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This commit is contained in:
zhaoxiaomeng
2018-01-04 13:38:57 +08:00
committed by Simon
parent d11f845fde
commit 53af3b51ae
2361 changed files with 387455 additions and 144458 deletions
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360
crypto/ec/ec_ameth.c
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@@ -1,14 +1,63 @@
/*
* Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
* 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).
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include "cryptlib.h"
#include <openssl/x509.h>
#include <openssl/ec.h>
#include <openssl/bn.h>
@@ -16,8 +65,7 @@
# include <openssl/cms.h>
#endif
#include <openssl/asn1t.h>
#include "internal/asn1_int.h"
#include "internal/evp_int.h"
#include "asn1_locl.h"
#include "ec_lcl.h"
#ifndef OPENSSL_NO_CMS
@@ -43,7 +91,7 @@ static int eckey_param2type(int *pptype, void **ppval, EC_KEY *ec_key)
ASN1_STRING *pstr = NULL;
pstr = ASN1_STRING_new();
if (pstr == NULL)
if (!pstr)
return 0;
pstr->length = i2d_ECParameters(ec_key, &pstr->data);
if (pstr->length <= 0) {
@@ -73,7 +121,7 @@ static int eckey_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
if (penclen <= 0)
goto err;
penc = OPENSSL_malloc(penclen);
if (penc == NULL)
if (!penc)
goto err;
p = penc;
penclen = i2o_ECPublicKey(ec_key, &p);
@@ -87,25 +135,26 @@ static int eckey_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
ASN1_OBJECT_free(pval);
else
ASN1_STRING_free(pval);
OPENSSL_free(penc);
if (penc)
OPENSSL_free(penc);
return 0;
}
static EC_KEY *eckey_type2param(int ptype, const void *pval)
static EC_KEY *eckey_type2param(int ptype, void *pval)
{
EC_KEY *eckey = NULL;
if (ptype == V_ASN1_SEQUENCE) {
const ASN1_STRING *pstr = pval;
ASN1_STRING *pstr = pval;
const unsigned char *pm = NULL;
int pmlen;
pm = pstr->data;
pmlen = pstr->length;
if ((eckey = d2i_ECParameters(NULL, &pm, pmlen)) == NULL) {
if (!(eckey = d2i_ECParameters(NULL, &pm, pmlen))) {
ECerr(EC_F_ECKEY_TYPE2PARAM, EC_R_DECODE_ERROR);
goto ecerr;
}
} else if (ptype == V_ASN1_OBJECT) {
const ASN1_OBJECT *poid = pval;
ASN1_OBJECT *poid = pval;
EC_GROUP *group;
/*
@@ -130,14 +179,15 @@ static EC_KEY *eckey_type2param(int ptype, const void *pval)
return eckey;
ecerr:
EC_KEY_free(eckey);
if (eckey)
EC_KEY_free(eckey);
return NULL;
}
static int eckey_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
{
const unsigned char *p = NULL;
const void *pval;
void *pval;
int ptype, pklen;
EC_KEY *eckey = NULL;
X509_ALGOR *palg;
@@ -163,7 +213,8 @@ static int eckey_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
return 1;
ecerr:
EC_KEY_free(eckey);
if (eckey)
EC_KEY_free(eckey);
return 0;
}
@@ -183,13 +234,13 @@ static int eckey_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
return -2;
}
static int eckey_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8)
static int eckey_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8)
{
const unsigned char *p = NULL;
const void *pval;
void *pval;
int ptype, pklen;
EC_KEY *eckey = NULL;
const X509_ALGOR *palg;
X509_ALGOR *palg;
if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
return 0;
