GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/evp/evp_pbe.c Lines: 46 93 49.5 %
Date: 2017-11-07 Branches: 22 50 44.0 %

Line Branch Exec Source
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/* $OpenBSD: evp_pbe.c,v 1.25 2017/01/29 17:49:23 beck Exp $ */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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 * project 1999.
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 */
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/* ====================================================================
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 * Copyright (c) 1999-2006 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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#include <stdio.h>
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#include <string.h>
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#include <openssl/opensslconf.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/pkcs12.h>
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#include <openssl/x509.h>
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#include "evp_locl.h"
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/* Password based encryption (PBE) functions */
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DECLARE_STACK_OF(EVP_PBE_CTL)
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static STACK_OF(EVP_PBE_CTL) *pbe_algs;
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/* Setup a cipher context from a PBE algorithm */
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typedef struct {
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	int pbe_type;
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	int pbe_nid;
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	int cipher_nid;
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	int md_nid;
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	EVP_PBE_KEYGEN *keygen;
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} EVP_PBE_CTL;
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static const EVP_PBE_CTL builtin_pbe[] = {
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	{EVP_PBE_TYPE_OUTER, NID_pbeWithMD2AndDES_CBC, NID_des_cbc, NID_md2, PKCS5_PBE_keyivgen},
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	{EVP_PBE_TYPE_OUTER, NID_pbeWithMD5AndDES_CBC, NID_des_cbc, NID_md5, PKCS5_PBE_keyivgen},
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	{EVP_PBE_TYPE_OUTER, NID_pbeWithSHA1AndRC2_CBC, NID_rc2_64_cbc, NID_sha1, PKCS5_PBE_keyivgen},
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#ifndef OPENSSL_NO_HMAC
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	{EVP_PBE_TYPE_OUTER, NID_id_pbkdf2, -1, -1, PKCS5_v2_PBKDF2_keyivgen},
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#endif
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	{EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And128BitRC4, NID_rc4, NID_sha1, PKCS12_PBE_keyivgen},
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	{EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And40BitRC4, NID_rc4_40, NID_sha1, PKCS12_PBE_keyivgen},
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	{EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And3_Key_TripleDES_CBC, NID_des_ede3_cbc, NID_sha1, PKCS12_PBE_keyivgen},
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	{EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And2_Key_TripleDES_CBC, NID_des_ede_cbc, NID_sha1, PKCS12_PBE_keyivgen},
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	{EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And128BitRC2_CBC, NID_rc2_cbc, NID_sha1, PKCS12_PBE_keyivgen},
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	{EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And40BitRC2_CBC, NID_rc2_40_cbc, NID_sha1, PKCS12_PBE_keyivgen},
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#ifndef OPENSSL_NO_HMAC
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	{EVP_PBE_TYPE_OUTER, NID_pbes2, -1, -1, PKCS5_v2_PBE_keyivgen},
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#endif
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	{EVP_PBE_TYPE_OUTER, NID_pbeWithMD2AndRC2_CBC, NID_rc2_64_cbc, NID_md2, PKCS5_PBE_keyivgen},
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	{EVP_PBE_TYPE_OUTER, NID_pbeWithMD5AndRC2_CBC, NID_rc2_64_cbc, NID_md5, PKCS5_PBE_keyivgen},
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	{EVP_PBE_TYPE_OUTER, NID_pbeWithSHA1AndDES_CBC, NID_des_cbc, NID_sha1, PKCS5_PBE_keyivgen},
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	{EVP_PBE_TYPE_PRF, NID_hmacWithSHA1, -1, NID_sha1, 0},
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	{EVP_PBE_TYPE_PRF, NID_hmacWithMD5, -1, NID_md5, 0},
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	{EVP_PBE_TYPE_PRF, NID_hmacWithSHA224, -1, NID_sha224, 0},
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	{EVP_PBE_TYPE_PRF, NID_hmacWithSHA256, -1, NID_sha256, 0},
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	{EVP_PBE_TYPE_PRF, NID_hmacWithSHA384, -1, NID_sha384, 0},
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	{EVP_PBE_TYPE_PRF, NID_hmacWithSHA512, -1, NID_sha512, 0},
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	{EVP_PBE_TYPE_PRF, NID_id_HMACGostR3411_94, -1, NID_id_GostR3411_94, 0},
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};
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int
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EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
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    ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de)
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{
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	const EVP_CIPHER *cipher;
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	const EVP_MD *md;
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	int cipher_nid, md_nid;
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	EVP_PBE_KEYGEN *keygen;
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	if (!EVP_PBE_find(EVP_PBE_TYPE_OUTER, OBJ_obj2nid(pbe_obj),
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	    &cipher_nid, &md_nid, &keygen)) {
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		char obj_tmp[80];
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		EVPerror(EVP_R_UNKNOWN_PBE_ALGORITHM);
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		if (!pbe_obj)
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			strlcpy(obj_tmp, "NULL", sizeof obj_tmp);
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		else
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			i2t_ASN1_OBJECT(obj_tmp, sizeof obj_tmp, pbe_obj);
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		ERR_asprintf_error_data("TYPE=%s", obj_tmp);
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		return 0;
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	}
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	if (!pass)
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		passlen = 0;
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	else if (passlen == -1)
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		passlen = strlen(pass);
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	if (cipher_nid == -1)
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		cipher = NULL;
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	else {
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		cipher = EVP_get_cipherbynid(cipher_nid);
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		if (!cipher) {
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			EVPerror(EVP_R_UNKNOWN_CIPHER);
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			return 0;
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		}
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	}
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	if (md_nid == -1)
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		md = NULL;
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	else {
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		md = EVP_get_digestbynid(md_nid);
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		if (!md) {
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			EVPerror(EVP_R_UNKNOWN_DIGEST);
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			return 0;
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		}
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	}
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	if (!keygen(ctx, pass, passlen, param, cipher, md, en_de)) {
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		EVPerror(EVP_R_KEYGEN_FAILURE);
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		return 0;
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	}
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	return 1;
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}
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static int pbe2_cmp_BSEARCH_CMP_FN(const void *, const void *);
