p5_pbe.c revision 55714
155714Skris/* p5_pbe.c */ 255714Skris/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL 355714Skris * project 1999. 455714Skris */ 555714Skris/* ==================================================================== 655714Skris * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 755714Skris * 855714Skris * Redistribution and use in source and binary forms, with or without 955714Skris * modification, are permitted provided that the following conditions 1055714Skris * are met: 1155714Skris * 1255714Skris * 1. Redistributions of source code must retain the above copyright 1355714Skris * notice, this list of conditions and the following disclaimer. 1455714Skris * 1555714Skris * 2. Redistributions in binary form must reproduce the above copyright 1655714Skris * notice, this list of conditions and the following disclaimer in 1755714Skris * the documentation and/or other materials provided with the 1855714Skris * distribution. 1955714Skris * 2055714Skris * 3. All advertising materials mentioning features or use of this 2155714Skris * software must display the following acknowledgment: 2255714Skris * "This product includes software developed by the OpenSSL Project 2355714Skris * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 2455714Skris * 2555714Skris * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 2655714Skris * endorse or promote products derived from this software without 2755714Skris * prior written permission. For written permission, please contact 2855714Skris * licensing@OpenSSL.org. 2955714Skris * 3055714Skris * 5. Products derived from this software may not be called "OpenSSL" 3155714Skris * nor may "OpenSSL" appear in their names without prior written 3255714Skris * permission of the OpenSSL Project. 3355714Skris * 3455714Skris * 6. Redistributions of any form whatsoever must retain the following 3555714Skris * acknowledgment: 3655714Skris * "This product includes software developed by the OpenSSL Project 3755714Skris * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 3855714Skris * 3955714Skris * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 4055714Skris * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4155714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 4255714Skris * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 4355714Skris * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 4455714Skris * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 4555714Skris * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 4655714Skris * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4755714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 4855714Skris * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 4955714Skris * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 5055714Skris * OF THE POSSIBILITY OF SUCH DAMAGE. 5155714Skris * ==================================================================== 5255714Skris * 5355714Skris * This product includes cryptographic software written by Eric Young 5455714Skris * (eay@cryptsoft.com). This product includes software written by Tim 5555714Skris * Hudson (tjh@cryptsoft.com). 5655714Skris * 5755714Skris */ 5855714Skris 5955714Skris#include <stdio.h> 6055714Skris#include "cryptlib.h" 6155714Skris#include <openssl/asn1_mac.h> 6255714Skris#include <openssl/x509.h> 6355714Skris#include <openssl/rand.h> 6455714Skris 6555714Skris/* PKCS#5 password based encryption structure */ 6655714Skris 6755714Skrisint i2d_PBEPARAM(PBEPARAM *a, unsigned char **pp) 6855714Skris{ 6955714Skris M_ASN1_I2D_vars(a); 7055714Skris M_ASN1_I2D_len (a->salt, i2d_ASN1_OCTET_STRING); 7155714Skris M_ASN1_I2D_len (a->iter, i2d_ASN1_INTEGER); 7255714Skris 7355714Skris M_ASN1_I2D_seq_total (); 7455714Skris 7555714Skris M_ASN1_I2D_put (a->salt, i2d_ASN1_OCTET_STRING); 7655714Skris M_ASN1_I2D_put (a->iter, i2d_ASN1_INTEGER); 7755714Skris M_ASN1_I2D_finish(); 7855714Skris} 7955714Skris 8055714SkrisPBEPARAM *PBEPARAM_new(void) 8155714Skris{ 8255714Skris PBEPARAM *ret=NULL; 8355714Skris ASN1_CTX c; 8455714Skris M_ASN1_New_Malloc(ret, PBEPARAM); 8555714Skris M_ASN1_New(ret->iter,ASN1_INTEGER_new); 8655714Skris M_ASN1_New(ret->salt,ASN1_OCTET_STRING_new); 8755714Skris return (ret); 8855714Skris M_ASN1_New_Error(ASN1_F_PBEPARAM_NEW); 8955714Skris} 9055714Skris 9155714SkrisPBEPARAM *d2i_PBEPARAM(PBEPARAM **a, unsigned char **pp, long length) 9255714Skris{ 9355714Skris M_ASN1_D2I_vars(a,PBEPARAM *,PBEPARAM_new); 9455714Skris M_ASN1_D2I_Init(); 9555714Skris M_ASN1_D2I_start_sequence(); 9655714Skris M_ASN1_D2I_get (ret->salt, d2i_ASN1_OCTET_STRING); 9755714Skris M_ASN1_D2I_get (ret->iter, d2i_ASN1_INTEGER); 9855714Skris M_ASN1_D2I_Finish(a, PBEPARAM_free, ASN1_F_D2I_PBEPARAM); 9955714Skris} 10055714Skris 10155714Skrisvoid PBEPARAM_free (PBEPARAM *a) 10255714Skris{ 10355714Skris if(a==NULL) return; 10455714Skris ASN1_OCTET_STRING_free(a->salt); 10555714Skris ASN1_INTEGER_free (a->iter); 10655714Skris Free ((char *)a); 10755714Skris} 10855714Skris 10955714Skris/* Return an algorithm identifier for a PKCS#5 PBE algorithm */ 11055714Skris 11155714SkrisX509_ALGOR *PKCS5_pbe_set(int alg, int iter, unsigned char *salt, 11255714Skris int saltlen) 11355714Skris{ 11455714Skris PBEPARAM *pbe; 11555714Skris ASN1_OBJECT *al; 11655714Skris X509_ALGOR *algor; 11755714Skris ASN1_TYPE *astype; 11855714Skris 11955714Skris if (!(pbe = PBEPARAM_new ())) { 12055714Skris ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE); 12155714Skris return NULL; 12255714Skris } 12355714Skris if(iter <= 0) iter = PKCS5_DEFAULT_ITER; 12455714Skris ASN1_INTEGER_set (pbe->iter, iter); 12555714Skris if (!saltlen) saltlen = PKCS5_SALT_LEN; 12655714Skris if (!(pbe->salt->data = Malloc (saltlen))) { 12755714Skris ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE); 12855714Skris return NULL; 12955714Skris } 13055714Skris pbe->salt->length = saltlen; 13155714Skris if (salt) memcpy (pbe->salt->data, salt, saltlen); 13255714Skris else RAND_bytes (pbe->salt->data, saltlen); 13355714Skris 13455714Skris if (!(astype = ASN1_TYPE_new())) { 13555714Skris ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE); 13655714Skris return NULL; 13755714Skris } 13855714Skris 13955714Skris astype->type = V_ASN1_SEQUENCE; 14055714Skris if(!ASN1_pack_string(pbe, i2d_PBEPARAM, &astype->value.sequence)) { 14155714Skris ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE); 14255714Skris return NULL; 14355714Skris } 14455714Skris PBEPARAM_free (pbe); 14555714Skris 14655714Skris al = OBJ_nid2obj(alg); /* never need to free al */ 14755714Skris if (!(algor = X509_ALGOR_new())) { 14855714Skris ASN1err(ASN1_F_ASN1_PBE_SET,ERR_R_MALLOC_FAILURE); 14955714Skris return NULL; 15055714Skris } 15155714Skris ASN1_OBJECT_free(algor->algorithm); 15255714Skris algor->algorithm = al; 15355714Skris algor->parameter = astype; 15455714Skris 15555714Skris return (algor); 15655714Skris} 157