GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/engine/eng_openssl.c Lines: 0 61 0.0 %
Date: 2017-11-07 Branches: 0 40 0.0 %

Line Branch Exec Source
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/* $OpenBSD: eng_openssl.c,v 1.12 2015/12/07 03:30:09 bcook Exp $ */
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/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
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 * project 2000.
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 */
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/* ====================================================================
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 * Copyright (c) 1999-2001 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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 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
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 * ECDH support in OpenSSL originally developed by
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 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
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 */
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#include <stdio.h>
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#include <string.h>
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#include <openssl/opensslconf.h>
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#include <openssl/crypto.h>
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#include <openssl/dso.h>
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#include <openssl/engine.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/pem.h>
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#include <openssl/rand.h>
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#ifndef OPENSSL_NO_DH
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#include <openssl/dh.h>
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#endif
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#ifndef OPENSSL_NO_DSA
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#include <openssl/dsa.h>
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#endif
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#ifndef OPENSSL_NO_RSA
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#include <openssl/rsa.h>
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#endif
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/* This testing gunk is implemented (and explained) lower down. It also assumes
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 * the application explicitly calls "ENGINE_load_openssl()" because this is no
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 * longer automatic in ENGINE_load_builtin_engines(). */
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#define TEST_ENG_OPENSSL_RC4
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#define TEST_ENG_OPENSSL_PKEY
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/* #define TEST_ENG_OPENSSL_RC4_OTHERS */
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#define TEST_ENG_OPENSSL_RC4_P_INIT
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/* #define TEST_ENG_OPENSSL_RC4_P_CIPHER */
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#define TEST_ENG_OPENSSL_SHA
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/* #define TEST_ENG_OPENSSL_SHA_OTHERS */
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/* #define TEST_ENG_OPENSSL_SHA_P_INIT */
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/* #define TEST_ENG_OPENSSL_SHA_P_UPDATE */
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/* #define TEST_ENG_OPENSSL_SHA_P_FINAL */
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/* Now check what of those algorithms are actually enabled */
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#ifdef OPENSSL_NO_RC4
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#undef TEST_ENG_OPENSSL_RC4
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#undef TEST_ENG_OPENSSL_RC4_OTHERS
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#undef TEST_ENG_OPENSSL_RC4_P_INIT
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#undef TEST_ENG_OPENSSL_RC4_P_CIPHER
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#endif
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#if defined(OPENSSL_NO_SHA) || defined(OPENSSL_NO_SHA1)
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#undef TEST_ENG_OPENSSL_SHA
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#undef TEST_ENG_OPENSSL_SHA_OTHERS
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#undef TEST_ENG_OPENSSL_SHA_P_INIT
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#undef TEST_ENG_OPENSSL_SHA_P_UPDATE
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#undef TEST_ENG_OPENSSL_SHA_P_FINAL
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#endif
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#ifdef TEST_ENG_OPENSSL_RC4
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static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
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    const int **nids, int nid);
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#endif
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#ifdef TEST_ENG_OPENSSL_SHA
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static int openssl_digests(ENGINE *e, const EVP_MD **digest,
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    const int **nids, int nid);
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#endif
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#ifdef TEST_ENG_OPENSSL_PKEY
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static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id,
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    UI_METHOD *ui_method, void *callback_data);
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#endif
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/* The constants used when creating the ENGINE */
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static const char *engine_openssl_id = "openssl";
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static const char *engine_openssl_name = "Software engine support";
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/* This internal function is used by ENGINE_openssl() and possibly by the
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 * "dynamic" ENGINE support too */
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static int
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bind_helper(ENGINE *e)
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{
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	if (!ENGINE_set_id(e, engine_openssl_id) ||
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	    !ENGINE_set_name(e, engine_openssl_name)