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static int pbe2_cmp(EVP_PBE_CTL const *, EVP_PBE_CTL const *);
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static EVP_PBE_CTL *OBJ_bsearch_pbe2(EVP_PBE_CTL *key, EVP_PBE_CTL const *base, int num);
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static int
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pbe2_cmp(const EVP_PBE_CTL *pbe1, const EVP_PBE_CTL *pbe2)
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{
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	int ret = pbe1->pbe_type - pbe2->pbe_type;
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	if (ret)
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		return ret;
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	else
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		return pbe1->pbe_nid - pbe2->pbe_nid;
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}
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static int
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pbe2_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_)
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{
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	EVP_PBE_CTL const *a = a_;
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	EVP_PBE_CTL const *b = b_;
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	return pbe2_cmp(a, b);
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}
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static EVP_PBE_CTL *
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OBJ_bsearch_pbe2(EVP_PBE_CTL *key, EVP_PBE_CTL const *base, int num)
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{
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	return (EVP_PBE_CTL *)OBJ_bsearch_(key, base, num, sizeof(EVP_PBE_CTL),
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	    pbe2_cmp_BSEARCH_CMP_FN);
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}
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static int
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pbe_cmp(const EVP_PBE_CTL * const *a, const EVP_PBE_CTL * const *b)
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{
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	int ret = (*a)->pbe_type - (*b)->pbe_type;
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	if (ret)
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		return ret;
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	else
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		return (*a)->pbe_nid - (*b)->pbe_nid;
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}
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/* Add a PBE algorithm */
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int
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EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid, int md_nid,
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    EVP_PBE_KEYGEN *keygen)
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{
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	EVP_PBE_CTL *pbe_tmp;
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	if (pbe_algs == NULL) {
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		pbe_algs = sk_EVP_PBE_CTL_new(pbe_cmp);
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		if (pbe_algs == NULL) {
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			EVPerror(ERR_R_MALLOC_FAILURE);
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			return 0;
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		}
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	}
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	pbe_tmp = malloc(sizeof(EVP_PBE_CTL));
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	if (pbe_tmp == NULL) {
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		EVPerror(ERR_R_MALLOC_FAILURE);
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		return 0;
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	}
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	pbe_tmp->pbe_type = pbe_type;
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	pbe_tmp->pbe_nid = pbe_nid;
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	pbe_tmp->cipher_nid = cipher_nid;
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	pbe_tmp->md_nid = md_nid;
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	pbe_tmp->keygen = keygen;
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	if (sk_EVP_PBE_CTL_push(pbe_algs, pbe_tmp) == 0) {
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		free(pbe_tmp);
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		EVPerror(ERR_R_MALLOC_FAILURE);
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		return 0;
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	}
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	return 1;
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}
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int
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EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
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    EVP_PBE_KEYGEN *keygen)
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{
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	int cipher_nid, md_nid;
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	if (cipher)
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		cipher_nid = EVP_CIPHER_nid(cipher);
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	else
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		cipher_nid = -1;
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	if (md)
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		md_nid = EVP_MD_type(md);
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	else
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		md_nid = -1;
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	return EVP_PBE_alg_add_type(EVP_PBE_TYPE_OUTER, nid,
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	    cipher_nid, md_nid, keygen);
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}
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int
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EVP_PBE_find(int type, int pbe_nid,
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    int *pcnid, int *pmnid, EVP_PBE_KEYGEN **pkeygen)
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{
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	EVP_PBE_CTL *pbetmp = NULL, pbelu;
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	int i;
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	if (pbe_nid == NID_undef)
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		return 0;
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	pbelu.pbe_type = type;
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	pbelu.pbe_nid = pbe_nid;
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	if (pbe_algs) {
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		i = sk_EVP_PBE_CTL_find(pbe_algs, &pbelu);
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		if (i != -1)
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			pbetmp = sk_EVP_PBE_CTL_value (pbe_algs, i);
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	}
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	if (pbetmp == NULL) {
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		pbetmp = OBJ_bsearch_pbe2(&pbelu, builtin_pbe,
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		    sizeof(builtin_pbe)/sizeof(EVP_PBE_CTL));
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	}
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	if (pbetmp == NULL)
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		return 0;
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	if (pcnid)
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		*pcnid = pbetmp->cipher_nid;
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	if (pmnid)
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		*pmnid = pbetmp->md_nid;
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	if (pkeygen)
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		*pkeygen = pbetmp->keygen;
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	return 1;
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}
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static void
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free_evp_pbe_ctl(EVP_PBE_CTL *pbe)
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{
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	free(pbe);
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}
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void
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EVP_PBE_cleanup(void)
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{
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	sk_EVP_PBE_CTL_pop_free(pbe_algs, free_evp_pbe_ctl);
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	pbe_algs = NULL;
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}