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187 lines
5.2 KiB
C
187 lines
5.2 KiB
C
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/* $OpenBSD: p5_pbe.c,v 1.22 2017/01/29 17:49:22 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 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 <stdlib.h>
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#include <string.h>
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#include <openssl/asn1t.h>
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#include <openssl/err.h>
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#include <openssl/x509.h>
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/* PKCS#5 password based encryption structure */
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static const ASN1_TEMPLATE PBEPARAM_seq_tt[] = {
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{
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.offset = offsetof(PBEPARAM, salt),
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.field_name = "salt",
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.item = &ASN1_OCTET_STRING_it,
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},
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{
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.offset = offsetof(PBEPARAM, iter),
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.field_name = "iter",
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.item = &ASN1_INTEGER_it,
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},
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};
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const ASN1_ITEM PBEPARAM_it = {
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.itype = ASN1_ITYPE_SEQUENCE,
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.utype = V_ASN1_SEQUENCE,
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.templates = PBEPARAM_seq_tt,
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.tcount = sizeof(PBEPARAM_seq_tt) / sizeof(ASN1_TEMPLATE),
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.size = sizeof(PBEPARAM),
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.sname = "PBEPARAM",
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};
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PBEPARAM *
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d2i_PBEPARAM(PBEPARAM **a, const unsigned char **in, long len)
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{
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return (PBEPARAM *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
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&PBEPARAM_it);
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}
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int
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i2d_PBEPARAM(PBEPARAM *a, unsigned char **out)
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{
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return ASN1_item_i2d((ASN1_VALUE *)a, out, &PBEPARAM_it);
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}
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PBEPARAM *
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PBEPARAM_new(void)
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{
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return (PBEPARAM *)ASN1_item_new(&PBEPARAM_it);
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}
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void
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PBEPARAM_free(PBEPARAM *a)
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{
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ASN1_item_free((ASN1_VALUE *)a, &PBEPARAM_it);
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}
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/* Set an algorithm identifier for a PKCS#5 PBE algorithm */
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int
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PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter,
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const unsigned char *salt, int saltlen)
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{
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PBEPARAM *pbe = NULL;
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ASN1_STRING *pbe_str = NULL;
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unsigned char *sstr;
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pbe = PBEPARAM_new();
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if (!pbe) {
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ASN1error(ERR_R_MALLOC_FAILURE);
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goto err;
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}
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if (iter <= 0)
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iter = PKCS5_DEFAULT_ITER;
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if (!ASN1_INTEGER_set(pbe->iter, iter)) {
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ASN1error(ERR_R_MALLOC_FAILURE);
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goto err;
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}
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if (!saltlen)
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saltlen = PKCS5_SALT_LEN;
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if (!ASN1_STRING_set(pbe->salt, NULL, saltlen)) {
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ASN1error(ERR_R_MALLOC_FAILURE);
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goto err;
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}
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sstr = ASN1_STRING_data(pbe->salt);
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if (salt)
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memcpy(sstr, salt, saltlen);
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else
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arc4random_buf(sstr, saltlen);
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if (!ASN1_item_pack(pbe, &PBEPARAM_it, &pbe_str)) {
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ASN1error(ERR_R_MALLOC_FAILURE);
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goto err;
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}
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PBEPARAM_free(pbe);
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pbe = NULL;
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if (X509_ALGOR_set0(algor, OBJ_nid2obj(alg), V_ASN1_SEQUENCE, pbe_str))
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return 1;
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err:
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if (pbe != NULL)
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PBEPARAM_free(pbe);
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ASN1_STRING_free(pbe_str);
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return 0;
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}
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/* Return an algorithm identifier for a PKCS#5 PBE algorithm */
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X509_ALGOR *
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PKCS5_pbe_set(int alg, int iter, const unsigned char *salt, int saltlen)
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{
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X509_ALGOR *ret;
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ret = X509_ALGOR_new();
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if (!ret) {
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ASN1error(ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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if (PKCS5_pbe_set0_algor(ret, alg, iter, salt, saltlen))
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return ret;
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X509_ALGOR_free(ret);
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return NULL;
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}
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