-/* crypto/dh/dh_lib.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2023 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 Apache License 2.0 (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
+ */
+
+/*
+ * DH low level APIs are deprecated for public use, but still ok for
+ * internal use.
*/
+#include "internal/deprecated.h"
#include <stdio.h>
-#include "cryptlib.h"
#include <openssl/bn.h>
-#include <openssl/dh.h>
-#ifndef OPENSSL_NO_ENGINE
+#ifndef FIPS_MODULE
# include <openssl/engine.h>
#endif
+#include <openssl/obj_mac.h>
+#include <openssl/core_names.h>
+#include "internal/cryptlib.h"
+#include "internal/refcount.h"
+#include "crypto/evp.h"
+#include "crypto/dh.h"
+#include "dh_local.h"
-const char DH_version[] = "Diffie-Hellman" OPENSSL_VERSION_PTEXT;
-
-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;
-}
+static DH *dh_new_intern(ENGINE *engine, OSSL_LIB_CTX *libctx);
+#ifndef FIPS_MODULE
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)
return 1;
}
+const DH_METHOD *ossl_dh_get_method(const DH *dh)
+{
+ return dh->meth;
+}
+# ifndef OPENSSL_NO_DEPRECATED_3_0
DH *DH_new(void)
{
- return DH_new_method(NULL);
+ return dh_new_intern(NULL, NULL);
}
+# endif
DH *DH_new_method(ENGINE *engine)
{
- DH *ret = OPENSSL_malloc(sizeof(DH));
+ return dh_new_intern(engine, NULL);
+}
+#endif /* !FIPS_MODULE */
+
+DH *ossl_dh_new_ex(OSSL_LIB_CTX *libctx)
+{
+ return dh_new_intern(NULL, libctx);
+}
+
+static DH *dh_new_intern(ENGINE *engine, OSSL_LIB_CTX *libctx)
+{
+ DH *ret = OPENSSL_zalloc(sizeof(*ret));
- if (ret == NULL) {
- DHerr(DH_F_DH_NEW_METHOD, ERR_R_MALLOC_FAILURE);
- return (NULL);
+ if (ret == NULL)
+ return NULL;
+
+ ret->lock = CRYPTO_THREAD_lock_new();
+ if (ret->lock == NULL) {
+ ERR_raise(ERR_LIB_DH, ERR_R_CRYPTO_LIB);
+ OPENSSL_free(ret);
+ return NULL;
+ }
+
+ if (!CRYPTO_NEW_REF(&ret->references, 1)) {
+ CRYPTO_THREAD_lock_free(ret->lock);
+ OPENSSL_free(ret);
+ return NULL;
}
+ ret->libctx = libctx;
ret->meth = DH_get_default_method();
-#ifndef OPENSSL_NO_ENGINE
+#if !defined(FIPS_MODULE) && !defined(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;
+ ERR_raise(ERR_LIB_DH, ERR_R_ENGINE_LIB);
+ 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) {
- DHerr(DH_F_DH_NEW_METHOD, ERR_R_ENGINE_LIB);
- ENGINE_finish(ret->engine);
- OPENSSL_free(ret);
- return NULL;
+ if (ret->meth == NULL) {
+ ERR_raise(ERR_LIB_DH, ERR_R_ENGINE_LIB);
+ goto err;
}
}
#endif
- ret->pad = 0;
- ret->version = 0;
- ret->p = NULL;
- ret->g = NULL;
- ret->length = 0;
- ret->pub_key = NULL;
- ret->priv_key = NULL;
- ret->q = NULL;
- ret->j = NULL;
- ret->seed = NULL;
- ret->seedlen = 0;
- ret->counter = NULL;
- ret->method_mont_p = NULL;
- ret->references = 1;
ret->flags = ret->meth->flags;
- CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data);
+
+#ifndef FIPS_MODULE
+ if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data))
+ goto err;
+#endif /* FIPS_MODULE */
+
+ ossl_ffc_params_init(&ret->params);
+
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);
- ret = NULL;
+ ERR_raise(ERR_LIB_DH, ERR_R_INIT_FAIL);
+ goto err;
}
- return (ret);
+
+ return ret;
+
+ err:
+ DH_free(ret);
+ return NULL;
}
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);
+ 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)
+ if (r->meth != NULL && r->meth->finish != NULL)
r->meth->finish(r);
-#ifndef OPENSSL_NO_ENGINE
- if (r->engine)
- ENGINE_finish(r->engine);
+#if !defined(FIPS_MODULE)
+# if !defined(OPENSSL_NO_ENGINE)
+ ENGINE_finish(r->engine);
+# endif
