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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/cmac/cm_pmeth.c	Lines:	51	69	73.9 %
Date:	2017-11-07	Branches:	23	40	57.5 %


/* $OpenBSD: cm_pmeth.c,v 1.8 2014/07/11 08:44:48 jsing Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project 2010.
 */
/* ====================================================================
 * Copyright (c) 2010 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.
 * ====================================================================
 */

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

#include <openssl/cmac.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>

#include "evp_locl.h"

/* The context structure and "key" is simply a CMAC_CTX */

static int
pkey_cmac_init(EVP_PKEY_CTX *ctx)
{
	ctx->data = CMAC_CTX_new();
	if (!ctx->data)
		return 0;
	ctx->keygen_info_count = 0;
	return 1;
}

static int
pkey_cmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
{
	if (!pkey_cmac_init(dst))
		return 0;
	if (!CMAC_CTX_copy(dst->data, src->data))
		return 0;
	return 1;
}

static void
pkey_cmac_cleanup(EVP_PKEY_CTX *ctx)
{
	CMAC_CTX_free(ctx->data);
}

static int
pkey_cmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
	CMAC_CTX *cmkey = CMAC_CTX_new();
	CMAC_CTX *cmctx = ctx->data;

	if (!cmkey)
		return 0;
	if (!CMAC_CTX_copy(cmkey, cmctx)) {
		CMAC_CTX_free(cmkey);
		return 0;
	}
	EVP_PKEY_assign(pkey, EVP_PKEY_CMAC, cmkey);

	return 1;
}

static int
int_update(EVP_MD_CTX *ctx, const void *data, size_t count)
{
	if (!CMAC_Update(ctx->pctx->data, data, count))
		return 0;
	return 1;
}

static int
cmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
{
	EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
	mctx->update = int_update;
	return 1;
}

static int
cmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
    EVP_MD_CTX *mctx)
{
	return CMAC_Final(ctx->data, sig, siglen);
}

static int
pkey_cmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
{
	CMAC_CTX *cmctx = ctx->data;

	switch (type) {
	case EVP_PKEY_CTRL_SET_MAC_KEY:
		if (!p2 || p1 < 0)
			return 0;
		if (!CMAC_Init(cmctx, p2, p1, NULL, NULL))
			return 0;
		break;

	case EVP_PKEY_CTRL_CIPHER:
		if (!CMAC_Init(cmctx, NULL, 0, p2, ctx->engine))
			return 0;
		break;

	case EVP_PKEY_CTRL_MD:
		if (ctx->pkey && !CMAC_CTX_copy(ctx->data,
		    (CMAC_CTX *)ctx->pkey->pkey.ptr))
			return 0;
		if (!CMAC_Init(cmctx, NULL, 0, NULL, NULL))
			return 0;
		break;

	default:
		return -2;
	}
	return 1;
}

static int
pkey_cmac_ctrl_str(EVP_PKEY_CTX *ctx, const char *type, const char *value)
{
	if (!value)
		return 0;
	if (!strcmp(type, "key")) {
		void *p = (void *)value;
		return pkey_cmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
		    strlen(p), p);
	}
	if (!strcmp(type, "cipher")) {
		const EVP_CIPHER *c;

		c = EVP_get_cipherbyname(value);
		if (!c)
			return 0;
		return pkey_cmac_ctrl(ctx, EVP_PKEY_CTRL_CIPHER, -1, (void *)c);
	}
	if (!strcmp(type, "hexkey")) {
		unsigned char *key;
		int r;
		long keylen;

		key = string_to_hex(value, &keylen);
		if (!key)
			return 0;
		r = pkey_cmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key);
		free(key);
		return r;
	}

	return -2;
}

const EVP_PKEY_METHOD cmac_pkey_meth = {
	.pkey_id = EVP_PKEY_CMAC,
	.flags = EVP_PKEY_FLAG_SIGCTX_CUSTOM,

	.init = pkey_cmac_init,
	.copy = pkey_cmac_copy,
	.cleanup = pkey_cmac_cleanup,

	.keygen = pkey_cmac_keygen,

	.signctx_init = cmac_signctx_init,
	.signctx = cmac_signctx,

	.ctrl = pkey_cmac_ctrl,
	.ctrl_str = pkey_cmac_ctrl_str
};


