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-rw-r--r--thirdparty/openssl/crypto/ecdh/ech_lib.c265
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diff --git a/thirdparty/openssl/crypto/ecdh/ech_lib.c b/thirdparty/openssl/crypto/ecdh/ech_lib.c
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+/* crypto/ecdh/ech_lib.c */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ *
+ * The Elliptic Curve Public-Key Crypto Library (ECC Code) included
+ * herein is developed by SUN MICROSYSTEMS, INC., and is contributed
+ * to the OpenSSL project.
+ *
+ * The ECC Code is licensed pursuant to the OpenSSL open source
+ * license provided below.
+ *
+ * The ECDH software is originally written by Douglas Stebila of
+ * Sun Microsystems Laboratories.
+ *
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2003 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).
+ *
+ */
+
+#include "ech_locl.h"
+#include <string.h>
+#ifndef OPENSSL_NO_ENGINE
+# include <openssl/engine.h>
+#endif
+#include <openssl/err.h>
+#ifdef OPENSSL_FIPS
+# include <openssl/fips.h>
+#endif
+
+const char ECDH_version[] = "ECDH" OPENSSL_VERSION_PTEXT;
+
+static const ECDH_METHOD *default_ECDH_method = NULL;
+
+static void *ecdh_data_new(void);
+static void *ecdh_data_dup(void *);
+static void ecdh_data_free(void *);
+
+void ECDH_set_default_method(const ECDH_METHOD *meth)
+{
+ default_ECDH_method = meth;
+}
+
+const ECDH_METHOD *ECDH_get_default_method(void)
+{
+ if (!default_ECDH_method) {
+#ifdef OPENSSL_FIPS
+ if (FIPS_mode())
+ return FIPS_ecdh_openssl();
+ else
+ return ECDH_OpenSSL();
+#else
+ default_ECDH_method = ECDH_OpenSSL();
+#endif
+ }
+ return default_ECDH_method;
+}
+
+int ECDH_set_method(EC_KEY *eckey, const ECDH_METHOD *meth)
+{
+ ECDH_DATA *ecdh;
+
+ ecdh = ecdh_check(eckey);
+
+ if (ecdh == NULL)
+ return 0;
+
+#if 0
+ mtmp = ecdh->meth;
+ if (mtmp->finish)
+ mtmp->finish(eckey);
+#endif
+#ifndef OPENSSL_NO_ENGINE
+ if (ecdh->engine) {
+ ENGINE_finish(ecdh->engine);
+ ecdh->engine = NULL;
+ }
+#endif
+ ecdh->meth = meth;
+#if 0
+ if (meth->init)
+ meth->init(eckey);
+#endif
+ return 1;
+}
+
+static ECDH_DATA *ECDH_DATA_new_method(ENGINE *engine)
+{
+ ECDH_DATA *ret;
+
+ ret = (ECDH_DATA *)OPENSSL_malloc(sizeof(ECDH_DATA));
+ if (ret == NULL) {
+ ECDHerr(ECDH_F_ECDH_DATA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+ return (NULL);
+ }
+
+ ret->init = NULL;
+
+ ret->meth = ECDH_get_default_method();
+ ret->engine = engine;
+#ifndef OPENSSL_NO_ENGINE
+ if (!ret->engine)
+ ret->engine = ENGINE_get_default_ECDH();
+ if (ret->engine) {
+ ret->meth = ENGINE_get_ECDH(ret->engine);
+ if (!ret->meth) {
+ ECDHerr(ECDH_F_ECDH_DATA_NEW_METHOD, ERR_R_ENGINE_LIB);
+ ENGINE_finish(ret->engine);
+ OPENSSL_free(ret);
+ return NULL;
+ }
+ }
+#endif
+
+ ret->flags = ret->meth->flags;
+ CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ECDH, ret, &ret->ex_data);
+#if 0
+ if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDH, ret, &ret->ex_data);
+ OPENSSL_free(ret);
+ ret = NULL;
+ }
+#endif
+ return (ret);
+}
+
+static void *ecdh_data_new(void)
+{
+ return (void *)ECDH_DATA_new_method(NULL);
+}
+
+static void *ecdh_data_dup(void *data)
+{
+ ECDH_DATA *r = (ECDH_DATA *)data;
+
+ /* XXX: dummy operation */
+ if (r == NULL)
+ return NULL;
+
+ return (void *)ecdh_data_new();
+}
+
+void ecdh_data_free(void *data)
+{
+ ECDH_DATA *r = (ECDH_DATA *)data;
+
+#ifndef OPENSSL_NO_ENGINE
+ if (r->engine)
+ ENGINE_finish(r->engine);
+#endif
+
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDH, r, &r->ex_data);
+
+ OPENSSL_cleanse((void *)r, sizeof(ECDH_DATA));
+
+ OPENSSL_free(r);
+}
+
+ECDH_DATA *ecdh_check(EC_KEY *key)
+{
+ ECDH_DATA *ecdh_data;
+
+ void *data = EC_KEY_get_key_method_data(key, ecdh_data_dup,
+ ecdh_data_free, ecdh_data_free);
+ if (data == NULL) {
+ ecdh_data = (ECDH_DATA *)ecdh_data_new();
+ if (ecdh_data == NULL)
+ return NULL;
+ data = EC_KEY_insert_key_method_data(key, (void *)ecdh_data,
+ ecdh_data_dup, ecdh_data_free,
+ ecdh_data_free);
+ if (data != NULL) {
+ /*
+ * Another thread raced us to install the key_method data and
+ * won.
+ */
+ ecdh_data_free(ecdh_data);
+ ecdh_data = (ECDH_DATA *)data;
+ }
+ } else
+ ecdh_data = (ECDH_DATA *)data;
+#ifdef OPENSSL_FIPS
+ if (FIPS_mode() && !(ecdh_data->flags & ECDH_FLAG_FIPS_METHOD)
+ && !(EC_KEY_get_flags(key) & EC_FLAG_NON_FIPS_ALLOW)) {
+ ECDHerr(ECDH_F_ECDH_CHECK, ECDH_R_NON_FIPS_METHOD);
+ return NULL;
+ }
+#endif
+
+ return ecdh_data;
+}
+
+int ECDH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
+ CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
+{
+ return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ECDH, argl, argp,
+ new_func, dup_func, free_func);
+}
+
+int ECDH_set_ex_data(EC_KEY *d, int idx, void *arg)
+{
+ ECDH_DATA *ecdh;
+ ecdh = ecdh_check(d);
+ if (ecdh == NULL)
+ return 0;
+ return (CRYPTO_set_ex_data(&ecdh->ex_data, idx, arg));
+}
+
+void *ECDH_get_ex_data(EC_KEY *d, int idx)
+{
+ ECDH_DATA *ecdh;
+ ecdh = ecdh_check(d);
+ if (ecdh == NULL)
+ return NULL;
+ return (CRYPTO_get_ex_data(&ecdh->ex_data, idx));
+}
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