Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/ec/ec_ameth.c	Lines:	111	267	41.6 %
Date:	2017-11-13	Branches:	53	162	32.7 %


/* $OpenBSD: ec_ameth.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 2006.
 */
/* ====================================================================
 * Copyright (c) 2006 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/opensslconf.h>

#include <openssl/bn.h>
#include <openssl/ec.h>
#include <openssl/err.h>
#include <openssl/x509.h>


#include "asn1_locl.h"

static int
eckey_param2type(int *pptype, void **ppval, EC_KEY * ec_key)
{
	const EC_GROUP *group;
	int nid;
	if (ec_key == NULL || (group = EC_KEY_get0_group(ec_key)) == NULL) {
		ECerror(EC_R_MISSING_PARAMETERS);
		return 0;
	}
	if (EC_GROUP_get_asn1_flag(group) &&
	    (nid = EC_GROUP_get_curve_name(group))) {
		/* we have a 'named curve' => just set the OID */
		*ppval = OBJ_nid2obj(nid);
		*pptype = V_ASN1_OBJECT;
	} else {
		/* explicit parameters */
		ASN1_STRING *pstr = NULL;
		pstr = ASN1_STRING_new();
		if (!pstr)
			return 0;
		pstr->length = i2d_ECParameters(ec_key, &pstr->data);
		if (pstr->length <= 0) {
			ASN1_STRING_free(pstr);
			ECerror(ERR_R_EC_LIB);
			return 0;
		}
		*ppval = pstr;
		*pptype = V_ASN1_SEQUENCE;
	}
	return 1;
}

static int
eckey_pub_encode(X509_PUBKEY * pk, const EVP_PKEY * pkey)
{
	EC_KEY *ec_key = pkey->pkey.ec;
	void *pval = NULL;
	int ptype;
	unsigned char *penc = NULL, *p;
	int penclen;

	if (!eckey_param2type(&ptype, &pval, ec_key)) {
		ECerror(ERR_R_EC_LIB);
		return 0;
	}
	penclen = i2o_ECPublicKey(ec_key, NULL);
	if (penclen <= 0)
		goto err;
	penc = malloc(penclen);
	if (!penc)
		goto err;
	p = penc;
	penclen = i2o_ECPublicKey(ec_key, &p);
	if (penclen <= 0)
		goto err;
	if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_EC),
		ptype, pval, penc, penclen))
		return 1;
err:
	if (ptype == V_ASN1_OBJECT)
		ASN1_OBJECT_free(pval);
	else
		ASN1_STRING_free(pval);
	free(penc);
	return 0;
}

static EC_KEY *
eckey_type2param(int ptype, void *pval)
{
	EC_KEY *eckey = NULL;

	if (ptype == V_ASN1_SEQUENCE) {
		ASN1_STRING *pstr = pval;
		const unsigned char *pm = NULL;
		int pmlen;

		pm = pstr->data;
		pmlen = pstr->length;
		if (!(eckey = d2i_ECParameters(NULL, &pm, pmlen))) {
			ECerror(EC_R_DECODE_ERROR);
			goto ecerr;
		}
	} else if (ptype == V_ASN1_OBJECT) {
		ASN1_OBJECT *poid = pval;
		EC_GROUP *group;

		/*
		 * type == V_ASN1_OBJECT => the parameters are given by an
		 * asn1 OID
		 */
		if ((eckey = EC_KEY_new()) == NULL) {
			ECerror(ERR_R_MALLOC_FAILURE);
			goto ecerr;
		}
		group = EC_GROUP_new_by_curve_name(OBJ_obj2nid(poid));
		if (group == NULL)
			goto ecerr;
		EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);
		if (EC_KEY_set_group(eckey, group) == 0)
			goto ecerr;
		EC_GROUP_free(group);
	} else {
		ECerror(EC_R_DECODE_ERROR);
		goto ecerr;
	}

	return eckey;

ecerr:
	if (eckey)
		EC_KEY_free(eckey);
	return NULL;
}

static int
eckey_pub_decode(EVP_PKEY * pkey, X509_PUBKEY * pubkey)
{
	const unsigned char *p = NULL;
	void *pval;
	int ptype, pklen;
	EC_KEY *eckey = NULL;
	X509_ALGOR *palg;

	if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
		return 0;
	X509_ALGOR_get0(NULL, &ptype, &pval, palg);

	eckey = eckey_type2param(ptype, pval);

	if (!eckey) {
		ECerror(ERR_R_EC_LIB);
		return 0;
	}
	/* We have parameters now set public key */
	if (!o2i_ECPublicKey(&eckey, &p, pklen)) {
		ECerror(EC_R_DECODE_ERROR);
		goto ecerr;
	}
	EVP_PKEY_assign_EC_KEY(pkey, eckey);
	return 1;

