encode = old_hmac_encode
168			#endif
169			};