/*
- * Written by Nils Larsch for the OpenSSL project.
- */
-/* ====================================================================
- * Copyright (c) 1998-2005 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
- * openssl-core@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).
+ * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
*
- */
-/* ====================================================================
- * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
- * Portions originally developed by SUN MICROSYSTEMS, INC., and
- * contributed to the OpenSSL project.
+ * 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 <internal/cryptlib.h>
+#include "internal/cryptlib.h"
#include <string.h>
#include "ec_lcl.h"
#include <openssl/err.h>
-#ifndef OPENSSL_NO_ENGINE
-# include <openssl/engine.h>
-#endif
+#include <openssl/engine.h>
EC_KEY *EC_KEY_new(void)
{
if (r == NULL)
return;
- i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_EC);
+ CRYPTO_DOWN_REF(&r->references, &i, r->lock);
REF_PRINT_COUNT("EC_KEY", r);
if (i > 0)
return;
ENGINE_finish(r->engine);
#endif
+ if (r->group && r->group->meth->keyfinish)
+ r->group->meth->keyfinish(r);
+
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EC_KEY, r, &r->ex_data);
+ CRYPTO_THREAD_lock_free(r->lock);
EC_GROUP_free(r->group);
EC_POINT_free(r->pub_key);
BN_clear_free(r->priv_key);
OPENSSL_clear_free((void *)r, sizeof(EC_KEY));
}
-EC_KEY *EC_KEY_copy(EC_KEY *dest, EC_KEY *src)
+EC_KEY *EC_KEY_copy(EC_KEY *dest, const EC_KEY *src)
{
if (dest == NULL || src == NULL) {
ECerr(EC_F_EC_KEY_COPY, ERR_R_PASSED_NULL_PARAMETER);
if (src->meth != dest->meth) {
if (dest->meth->finish != NULL)
dest->meth->finish(dest);
+ if (dest->group && dest->group->meth->keyfinish)
+ dest->group->meth->keyfinish(dest);
#ifndef OPENSSL_NO_ENGINE
if (ENGINE_finish(dest->engine) == 0)
return 0;
return NULL;
if (!EC_GROUP_copy(dest->group, src->group))
return NULL;
- }
- /* copy the public key */
- if (src->pub_key != NULL && src->group != NULL) {
- EC_POINT_free(dest->pub_key);
- dest->pub_key = EC_POINT_new(src->group);
- if (dest->pub_key == NULL)
- return NULL;
- if (!EC_POINT_copy(dest->pub_key, src->pub_key))
- return NULL;
- }
- /* copy the private key */
- if (src->priv_key != NULL) {
- if (dest->priv_key == NULL) {
- dest->priv_key = BN_new();
- if (dest->priv_key == NULL)
+
+ /* copy the public key */
+ if (src->pub_key != NULL) {
+ EC_POINT_free(dest->pub_key);
+ dest->pub_key = EC_POINT_new(src->group);
+ if (dest->pub_key == NULL)
+ return NULL;
+ if (!EC_POINT_copy(dest->pub_key, src->pub_key))
+ return NULL;
+ }
+ /* copy the private key */
+ if (src->priv_key != NULL) {
+ if (dest->priv_key == NULL) {
+ dest->priv_key = BN_new();
+ if (dest->priv_key == NULL)
+ return NULL;
+ }
+ if (!BN_copy(dest->priv_key, src->priv_key))
+ return NULL;
+ if (src->group->meth->keycopy
+ && src->group->meth->keycopy(dest, src) == 0)
return NULL;
}
- if (!BN_copy(dest->priv_key, src->priv_key))
- return NULL;
}
+
/* copy the rest */
dest->enc_flag = src->enc_flag;
dest->conv_form = src->conv_form;
return dest;
}
-EC_KEY *EC_KEY_dup(EC_KEY *ec_key)
+EC_KEY *EC_KEY_dup(const EC_KEY *ec_key)
{
EC_KEY *ret = EC_KEY_new_method(ec_key->engine);
if (ret == NULL)
return NULL;
+
if (EC_KEY_copy(ret, ec_key) == NULL) {
EC_KEY_free(ret);
return NULL;
int EC_KEY_up_ref(EC_KEY *r)
{
- int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_EC);
+ int i;
+
+ if (CRYPTO_UP_REF(&r->references, &i, r->lock) <= 0)
+ return 0;
REF_PRINT_COUNT("EC_KEY", r);
REF_ASSERT_ISNT(i < 2);
return ((i > 1) ? 1 : 0);
}
+ENGINE *EC_KEY_get0_engine(const EC_KEY *eckey)
+{
+ return eckey->engine;
+}
+
int EC_KEY_generate_key(EC_KEY *eckey)
{
if (eckey == NULL || eckey->group == NULL) {
}
int ossl_ec_key_gen(EC_KEY *eckey)
+{
+ OPENSSL_assert(eckey->group->meth->keygen != NULL);
