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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright (C) 1998 by the FundsXpress, INC.
*
* 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 FundsXpress. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. FundsXpress makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include "k5-int.h"
#include "etypes.h"
krb5_error_code KRB5_CALLCONV
krb5_c_string_to_key_with_params(krb5_context context,
krb5_enctype enctype,
const krb5_data *string,
const krb5_data *salt,
const krb5_data *params,
krb5_keyblock *key);
krb5_error_code KRB5_CALLCONV
krb5_c_string_to_key(krb5_context context, krb5_enctype enctype,
const krb5_data *string, const krb5_data *salt,
krb5_keyblock *key)
{
return krb5_c_string_to_key_with_params(context, enctype, string, salt,
NULL, key);
}
krb5_error_code KRB5_CALLCONV
krb5_c_string_to_key_with_params(krb5_context context, krb5_enctype enctype,
const krb5_data *string,
const krb5_data *salt,
const krb5_data *params, krb5_keyblock *key)
{
krb5_error_code ret;
const struct krb5_keytypes *ktp;
size_t keylength;
ktp = find_enctype(enctype);
if (ktp == NULL)
return KRB5_BAD_ENCTYPE;
keylength = ktp->enc->keylength;
/*
* xxx AFS string2key function is indicated by a special length in
* the salt in much of the code. However only the DES enctypes can
* deal with this. Using s2kparams would be a much better solution.
*/
if (salt && salt->length == SALT_TYPE_AFS_LENGTH) {
switch (enctype) {
case ENCTYPE_DES_CBC_CRC:
case ENCTYPE_DES_CBC_MD4:
case ENCTYPE_DES_CBC_MD5:
break;
default:
return KRB5_CRYPTO_INTERNAL;
}
}
key->contents = malloc(keylength);
if (key->contents == NULL)
return ENOMEM;
key->magic = KV5M_KEYBLOCK;
key->enctype = enctype;
key->length = keylength;
ret = (*ktp->str2key)(ktp, string, salt, params, key);
if (ret) {
zapfree(key->contents, keylength);
key->length = 0;
key->contents = NULL;
}
return ret;
}
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