Merge branch 'master' into migration_unit_tests

16 files changed, 553 insertions, 205 deletions

diff --git a/apps/files_encryption/appinfo/info.xml b/apps/files_encryption/appinfo/info.xml
index 9d495916d26..b6d9d6bb0a3 100644
--- a/apps/files_encryption/appinfo/info.xml
+++ b/apps/files_encryption/appinfo/info.xml
@@ -2,11 +2,15 @@
 <info>
 	<id>files_encryption</id>
 	<name>Encryption</name>
-	<description>The new ownCloud 5 files encryption system. After the app was enabled you need to re-login to initialize your encryption keys.</description>
+	<description>The ownCloud files encryption system provides server side-encryption. After the app was enabled you need to re-login to initialize your encryption keys.</description>
 	<licence>AGPL</licence>
 	<author>Sam Tuke, Bjoern Schiessle, Florin Peter</author>
 	<require>4</require>
 	<shipped>true</shipped>
+	<documentation>
+		<user>http://doc.owncloud.org/server/6.0/user_manual/files/encryption.html</user>
+		<admin>http://doc.owncloud.org/server/6.0/admin_manual/configuration/configuration_encryption.html</admin>
+	</documentation>
 	<rememberlogin>false</rememberlogin>
 	<types>
 		<filesystem/>
diff --git a/apps/files_encryption/hooks/hooks.php b/apps/files_encryption/hooks/hooks.php
index 09d5687e226..83abf3ba9de 100644
--- a/apps/files_encryption/hooks/hooks.php
+++ b/apps/files_encryption/hooks/hooks.php
@@ -32,6 +32,8 @@ class Hooks {
 

 	// file for which we want to rename the keys after the rename operation was successful

 	private static $renamedFiles = array();

+	// file for which we want to delete the keys after the delete operation was successful

+	private static $deleteFiles = array();

 

 	/**

 	 * @brief Startup encryption backend upon user login

@@ -78,8 +80,15 @@ class Hooks {
 

 		// Check if first-run file migration has already been performed

 		$ready = false;

-		if ($util->getMigrationStatus() === Util::MIGRATION_OPEN) {

+		$migrationStatus = $util->getMigrationStatus();

+		if ($migrationStatus === Util::MIGRATION_OPEN) {

 			$ready = $util->beginMigration();

+		} elseif ($migrationStatus === Util::MIGRATION_IN_PROGRESS) {

+			// refuse login as long as the initial encryption is running

+			while ($migrationStatus === Util::MIGRATION_IN_PROGRESS) {

+				sleep(60);

+				$migrationStatus = $util->getMigrationStatus();

+			}

 		}

 

 		// If migration not yet done

@@ -630,4 +639,66 @@ class Hooks {
 		}

 	}

 

+	/**

+	 * @brief if the file was really deleted we remove the encryption keys

+	 * @param array $params

+	 * @return boolean

+	 */

+	public static function postDelete($params) {

+

+		if (!isset(self::$deleteFiles[$params[\OC\Files\Filesystem::signal_param_path]])) {

+			return true;

+		}

+

+		$deletedFile = self::$deleteFiles[$params[\OC\Files\Filesystem::signal_param_path]];

+		$path = $deletedFile['path'];

+		$user = $deletedFile['uid'];

+

+		// we don't need to remember the file any longer

+		unset(self::$deleteFiles[$params[\OC\Files\Filesystem::signal_param_path]]);

+

+		$view = new \OC\Files\View('/');

+

+		// return if the file still exists and wasn't deleted correctly

+		if ($view->file_exists('/' . $user . '/files/' . $path)) {

+			return true;

+		}

+

+		// Disable encryption proxy to prevent recursive calls

+		$proxyStatus = \OC_FileProxy::$enabled;

+		\OC_FileProxy::$enabled = false;

+

+		// Delete keyfile & shareKey so it isn't orphaned

+		if (!Keymanager::deleteFileKey($view, $path, $user)) {

+			\OCP\Util::writeLog('Encryption library',

+				'Keyfile or shareKey could not be deleted for file "' . $user.'/files/'.$path . '"', \OCP\Util::ERROR);

