* * 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 . * */ namespace OCA_Encryption; /** * This class provides basic operations to read/write encryption keys from/to the filesystem */ class Keymanager { # TODO: Try and get rid of username dependencies as these methods need to be used in a proxy class that doesn't have username access /** * @brief retrieve private key from a user * * @param string user name * @return string private key or false */ public static function getPrivateKey( $user ) { $view = new \OC_FilesystemView( '/' . $user . '/' . 'files_encryption' ); 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) { $view = new \OC_FilesystemView( '/public-keys/' ); 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) { $view = new \OC_FilesystemView('/'.$user.'/files_encryption/keyfiles/'); 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) { $view = new \OC_FilesystemView('/'.$user.'/files_encryption/'); 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) { $view = new \OC_FilesystemView('/public-keys/'); return $view->file_put_contents($user.'.public.key', $key); } /** * @brief store file encryption key * * @param string $userId name of the file owner * @param string $path relative path of the file, including filename * @param string $key * @return bool true/false */ public static function setFileKey( $userId, $path, $key ) { \OC_FileProxy::$enabled = false; $view = new \OC_FilesystemView( '/' . $userId . '/' . 'files_encryption' ); return $view->file_put_contents( '/' . $path . '.key', $key ); \OC_FileProxy::$enabled = true; } }