ecerr:
	if (eckey)
		EC_KEY_free(eckey);
	return 0;
}

static int
eckey_pub_cmp(const EVP_PKEY * a, const EVP_PKEY * b)
{
	int r;
	const EC_GROUP *group = EC_KEY_get0_group(b->pkey.ec);
	const EC_POINT *pa = EC_KEY_get0_public_key(a->pkey.ec), *pb = EC_KEY_get0_public_key(b->pkey.ec);

	r = EC_POINT_cmp(group, pa, pb, NULL);
	if (r == 0)
		return 1;
	if (r == 1)
		return 0;
	return -2;
}

static int
eckey_priv_decode(EVP_PKEY * pkey, PKCS8_PRIV_KEY_INFO * p8)
{
	const unsigned char *p = NULL;
	void *pval;
	int ptype, pklen;
	EC_KEY *eckey = NULL;
	X509_ALGOR *palg;

	if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
		return 0;
	X509_ALGOR_get0(NULL, &ptype, &pval, palg);

	eckey = eckey_type2param(ptype, pval);

	if (!eckey)
		goto ecliberr;

	/* We have parameters now set private key */
	if (!d2i_ECPrivateKey(&eckey, &p, pklen)) {
		ECerror(EC_R_DECODE_ERROR);
		goto ecerr;
	}
	/* calculate public key (if necessary) */
	if (EC_KEY_get0_public_key(eckey) == NULL) {
		const BIGNUM *priv_key;
		const EC_GROUP *group;
		EC_POINT *pub_key;
		/*
		 * the public key was not included in the SEC1 private key =>
		 * calculate the public key
		 */
		group = EC_KEY_get0_group(eckey);
		pub_key = EC_POINT_new(group);
		if (pub_key == NULL) {
			ECerror(ERR_R_EC_LIB);
			goto ecliberr;
		}
		if (!EC_POINT_copy(pub_key, EC_GROUP_get0_generator(group))) {
			EC_POINT_free(pub_key);
			ECerror(ERR_R_EC_LIB);
			goto ecliberr;
		}
		priv_key = EC_KEY_get0_private_key(eckey);
		if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, NULL)) {
			EC_POINT_free(pub_key);
			ECerror(ERR_R_EC_LIB);
			goto ecliberr;
		}
		if (EC_KEY_set_public_key(eckey, pub_key) == 0) {
			EC_POINT_free(pub_key);
			ECerror(ERR_R_EC_LIB);
			goto ecliberr;
		}
		EC_POINT_free(pub_key);
	}
	EVP_PKEY_assign_EC_KEY(pkey, eckey);
	return 1;

ecliberr:
	ECerror(ERR_R_EC_LIB);
ecerr:
	if (eckey)
		EC_KEY_free(eckey);
	return 0;
}

static int
eckey_priv_encode(PKCS8_PRIV_KEY_INFO * p8, const EVP_PKEY * pkey)
{
	EC_KEY *ec_key;
	unsigned char *ep, *p;
	int eplen, ptype;
	void *pval;
	unsigned int tmp_flags, old_flags;

	ec_key = pkey->pkey.ec;

	if (!eckey_param2type(&ptype, &pval, ec_key)) {
		ECerror(EC_R_DECODE_ERROR);
		return 0;
	}
	/* set the private key */

	/*
	 * do not include the parameters in the SEC1 private key see PKCS#11
	 * 12.11
	 */
	old_flags = EC_KEY_get_enc_flags(ec_key);
	tmp_flags = old_flags | EC_PKEY_NO_PARAMETERS;
	EC_KEY_set_enc_flags(ec_key, tmp_flags);
	eplen = i2d_ECPrivateKey(ec_key, NULL);
	if (!eplen) {
		EC_KEY_set_enc_flags(ec_key, old_flags);
		ECerror(ERR_R_EC_LIB);
		return 0;
	}
	ep = malloc(eplen);
	if (!ep) {
		EC_KEY_set_enc_flags(ec_key, old_flags);
		ECerror(ERR_R_MALLOC_FAILURE);
		return 0;
	}
	p = ep;
	if (!i2d_ECPrivateKey(ec_key, &p)) {
		EC_KEY_set_enc_flags(ec_key, old_flags);
		free(ep);
		ECerror(ERR_R_EC_LIB);
		return 0;
	}
	/* restore old encoding flags */
	EC_KEY_set_enc_flags(ec_key, old_flags);