+		}

+

+		Keymanager::delAllShareKeys($view, $user, $path);

+

+		\OC_FileProxy::$enabled = $proxyStatus;

+	}

+

+	/**

+	 * @brief remember the file which should be deleted and it's owner

+	 * @param array $params

+	 * @return boolean

+	 */

+	public static function preDelete($params) {

+		$path = $params[\OC\Files\Filesystem::signal_param_path];

+

+		// skip this method if the trash bin is enabled or if we delete a file

+		// outside of /data/user/files

+		if (\OCP\App::isEnabled('files_trashbin')) {

+			return true;

+		}

+

+		$util = new Util(new \OC_FilesystemView('/'), \OCP\USER::getUser());

+		list($owner, $ownerPath) = $util->getUidAndFilename($path);

+

+		self::$deleteFiles[$params[\OC\Files\Filesystem::signal_param_path]] = array(

+			'uid' => $owner,

+			'path' => $ownerPath);

+	}

+

 }

diff --git a/apps/files_encryption/l10n/id.php b/apps/files_encryption/l10n/id.php
index 32c348bd8ba..a719d445820 100644
--- a/apps/files_encryption/l10n/id.php
+++ b/apps/files_encryption/l10n/id.php
@@ -1,6 +1,41 @@
 <?php
 $TRANSLATIONS = array(
+"Recovery key successfully enabled" => "Kunci pemulihan berhasil diaktifkan",
+"Could not enable recovery key. Please check your recovery key password!" => "Tidak dapat mengaktifkan kunci pemulihan. Silakan periksa sandi kunci pemulihan Anda!",
+"Recovery key successfully disabled" => "Kunci pemulihan berhasil dinonaktifkan",
+"Could not disable recovery key. Please check your recovery key password!" => "Tidak dapat menonaktifkan kunci pemulihan. Silakan periksa sandi kunci pemulihan Anda!",
+"Password successfully changed." => "Sandi berhasil diubah",
+"Could not change the password. Maybe the old password was not correct." => "Tidak dapat mengubah sandi. Kemungkinan sandi lama yang dimasukkan salah.",
+"Private key password successfully updated." => "Sandi kunci privat berhasil diperbarui.",
+"Could not update the private key password. Maybe the old password was not correct." => "Tidak dapat memperbarui sandi kunci privat. Kemungkinan sandi lama yang Anda masukkan salah.",
+"Can not decrypt this file, probably this is a shared file. Please ask the file owner to reshare the file with you." => "Tidak dapat mendekripsi berkas ini, mungkin ini adalah berkas bersama. Silakan meminta pemilik berkas ini untuk membagikan kembali dengan Anda.",
+"Unknown error please check your system settings or contact your administrator" => "Kesalahan tak dikenal, silakan periksa pengaturan sistem Anda atau hubungi admin.",
+"Missing requirements." => "Persyaratan yang hilang.",
+"Following users are not set up for encryption:" => "Pengguna berikut belum diatur untuk enkripsi:",
+"Initial encryption started... This can take some time. Please wait." => "Inisial enskripsi dijalankan... Ini dapat memakan waktu. Silakan tunggu.",
 "Saving..." => "Menyimpan...",
-"Encryption" => "Enkripsi"
+"Go directly to your " => "Langsung ke anda",
+"personal settings" => "pengaturan pribadi",
+"Encryption" => "Enkripsi",
+"Enable recovery key (allow to recover users files in case of password loss):" => "Aktifkan kunci pemulihan (memungkinkan pengguna untuk memulihkan berkas dalam kasus kehilangan sandi):",
+"Recovery key password" => "Sandi kunci pemulihan",
+"Repeat Recovery key password" => "Ulangi sandi kunci Pemulihan",
+"Enabled" => "Diaktifkan",
+"Disabled" => "Dinonaktifkan",
+"Change recovery key password:" => "Ubah sandi kunci pemulihan:",
+"Old Recovery key password" => "Sandi kunci Pemulihan Lama",
+"New Recovery key password" => "Sandi kunci Pemulihan Baru",
+"Repeat New Recovery key password" => "Ulangi sandi kunci Pemulihan baru",
+"Change Password" => "Ubah sandi",
+"Your private key password no longer match your log-in password:" => "Sandi kunci privat Anda tidak lagi cocok dengan sandi masuk:",
+"Set your old private key password to your current log-in password." => "Atur sandi kunci privat lama Anda sebagai sandi masuk Anda saat ini.",
+" If you don't remember your old password you can ask your administrator to recover your files." => "Jika Anda tidak ingat sandi lama, Anda dapat meminta administrator Anda untuk memulihkan berkas.",
+"Old log-in password" => "Sandi masuk yang lama",
+"Current log-in password" => "Sandi masuk saat ini",
+"Update Private Key Password" => "Perbarui Sandi Kunci Privat",
+"Enable password recovery:" => "Aktifkan sandi pemulihan:",
+"Enabling this option will allow you to reobtain access to your encrypted files in case of password loss" => "Mengaktifkan opsi ini memungkinkan Anda untuk mendapatkan kembali akses ke berkas terenkripsi Anda dalam kasus kehilangan sandi",
+"File recovery settings updated" => "Pengaturan pemulihan berkas diperbarui",
+"Could not update file recovery" => "Tidak dapat memperbarui pemulihan berkas"
 );
 $PLURAL_FORMS = "nplurals=1; plural=0;";
diff --git a/apps/files_encryption/lib/helper.php b/apps/files_encryption/lib/helper.php
index 5dcb05fa196..bb06a57c714 100755
--- a/apps/files_encryption/lib/helper.php
+++ b/apps/files_encryption/lib/helper.php
@@ -63,6 +63,8 @@ class Helper {
 