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: cm_pmeth.c,v 1.8 2014/07/11 08:44:48 jsing Exp $ */
2			/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3			* project 2010.
4			*/
5			/* ====================================================================
6			* Copyright (c) 2010 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
54			#include <stdio.h>
55			#include <string.h>
56
57			#include <openssl/cmac.h>
58			#include <openssl/evp.h>
59			#include <openssl/x509.h>
60			#include <openssl/x509v3.h>
61
62			#include "evp_locl.h"
63
64			/* The context structure and "key" is simply a CMAC_CTX */
65
66			static int
67			pkey_cmac_init(EVP_PKEY_CTX *ctx)
68			{
69		156	ctx->data = CMAC_CTX_new();
70	✗✓	78	if (!ctx->data)
71			return 0;
72		78	ctx->keygen_info_count = 0;
73		78	return 1;
74		78	}
75
76			static int
77			pkey_cmac_copy(EVP_PKEY_CTX dst, EVP_PKEY_CTX src)
78			{
79	✗✓	52	if (!pkey_cmac_init(dst))
80			return 0;
81	✗✓	26	if (!CMAC_CTX_copy(dst->data, src->data))
82			return 0;
83		26	return 1;
84		26	}
85
86			static void
87			pkey_cmac_cleanup(EVP_PKEY_CTX *ctx)
88			{
89		156	CMAC_CTX_free(ctx->data);
90		78	}
91
92			static int
93			pkey_cmac_keygen(EVP_PKEY_CTX ctx, EVP_PKEY pkey)
94			{
95		52	CMAC_CTX *cmkey = CMAC_CTX_new();
96		26	CMAC_CTX *cmctx = ctx->data;
97
98	✗✓	26	if (!cmkey)
99			return 0;
100	✗✓	26	if (!CMAC_CTX_copy(cmkey, cmctx)) {
101			CMAC_CTX_free(cmkey);
102			return 0;
103			}
104		26	EVP_PKEY_assign(pkey, EVP_PKEY_CMAC, cmkey);
105
106		26	return 1;
107		26	}
108
109			static int
110			int_update(EVP_MD_CTX ctx, const void data, size_t count)
111			{
112	✗✓	52	if (!CMAC_Update(ctx->pctx->data, data, count))
113			return 0;
114		26	return 1;
115		26	}
116
117			static int
118			cmac_signctx_init(EVP_PKEY_CTX ctx, EVP_MD_CTX mctx)
119			{
120		52	EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
121		26	mctx->update = int_update;
122		26	return 1;
123			}
124
125			static int
126			cmac_signctx(EVP_PKEY_CTX ctx, unsigned char sig, size_t *siglen,
127			EVP_MD_CTX *mctx)
128			{
129		52	return CMAC_Final(ctx->data, sig, siglen);
130			}
131
132			static int
133			pkey_cmac_ctrl(EVP_PKEY_CTX ctx, int type, int p1, void p2)
134			{
135		260	CMAC_CTX *cmctx = ctx->data;
136
137	✓✓✓✓	130	switch (type) {
138			case EVP_PKEY_CTRL_SET_MAC_KEY:
139	✗✓	26	if (!p2 \|\| p1 < 0)
140			return 0;
141	✗✓	26	if (!CMAC_Init(cmctx, p2, p1, NULL, NULL))
142			return 0;
143			break;
144
145			case EVP_PKEY_CTRL_CIPHER:
146	✗✓	26	if (!CMAC_Init(cmctx, NULL, 0, p2, ctx->engine))
147			return 0;
148			break;
149
150			case EVP_PKEY_CTRL_MD:
151	✓✗✗✓	52	if (ctx->pkey && !CMAC_CTX_copy(ctx->data,
152		26	(CMAC_CTX *)ctx->pkey->pkey.ptr))
153			return 0;
154	✗✓	26	if (!CMAC_Init(cmctx, NULL, 0, NULL, NULL))
155			return 0;
156			break;
157
158			default:
159		52	return -2;
160			}
161		78	return 1;
162		130	}
163
164			static int
165			pkey_cmac_ctrl_str(EVP_PKEY_CTX ctx, const char type, const char *value)
166			{
167	✗✓	104	if (!value)
168			return 0;
169	✗✓	52	if (!strcmp(type, "key")) {
170			void p = (void )value;
171			return pkey_cmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
172			strlen(p), p);
173			}
174	✓✓	52	if (!strcmp(type, "cipher")) {
175			const EVP_CIPHER *c;
176
177		26	c = EVP_get_cipherbyname(value);
178	✗✓	26	if (!c)
179			return 0;
180		26	return pkey_cmac_ctrl(ctx, EVP_PKEY_CTRL_CIPHER, -1, (void *)c);
181			}
182	✓✗	26	if (!strcmp(type, "hexkey")) {
183			unsigned char *key;
184			int r;
185		26	long keylen;
186
187		26	key = string_to_hex(value, &keylen);
188	✗✓	26	if (!key)
189			return 0;
190		26	r = pkey_cmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key);
191		26	free(key);
192		26	return r;
193		26	}
194
195			return -2;
196		52	}
197
198			const EVP_PKEY_METHOD cmac_pkey_meth = {
199			.pkey_id = EVP_PKEY_CMAC,
200			.flags = EVP_PKEY_FLAG_SIGCTX_CUSTOM,
201
202			.init = pkey_cmac_init,
203			.copy = pkey_cmac_copy,
204			.cleanup = pkey_cmac_cleanup,
205
206			.keygen = pkey_cmac_keygen,
207
208			.signctx_init = cmac_signctx_init,
209			.signctx = cmac_signctx,
210
211			.ctrl = pkey_cmac_ctrl,
212			.ctrl_str = pkey_cmac_ctrl_str
213			};