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die_coolen_jungs
our_own_cloud_project
Commits
6d1ed388
Commit
6d1ed388
authored
12 years ago
by
Björn Schießle
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keymanager class for basic operations to store and retrieve keys
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d766ca8b
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apps/files_encryption/lib/keymanager.php
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apps/files_encryption/lib/keymanager.php
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6d1ed388
<?php
/**
* ownCloud
*
* @author Bjoern Schiessle
* @copyright 2012 Bjoern Schiessle <schiessle@owncloud.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace
OCA_Encryption
;
/*
* This class provides basic operations to read/write encryption keys from/to the filesystem
*/
class
Keymanager
{
/*
* @brief retrieve private key from a user
*
* @param string user name
* @return string private key or false
*/
public
static
function
getPrivateKey
(
$user
)
{
$privateKeyStorage
=
\OCP\Config
::
getSystemValue
(
'datadirectory'
)
.
'/'
.
$user
.
'/files_encryption/'
;
$view
=
new
\OC_FilesystemView
(
$privateKeyStorage
);
return
$view
->
file_get_contents
(
$user
.
'.private.key'
);
}
/*
* @brief retrieve public key from a user
*
* @param string user name
* @return string private key or false
*/
public
static
function
getPublicKey
(
$user
)
{
$publicKeyStorage
=
\OCP\Config
::
getSystemValue
(
'datadirectory'
)
.
'/public-keys/'
;
$view
=
$view
=
new
\OC_FilesystemView
(
$publicKeyStorage
);
return
$view
->
file_get_contents
(
$user
.
'.public.key'
);
}
/*
* @brief retrieve file encryption key
*
* @param string file name
* @param string user name of the file owner
* @return string file key or false
*/
public
static
function
getFileKey
(
$user
,
$file
)
{
$fileKeyStorage
=
\OCP\Config
::
getSystemValue
(
'datadirectory'
)
.
'/'
.
$user
.
'/files_encryption/keyfiles/'
;
$view
=
new
\OC_FilesystemView
(
$fileKeyStorage
);
return
$view
->
file_get_contents
(
$file
.
'.key'
);
}
/*
* @brief store private key from a user
*
* @param string user name
* @param string key
* @return bool true/false
*/
public
static
function
setPrivateKey
(
$user
,
$key
)
{
$privateKeyStorage
=
\OCP\Config
::
getSystemValue
(
'datadirectory'
)
.
'/'
.
$user
.
'/files_encryption/'
;
$view
=
new
\OC_FilesystemView
(
$privateKeyStorage
);
return
$view
->
file_put_contents
(
$user
.
'.private.key'
,
$key
);
}
/*
* @brief store public key from a user
*
* @param string user name
* @param string key
* @return bool true/false
*/
public
static
function
setPublicKey
(
$user
,
$key
)
{
$publicKeyStorage
=
\OCP\Config
::
getSystemValue
(
'datadirectory'
)
.
'/public-keys/'
;
$view
=
new
\OC_FilesystemView
(
$publicKeyStorage
);
return
$view
->
file_put_contents
(
$user
.
'.public.key'
,
$key
);
}
/*
* @brief store file encryption key
*
* @param string user name of the file owner
* @param string file name
* @param string key
* @return bool true/false
*/
public
static
function
setFileKey
(
$user
,
$file
,
$key
)
{
$fileKeyStorage
=
\OCP\Config
::
getSystemValue
(
'datadirectory'
)
.
'/'
.
$user
.
'/files_encryption/keyfiles/'
;
$view
=
new
\OC_FilesystemView
(
$fileKeyStorage
);
return
$view
->
file_put_contents
(
$file
.
'.key'
,
$key
);
}
}
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