+ return eckey->group->meth->keygen(eckey);
+}
+
+int ec_key_simple_generate_key(EC_KEY *eckey)
{
int ok = 0;
BN_CTX *ctx = NULL;
goto err;
do
- if (!BN_rand_range(priv_key, order))
+ if (!BN_priv_rand_range(priv_key, order))
goto err;
while (BN_is_zero(priv_key)) ;
if (eckey->priv_key != priv_key)
BN_free(priv_key);
BN_CTX_free(ctx);
- return (ok);
+ return ok;
+}
+
+int ec_key_simple_generate_public_key(EC_KEY *eckey)
+{
+ return EC_POINT_mul(eckey->group, eckey->pub_key, eckey->priv_key, NULL,
+ NULL, NULL);
}
int EC_KEY_check_key(const EC_KEY *eckey)
+{
+ if (eckey == NULL || eckey->group == NULL || eckey->pub_key == NULL) {
+ ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+
+ if (eckey->group->meth->keycheck == NULL) {
+ ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+ return 0;
+ }
+
+ return eckey->group->meth->keycheck(eckey);
+}
+
+int ec_key_simple_check_key(const EC_KEY *eckey)
{
int ok = 0;
BN_CTX *ctx = NULL;
EC_POINT *point = NULL;
if (eckey == NULL || eckey->group == NULL || eckey->pub_key == NULL) {
- ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER);
+ ECerr(EC_F_EC_KEY_SIMPLE_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key)) {
- ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_AT_INFINITY);
+ ECerr(EC_F_EC_KEY_SIMPLE_CHECK_KEY, EC_R_POINT_AT_INFINITY);
goto err;
}
/* testing whether the pub_key is on the elliptic curve */
if (EC_POINT_is_on_curve(eckey->group, eckey->pub_key, ctx) <= 0) {
- ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_IS_NOT_ON_CURVE);
+ ECerr(EC_F_EC_KEY_SIMPLE_CHECK_KEY, EC_R_POINT_IS_NOT_ON_CURVE);
goto err;
}
/* testing whether pub_key * order is the point at infinity */
order = eckey->group->order;
if (BN_is_zero(order)) {
- ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_GROUP_ORDER);
+ ECerr(EC_F_EC_KEY_SIMPLE_CHECK_KEY, EC_R_INVALID_GROUP_ORDER);
goto err;
}
if (!EC_POINT_mul(eckey->group, point, NULL, eckey->pub_key, order, ctx)) {
- ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
+ ECerr(EC_F_EC_KEY_SIMPLE_CHECK_KEY, ERR_R_EC_LIB);
goto err;
}
if (!EC_POINT_is_at_infinity(eckey->group, point)) {
- ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER);
+ ECerr(EC_F_EC_KEY_SIMPLE_CHECK_KEY, EC_R_WRONG_ORDER);
goto err;
}
/*
*/
if (eckey->priv_key != NULL) {
if (BN_cmp(eckey->priv_key, order) >= 0) {
- ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER);
+ ECerr(EC_F_EC_KEY_SIMPLE_CHECK_KEY, EC_R_WRONG_ORDER);
goto err;
}
if (!EC_POINT_mul(eckey->group, point, eckey->priv_key,
NULL, NULL, ctx)) {
- ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
+ ECerr(EC_F_EC_KEY_SIMPLE_CHECK_KEY, ERR_R_EC_LIB);
goto err;
}
if (EC_POINT_cmp(eckey->group, point, eckey->pub_key, ctx) != 0) {
- ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_PRIVATE_KEY);
+ ECerr(EC_F_EC_KEY_SIMPLE_CHECK_KEY, EC_R_INVALID_PRIVATE_KEY);
goto err;
}
}
err:
BN_CTX_free(ctx);
EC_POINT_free(point);
- return (ok);
+ return ok;
}
int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x,
}
ctx = BN_CTX_new();
if (ctx == NULL)
- goto err;
+ return 0;
+ BN_CTX_start(ctx);
point = EC_POINT_new(key->group);
if (point == NULL)
ok = 1;
err:
+ BN_CTX_end(ctx);
BN_CTX_free(ctx);
EC_POINT_free(point);
return ok;
int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *priv_key)
{
+ if (key->group == NULL || key->group->meth == NULL)
+ return 0;
+ if (key->group->meth->set_private != NULL
+ && key->group->meth->set_private(key, priv_key) == 0)
+ return 0;
if (key->meth->set_private != NULL
&& key->meth->set_private(key, priv_key) == 0)
return 0;
key->pub_key = EC_POINT_new(key->group);
if (key->pub_key == NULL)
return 0;
- return EC_POINT_oct2point(key->group, key->pub_key, buf, len, ctx);
+ if (EC_POINT_oct2point(key->group, key->pub_key, buf, len, ctx) == 0)
+ return 0;
+ /*
+ * Save the point conversion form.
