-/* crypto/dh/dh_lib.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * 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 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 acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS 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 AUTHOR OR 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.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
+ * 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 "internal/refcount.h"
#include <openssl/bn.h>
-#include <openssl/dh.h>
-#ifndef OPENSSL_NO_ENGINE
-# include <openssl/engine.h>
-#endif
-
-static const DH_METHOD *default_DH_method = NULL;
-
-void DH_set_default_method(const DH_METHOD *meth)
-{
- default_DH_method = meth;
-}
-
-const DH_METHOD *DH_get_default_method(void)
-{
- if (!default_DH_method)
- default_DH_method = DH_OpenSSL();
- return default_DH_method;
-}
+#include "dh_locl.h"
+#include <openssl/engine.h>
int DH_set_method(DH *dh, const DH_METHOD *meth)
{
if (mtmp->finish)
mtmp->finish(dh);
#ifndef OPENSSL_NO_ENGINE
- if (dh->engine) {
- ENGINE_finish(dh->engine);
- dh->engine = NULL;
- }
+ ENGINE_finish(dh->engine);
+ dh->engine = NULL;
#endif
dh->meth = meth;
if (meth->init)
if (ret == NULL) {
DHerr(DH_F_DH_NEW_METHOD, ERR_R_MALLOC_FAILURE);
- return (NULL);
+ return NULL;
+ }
+
+ ret->references = 1;
+ ret->lock = CRYPTO_THREAD_lock_new();
+ if (ret->lock == NULL) {
+ DHerr(DH_F_DH_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+ OPENSSL_free(ret);
+ return NULL;
}
ret->meth = DH_get_default_method();
#ifndef OPENSSL_NO_ENGINE
+ ret->flags = ret->meth->flags; /* early default init */
if (engine) {
if (!ENGINE_init(engine)) {
DHerr(DH_F_DH_NEW_METHOD, ERR_R_ENGINE_LIB);
- OPENSSL_free(ret);
- return NULL;
+ goto err;
}
ret->engine = engine;
} else
ret->engine = ENGINE_get_default_DH();
if (ret->engine) {
ret->meth = ENGINE_get_DH(ret->engine);
- if (!ret->meth) {
+ if (ret->meth == NULL) {
DHerr(DH_F_DH_NEW_METHOD, ERR_R_ENGINE_LIB);
- ENGINE_finish(ret->engine);
- OPENSSL_free(ret);
- return NULL;
+ goto err;
}
}
#endif
- ret->references = 1;
ret->flags = ret->meth->flags;
- CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data);
+
+ if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data))
+ goto err;
+
if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
-#ifndef OPENSSL_NO_ENGINE
- if (ret->engine)
- ENGINE_finish(ret->engine);
-#endif
- CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data);
- OPENSSL_free(ret);
+ DHerr(DH_F_DH_NEW_METHOD, ERR_R_INIT_FAIL);
+err:
+ DH_free(ret);
ret = NULL;
}
- return (ret);
+
+ return ret;
}
void DH_free(DH *r)
if (r == NULL)
return;
- i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_DH);
-#ifdef REF_PRINT
- REF_PRINT("DH", r);
-#endif
+
+ CRYPTO_DOWN_REF(&r->references, &i, r->lock);
+ REF_PRINT_COUNT("DH", r);
if (i > 0)
return;
-#ifdef REF_CHECK
- if (i < 0) {
- fprintf(stderr, "DH_free, bad reference count\n");
- abort();
- }
-#endif
+ REF_ASSERT_ISNT(i < 0);
if (r->meth->finish)
r->meth->finish(r);
#ifndef OPENSSL_NO_ENGINE
- if (r->engine)
- ENGINE_finish(r->engine);
+ ENGINE_finish(r->engine);
#endif
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DH, r, &r->ex_data);
+ CRYPTO_THREAD_lock_free(r->lock);
+
BN_clear_free(r->p);
BN_clear_free(r->g);
BN_clear_free(r->q);
int DH_up_ref(DH *r)
{
- int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_DH);
-#ifdef REF_PRINT
- REF_PRINT("DH", r);
-#endif
-#ifdef REF_CHECK
- if (i < 2) {
- fprintf(stderr, "DH_up, bad reference count\n");
- abort();
- }
-#endif
+ int i;
+
+ if (CRYPTO_UP_REF(&r->references, &i, r->lock) <= 0)
+ return 0;
+
+ REF_PRINT_COUNT("DH", r);
+ REF_ASSERT_ISNT(i < 2);
return ((i > 1) ? 1 : 0);
}
N = -1;
return BN_security_bits(BN_num_bits(dh->p), N);
}
+
+
+void DH_get0_pqg(const DH *dh,
+ const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
+{
+ if (p != NULL)
+ *p = dh->p;
+ if (q != NULL)
+ *q = dh->q;
+ if (g != NULL)
+ *g = dh->g;
+}
+
+int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g)
+{
+ /* If the fields p and g in d are NULL, the corresponding input
+ * parameters MUST be non-NULL. q may remain NULL.
+ */
+ if ((dh->p == NULL && p == NULL)
+ || (dh->g == NULL && g == NULL))
+ return 0;
+
+ if (p != NULL) {
+ BN_free(dh->p);
+ dh->p = p;
+ }
+ if (q != NULL) {
+ BN_free(dh->q);
+ dh->q = q;
+ }
+ if (g != NULL) {
+ BN_free(dh->g);
+ dh->g = g;
+ }
+
+ if (q != NULL) {
+ dh->length = BN_num_bits(q);
+ }
+
+ return 1;
+}
+
+long DH_get_length(const DH *dh)
+{
+ return dh->length;
+}
+
+int DH_set_length(DH *dh, long length)
+{
+ dh->length = length;
+ return 1;
+}
+
+void DH_get0_key(const DH *dh, const BIGNUM **pub_key, const BIGNUM **priv_key)
+{
+ if (pub_key != NULL)
+ *pub_key = dh->pub_key;
+ if (priv_key != NULL)
+ *priv_key = dh->priv_key;
+}
+
+int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key)
+{
+ /* If the field pub_key in dh is NULL, the corresponding input
+ * parameters MUST be non-NULL. The priv_key field may
+ * be left NULL.
+ */
+ if (dh->pub_key == NULL && pub_key == NULL)
+ return 0;
+
+ if (pub_key != NULL) {
+ BN_free(dh->pub_key);
+ dh->pub_key = pub_key;
+ }
+ if (priv_key != NULL) {
+ BN_free(dh->priv_key);
+ dh->priv_key = priv_key;
+ }
+
+ return 1;
+}
+
+void DH_clear_flags(DH *dh, int flags)
+{
+ dh->flags &= ~flags;
+}
+
+int DH_test_flags(const DH *dh, int flags)
+{
+ return dh->flags & flags;
+}
+
+void DH_set_flags(DH *dh, int flags)
+{
+ dh->flags |= flags;
+}
+
+ENGINE *DH_get0_engine(DH *dh)
+{
+ return dh->engine;
+}
projects / openssl.git / blobdiff