	if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_X9_62_id_ecPublicKey), 0,
		ptype, pval, ep, eplen))
		return 0;

	return 1;
}

static int
int_ec_size(const EVP_PKEY * pkey)
{
	return ECDSA_size(pkey->pkey.ec);
}

static int
ec_bits(const EVP_PKEY * pkey)
{
	BIGNUM *order = BN_new();
	const EC_GROUP *group;
	int ret;

	if (!order) {
		ERR_clear_error();
		return 0;
	}
	group = EC_KEY_get0_group(pkey->pkey.ec);
	if (!EC_GROUP_get_order(group, order, NULL)) {
		BN_free(order);
		ERR_clear_error();
		return 0;
	}
	ret = BN_num_bits(order);
	BN_free(order);
	return ret;
}

static int
ec_missing_parameters(const EVP_PKEY * pkey)
{
	if (EC_KEY_get0_group(pkey->pkey.ec) == NULL)
		return 1;
	return 0;
}

static int
ec_copy_parameters(EVP_PKEY * to, const EVP_PKEY * from)
{
	return EC_KEY_set_group(to->pkey.ec, EC_KEY_get0_group(from->pkey.ec));
}

static int
ec_cmp_parameters(const EVP_PKEY * a, const EVP_PKEY * b)
{
	const EC_GROUP *group_a = EC_KEY_get0_group(a->pkey.ec), *group_b = EC_KEY_get0_group(b->pkey.ec);
	if (EC_GROUP_cmp(group_a, group_b, NULL))
		return 0;
	else
		return 1;
}

static void
int_ec_free(EVP_PKEY * pkey)
{
	EC_KEY_free(pkey->pkey.ec);
}

static int
do_EC_KEY_print(BIO * bp, const EC_KEY * x, int off, int ktype)
{
	unsigned char *buffer = NULL;
	const char *ecstr;
	size_t buf_len = 0, i;
	int ret = 0, reason = ERR_R_BIO_LIB;
	BIGNUM *pub_key = NULL, *order = NULL;
	BN_CTX *ctx = NULL;
	const EC_GROUP *group;
	const EC_POINT *public_key;
	const BIGNUM *priv_key;

	if (x == NULL || (group = EC_KEY_get0_group(x)) == NULL) {
		reason = ERR_R_PASSED_NULL_PARAMETER;
		goto err;
	}
	ctx = BN_CTX_new();
	if (ctx == NULL) {
		reason = ERR_R_MALLOC_FAILURE;
		goto err;
	}
	if (ktype > 0) {
		public_key = EC_KEY_get0_public_key(x);
		if ((pub_key = EC_POINT_point2bn(group, public_key,
			    EC_KEY_get_conv_form(x), NULL, ctx)) == NULL) {
			reason = ERR_R_EC_LIB;
			goto err;
		}
		if (pub_key)
			buf_len = (size_t) BN_num_bytes(pub_key);
	}
	if (ktype == 2) {
		priv_key = EC_KEY_get0_private_key(x);
		if (priv_key && (i = (size_t) BN_num_bytes(priv_key)) > buf_len)
			buf_len = i;
	} else
		priv_key = NULL;

	if (ktype > 0) {
		buf_len += 10;
		if ((buffer = malloc(buf_len)) == NULL) {
			reason = ERR_R_MALLOC_FAILURE;
			goto err;
		}
	}
	if (ktype == 2)
		ecstr = "Private-Key";
	else if (ktype == 1)
		ecstr = "Public-Key";
	else
		ecstr = "ECDSA-Parameters";

	if (!BIO_indent(bp, off, 128))
		goto err;
	if ((order = BN_new()) == NULL)
		goto err;
	if (!EC_GROUP_get_order(group, order, NULL))
		goto err;
	if (BIO_printf(bp, "%s: (%d bit)\n", ecstr,
		BN_num_bits(order)) <= 0)
		goto err;

	if ((priv_key != NULL) && !ASN1_bn_print(bp, "priv:", priv_key,
		buffer, off))
		goto err;
	if ((pub_key != NULL) && !ASN1_bn_print(bp, "pub: ", pub_key,
		buffer, off))
		goto err;
	if (!ECPKParameters_print(bp, group, off))
		goto err;
	ret = 1;
err:
	if (!ret)
		ECerror(reason);
	BN_free(pub_key);
	BN_free(order);
	BN_CTX_free(ctx);
	free(buffer);
	return (ret);
}

static int
eckey_param_decode(EVP_PKEY * pkey,
    const unsigned char **pder, int derlen)
{
	EC_KEY *eckey;
	if (!(eckey = d2i_ECParameters(NULL, pder, derlen))) {
		ECerror(ERR_R_EC_LIB);
		return 0;
	}
	EVP_PKEY_assign_EC_KEY(pkey, eckey);
	return 1;
}