 		\OCP\Util::connectHook('OC_Filesystem', 'rename', 'OCA\Encryption\Hooks', 'preRename');
 		\OCP\Util::connectHook('OC_Filesystem', 'post_rename', 'OCA\Encryption\Hooks', 'postRename');
+		\OCP\Util::connectHook('OC_Filesystem', 'post_delete', 'OCA\Encryption\Hooks', 'postDelete');
+		\OCP\Util::connectHook('OC_Filesystem', 'delete', 'OCA\Encryption\Hooks', 'preDelete');
 	}
 
 	/**
diff --git a/apps/files_encryption/lib/keymanager.php b/apps/files_encryption/lib/keymanager.php
index b2c756894b4..7abc565f609 100755
--- a/apps/files_encryption/lib/keymanager.php
+++ b/apps/files_encryption/lib/keymanager.php
@@ -214,15 +214,24 @@ class Keymanager {
 	 *
 	 * @param \OC_FilesystemView $view
 	 * @param string $path path of the file the key belongs to
+	 * @param string $userId the user to whom the file belongs
 	 * @return bool Outcome of unlink operation
 	 * @note $path must be relative to data/user/files. e.g. mydoc.txt NOT
 	 *       /data/admin/files/mydoc.txt
 	 */
-	public static function deleteFileKey(\OC_FilesystemView $view, $path) {
+	public static function deleteFileKey($view, $path, $userId=null) {
 
 		$trimmed = ltrim($path, '/');
 
-		$userId = Helper::getUser($path);
+		if ($trimmed === '') {
+			\OCP\Util::writeLog('Encryption library',
+				'Can\'t delete file-key empty path given!', \OCP\Util::ERROR);
+			return false;
+		}
+
+		if ($userId === null) {
+			$userId = Helper::getUser($path);
+		}
 		$util = new Util($view, $userId);
 
 		if($util->isSystemWideMountPoint($path)) {
@@ -402,7 +411,15 @@ class Keymanager {
 	 * @param string $userId owner of the file
 	 * @param string $filePath path to the file, relative to the owners file dir
 	 */
-	public static function delAllShareKeys(\OC_FilesystemView $view, $userId, $filePath) {
+	public static function delAllShareKeys($view, $userId, $filePath) {
+
+		$filePath = ltrim($filePath, '/');
+
+		if ($filePath === '') {
+			\OCP\Util::writeLog('Encryption library',
+					'Can\'t delete share-keys empty path given!', \OCP\Util::ERROR);
+			return false;
+		}
 