@@ -206,13 +257,48 @@ static int eckey_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8)
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) {
ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB);
goto ecliberr;
}
if (!EC_POINT_copy(pub_key, EC_GROUP_get0_generator(group))) {
EC_POINT_free(pub_key);
ECerr(EC_F_ECKEY_PRIV_DECODE, 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);
ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB);
goto ecliberr;
}
if (EC_KEY_set_public_key(eckey, pub_key) == 0) {
EC_POINT_free(pub_key);
ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB);
goto ecliberr;
}
EC_POINT_free(pub_key);
}
EVP_PKEY_assign_EC_KEY(pkey, eckey);
return 1;
ecliberr:
ECerr(EC_F_ECKEY_PRIV_DECODE, ERR_R_EC_LIB);
ecerr:
EC_KEY_free(eckey);
if (eckey)
EC_KEY_free(eckey);
return 0;
}
@@ -243,8 +329,8 @@ static int eckey_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
ECerr(EC_F_ECKEY_PRIV_ENCODE, ERR_R_EC_LIB);
return 0;
}
ep = OPENSSL_malloc(eplen);
if (ep == NULL) {
ep = (unsigned char *)OPENSSL_malloc(eplen);
if (!ep) {
ECerr(EC_F_ECKEY_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
return 0;
}
@@ -256,8 +342,10 @@ static int eckey_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
}
if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_X9_62_id_ecPublicKey), 0,
ptype, pval, ep, eplen))
ptype, pval, ep, eplen)) {
OPENSSL_free(ep);
return 0;
}
return 1;
}
@@ -269,23 +357,23 @@ static int int_ec_size(const EVP_PKEY *pkey)
static int ec_bits(const EVP_PKEY *pkey)
{
return EC_GROUP_order_bits(EC_KEY_get0_group(pkey->pkey.ec));
}
BIGNUM *order = BN_new();
const EC_GROUP *group;
int ret;
static int ec_security_bits(const EVP_PKEY *pkey)
{
int ecbits = ec_bits(pkey);
if (ecbits >= 512)
return 256;
if (ecbits >= 384)
return 192;
if (ecbits >= 256)
return 128;
if (ecbits >= 224)
return 112;
if (ecbits >= 160)
return 80;
return ecbits / 2;
if (!order) {
ERR_clear_error();
return 0;
}
group = EC_KEY_get0_group(pkey->pkey.ec);
if (!EC_GROUP_get_order(group, order, NULL)) {
ERR_clear_error();
return 0;
}
ret = BN_num_bits(order);
BN_free(order);
return ret;
}
static int ec_missing_parameters(const EVP_PKEY *pkey)
@@ -300,11 +388,6 @@ static int ec_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
EC_GROUP *group = EC_GROUP_dup(EC_KEY_get0_group(from->pkey.ec));
if (group == NULL)
return 0;
if (to->pkey.ec == NULL) {
to->pkey.ec = EC_KEY_new();
if (to->pkey.ec == NULL)
return 0;
}
if (EC_KEY_set_group(to->pkey.ec, group) == 0)
return 0;
EC_GROUP_free(group);
@@ -328,81 +411,100 @@ static void int_ec_free(EVP_PKEY *pkey)
EC_KEY_free(pkey->pkey.ec);
}
typedef enum {
EC_KEY_PRINT_PRIVATE,
EC_KEY_PRINT_PUBLIC,
EC_KEY_PRINT_PARAM
} ec_print_t;
static int do_EC_KEY_print(BIO *bp, const EC_KEY *x, int off, ec_print_t ktype)
static int do_EC_KEY_print(BIO *bp, const EC_KEY *x, int off, int ktype)
{
unsigned char *buffer = NULL;
const char *ecstr;
unsigned char *priv = NULL, *pub = NULL;
size_t privlen = 0, publen = 0;
int ret = 0;
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) {
ECerr(EC_F_DO_EC_KEY_PRINT, ERR_R_PASSED_NULL_PARAMETER);
return 0;
reason = ERR_R_PASSED_NULL_PARAMETER;
goto err;
}
