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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* lib/crypto/openssl/des/string2key.c */
/*
* Copyright (C) 2009 by the Massachusetts Institute of Technology.
* All rights reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#include "crypto_int.h"
#include <openssl/des.h>
krb5_error_code
mit_des_string_to_key_int(krb5_keyblock *key, const krb5_data *pw,
const krb5_data *salt)
{
DES_cblock outkey;
char *str;
krb5_data s = (salt == NULL) ? empty_data() : *salt;
/* AFS string-to-key isn't implemented. */
if (s.length == SALT_TYPE_AFS_LENGTH)
return KRB5_CRYPTO_INTERNAL;
/* Concatenate password and salt. */
if (asprintf(&str, "%.*s%.*s", pw->length, pw->data, s.length, s.data) < 0)
return ENOMEM;
DES_string_to_key(str, &outkey);
free(str);
if (key->length < sizeof(outkey))
return KRB5_CRYPTO_INTERNAL;
key->length = sizeof(outkey);
memcpy(key->contents, outkey, key->length);
return 0;
}
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