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/*
Unix SMB/CIFS implementation.
Samba KDB plugin for MIT Kerberos
Copyright (c) 2010 Simo Sorce <idra@samba.org>.
Copyright (c) 2014 Andreas Schneider <asn@samba.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "system/kerberos.h"
#include <profile.h>
#include <kdb.h>
#include "kdc/mit_samba.h"
#include "kdb_samba.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_KERBEROS
krb5_error_code kdb_samba_dbekd_decrypt_key_data(krb5_context context,
const krb5_keyblock *mkey,
const krb5_key_data *key_data,
krb5_keyblock *kkey,
krb5_keysalt *keysalt)
{
/*
* NOTE: Samba doesn't use a master key, so we will just copy
* the contents around untouched.
*/
ZERO_STRUCTP(kkey);
kkey->magic = KV5M_KEYBLOCK;
kkey->enctype = key_data->key_data_type[0];
kkey->contents = malloc(key_data->key_data_length[0]);
if (kkey->contents == NULL) {
return ENOMEM;
}
memcpy(kkey->contents,
key_data->key_data_contents[0],
key_data->key_data_length[0]);
kkey->length = key_data->key_data_length[0];
if (keysalt != NULL) {
keysalt->type = key_data->key_data_type[1];
keysalt->data.data = malloc(key_data->key_data_length[1]);
if (keysalt->data.data == NULL) {
free(kkey->contents);
return ENOMEM;
}
memcpy(keysalt->data.data,
key_data->key_data_contents[1],
key_data->key_data_length[1]);
keysalt->data.length = key_data->key_data_length[1];
}
return 0;
}
krb5_error_code kdb_samba_dbekd_encrypt_key_data(krb5_context context,
const krb5_keyblock *mkey,
const krb5_keyblock *kkey,
const krb5_keysalt *keysalt,
int keyver,
krb5_key_data *key_data)
{
/*
* NOTE: samba doesn't use a master key, so we will just copy
* the contents around untouched.
*/
ZERO_STRUCTP(key_data);
key_data->key_data_ver = KRB5_KDB_V1_KEY_DATA_ARRAY;
key_data->key_data_kvno = keyver;
key_data->key_data_type[0] = kkey->enctype;
key_data->key_data_contents[0] = malloc(kkey->length);
if (key_data->key_data_contents[0] == NULL) {
return ENOMEM;
}
memcpy(key_data->key_data_contents[0],
kkey->contents,
kkey->length);
key_data->key_data_length[0] = kkey->length;
if (keysalt != NULL) {
key_data->key_data_type[1] = keysalt->type;
key_data->key_data_contents[1] = malloc(keysalt->data.length);
if (key_data->key_data_contents[1] == NULL) {
free(key_data->key_data_contents[0]);
return ENOMEM;
}
memcpy(key_data->key_data_contents[1],
keysalt->data.data,
keysalt->data.length);
key_data->key_data_length[1] = keysalt->data.length;
}
return 0;
}
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