if (ktype != EC_KEY_PRINT_PARAM && EC_KEY_get0_public_key(x) != NULL) {
publen = EC_KEY_key2buf(x, EC_KEY_get_conv_form(x), &pub, NULL);
if (publen == 0)
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 (public_key != NULL) {
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;
}
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 = OPENSSL_malloc(buf_len)) == NULL) {
reason = ERR_R_MALLOC_FAILURE;
goto err;
}
}
if (ktype == EC_KEY_PRINT_PRIVATE && EC_KEY_get0_private_key(x) != NULL) {
privlen = EC_KEY_priv2buf(x, &priv);
if (privlen == 0)
goto err;
}
if (ktype == EC_KEY_PRINT_PRIVATE)
if (ktype == 2)
ecstr = "Private-Key";
else if (ktype == EC_KEY_PRINT_PUBLIC)
else if (ktype == 1)
ecstr = "Public-Key";
else
ecstr = "ECDSA-Parameters";
if (!BIO_indent(bp, off, 128))
goto err;
if (BIO_printf(bp, "%s: (%d bit)\n", ecstr,
EC_GROUP_order_bits(group)) <= 0)
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 (privlen != 0) {
if (BIO_printf(bp, "%*spriv:\n", off, "") <= 0)
goto err;
if (ASN1_buf_print(bp, priv, privlen, off + 4) == 0)
goto err;
}
if (publen != 0) {
if (BIO_printf(bp, "%*spub:\n", off, "") <= 0)
goto err;
if (ASN1_buf_print(bp, pub, publen, off + 4) == 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)
ECerr(EC_F_DO_EC_KEY_PRINT, ERR_R_EC_LIB);
OPENSSL_clear_free(priv, privlen);
OPENSSL_free(pub);
return ret;
ECerr(EC_F_DO_EC_KEY_PRINT, reason);
if (pub_key)
BN_free(pub_key);
if (order)
BN_free(order);
if (ctx)
BN_CTX_free(ctx);
if (buffer != NULL)
OPENSSL_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)) == NULL) {
if (!(eckey = d2i_ECParameters(NULL, pder, derlen))) {
ECerr(EC_F_ECKEY_PARAM_DECODE, ERR_R_EC_LIB);
return 0;
}
@@ -418,27 +520,26 @@ static int eckey_param_encode(const EVP_PKEY *pkey, unsigned char **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, EC_KEY_PRINT_PARAM);
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, EC_KEY_PRINT_PUBLIC);
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, EC_KEY_PRINT_PRIVATE);
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)) == NULL) {
if (!(ec = d2i_ECPrivateKey(NULL, pder, derlen))) {
ECerr(EC_F_OLD_EC_PRIV_DECODE, EC_R_DECODE_ERROR);
return 0;
}
@@ -502,13 +603,6 @@ static int ec_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
*(int *)arg2 = NID_sha256;
return 2;
case ASN1_PKEY_CTRL_SET1_TLS_ENCPT:
return EC_KEY_oct2key(EVP_PKEY_get0_EC_KEY(pkey), arg2, arg1, NULL);
case ASN1_PKEY_CTRL_GET1_TLS_ENCPT:
return EC_KEY_key2buf(EVP_PKEY_get0_EC_KEY(pkey),
POINT_CONVERSION_UNCOMPRESSED, arg2, NULL);
default:
return -2;
@@ -534,7 +628,6 @@ const EVP_PKEY_ASN1_METHOD eckey_asn1_meth = {
int_ec_size,
ec_bits,
ec_security_bits,
eckey_param_decode,
eckey_param_encode,
@@ -550,27 +643,14 @@ const EVP_PKEY_ASN1_METHOD eckey_asn1_meth = {
old_ec_priv_encode
};
int EC_KEY_print(BIO *bp, const EC_KEY *x, int off)
{
int private = EC_KEY_get0_private_key(x) != NULL;
return do_EC_KEY_print(bp, x, off,
private ? EC_KEY_PRINT_PRIVATE : EC_KEY_PRINT_PUBLIC);
}
int ECParameters_print(BIO *bp, const EC_KEY *x)
{
return do_EC_KEY_print(bp, x, 4, EC_KEY_PRINT_PARAM);
}
#ifndef OPENSSL_NO_CMS
static int ecdh_cms_set_peerkey(EVP_PKEY_CTX *pctx,
X509_ALGOR *alg, ASN1_BIT_STRING *pubkey)