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#ifndef TEST_ENG_OPENSSL_NO_ALGORITHMS
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#ifndef OPENSSL_NO_RSA
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	    || !ENGINE_set_RSA(e, RSA_get_default_method())
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#endif
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#ifndef OPENSSL_NO_DSA
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	    || !ENGINE_set_DSA(e, DSA_get_default_method())
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#endif
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#ifndef OPENSSL_NO_ECDH
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	    || !ENGINE_set_ECDH(e, ECDH_OpenSSL())
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#endif
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#ifndef OPENSSL_NO_ECDSA
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	    || !ENGINE_set_ECDSA(e, ECDSA_OpenSSL())
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#endif
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#ifndef OPENSSL_NO_DH
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	    || !ENGINE_set_DH(e, DH_get_default_method())
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#endif
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	    || !ENGINE_set_RAND(e, RAND_SSLeay())
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#ifdef TEST_ENG_OPENSSL_RC4
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	    || !ENGINE_set_ciphers(e, openssl_ciphers)
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#endif
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#ifdef TEST_ENG_OPENSSL_SHA
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	    || !ENGINE_set_digests(e, openssl_digests)
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#endif
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#endif
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#ifdef TEST_ENG_OPENSSL_PKEY
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	    || !ENGINE_set_load_privkey_function(e, openssl_load_privkey)
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#endif
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		)
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		return 0;
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	/* If we add errors to this ENGINE, ensure the error handling is setup here */
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	/* openssl_load_error_strings(); */
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	return 1;
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}
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static ENGINE *
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engine_openssl(void)
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{
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	ENGINE *ret = ENGINE_new();
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	if (!ret)
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		return NULL;
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	if (!bind_helper(ret)) {
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		ENGINE_free(ret);
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		return NULL;
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	}
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	return ret;
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}
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void
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ENGINE_load_openssl(void)
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{
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	ENGINE *toadd = engine_openssl();
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	if (!toadd)
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		return;
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	(void) ENGINE_add(toadd);
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	/* If the "add" worked, it gets a structural reference. So either way,
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	 * we release our just-created reference. */
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	ENGINE_free(toadd);
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	ERR_clear_error();
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}
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/* This stuff is needed if this ENGINE is being compiled into a self-contained
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 * shared-library. */
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#ifdef ENGINE_DYNAMIC_SUPPORT
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static int
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bind_fn(ENGINE *e, const char *id)
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{
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	if (id && (strcmp(id, engine_openssl_id) != 0))
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		return 0;
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	if (!bind_helper(e))
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		return 0;
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	return 1;
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}
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IMPLEMENT_DYNAMIC_CHECK_FN()
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IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
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#endif /* ENGINE_DYNAMIC_SUPPORT */
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#ifdef TEST_ENG_OPENSSL_RC4
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/* This section of code compiles an "alternative implementation" of two modes of
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 * RC4 into this ENGINE. The result is that EVP_CIPHER operation for "rc4"
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 * should under normal circumstances go via this support rather than the default
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 * EVP support. There are other symbols to tweak the testing;
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 *    TEST_ENC_OPENSSL_RC4_OTHERS - print a one line message to stderr each time
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 *        we're asked for a cipher we don't support (should not happen).
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 *    TEST_ENG_OPENSSL_RC4_P_INIT - print a one line message to stderr each time
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 *        the "init_key" handler is called.
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 *    TEST_ENG_OPENSSL_RC4_P_CIPHER - ditto for the "cipher" handler.