static int
eckey_param_encode(const EVP_PKEY * pkey, unsigned char **pder)
{
	return i2d_ECParameters(pkey->pkey.ec, pder);
}

static int
eckey_param_print(BIO * bp, const EVP_PKEY * pkey, int indent,
    ASN1_PCTX * ctx)
{
	return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 0);
}

static int
eckey_pub_print(BIO * bp, const EVP_PKEY * pkey, int indent,
    ASN1_PCTX * ctx)
{
	return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 1);
}


static int
eckey_priv_print(BIO * bp, const EVP_PKEY * pkey, int indent,
    ASN1_PCTX * ctx)
{
	return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 2);
}

static int
old_ec_priv_decode(EVP_PKEY * pkey,
    const unsigned char **pder, int derlen)
{
	EC_KEY *ec;
	if (!(ec = d2i_ECPrivateKey(NULL, pder, derlen))) {
		ECerror(EC_R_DECODE_ERROR);
		return 0;
	}
	EVP_PKEY_assign_EC_KEY(pkey, ec);
	return 1;
}

static int
old_ec_priv_encode(const EVP_PKEY * pkey, unsigned char **pder)
{
	return i2d_ECPrivateKey(pkey->pkey.ec, pder);
}

static int
ec_pkey_ctrl(EVP_PKEY * pkey, int op, long arg1, void *arg2)
{
	switch (op) {
	case ASN1_PKEY_CTRL_PKCS7_SIGN:
		if (arg1 == 0) {
			int snid, hnid;
			X509_ALGOR *alg1, *alg2;
			PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2);
			if (alg1 == NULL || alg1->algorithm == NULL)
				return -1;
			hnid = OBJ_obj2nid(alg1->algorithm);
			if (hnid == NID_undef)
				return -1;
			if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
				return -1;
			X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
		}
		return 1;

	case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
		*(int *) arg2 = NID_sha1;
		return 2;

	default:
		return -2;

	}

}

const EVP_PKEY_ASN1_METHOD eckey_asn1_meth = {
	.pkey_id = EVP_PKEY_EC,
	.pkey_base_id = EVP_PKEY_EC,

	.pem_str = "EC",
	.info = "OpenSSL EC algorithm",

	.pub_decode = eckey_pub_decode,
	.pub_encode = eckey_pub_encode,
	.pub_cmp = eckey_pub_cmp,
	.pub_print = eckey_pub_print,

	.priv_decode = eckey_priv_decode,
	.priv_encode = eckey_priv_encode,
	.priv_print = eckey_priv_print,

	.pkey_size = int_ec_size,
	.pkey_bits = ec_bits,

	.param_decode = eckey_param_decode,
	.param_encode = eckey_param_encode,
	.param_missing = ec_missing_parameters,
	.param_copy = ec_copy_parameters,
	.param_cmp = ec_cmp_parameters,
	.param_print = eckey_param_print,

	.pkey_free = int_ec_free,
	.pkey_ctrl = ec_pkey_ctrl,
	.old_priv_decode = old_ec_priv_decode,
	.old_priv_encode = old_ec_priv_encode
};