+ * For non-custom curves the first octet of the buffer (excluding
+ * the last significant bit) contains the point conversion form.
+ * EC_POINT_oct2point() has already performed sanity checking of
+ * the buffer so we know it is valid.
+ */
+ if ((key->group->meth->flags & EC_FLAGS_CUSTOM_CURVE) == 0)
+ key->conv_form = (point_conversion_form_t)(buf[0] & ~0x01);
+ return 1;
}
-size_t EC_KEY_priv2oct(const EC_KEY *eckey, unsigned char *buf, size_t len)
+size_t EC_KEY_priv2oct(const EC_KEY *eckey,
+ unsigned char *buf, size_t len)
{
- size_t buf_len;
if (eckey->group == NULL || eckey->group->meth == NULL)
return 0;
+ if (eckey->group->meth->priv2oct == NULL) {
+ ECerr(EC_F_EC_KEY_PRIV2OCT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+ return 0;
+ }
+
+ return eckey->group->meth->priv2oct(eckey, buf, len);
+}
+
+size_t ec_key_simple_priv2oct(const EC_KEY *eckey,
+ unsigned char *buf, size_t len)
+{
+ size_t buf_len;
- buf_len = (EC_GROUP_get_degree(eckey->group) + 7) / 8;
+ buf_len = (EC_GROUP_order_bits(eckey->group) + 7) / 8;
if (eckey->priv_key == NULL)
return 0;
if (buf == NULL)
/* Octetstring may need leading zeros if BN is to short */
if (BN_bn2binpad(eckey->priv_key, buf, buf_len) == -1) {
- ECerr(EC_F_EC_KEY_PRIV2OCT, EC_R_BUFFER_TOO_SMALL);
+ ECerr(EC_F_EC_KEY_SIMPLE_PRIV2OCT, EC_R_BUFFER_TOO_SMALL);
return 0;
}
return buf_len;
}
-int EC_KEY_oct2priv(EC_KEY *eckey, unsigned char *buf, size_t len)
+int EC_KEY_oct2priv(EC_KEY *eckey, const unsigned char *buf, size_t len)
{
if (eckey->group == NULL || eckey->group->meth == NULL)
return 0;
+ if (eckey->group->meth->oct2priv == NULL) {
+ ECerr(EC_F_EC_KEY_OCT2PRIV, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+ return 0;
+ }
+ return eckey->group->meth->oct2priv(eckey, buf, len);
+}
+int ec_key_simple_oct2priv(EC_KEY *eckey, const unsigned char *buf, size_t len)
+{
if (eckey->priv_key == NULL)
eckey->priv_key = BN_secure_new();
if (eckey->priv_key == NULL) {
- ECerr(EC_F_EC_KEY_OCT2PRIV, ERR_R_MALLOC_FAILURE);
+ ECerr(EC_F_EC_KEY_SIMPLE_OCT2PRIV, ERR_R_MALLOC_FAILURE);
return 0;
}
eckey->priv_key = BN_bin2bn(buf, len, eckey->priv_key);
if (eckey->priv_key == NULL) {
- ECerr(EC_F_EC_KEY_OCT2PRIV, ERR_R_BN_LIB);
+ ECerr(EC_F_EC_KEY_SIMPLE_OCT2PRIV, ERR_R_BN_LIB);
return 0;
}
return 1;
*pbuf = buf;
return len;
}
+
+int EC_KEY_can_sign(const EC_KEY *eckey)
+{
+ if (eckey->group == NULL || eckey->group->meth == NULL
+ || (eckey->group->meth->flags & EC_FLAGS_NO_SIGN))
+ return 0;
+ return 1;
+}
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