{
const ASN1_OBJECT *aoid;
ASN1_OBJECT *aoid;
int atype;
const void *aval;
void *aval;
int rv = 0;
EVP_PKEY *pkpeer = NULL;
EC_KEY *ecpeer = NULL;
@@ -588,7 +668,7 @@ static int ecdh_cms_set_peerkey(EVP_PKEY_CTX *pctx,
goto err;
grp = EC_KEY_get0_group(pk->pkey.ec);
ecpeer = EC_KEY_new();
if (ecpeer == NULL)
if (!ecpeer)
goto err;
if (!EC_KEY_set_group(ecpeer, grp))
goto err;
@@ -599,20 +679,22 @@ static int ecdh_cms_set_peerkey(EVP_PKEY_CTX *pctx,
}
/* We have parameters now set public key */
plen = ASN1_STRING_length(pubkey);
p = ASN1_STRING_get0_data(pubkey);
p = ASN1_STRING_data(pubkey);
if (!p || !plen)
goto err;
if (!o2i_ECPublicKey(&ecpeer, &p, plen))
goto err;
pkpeer = EVP_PKEY_new();
if (pkpeer == NULL)
if (!pkpeer)
goto err;
EVP_PKEY_set1_EC_KEY(pkpeer, ecpeer);
if (EVP_PKEY_derive_set_peer(pctx, pkpeer) > 0)
rv = 1;
err:
EC_KEY_free(ecpeer);
EVP_PKEY_free(pkpeer);
if (ecpeer)
EC_KEY_free(ecpeer);
if (pkpeer)
EVP_PKEY_free(pkpeer);
return rv;
}
@@ -704,8 +786,10 @@ static int ecdh_cms_set_shared_info(EVP_PKEY_CTX *pctx, CMS_RecipientInfo *ri)
rv = 1;
err:
X509_ALGOR_free(kekalg);
OPENSSL_free(der);
if (kekalg)
X509_ALGOR_free(kekalg);
if (der)
OPENSSL_free(der);
return rv;
}
@@ -744,7 +828,7 @@ static int ecdh_cms_encrypt(CMS_RecipientInfo *ri)
EVP_CIPHER_CTX *ctx;
int keylen;
X509_ALGOR *talg, *wrap_alg = NULL;
const ASN1_OBJECT *aoid;
ASN1_OBJECT *aoid;
ASN1_BIT_STRING *pubkey;
ASN1_STRING *wrap_str;
ASN1_OCTET_STRING *ukm;
@@ -773,7 +857,7 @@ static int ecdh_cms_encrypt(CMS_RecipientInfo *ri)
if (penclen <= 0)
goto err;
penc = OPENSSL_malloc(penclen);
if (penc == NULL)
if (!penc)
goto err;
p = penc;
penclen = i2o_ECPublicKey(eckey, &p);
@@ -788,7 +872,7 @@ static int ecdh_cms_encrypt(CMS_RecipientInfo *ri)
V_ASN1_UNDEF, NULL);
}
/* See if custom parameters set */
/* See if custom paraneters set */
kdf_type = EVP_PKEY_CTX_get_ecdh_kdf_type(pctx);
if (kdf_type <= 0)
goto err;
@@ -807,11 +891,11 @@ static int ecdh_cms_encrypt(CMS_RecipientInfo *ri)
if (EVP_PKEY_CTX_set_ecdh_kdf_type(pctx, kdf_type) <= 0)
goto err;
} else
/* Unknown KDF */
/* Uknown KDF */
goto err;
if (kdf_md == NULL) {
/* Fixme later for better MD */
kdf_md = EVP_get_default_digest();
kdf_md = EVP_sha1();
if (EVP_PKEY_CTX_set_ecdh_kdf_md(pctx, kdf_md) <= 0)
goto err;
}
@@ -831,11 +915,11 @@ static int ecdh_cms_encrypt(CMS_RecipientInfo *ri)
/* Package wrap algorithm in an AlgorithmIdentifier */
wrap_alg = X509_ALGOR_new();
if (wrap_alg == NULL)
if (!wrap_alg)
goto err;
wrap_alg->algorithm = OBJ_nid2obj(wrap_nid);
wrap_alg->parameter = ASN1_TYPE_new();
if (wrap_alg->parameter == NULL)
if (!wrap_alg->parameter)
goto err;
if (EVP_CIPHER_param_to_asn1(ctx, wrap_alg->parameter) <= 0)
goto err;
@@ -864,7 +948,7 @@ static int ecdh_cms_encrypt(CMS_RecipientInfo *ri)
if (!penc || !penclen)
goto err;
wrap_str = ASN1_STRING_new();
if (wrap_str == NULL)
if (!wrap_str)
goto err;
ASN1_STRING_set0(wrap_str, penc, penclen);
penc = NULL;
@@ -873,8 +957,10 @@ static int ecdh_cms_encrypt(CMS_RecipientInfo *ri)
rv = 1;
err:
OPENSSL_free(penc);
X509_ALGOR_free(wrap_alg);
if (penc)
OPENSSL_free(penc);
if (wrap_alg)
X509_ALGOR_free(wrap_alg);
return rv;
}