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: ec_ameth.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 2006.
4			*/
5			/* ====================================================================
6			* Copyright (c) 2006 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/opensslconf.h>
62
63			#include <openssl/bn.h>
64			#include <openssl/ec.h>
65			#include <openssl/err.h>
66			#include <openssl/x509.h>
67
68
69			#include "asn1_locl.h"
70
71			static int
72			eckey_param2type(int pptype, void ppval, EC_KEY ec_key)
73			{
74			const EC_GROUP *group;
75			int nid;
76	✓✗✗✓	12	if (ec_key == NULL \|\| (group = EC_KEY_get0_group(ec_key)) == NULL) {
77			ECerror(EC_R_MISSING_PARAMETERS);
78			return 0;
79			}
80	✗✓✗✗	4	if (EC_GROUP_get_asn1_flag(group) &&
81			(nid = EC_GROUP_get_curve_name(group))) {
82			/* we have a 'named curve' => just set the OID */
83			*ppval = OBJ_nid2obj(nid);
84			*pptype = V_ASN1_OBJECT;
85			} else {
86			/* explicit parameters */
87			ASN1_STRING *pstr = NULL;
88		4	pstr = ASN1_STRING_new();
89	✗✓	4	if (!pstr)
90			return 0;
91		4	pstr->length = i2d_ECParameters(ec_key, &pstr->data);
92	✗✓	4	if (pstr->length <= 0) {
93			ASN1_STRING_free(pstr);
94			ECerror(ERR_R_EC_LIB);
95			return 0;
96			}
97		4	*ppval = pstr;
98		4	*pptype = V_ASN1_SEQUENCE;
99	✓✗	4	}
100		4	return 1;
101		4	}
102
103			static int
104			eckey_pub_encode(X509_PUBKEY * pk, const EVP_PKEY * pkey)
105			{
106			EC_KEY *ec_key = pkey->pkey.ec;
107			void *pval = NULL;
108			int ptype;
109			unsigned char penc = NULL, p;
110			int penclen;
111
112			if (!eckey_param2type(&ptype, &pval, ec_key)) {
113			ECerror(ERR_R_EC_LIB);
114			return 0;
115			}
116			penclen = i2o_ECPublicKey(ec_key, NULL);
117			if (penclen <= 0)
118			goto err;
119			penc = malloc(penclen);
120			if (!penc)
121			goto err;
122			p = penc;
123			penclen = i2o_ECPublicKey(ec_key, &p);
124			if (penclen <= 0)
125			goto err;
126			if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_EC),
127			ptype, pval, penc, penclen))
128			return 1;
129			err:
130			if (ptype == V_ASN1_OBJECT)
131			ASN1_OBJECT_free(pval);
132			else
133			ASN1_STRING_free(pval);
134			free(penc);
135			return 0;
136			}
137
138			static EC_KEY *
139			eckey_type2param(int ptype, void *pval)
140			{
141			EC_KEY *eckey = NULL;
142
143	✓✗	4	if (ptype == V_ASN1_SEQUENCE) {
144		2	ASN1_STRING *pstr = pval;
145		2	const unsigned char *pm = NULL;
146			int pmlen;
147
148		2	pm = pstr->data;
149		2	pmlen = pstr->length;
150	✗✓	2	if (!(eckey = d2i_ECParameters(NULL, &pm, pmlen))) {
151			ECerror(EC_R_DECODE_ERROR);
152			goto ecerr;
153			}
154	✓✗✓✗ ✗	6	} else if (ptype == V_ASN1_OBJECT) {
155			ASN1_OBJECT *poid = pval;
156			EC_GROUP *group;
157
158			/*
159			* type == V_ASN1_OBJECT => the parameters are given by an
160			* asn1 OID
161			*/
162			if ((eckey = EC_KEY_new()) == NULL) {
163			ECerror(ERR_R_MALLOC_FAILURE);
164			goto ecerr;
165			}
166			group = EC_GROUP_new_by_curve_name(OBJ_obj2nid(poid));
167			if (group == NULL)
168			goto ecerr;
169			EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE);
170			if (EC_KEY_set_group(eckey, group) == 0)
171			goto ecerr;
172			EC_GROUP_free(group);
173			} else {
174			ECerror(EC_R_DECODE_ERROR);
175			goto ecerr;
176			}
177
178		2	return eckey;
179
180			ecerr:
181			if (eckey)
182			EC_KEY_free(eckey);
183			return NULL;
184		2	}
185
186			static int
187			eckey_pub_decode(EVP_PKEY * pkey, X509_PUBKEY * pubkey)
188			{
189			const unsigned char *p = NULL;
190			void *pval;
191			int ptype, pklen;
192			EC_KEY *eckey = NULL;
193			X509_ALGOR *palg;
194
195			if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
196			return 0;