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DH, r, &r->ex_data);
#endif
- CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DH, r, &r->ex_data);
+ CRYPTO_THREAD_lock_free(r->lock);
+ CRYPTO_FREE_REF(&r->references);
- BN_clear_free(r->p);
- BN_clear_free(r->g);
- BN_clear_free(r->q);
- BN_clear_free(r->j);
- if (r->seed)
- OPENSSL_free(r->seed);
- BN_clear_free(r->counter);
+ ossl_ffc_params_cleanup(&r->params);
BN_clear_free(r->pub_key);
BN_clear_free(r->priv_key);
OPENSSL_free(r);
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) <= 0)
+ return 0;
+
+ REF_PRINT_COUNT("DH", r);
+ REF_ASSERT_ISNT(i < 2);
return ((i > 1) ? 1 : 0);
}
-int DH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
- CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
+void ossl_dh_set0_libctx(DH *d, OSSL_LIB_CTX *libctx)
{
- return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DH, argl, argp,
- new_func, dup_func, free_func);
+ d->libctx = libctx;
}
+#ifndef FIPS_MODULE
int DH_set_ex_data(DH *d, int idx, void *arg)
{
- return (CRYPTO_set_ex_data(&d->ex_data, idx, arg));
+ return CRYPTO_set_ex_data(&d->ex_data, idx, arg);
}
-void *DH_get_ex_data(DH *d, int idx)
+void *DH_get_ex_data(const DH *d, int idx)
{
- return (CRYPTO_get_ex_data(&d->ex_data, idx));
+ return CRYPTO_get_ex_data(&d->ex_data, idx);
+}
+#endif
+
+int DH_bits(const DH *dh)
+{
+ if (dh->params.p != NULL)
+ return BN_num_bits(dh->params.p);
+ return -1;
}
int DH_size(const DH *dh)
{
- return (BN_num_bytes(dh->p));
+ if (dh->params.p != NULL)
+ return BN_num_bytes(dh->params.p);
+ return -1;
}
int DH_security_bits(const DH *dh)
{
int N;
- if (dh->q)
- N = BN_num_bits(dh->q);
+
+ if (dh->params.q != NULL)
+ N = BN_num_bits(dh->params.q);
else if (dh->length)
N = dh->length;
else
N = -1;
- return BN_security_bits(BN_num_bits(dh->p), N);
+ if (dh->params.p != NULL)
+ return BN_security_bits(BN_num_bits(dh->params.p), N);
+ return -1;
+}
+
+void DH_get0_pqg(const DH *dh,
+ const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
+{
+ ossl_ffc_params_get0_pqg(&dh->params, p, q, g);
+}
+
+int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g)
+{
+ /*
+ * If the fields p and g in dh are NULL, the corresponding input
+ * parameters MUST be non-NULL. q may remain NULL.
+ */
+ if ((dh->params.p == NULL && p == NULL)
+ || (dh->params.g == NULL && g == NULL))
+ return 0;
+
+ ossl_ffc_params_set0_pqg(&dh->params, p, q, g);
+ ossl_dh_cache_named_group(dh);
+ dh->dirty_cnt++;
+ return 1;
+}
+
+long DH_get_length(const DH *dh)
+{
+ return dh->length;
+}
+
+int DH_set_length(DH *dh, long length)
+{
+ dh->length = length;
+ dh->dirty_cnt++;
+ 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 (pub_key != NULL) {
+ BN_clear_free(dh->pub_key);
+ dh->pub_key = pub_key;
+ }
+ if (priv_key != NULL) {
+ BN_clear_free(dh->priv_key);
+ dh->priv_key = priv_key;
+ }
+
+ dh->dirty_cnt++;
+ return 1;
+}
+
+const BIGNUM *DH_get0_p(const DH *dh)
+{
+ return dh->params.p;
+}
+
+const BIGNUM *DH_get0_q(const DH *dh)
+{
+ return dh->params.q;
+}
+
+const BIGNUM *DH_get0_g(const DH *dh)
+{
+ return dh->params.g;
+}
+
+const BIGNUM *DH_get0_priv_key(const DH *dh)
+{
+ return dh->priv_key;
+}
+
+const BIGNUM *DH_get0_pub_key(const DH *dh)
+{
+ return dh->pub_key;
+}
+
+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;
+}
+
+#ifndef FIPS_MODULE
+ENGINE *DH_get0_engine(DH *dh)
+{
+ return dh->engine;
+}
+#endif /*FIPS_MODULE */
+
+FFC_PARAMS *ossl_dh_get0_params(DH *dh)
+{
+ return &dh->params;
+}
+int ossl_dh_get0_nid(const DH *dh)
+{
+ return dh->params.nid;
}
projects / openssl.git / blobdiff