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 */
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#include <openssl/rc4.h>
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#define TEST_RC4_KEY_SIZE		16
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static int test_cipher_nids[] = {NID_rc4, NID_rc4_40};
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static int test_cipher_nids_number = 2;
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typedef struct {
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	unsigned char key[TEST_RC4_KEY_SIZE];
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	RC4_KEY ks;
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} TEST_RC4_KEY;
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#define test(ctx) ((TEST_RC4_KEY *)(ctx)->cipher_data)
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static int
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test_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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    const unsigned char *iv, int enc)
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{
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#ifdef TEST_ENG_OPENSSL_RC4_P_INIT
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	fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_init_key() called\n");
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#endif
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	memcpy(&test(ctx)->key[0], key, EVP_CIPHER_CTX_key_length(ctx));
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	RC4_set_key(&test(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx),
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	    test(ctx)->key);
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	return 1;
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}
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static int
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test_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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    const unsigned char *in, size_t inl)
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{
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#ifdef TEST_ENG_OPENSSL_RC4_P_CIPHER
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	fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_cipher() called\n");
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#endif
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	RC4(&test(ctx)->ks, inl, in, out);
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	return 1;
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}
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static const EVP_CIPHER test_r4_cipher = {
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	NID_rc4,
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	1, TEST_RC4_KEY_SIZE, 0,
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	EVP_CIPH_VARIABLE_LENGTH,
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	test_rc4_init_key,
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	test_rc4_cipher,
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	NULL,
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	sizeof(TEST_RC4_KEY),
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	NULL,
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	NULL,
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	NULL,
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	NULL
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};
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static const EVP_CIPHER test_r4_40_cipher = {
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	NID_rc4_40,
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	1,5 /* 40 bit */,0,
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	EVP_CIPH_VARIABLE_LENGTH,
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	test_rc4_init_key,
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	test_rc4_cipher,
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	NULL,
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	sizeof(TEST_RC4_KEY),
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	NULL,
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	NULL,
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	NULL,
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	NULL
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};
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static int
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openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher, const int **nids, int nid)
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{
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	if (!cipher) {
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		/* We are returning a list of supported nids */
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		*nids = test_cipher_nids;
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		return test_cipher_nids_number;
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	}
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	/* We are being asked for a specific cipher */
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	if (nid == NID_rc4)
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		*cipher = &test_r4_cipher;
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	else if (nid == NID_rc4_40)
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		*cipher = &test_r4_40_cipher;
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	else {
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#ifdef TEST_ENG_OPENSSL_RC4_OTHERS
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		fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) returning NULL for "
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		    "nid %d\n", nid);
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#endif
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		*cipher = NULL;
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		return 0;
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	}
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	return 1;
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}
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#endif
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#ifdef TEST_ENG_OPENSSL_SHA
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/* Much the same sort of comment as for TEST_ENG_OPENSSL_RC4 */
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#include <openssl/sha.h>
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static int test_digest_nids[] = {NID_sha1};
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static int test_digest_nids_number = 1;
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static int
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test_sha1_init(EVP_MD_CTX *ctx)
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{
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#ifdef TEST_ENG_OPENSSL_SHA_P_INIT
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	fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_init() called\n");
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#endif
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	return SHA1_Init(ctx->md_data);
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}
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static int
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test_sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count)
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{
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#ifdef TEST_ENG_OPENSSL_SHA_P_UPDATE
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	fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_update() called\n");
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#endif
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	return SHA1_Update(ctx->md_data, data, count);
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}
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static int
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test_sha1_final(EVP_MD_CTX *ctx, unsigned char *md)
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{
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#ifdef TEST_ENG_OPENSSL_SHA_P_FINAL
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	fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_final() called\n");
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#endif
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	return SHA1_Final(md, ctx->md_data);
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}
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static const EVP_MD test_sha_md = {
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	NID_sha1,
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	NID_sha1WithRSAEncryption,
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	SHA_DIGEST_LENGTH,
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	0,
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	test_sha1_init,
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	test_sha1_update,
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	test_sha1_final,
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	NULL,
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	NULL,
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	EVP_PKEY_RSA_method,
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	SHA_CBLOCK,
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	sizeof(EVP_MD *) + sizeof(SHA_CTX),
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};
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static int
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openssl_digests(ENGINE *e, const EVP_MD **digest, const int **nids, int nid)
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{
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	if (!digest) {
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		/* We are returning a list of supported nids */
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		*nids = test_digest_nids;
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		return test_digest_nids_number;
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	}
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	/* We are being asked for a specific digest */
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	if (nid == NID_sha1)
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		*digest = &test_sha_md;
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	else {
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#ifdef TEST_ENG_OPENSSL_SHA_OTHERS
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		fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) returning NULL for "
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		    "nid %d\n", nid);
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#endif
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		*digest = NULL;
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		return 0;
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	}
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	return 1;
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}
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#endif
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#ifdef TEST_ENG_OPENSSL_PKEY
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static EVP_PKEY *
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openssl_load_privkey(ENGINE *eng, const char *key_id, UI_METHOD *ui_method,
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    void *callback_data)
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{
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	BIO *in;
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	EVP_PKEY *key;
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	fprintf(stderr, "(TEST_ENG_OPENSSL_PKEY)Loading Private key %s\n",
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	    key_id);
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	in = BIO_new_file(key_id, "r");
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	if (!in)
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		return NULL;
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	key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL);
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	BIO_free(in);
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	return key;
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}
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#endif