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/*
* 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)
{
int i;
krb5_error_code ret;
const struct krb5_enc_provider *enc;
size_t keybytes, keylength;
for (i=0; i<krb5_enctypes_length; i++) {
if (krb5_enctypes_list[i].etype == enctype)
break;
}
if (i == krb5_enctypes_length)
return(KRB5_BAD_ENCTYPE);
enc = krb5_enctypes_list[i].enc;
/* 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);
}
}
keybytes = enc->keybytes;
keylength = enc->keylength;
if ((key->contents = (krb5_octet *) malloc(keylength)) == NULL)
return(ENOMEM);
key->magic = KV5M_KEYBLOCK;
key->enctype = enctype;
key->length = keylength;
ret = (*krb5_enctypes_list[i].str2key)(enc, string, salt, params, key);
if (ret) {
memset(key->contents, 0, keylength);
free(key->contents);
}
return(ret);
}
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