197			X509_ALGOR_get0(NULL, &ptype, &pval, palg);
198
199			eckey = eckey_type2param(ptype, pval);
200
201			if (!eckey) {
202			ECerror(ERR_R_EC_LIB);
203			return 0;
204			}
205			/* We have parameters now set public key */
206			if (!o2i_ECPublicKey(&eckey, &p, pklen)) {
207			ECerror(EC_R_DECODE_ERROR);
208			goto ecerr;
209			}
210			EVP_PKEY_assign_EC_KEY(pkey, eckey);
211			return 1;
212
213			ecerr:
214			if (eckey)
215			EC_KEY_free(eckey);
216			return 0;
217			}
218
219			static int
220			eckey_pub_cmp(const EVP_PKEY * a, const EVP_PKEY * b)
221			{
222			int r;
223			const EC_GROUP *group = EC_KEY_get0_group(b->pkey.ec);
224			const EC_POINT pa = EC_KEY_get0_public_key(a->pkey.ec), pb = EC_KEY_get0_public_key(b->pkey.ec);
225
226			r = EC_POINT_cmp(group, pa, pb, NULL);
227			if (r == 0)
228			return 1;
229			if (r == 1)
230			return 0;
231			return -2;
232			}
233
234			static int
235			eckey_priv_decode(EVP_PKEY * pkey, PKCS8_PRIV_KEY_INFO * p8)
236			{
237		4	const unsigned char *p = NULL;
238		2	void *pval;
239		2	int ptype, pklen;
240		2	EC_KEY *eckey = NULL;
241		2	X509_ALGOR *palg;
242
243	✗✓	2	if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
244			return 0;
245		2	X509_ALGOR_get0(NULL, &ptype, &pval, palg);
246
247		2	eckey = eckey_type2param(ptype, pval);
248
249	✓✗	2	if (!eckey)
250			goto ecliberr;
251
252			/* We have parameters now set private key */
253	✗✓	2	if (!d2i_ECPrivateKey(&eckey, &p, pklen)) {
254			ECerror(EC_R_DECODE_ERROR);
255			goto ecerr;
256			}
257			/* calculate public key (if necessary) */
258	✗✓	2	if (EC_KEY_get0_public_key(eckey) == NULL) {
259			const BIGNUM *priv_key;
260			const EC_GROUP *group;
261			EC_POINT *pub_key;
262			/*
263			* the public key was not included in the SEC1 private key =>
264			* calculate the public key
265			*/
266			group = EC_KEY_get0_group(eckey);
267			pub_key = EC_POINT_new(group);
268			if (pub_key == NULL) {
269			ECerror(ERR_R_EC_LIB);
270			goto ecliberr;
271			}
272			if (!EC_POINT_copy(pub_key, EC_GROUP_get0_generator(group))) {
273			EC_POINT_free(pub_key);
274			ECerror(ERR_R_EC_LIB);
275			goto ecliberr;
276			}
277			priv_key = EC_KEY_get0_private_key(eckey);
278			if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, NULL)) {
279			EC_POINT_free(pub_key);
280			ECerror(ERR_R_EC_LIB);
281			goto ecliberr;
282			}
283			if (EC_KEY_set_public_key(eckey, pub_key) == 0) {
284			EC_POINT_free(pub_key);
285			ECerror(ERR_R_EC_LIB);
286			goto ecliberr;
287			}
288			EC_POINT_free(pub_key);
289			}
290		2	EVP_PKEY_assign_EC_KEY(pkey, eckey);
291		2	return 1;
292
293			ecliberr:
294			ECerror(ERR_R_EC_LIB);
295			ecerr:
296			if (eckey)
297			EC_KEY_free(eckey);
298			return 0;
299		2	}
300
301			static int
302			eckey_priv_encode(PKCS8_PRIV_KEY_INFO * p8, const EVP_PKEY * pkey)
303			{
304			EC_KEY *ec_key;
305		8	unsigned char ep, p;
306		4	int eplen, ptype;
307		4	void *pval;
308			unsigned int tmp_flags, old_flags;
309
310		4	ec_key = pkey->pkey.ec;
311
312	✗✓	4	if (!eckey_param2type(&ptype, &pval, ec_key)) {
313			ECerror(EC_R_DECODE_ERROR);
314			return 0;
315			}
316			/* set the private key */
317
318			/*
319			* do not include the parameters in the SEC1 private key see PKCS#11
320			* 12.11
321			*/
322		4	old_flags = EC_KEY_get_enc_flags(ec_key);
323		4	tmp_flags = old_flags \| EC_PKEY_NO_PARAMETERS;
324		4	EC_KEY_set_enc_flags(ec_key, tmp_flags);
325		4	eplen = i2d_ECPrivateKey(ec_key, NULL);
326	✗✓	4	if (!eplen) {
327			EC_KEY_set_enc_flags(ec_key, old_flags);
328			ECerror(ERR_R_EC_LIB);
329			return 0;
330			}
331		4	ep = malloc(eplen);
332	✗✓	4	if (!ep) {
333			EC_KEY_set_enc_flags(ec_key, old_flags);
334			ECerror(ERR_R_MALLOC_FAILURE);
335			return 0;
336			}