 		$util = new util($view, $userId);
 
@@ -413,17 +430,15 @@ class Keymanager {
 		}
 
 
-		if ($view->is_dir($userId . '/files/' . $filePath)) {
+		if ($view->is_dir($baseDir . $filePath)) {
 			$view->unlink($baseDir . $filePath);
 		} else {
-			$localKeyPath = $view->getLocalFile($baseDir . $filePath);
-			$escapedPath = Helper::escapeGlobPattern($localKeyPath);
-			$matches = glob($escapedPath . '*.shareKey');
-			foreach ($matches as $ma) {
-				$result = unlink($ma);
-				if (!$result) {
-					\OCP\Util::writeLog('Encryption library',
-						'Keyfile or shareKey could not be deleted for file "' . $filePath . '"', \OCP\Util::ERROR);
+			$parentDir = dirname($baseDir . $filePath);
+			$filename = pathinfo($filePath, PATHINFO_BASENAME);
+			foreach($view->getDirectoryContent($parentDir) as $content) {
+				$path = $content['path'];
+				if (self::getFilenameFromShareKey($content['name'])  === $filename) {
+					$view->unlink('/' . $userId . '/' . $path);
 				}
 			}
 		}
@@ -523,4 +538,20 @@ class Keymanager {
 		return $targetPath;
 
 	}
+
+	/**
+	 * @brief extract filename from share key name
+	 * @param string $shareKey (filename.userid.sharekey)
+	 * @return mixed filename or false
+	 */
+	protected static function getFilenameFromShareKey($shareKey) {
+		$parts = explode('.', $shareKey);
+
+		$filename = false;
+		if(count($parts) > 2) {
+			$filename = implode('.', array_slice($parts, 0, count($parts)-2));
+		}
+
+		return $filename;
+	}
 }
diff --git a/apps/files_encryption/lib/proxy.php b/apps/files_encryption/lib/proxy.php
index 41f352d853a..11048005969 100644
--- a/apps/files_encryption/lib/proxy.php
+++ b/apps/files_encryption/lib/proxy.php
@@ -37,6 +37,7 @@ namespace OCA\Encryption;
 class Proxy extends \OC_FileProxy {
 
 	private static $blackList = null; //mimetypes blacklisted from encryption
+	private static $unencryptedSizes = array(); // remember unencrypted size
 
 	/**
 	 * Check if a file requires encryption
@@ -114,14 +115,12 @@ class Proxy extends \OC_FileProxy {
 					// get encrypted content
 					$data = $view->file_get_contents($tmpPath);
 
-					// update file cache for target file
+					// store new unenecrypted size so that it can be updated
+					// in the post proxy
 					$tmpFileInfo = $view->getFileInfo($tmpPath);
-					$fileInfo = $view->getFileInfo($path);
-					if (is_array($fileInfo) && is_array($tmpFileInfo)) {
-						$fileInfo['encrypted'] = true;
-						$fileInfo['unencrypted_size'] = $tmpFileInfo['size'];
-						$view->putFileInfo($path, $fileInfo);
-						}
+					if ( isset($tmpFileInfo['size']) ) {
+						self::$unencryptedSizes[\OC_Filesystem::normalizePath($path)] = $tmpFileInfo['size'];
+					}
 
 					// remove our temp file
 					$view->deleteAll('/' . \OCP\User::getUser() . '/cache/' . $cacheFolder);
@@ -137,6 +136,24 @@ class Proxy extends \OC_FileProxy {
 	}
 
