Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/evp/m_sigver.c	Lines:	59	83	71.1 %
Date:	2017-11-07	Branches:	39	62	62.9 %


/* $OpenBSD: m_sigver.c,v 1.6 2017/01/29 17:49:23 beck Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project 2006.
 */
/* ====================================================================
 * Copyright (c) 2006,2007 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 <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>

#include "evp_locl.h"

static int
do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx, const EVP_MD *type,
    ENGINE *e, EVP_PKEY *pkey, int ver)
{
	if (ctx->pctx == NULL)
		ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
	if (ctx->pctx == NULL)
		return 0;

	if (type == NULL) {
		int def_nid;
		if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) > 0)
			type = EVP_get_digestbynid(def_nid);
	}

	if (type == NULL) {
		EVPerror(EVP_R_NO_DEFAULT_DIGEST);
		return 0;
	}

	if (ver) {
		if (ctx->pctx->pmeth->verifyctx_init) {
			if (ctx->pctx->pmeth->verifyctx_init(ctx->pctx,
			    ctx) <=0)
				return 0;
			ctx->pctx->operation = EVP_PKEY_OP_VERIFYCTX;
		} else if (EVP_PKEY_verify_init(ctx->pctx) <= 0)
			return 0;
	} else {
		if (ctx->pctx->pmeth->signctx_init) {
			if (ctx->pctx->pmeth->signctx_init(ctx->pctx, ctx) <= 0)
				return 0;
			ctx->pctx->operation = EVP_PKEY_OP_SIGNCTX;
		} else if (EVP_PKEY_sign_init(ctx->pctx) <= 0)
			return 0;
	}
	if (EVP_PKEY_CTX_set_signature_md(ctx->pctx, type) <= 0)
		return 0;
	if (pctx)
		*pctx = ctx->pctx;
	if (!EVP_DigestInit_ex(ctx, type, e))
		return 0;
	return 1;
}

int
EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx, const EVP_MD *type,
    ENGINE *e, EVP_PKEY *pkey)
{
	return do_sigver_init(ctx, pctx, type, e, pkey, 0);
}

int
EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx, const EVP_MD *type,
    ENGINE *e, EVP_PKEY *pkey)
{
	return do_sigver_init(ctx, pctx, type, e, pkey, 1);
}

int
EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen)
{
	int sctx, r = 0;

	if (ctx->pctx->pmeth->signctx)
		sctx = 1;
	else
		sctx = 0;
	if (sigret) {
		EVP_MD_CTX tmp_ctx;
		unsigned char md[EVP_MAX_MD_SIZE];
		unsigned int mdlen = 0;
		EVP_MD_CTX_init(&tmp_ctx);
		if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx))
			return 0;
		if (sctx)
			r = tmp_ctx.pctx->pmeth->signctx(tmp_ctx.pctx,
			    sigret, siglen, &tmp_ctx);
		else
			r = EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen);
		EVP_MD_CTX_cleanup(&tmp_ctx);
		if (sctx || !r)
			return r;
		if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, md, mdlen) <= 0)
			return 0;
	} else {
		if (sctx) {
			if (ctx->pctx->pmeth->signctx(ctx->pctx, sigret,
			    siglen, ctx) <= 0)
				return 0;
		} else {
			int s = EVP_MD_size(ctx->digest);
			if (s < 0 || EVP_PKEY_sign(ctx->pctx, sigret, siglen,
			    NULL, s) <= 0)
				return 0;
		}
	}
	return 1;
}

int
EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, unsigned char *sig, size_t siglen)
{
	EVP_MD_CTX tmp_ctx;
	unsigned char md[EVP_MAX_MD_SIZE];
	int r;
	unsigned int mdlen = 0;
	int vctx;