337		4	p = ep;
338	✗✓	8	if (!i2d_ECPrivateKey(ec_key, &p)) {
339			EC_KEY_set_enc_flags(ec_key, old_flags);
340			free(ep);
341			ECerror(ERR_R_EC_LIB);
342			return 0;
343			}
344			/* restore old encoding flags */
345		4	EC_KEY_set_enc_flags(ec_key, old_flags);
346
347	✗✓	8	if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_X9_62_id_ecPublicKey), 0,
348		4	ptype, pval, ep, eplen))
349			return 0;
350
351		4	return 1;
352		4	}
353
354			static int
355			int_ec_size(const EVP_PKEY * pkey)
356			{
357			return ECDSA_size(pkey->pkey.ec);
358			}
359
360			static int
361			ec_bits(const EVP_PKEY * pkey)
362			{
363		8	BIGNUM *order = BN_new();
364			const EC_GROUP *group;
365			int ret;
366
367	✗✓	4	if (!order) {
368			ERR_clear_error();
369			return 0;
370			}
371		4	group = EC_KEY_get0_group(pkey->pkey.ec);
372	✗✓	4	if (!EC_GROUP_get_order(group, order, NULL)) {
373			BN_free(order);
374			ERR_clear_error();
375			return 0;
376			}
377		4	ret = BN_num_bits(order);
378		4	BN_free(order);
379		4	return ret;
380		4	}
381
382			static int
383			ec_missing_parameters(const EVP_PKEY * pkey)
384			{
385	✗✓	4	if (EC_KEY_get0_group(pkey->pkey.ec) == NULL)
386			return 1;
387		2	return 0;
388		2	}
389
390			static int
391			ec_copy_parameters(EVP_PKEY * to, const EVP_PKEY * from)
392			{
393		4	return EC_KEY_set_group(to->pkey.ec, EC_KEY_get0_group(from->pkey.ec));
394			}
395
396			static int
397			ec_cmp_parameters(const EVP_PKEY * a, const EVP_PKEY * b)
398			{
399			const EC_GROUP group_a = EC_KEY_get0_group(a->pkey.ec), group_b = EC_KEY_get0_group(b->pkey.ec);
400			if (EC_GROUP_cmp(group_a, group_b, NULL))
401			return 0;
402			else
403			return 1;
404			}
405
406			static void
407			int_ec_free(EVP_PKEY * pkey)
408			{
409		748	EC_KEY_free(pkey->pkey.ec);
410		374	}
411
412			static int
413			do_EC_KEY_print(BIO * bp, const EC_KEY * x, int off, int ktype)
414			{
415			unsigned char *buffer = NULL;
416			const char *ecstr;
417			size_t buf_len = 0, i;
418			int ret = 0, reason = ERR_R_BIO_LIB;
419			BIGNUM pub_key = NULL, order = NULL;
420			BN_CTX *ctx = NULL;
421			const EC_GROUP *group;
422			const EC_POINT *public_key;
423			const BIGNUM *priv_key;
424
425	✓✗✗✓	552	if (x == NULL \|\| (group = EC_KEY_get0_group(x)) == NULL) {
426			reason = ERR_R_PASSED_NULL_PARAMETER;
427			goto err;
428			}
429		184	ctx = BN_CTX_new();
430	✗✓	184	if (ctx == NULL) {
431			reason = ERR_R_MALLOC_FAILURE;
432			goto err;
433			}
434	✓✓	184	if (ktype > 0) {
435		182	public_key = EC_KEY_get0_public_key(x);
436	✗✓	364	if ((pub_key = EC_POINT_point2bn(group, public_key,
437		364	EC_KEY_get_conv_form(x), NULL, ctx)) == NULL) {
438			reason = ERR_R_EC_LIB;
439			goto err;
440			}
441	✓✗	182	if (pub_key)
442		182	buf_len = (size_t) BN_num_bytes(pub_key);
443			}
444	✓✓	184	if (ktype == 2) {
445		182	priv_key = EC_KEY_get0_private_key(x);
446	✓✗✗✓	364	if (priv_key && (i = (size_t) BN_num_bytes(priv_key)) > buf_len)
447			buf_len = i;
448			} else
449			priv_key = NULL;
450
451	✓✓	184	if (ktype > 0) {
452		182	buf_len += 10;
453	✗✓	182	if ((buffer = malloc(buf_len)) == NULL) {
454			reason = ERR_R_MALLOC_FAILURE;
455			goto err;
456			}
457			}
458	✓✓	184	if (ktype == 2)
459		182	ecstr = "Private-Key";
460	✗✓	2	else if (ktype == 1)
461			ecstr = "Public-Key";
462			else
463			ecstr = "ECDSA-Parameters";
464
465	✓✗	184	if (!BIO_indent(bp, off, 128))
466			goto err;
467	✓✗	184	if ((order = BN_new()) == NULL)
468			goto err;
469	✓✗	184	if (!EC_GROUP_get_order(group, order, NULL))
470			goto err;
471	✓✗	368	if (BIO_printf(bp, "%s: (%d bit)\n", ecstr,
472		368	BN_num_bits(order)) <= 0)
473			goto err;
474
475	✓✓✓✗	366	if ((priv_key != NULL) && !ASN1_bn_print(bp, "priv:", priv_key,
