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26a3a48d65
like Malloc, Realloc and especially Free conflict with already existing names on some operating systems or other packages. That is reason enough to change the names of the OpenSSL memory allocation macros to something that has a better chance of being unique, like prepending them with OPENSSL_. This change includes all the name changes needed throughout all C files.
283 lines
8.4 KiB
C
283 lines
8.4 KiB
C
/* p5_pbev2.c */
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/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
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* project 1999.
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*/
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/* ====================================================================
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* Copyright (c) 1999 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 "cryptlib.h"
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#include <openssl/asn1_mac.h>
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#include <openssl/x509.h>
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#include <openssl/rand.h>
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/* PKCS#5 v2.0 password based encryption structures */
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int i2d_PBE2PARAM(PBE2PARAM *a, unsigned char **pp)
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{
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M_ASN1_I2D_vars(a);
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M_ASN1_I2D_len (a->keyfunc, i2d_X509_ALGOR);
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M_ASN1_I2D_len (a->encryption, i2d_X509_ALGOR);
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M_ASN1_I2D_seq_total ();
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M_ASN1_I2D_put (a->keyfunc, i2d_X509_ALGOR);
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M_ASN1_I2D_put (a->encryption, i2d_X509_ALGOR);
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M_ASN1_I2D_finish();
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}
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PBE2PARAM *PBE2PARAM_new(void)
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{
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PBE2PARAM *ret=NULL;
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ASN1_CTX c;
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M_ASN1_New_Malloc(ret, PBE2PARAM);
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M_ASN1_New(ret->keyfunc,X509_ALGOR_new);
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M_ASN1_New(ret->encryption,X509_ALGOR_new);
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return (ret);
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M_ASN1_New_Error(ASN1_F_PBE2PARAM_NEW);
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}
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PBE2PARAM *d2i_PBE2PARAM(PBE2PARAM **a, unsigned char **pp, long length)
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{
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M_ASN1_D2I_vars(a,PBE2PARAM *,PBE2PARAM_new);
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M_ASN1_D2I_Init();
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M_ASN1_D2I_start_sequence();
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M_ASN1_D2I_get (ret->keyfunc, d2i_X509_ALGOR);
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M_ASN1_D2I_get (ret->encryption, d2i_X509_ALGOR);
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M_ASN1_D2I_Finish(a, PBE2PARAM_free, ASN1_F_D2I_PBE2PARAM);
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}
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void PBE2PARAM_free (PBE2PARAM *a)
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{
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if(a==NULL) return;
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X509_ALGOR_free(a->keyfunc);
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X509_ALGOR_free(a->encryption);
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OPENSSL_free (a);
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}
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int i2d_PBKDF2PARAM(PBKDF2PARAM *a, unsigned char **pp)
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{
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M_ASN1_I2D_vars(a);
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M_ASN1_I2D_len (a->salt, i2d_ASN1_TYPE);
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M_ASN1_I2D_len (a->iter, i2d_ASN1_INTEGER);
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M_ASN1_I2D_len (a->keylength, i2d_ASN1_INTEGER);
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M_ASN1_I2D_len (a->prf, i2d_X509_ALGOR);
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M_ASN1_I2D_seq_total ();
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M_ASN1_I2D_put (a->salt, i2d_ASN1_TYPE);
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M_ASN1_I2D_put (a->iter, i2d_ASN1_INTEGER);
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M_ASN1_I2D_put (a->keylength, i2d_ASN1_INTEGER);
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M_ASN1_I2D_put (a->prf, i2d_X509_ALGOR);
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M_ASN1_I2D_finish();
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}
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PBKDF2PARAM *PBKDF2PARAM_new(void)
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{
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PBKDF2PARAM *ret=NULL;
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ASN1_CTX c;
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M_ASN1_New_Malloc(ret, PBKDF2PARAM);
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M_ASN1_New(ret->salt, ASN1_TYPE_new);
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M_ASN1_New(ret->iter, M_ASN1_INTEGER_new);
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ret->keylength = NULL;
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ret->prf = NULL;
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return (ret);
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M_ASN1_New_Error(ASN1_F_PBKDF2PARAM_NEW);
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}
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PBKDF2PARAM *d2i_PBKDF2PARAM(PBKDF2PARAM **a, unsigned char **pp,
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long length)
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{
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M_ASN1_D2I_vars(a,PBKDF2PARAM *,PBKDF2PARAM_new);
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M_ASN1_D2I_Init();
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M_ASN1_D2I_start_sequence();
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M_ASN1_D2I_get (ret->salt, d2i_ASN1_TYPE);
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M_ASN1_D2I_get (ret->iter, d2i_ASN1_INTEGER);
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M_ASN1_D2I_get_opt (ret->keylength, d2i_ASN1_INTEGER, V_ASN1_INTEGER);
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M_ASN1_D2I_get_opt (ret->prf, d2i_X509_ALGOR, V_ASN1_SEQUENCE);
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M_ASN1_D2I_Finish(a, PBKDF2PARAM_free, ASN1_F_D2I_PBKDF2PARAM);
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}
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void PBKDF2PARAM_free (PBKDF2PARAM *a)
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{
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if(a==NULL) return;
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ASN1_TYPE_free(a->salt);
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M_ASN1_INTEGER_free(a->iter);
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M_ASN1_INTEGER_free(a->keylength);
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X509_ALGOR_free(a->prf);
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OPENSSL_free (a);
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}
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/* Return an algorithm identifier for a PKCS#5 v2.0 PBE algorithm:
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* yes I know this is horrible!