 	/**
+	 * @brief update file cache with the new unencrypted size after file was written
+	 * @param string $path
+	 * @param mixed $result
+	 * @return mixed
+	 */
+	public function postFile_put_contents($path, $result) {
+		$normalizedPath = \OC_Filesystem::normalizePath($path);
+		if ( isset(self::$unencryptedSizes[$normalizedPath]) ) {
+			$view = new \OC_FilesystemView('/');
+			$view->putFileInfo($normalizedPath,
+					array('encrypted' => true, 'encrypted_size' => self::$unencryptedSizes[$normalizedPath]));
+			unset(self::$unencryptedSizes[$normalizedPath]);
+		}
+
+		return $result;
+	}
+
+	/**
 	 * @param string $path Path of file from which has been read
 	 * @param string $data Data that has been read from file
 	 */
@@ -187,47 +204,6 @@ class Proxy extends \OC_FileProxy {
 	}
 
 	/**
-	 * @brief When a file is deleted, remove its keyfile also
-	 */
-	public function preUnlink($path) {
-
-		$relPath = Helper::stripUserFilesPath($path);
-
-		// skip this method if the trash bin is enabled or if we delete a file
-		// outside of /data/user/files
-		if (\OCP\App::isEnabled('files_trashbin') || $relPath === false) {
-			return true;
-		}
-
-		// Disable encryption proxy to prevent recursive calls
-		$proxyStatus = \OC_FileProxy::$enabled;
-		\OC_FileProxy::$enabled = false;
-
-		$view = new \OC_FilesystemView('/');
-
-		$userId = \OCP\USER::getUser();
-
-		$util = new Util($view, $userId);
-
-		list($owner, $ownerPath) = $util->getUidAndFilename($relPath);
-
-		// Delete keyfile & shareKey so it isn't orphaned
-		if (!Keymanager::deleteFileKey($view, $ownerPath)) {
-			\OCP\Util::writeLog('Encryption library',
-				'Keyfile or shareKey could not be deleted for file "' . $ownerPath . '"', \OCP\Util::ERROR);
-		}
-
-		Keymanager::delAllShareKeys($view, $owner, $ownerPath);
-
-		\OC_FileProxy::$enabled = $proxyStatus;
-
-		// If we don't return true then file delete will fail; better
-		// to leave orphaned keyfiles than to disallow file deletion
-		return true;
-
-	}
-
-	/**
 	 * @param $path
 	 * @return bool
 	 */
@@ -255,8 +231,8 @@ class Proxy extends \OC_FileProxy {
 		// split the path parts
 		$pathParts = explode('/', $path);
 
-		// FIXME: handling for /userId/cache used by webdav for chunking. The cache chunks are NOT encrypted
-		if (isset($pathParts[2]) && $pathParts[2] === 'cache') {
+		// don't try to encrypt/decrypt cache chunks or files in the trash bin
+		if (isset($pathParts[2]) && ($pathParts[2] === 'cache' || $pathParts[2] === 'files_trashbin')) {
 			return $result;
 		}
 
diff --git a/apps/files_encryption/lib/util.php b/apps/files_encryption/lib/util.php
index 8a5dfabeec1..ae3e2a2e15a 100644
--- a/apps/files_encryption/lib/util.php
+++ b/apps/files_encryption/lib/util.php
@@ -2,9 +2,10 @@
 /**
  * ownCloud
  *
- * @author Sam Tuke, Frank Karlitschek
+ * @author Sam Tuke, Frank Karlitschek, Bjoern Schiessle
  * @copyright 2012 Sam Tuke <samtuke@owncloud.com>,
- * Frank Karlitschek <frank@owncloud.org>
+ * Frank Karlitschek <frank@owncloud.org>,
+ * 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
@@ -56,7 +57,7 @@ class Util {
 	 * @param $userId
 	 * @param bool $client
 	 */
-	public function __construct(\OC_FilesystemView $view, $userId, $client = false) {
+	public function __construct($view, $userId, $client = false) {
 
 		$this->view = $view;
 		$this->client = $client;
@@ -1360,59 +1361,32 @@ class Util {
 		}
 	}
 
-
 	/**
 	 * @brief go recursively through a dir and collect all files and sub files.
 	 * @param string $dir relative to the users files folder
 	 * @return array with list of files relative to the users files folder
 	 */
 	public function getAllFiles($dir) {
-
 		$result = array();
+		$dirList = array($dir);
 