	if (ctx->pctx->pmeth->verifyctx)
		vctx = 1;
	else
		vctx = 0;
	EVP_MD_CTX_init(&tmp_ctx);
	if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx))
		return -1;
	if (vctx) {
		r = tmp_ctx.pctx->pmeth->verifyctx(tmp_ctx.pctx, sig,
		    siglen, &tmp_ctx);
	} else
		r = EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen);
	EVP_MD_CTX_cleanup(&tmp_ctx);
	if (vctx || !r)
		return r;
	return EVP_PKEY_verify(ctx->pctx, sig, siglen, md, mdlen);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: m_sigver.c,v 1.6 2017/01/29 17:49:23 beck Exp $ */
2			/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3			* project 2006.
4			*/
5			/* ====================================================================
6			* Copyright (c) 2006,2007 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
61			#include <openssl/err.h>
62			#include <openssl/evp.h>
63			#include <openssl/objects.h>
64			#include <openssl/x509.h>
65
66			#include "evp_locl.h"
67
68			static int
69			do_sigver_init(EVP_MD_CTX ctx, EVP_PKEY_CTX pctx, const EVP_MD type,
70			ENGINE e, EVP_PKEY pkey, int ver)
71			{
72	✓✓	207154	if (ctx->pctx == NULL)
73		38652	ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
74	✗✓	103577	if (ctx->pctx == NULL)
75			return 0;
76
77	✓✓	103577	if (type == NULL) {
78		16	int def_nid;
79	✓✗	16	if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) > 0)
80		16	type = EVP_get_digestbynid(def_nid);
81		16	}
82
83	✗✓	103577	if (type == NULL) {
84			EVPerror(EVP_R_NO_DEFAULT_DIGEST);
85			return 0;
86			}
87
88	✓✓	103577	if (ver) {
89	✗✓	1203	if (ctx->pctx->pmeth->verifyctx_init) {
90			if (ctx->pctx->pmeth->verifyctx_init(ctx->pctx,
91			ctx) <=0)
92			return 0;
93			ctx->pctx->operation = EVP_PKEY_OP_VERIFYCTX;
94	✗✓	1203	} else if (EVP_PKEY_verify_init(ctx->pctx) <= 0)
95			return 0;
96			} else {
97	✓✓	102374	if (ctx->pctx->pmeth->signctx_init) {
98	✗✓	102292	if (ctx->pctx->pmeth->signctx_init(ctx->pctx, ctx) <= 0)
99			return 0;
100		102292	ctx->pctx->operation = EVP_PKEY_OP_SIGNCTX;
101	✗✓	102374	} else if (EVP_PKEY_sign_init(ctx->pctx) <= 0)
102			return 0;
103			}
104	✗✓	103577	if (EVP_PKEY_CTX_set_signature_md(ctx->pctx, type) <= 0)
105			return 0;
106	✓✓	103577	if (pctx)
107		126	*pctx = ctx->pctx;
108	✗✓	103577	if (!EVP_DigestInit_ex(ctx, type, e))
109			return 0;
110		103577	return 1;
111		103577	}
112
113			int
114			EVP_DigestSignInit(EVP_MD_CTX ctx, EVP_PKEY_CTX pctx, const EVP_MD type,
115			ENGINE e, EVP_PKEY pkey)
116			{
117		204748	return do_sigver_init(ctx, pctx, type, e, pkey, 0);
118			}
119
120			int
121			EVP_DigestVerifyInit(EVP_MD_CTX ctx, EVP_PKEY_CTX pctx, const EVP_MD type,
122			ENGINE e, EVP_PKEY pkey)
123			{
124		2406	return do_sigver_init(ctx, pctx, type, e, pkey, 1);
125			}
126
127			int
128			EVP_DigestSignFinal(EVP_MD_CTX ctx, unsigned char sigret, size_t *siglen)
129			{
130			int sctx, r = 0;
131
132	✓✓	205244	if (ctx->pctx->pmeth->signctx)
133		102524	sctx = 1;
134			else
135			sctx = 0;
136	✓✓	102622	if (sigret) {
137		102606	EVP_MD_CTX tmp_ctx;
138		102606	unsigned char md[EVP_MAX_MD_SIZE];
139		102606	unsigned int mdlen = 0;
140		102606	EVP_MD_CTX_init(&tmp_ctx);
141	✗✓	102606	if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx))
142			return 0;
143	✓✓	102606	if (sctx)
144		102524	r = tmp_ctx.pctx->pmeth->signctx(tmp_ctx.pctx,
145			sigret, siglen, &tmp_ctx);
146			else
147		82	r = EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen);
148		102606	EVP_MD_CTX_cleanup(&tmp_ctx);
149	✓✓	102606	if (sctx \|\| !r)
150		102524	return r;
151	✗✓	82	if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, md, mdlen) <= 0)
152			return 0;
153	✓✓	102688	} else {
154	✗✓	16	if (sctx) {
155			if (ctx->pctx->pmeth->signctx(ctx->pctx, sigret,
156			siglen, ctx) <= 0)
157			return 0;
158			} else {
159		16	int s = EVP_MD_size(ctx->digest);
160	✓✗✗✓	64	if (s < 0 \|\| EVP_PKEY_sign(ctx->pctx, sigret, siglen,
161		32	NULL, s) <= 0)
162			return 0;
163	✓✗	16	}
164			}
165		98	return 1;
166		102622	}
167
168			int
169			EVP_DigestVerifyFinal(EVP_MD_CTX ctx, unsigned char sig, size_t siglen)
170			{
171		2406	EVP_MD_CTX tmp_ctx;
172		1203	unsigned char md[EVP_MAX_MD_SIZE];
173			int r;
174		1203	unsigned int mdlen = 0;
175			int vctx;
176
177	✗✓	1203	if (ctx->pctx->pmeth->verifyctx)
178			vctx = 1;
179			else
180			vctx = 0;
181		1203	EVP_MD_CTX_init(&tmp_ctx);
182	✗✓	1203	if (!EVP_MD_CTX_copy_ex(&tmp_ctx, ctx))
183			return -1;
184	✗✓	1203	if (vctx) {
185			r = tmp_ctx.pctx->pmeth->verifyctx(tmp_ctx.pctx, sig,
186			siglen, &tmp_ctx);
187			} else
188		1203	r = EVP_DigestFinal_ex(&tmp_ctx, md, &mdlen);
189		1203	EVP_MD_CTX_cleanup(&tmp_ctx);
190	✗✓	1203	if (vctx \|\| !r)
191			return r;
192		1203	return EVP_PKEY_verify(ctx->pctx, sig, siglen, md, mdlen);
193		1203	}