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*/
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X509_ALGOR *PKCS5_pbe2_set(const EVP_CIPHER *cipher, int iter,
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unsigned char *salt, int saltlen)
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{
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X509_ALGOR *scheme = NULL, *kalg = NULL, *ret = NULL;
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int alg_nid;
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EVP_CIPHER_CTX ctx;
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unsigned char iv[EVP_MAX_IV_LENGTH];
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PBKDF2PARAM *kdf = NULL;
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PBE2PARAM *pbe2 = NULL;
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ASN1_OCTET_STRING *osalt = NULL;
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ASN1_OBJECT *obj;
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alg_nid = EVP_CIPHER_type(cipher);
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if(alg_nid == NID_undef) {
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ASN1err(ASN1_F_PKCS5_PBE2_SET,
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ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
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goto err;
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}
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obj = OBJ_nid2obj(alg_nid);
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if(!(pbe2 = PBE2PARAM_new())) goto merr;
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/* Setup the AlgorithmIdentifier for the encryption scheme */
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scheme = pbe2->encryption;
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scheme->algorithm = obj;
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if(!(scheme->parameter = ASN1_TYPE_new())) goto merr;
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/* Create random IV */
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if (RAND_pseudo_bytes(iv, EVP_CIPHER_iv_length(cipher)) < 0)
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goto err;
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/* Dummy cipherinit to just setup the IV */
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EVP_CipherInit(&ctx, cipher, NULL, iv, 0);
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if(EVP_CIPHER_param_to_asn1(&ctx, scheme->parameter) < 0) {
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ASN1err(ASN1_F_PKCS5_PBE2_SET,
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ASN1_R_ERROR_SETTING_CIPHER_PARAMS);
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goto err;
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}
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EVP_CIPHER_CTX_cleanup(&ctx);
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if(!(kdf = PBKDF2PARAM_new())) goto merr;
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if(!(osalt = M_ASN1_OCTET_STRING_new())) goto merr;
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if (!saltlen) saltlen = PKCS5_SALT_LEN;
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if (!(osalt->data = OPENSSL_malloc (saltlen))) goto merr;
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osalt->length = saltlen;
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if (salt) memcpy (osalt->data, salt, saltlen);
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else if (RAND_pseudo_bytes (osalt->data, saltlen) < 0) goto merr;
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if(iter <= 0) iter = PKCS5_DEFAULT_ITER;
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if(!ASN1_INTEGER_set(kdf->iter, iter)) goto merr;
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/* Now include salt in kdf structure */
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kdf->salt->value.octet_string = osalt;
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kdf->salt->type = V_ASN1_OCTET_STRING;
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osalt = NULL;
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/* If its RC2 then we'd better setup the key length */
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if(alg_nid == NID_rc2_cbc) {
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if(!(kdf->keylength = M_ASN1_INTEGER_new())) goto merr;
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if(!ASN1_INTEGER_set (kdf->keylength,
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EVP_CIPHER_key_length(cipher))) goto merr;
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}
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/* prf can stay NULL because we are using hmacWithSHA1 */
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/* Now setup the PBE2PARAM keyfunc structure */
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pbe2->keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2);
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/* Encode PBKDF2PARAM into parameter of pbe2 */
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if(!(pbe2->keyfunc->parameter = ASN1_TYPE_new())) goto merr;
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if(!ASN1_pack_string(kdf, i2d_PBKDF2PARAM,
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&pbe2->keyfunc->parameter->value.sequence)) goto merr;
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pbe2->keyfunc->parameter->type = V_ASN1_SEQUENCE;
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PBKDF2PARAM_free(kdf);
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kdf = NULL;
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/* Now set up top level AlgorithmIdentifier */
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if(!(ret = X509_ALGOR_new())) goto merr;
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if(!(ret->parameter = ASN1_TYPE_new())) goto merr;
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ret->algorithm = OBJ_nid2obj(NID_pbes2);
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/* Encode PBE2PARAM into parameter */
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if(!ASN1_pack_string(pbe2, i2d_PBE2PARAM,
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&ret->parameter->value.sequence)) goto merr;
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ret->parameter->type = V_ASN1_SEQUENCE;
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PBE2PARAM_free(pbe2);
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pbe2 = NULL;
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return ret;
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merr:
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ASN1err(ASN1_F_PKCS5_PBE2_SET,ERR_R_MALLOC_FAILURE);
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err:
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PBE2PARAM_free(pbe2);
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/* Note 'scheme' is freed as part of pbe2 */
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M_ASN1_OCTET_STRING_free(osalt);
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PBKDF2PARAM_free(kdf);
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X509_ALGOR_free(kalg);
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X509_ALGOR_free(ret);
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return NULL;
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}
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