ssl/libcrypto/src/crypto/engine/tb_ecdsa.c
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 14 May 2010 17:34:04 +0300
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permissions -rw-r--r--
Revision: 201019 Kit: 201019
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/* ====================================================================
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 * Copyright (c) 2000-2002 The OpenSSL Project.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer. 
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 *
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in
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 *    the documentation and/or other materials provided with the
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 *    distribution.
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 *
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 * 3. All advertising materials mentioning features or use of this
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 *    software must display the following acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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 *
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 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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 *    endorse or promote products derived from this software without
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 *    prior written permission. For written permission, please contact
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 *    licensing@OpenSSL.org.
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 *
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 * 5. Products derived from this software may not be called "OpenSSL"
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 *    nor may "OpenSSL" appear in their names without prior written
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 *    permission of the OpenSSL Project.
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 *
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 * 6. Redistributions of any form whatsoever must retain the following
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 *    acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 * OF THE POSSIBILITY OF SUCH DAMAGE.
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 * ====================================================================
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 *
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 * This product includes cryptographic software written by Eric Young
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 * (eay@cryptsoft.com).  This product includes software written by Tim
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 * Hudson (tjh@cryptsoft.com).
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 *
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 */
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 /*
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 © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
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 */
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#include "eng_int.h"
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#if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
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#include "libcrypto_wsd_macros.h"
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#include "libcrypto_wsd.h"
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#endif
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/* If this symbol is defined then ENGINE_get_default_ECDSA(), the function that is
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 * used by ECDSA to hook in implementation code and cache defaults (etc), will
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 * display brief debugging summaries to stderr with the 'nid'. */
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/* #define ENGINE_ECDSA_DEBUG */
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#ifndef EMULATOR
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static ENGINE_TABLE *ecdsa_table = NULL;
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#else
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GET_STATIC_VAR_FROM_TLS(ecdsa_table,tb_ecdsa,ENGINE_TABLE *)
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#define ecdsa_table (*GET_WSD_VAR_NAME(ecdsa_table,tb_ecdsa, s)())
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#endif
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static const int dummy_nid = 1;
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void ENGINE_unregister_ECDSA(ENGINE *e)
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	{
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	engine_table_unregister(&ecdsa_table, e);
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	}
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static void engine_unregister_all_ECDSA(void)
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	{
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	engine_table_cleanup(&ecdsa_table);
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	}
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int ENGINE_register_ECDSA(ENGINE *e)
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	{
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	if(e->ecdsa_meth)
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		return engine_table_register(&ecdsa_table,
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				engine_unregister_all_ECDSA, e, &dummy_nid, 1, 0);
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	return 1;
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	}
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void ENGINE_register_all_ECDSA()
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	{
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	ENGINE *e;
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	for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
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		ENGINE_register_ECDSA(e);
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	}
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int ENGINE_set_default_ECDSA(ENGINE *e)
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	{
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	if(e->ecdsa_meth)
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		return engine_table_register(&ecdsa_table,
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				engine_unregister_all_ECDSA, e, &dummy_nid, 1, 1);
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	return 1;
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	}
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/* Exposed API function to get a functional reference from the implementation
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 * table (ie. try to get a functional reference from the tabled structural
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 * references). */
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ENGINE *ENGINE_get_default_ECDSA(void)
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	{
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	return engine_table_select(&ecdsa_table, dummy_nid);
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	}
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/* Obtains an ECDSA implementation from an ENGINE functional reference */
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const ECDSA_METHOD *ENGINE_get_ECDSA(const ENGINE *e)
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	{
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	return e->ecdsa_meth;
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	}
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/* Sets an ECDSA implementation in an ENGINE structure */
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int ENGINE_set_ECDSA(ENGINE *e, const ECDSA_METHOD *ecdsa_meth)
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	{
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	e->ecdsa_meth = ecdsa_meth;
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	return 1;
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	}