155714Skris/* p5_pbe.c */ 2280304Sjkim/* 3280304Sjkim * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project 4280304Sjkim * 1999. 555714Skris */ 655714Skris/* ==================================================================== 755714Skris * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 855714Skris * 955714Skris * Redistribution and use in source and binary forms, with or without 1055714Skris * modification, are permitted provided that the following conditions 1155714Skris * are met: 1255714Skris * 1355714Skris * 1. Redistributions of source code must retain the above copyright 14280304Sjkim * notice, this list of conditions and the following disclaimer. 1555714Skris * 1655714Skris * 2. Redistributions in binary form must reproduce the above copyright 1755714Skris * notice, this list of conditions and the following disclaimer in 1855714Skris * the documentation and/or other materials provided with the 1955714Skris * distribution. 2055714Skris * 2155714Skris * 3. All advertising materials mentioning features or use of this 2255714Skris * software must display the following acknowledgment: 2355714Skris * "This product includes software developed by the OpenSSL Project 2455714Skris * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 2555714Skris * 2655714Skris * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 2755714Skris * endorse or promote products derived from this software without 2855714Skris * prior written permission. For written permission, please contact 2955714Skris * licensing@OpenSSL.org. 3055714Skris * 3155714Skris * 5. Products derived from this software may not be called "OpenSSL" 3255714Skris * nor may "OpenSSL" appear in their names without prior written 3355714Skris * permission of the OpenSSL Project. 3455714Skris * 3555714Skris * 6. Redistributions of any form whatsoever must retain the following 3655714Skris * acknowledgment: 3755714Skris * "This product includes software developed by the OpenSSL Project 3855714Skris * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 3955714Skris * 4055714Skris * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 4155714Skris * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4255714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 4355714Skris * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 4455714Skris * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 4555714Skris * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 4655714Skris * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 4755714Skris * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 4955714Skris * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 5055714Skris * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 5155714Skris * OF THE POSSIBILITY OF SUCH DAMAGE. 5255714Skris * ==================================================================== 5355714Skris * 5455714Skris * This product includes cryptographic software written by Eric Young 5555714Skris * (eay@cryptsoft.com). This product includes software written by Tim 5655714Skris * Hudson (tjh@cryptsoft.com). 5755714Skris * 5855714Skris */ 5955714Skris 6055714Skris#include <stdio.h> 6155714Skris#include "cryptlib.h" 62109998Smarkm#include <openssl/asn1t.h> 6355714Skris#include <openssl/x509.h> 6455714Skris#include <openssl/rand.h> 6555714Skris 6655714Skris/* PKCS#5 password based encryption structure */ 6755714Skris 68109998SmarkmASN1_SEQUENCE(PBEPARAM) = { 69280304Sjkim ASN1_SIMPLE(PBEPARAM, salt, ASN1_OCTET_STRING), 70280304Sjkim ASN1_SIMPLE(PBEPARAM, iter, ASN1_INTEGER) 71109998Smarkm} ASN1_SEQUENCE_END(PBEPARAM) 7255714Skris 73109998SmarkmIMPLEMENT_ASN1_FUNCTIONS(PBEPARAM) 7455714Skris 75238405Sjkim/* Set an algorithm identifier for a PKCS#5 PBE algorithm */ 76238405Sjkim 77238405Sjkimint PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter, 78280304Sjkim const unsigned char *salt, int saltlen) 79280304Sjkim{ 80280304Sjkim PBEPARAM *pbe = NULL; 81280304Sjkim ASN1_STRING *pbe_str = NULL; 82280304Sjkim unsigned char *sstr; 8355714Skris 84280304Sjkim pbe = PBEPARAM_new(); 85280304Sjkim if (!pbe) { 86280304Sjkim ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR, ERR_R_MALLOC_FAILURE); 87280304Sjkim goto err; 88280304Sjkim } 89280304Sjkim if (iter <= 0) 90280304Sjkim iter = PKCS5_DEFAULT_ITER; 91280304Sjkim if (!ASN1_INTEGER_set(pbe->iter, iter)) { 92280304Sjkim ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR, ERR_R_MALLOC_FAILURE); 93280304Sjkim goto err; 94280304Sjkim } 95280304Sjkim if (!saltlen) 96280304Sjkim saltlen = PKCS5_SALT_LEN; 97280304Sjkim if (!ASN1_STRING_set(pbe->salt, NULL, saltlen)) { 98280304Sjkim ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR, ERR_R_MALLOC_FAILURE); 99280304Sjkim goto err; 100280304Sjkim } 101280304Sjkim sstr = ASN1_STRING_data(pbe->salt); 102280304Sjkim if (salt) 103280304Sjkim memcpy(sstr, salt, saltlen); 104306196Sjkim else if (RAND_bytes(sstr, saltlen) <= 0) 105280304Sjkim goto err; 10655714Skris 107280304Sjkim if (!ASN1_item_pack(pbe, ASN1_ITEM_rptr(PBEPARAM), &pbe_str)) { 108280304Sjkim ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR, ERR_R_MALLOC_FAILURE); 109280304Sjkim goto err; 110280304Sjkim } 11155714Skris 112280304Sjkim PBEPARAM_free(pbe); 113280304Sjkim pbe = NULL; 114238405Sjkim 115280304Sjkim if (X509_ALGOR_set0(algor, OBJ_nid2obj(alg), V_ASN1_SEQUENCE, pbe_str)) 116280304Sjkim return 1; 117238405Sjkim 118280304Sjkim err: 119280304Sjkim if (pbe != NULL) 120280304Sjkim PBEPARAM_free(pbe); 121280304Sjkim if (pbe_str != NULL) 122280304Sjkim ASN1_STRING_free(pbe_str); 123280304Sjkim return 0; 124280304Sjkim} 12555714Skris 126238405Sjkim/* Return an algorithm identifier for a PKCS#5 PBE algorithm */ 127238405Sjkim 128238405SjkimX509_ALGOR *PKCS5_pbe_set(int alg, int iter, 129280304Sjkim const unsigned char *salt, int saltlen) 130280304Sjkim{ 131280304Sjkim X509_ALGOR *ret; 132280304Sjkim ret = X509_ALGOR_new(); 133280304Sjkim if (!ret) { 134280304Sjkim ASN1err(ASN1_F_PKCS5_PBE_SET, ERR_R_MALLOC_FAILURE); 135280304Sjkim return NULL; 136280304Sjkim } 137238405Sjkim 138280304Sjkim if (PKCS5_pbe_set0_algor(ret, alg, iter, salt, saltlen)) 139280304Sjkim return ret; 140238405Sjkim 141280304Sjkim X509_ALGOR_free(ret); 142280304Sjkim return NULL; 143280304Sjkim} 144