476			buffer, off))
477			goto err;
478	✓✓✓✗	366	if ((pub_key != NULL) && !ASN1_bn_print(bp, "pub: ", pub_key,
479			buffer, off))
480			goto err;
481	✓✗	184	if (!ECPKParameters_print(bp, group, off))
482			goto err;
483		184	ret = 1;
484			err:
485	✗✓	184	if (!ret)
486			ECerror(reason);
487		184	BN_free(pub_key);
488		184	BN_free(order);
489		184	BN_CTX_free(ctx);
490		184	free(buffer);
491		184	return (ret);
492			}
493
494			static int
495			eckey_param_decode(EVP_PKEY * pkey,
496			const unsigned char **pder, int derlen)
497			{
498			EC_KEY *eckey;
499	✗✓	8	if (!(eckey = d2i_ECParameters(NULL, pder, derlen))) {
500			ECerror(ERR_R_EC_LIB);
501			return 0;
502			}
503		4	EVP_PKEY_assign_EC_KEY(pkey, eckey);
504		4	return 1;
505		4	}
506
507			static int
508			eckey_param_encode(const EVP_PKEY * pkey, unsigned char **pder)
509			{
510		16	return i2d_ECParameters(pkey->pkey.ec, pder);
511			}
512
513			static int
514			eckey_param_print(BIO * bp, const EVP_PKEY * pkey, int indent,
515			ASN1_PCTX * ctx)
516			{
517		4	return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 0);
518			}
519
520			static int
521			eckey_pub_print(BIO * bp, const EVP_PKEY * pkey, int indent,
522			ASN1_PCTX * ctx)
523			{
524			return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 1);
525			}
526
527
528			static int
529			eckey_priv_print(BIO * bp, const EVP_PKEY * pkey, int indent,
530			ASN1_PCTX * ctx)
531			{
532		364	return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 2);
533			}
534
535			static int
536			old_ec_priv_decode(EVP_PKEY * pkey,
537			const unsigned char **pder, int derlen)
538			{
539			EC_KEY *ec;
540	✗✓	360	if (!(ec = d2i_ECPrivateKey(NULL, pder, derlen))) {
541			ECerror(EC_R_DECODE_ERROR);
542			return 0;
543			}
544		180	EVP_PKEY_assign_EC_KEY(pkey, ec);
545		180	return 1;
546		180	}
547
548			static int
549			old_ec_priv_encode(const EVP_PKEY * pkey, unsigned char **pder)
550			{
551			return i2d_ECPrivateKey(pkey->pkey.ec, pder);
552			}
553
554			static int
555			ec_pkey_ctrl(EVP_PKEY * pkey, int op, long arg1, void *arg2)
556			{
557			switch (op) {
558			case ASN1_PKEY_CTRL_PKCS7_SIGN:
559			if (arg1 == 0) {
560			int snid, hnid;
561			X509_ALGOR alg1, alg2;
562			PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2);
563			if (alg1 == NULL \|\| alg1->algorithm == NULL)
564			return -1;
565			hnid = OBJ_obj2nid(alg1->algorithm);
566			if (hnid == NID_undef)
567			return -1;
568			if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
569			return -1;
570			X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
571			}
572			return 1;
573
574			case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
575			(int ) arg2 = NID_sha1;
576			return 2;
577
578			default:
579			return -2;
580
581			}
582
583			}
584
585			const EVP_PKEY_ASN1_METHOD eckey_asn1_meth = {
586			.pkey_id = EVP_PKEY_EC,
587			.pkey_base_id = EVP_PKEY_EC,
588
589			.pem_str = "EC",
590			.info = "OpenSSL EC algorithm",
591
592			.pub_decode = eckey_pub_decode,
593			.pub_encode = eckey_pub_encode,
594			.pub_cmp = eckey_pub_cmp,
595			.pub_print = eckey_pub_print,
596
597			.priv_decode = eckey_priv_decode,
598			.priv_encode = eckey_priv_encode,
599			.priv_print = eckey_priv_print,
600
601			.pkey_size = int_ec_size,
602			.pkey_bits = ec_bits,
603
604			.param_decode = eckey_param_decode,
605			.param_encode = eckey_param_encode,
606			.param_missing = ec_missing_parameters,
607			.param_copy = ec_copy_parameters,
608			.param_cmp = ec_cmp_parameters,
609			.param_print = eckey_param_print,
610
611			.pkey_free = int_ec_free,
612			.pkey_ctrl = ec_pkey_ctrl,
613			.old_priv_decode = old_ec_priv_decode,
614			.old_priv_encode = old_ec_priv_encode
615			};