-		$content = $this->view->getDirectoryContent(\OC\Files\Filesystem::normalizePath(
-			$this->userFilesDir . '/' . $dir));
-
-		// handling for re shared folders
-		$pathSplit = explode('/', $dir);
-
-		foreach ($content as $c) {
-
-			$sharedPart = $pathSplit[sizeof($pathSplit) - 1];
-			$targetPathSplit = array_reverse(explode('/', $c['path']));
-
-			$path = '';
-
-			// rebuild path
-			foreach ($targetPathSplit as $pathPart) {
-
-				if ($pathPart !== $sharedPart) {
-
-					$path = '/' . $pathPart . $path;
+		while ($dirList) {
+			$dir = array_pop($dirList);
+			$content = $this->view->getDirectoryContent(\OC\Files\Filesystem::normalizePath(
+					$this->userFilesDir . '/' . $dir));
 
+			foreach ($content as $c) {
+				$usersPath = isset($c['usersPath']) ? $c['usersPath'] : $c['path'];
+				if ($c['type'] === 'dir') {
+					$dirList[] = substr($usersPath, strlen("files"));
 				} else {
-
-					break;
-
+					$result[] = substr($usersPath, strlen("files"));
 				}
-
 			}
 
-			$path = $dir . $path;
-
-			if ($c['type'] === 'dir') {
-
-				$result = array_merge($result, $this->getAllFiles($path));
-
-			} else {
-
-				$result[] = $path;
-
-			}
 		}
 
 		return $result;
-
 	}
 
 	/**
diff --git a/apps/files_encryption/tests/crypt.php b/apps/files_encryption/tests/crypt.php
index ca14e3e2ccb..388980ad4fd 100755
--- a/apps/files_encryption/tests/crypt.php
+++ b/apps/files_encryption/tests/crypt.php
@@ -155,7 +155,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 	 */
 	function testSymmetricStreamEncryptShortFileContent() {
 
-		$filename = 'tmp-' . time() . '.test';
+		$filename = 'tmp-' . uniqid() . '.test';
 
 		$util = new Encryption\Util(new \OC_FilesystemView(), $this->userId);
 
@@ -214,7 +214,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 	function testSymmetricStreamEncryptLongFileContent() {
 
 		// Generate a a random filename
-		$filename = 'tmp-' . time() . '.test';
+		$filename = 'tmp-' . uniqid() . '.test';
 
 		$util = new Encryption\Util(new \OC_FilesystemView(), $this->userId);
 
@@ -297,7 +297,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 	 */
 	function testSymmetricStreamDecryptShortFileContent() {
 
-		$filename = 'tmp-' . time();
+		$filename = 'tmp-' . uniqid();
 
 		// Save long data as encrypted file using stream wrapper
 		$cryptedFile = file_put_contents('crypt:///'. $this->userId . '/files/' . $filename, $this->dataShort);
@@ -327,7 +327,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 	 */
 	function testSymmetricStreamDecryptLongFileContent() {
 
-		$filename = 'tmp-' . time();
+		$filename = 'tmp-' . uniqid();
 
 		// Save long data as encrypted file using stream wrapper
 		$cryptedFile = file_put_contents('crypt:///' . $this->userId . '/files/' . $filename, $this->dataLong);
@@ -418,7 +418,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 	 */
 	function testRenameFile() {
 
-		$filename = 'tmp-' . time();
+		$filename = 'tmp-' . uniqid();
 
 		// Save long data as encrypted file using stream wrapper
 		$cryptedFile = file_put_contents('crypt:///' . $this->userId . '/files/' . $filename, $this->dataLong);
@@ -431,7 +431,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 
 		$this->assertEquals($this->dataLong, $decrypt);
 
-		$newFilename = 'tmp-new-' . time();
+		$newFilename = 'tmp-new-' . uniqid();
 		$view = new \OC\Files\View('/' . $this->userId . '/files');
 		$view->rename($filename, $newFilename);
 
@@ -449,7 +449,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 	 */
 	function testMoveFileIntoFolder() {
 
-		$filename = 'tmp-' . time();
+		$filename = 'tmp-' . uniqid();
 
 		// Save long data as encrypted file using stream wrapper
 		$cryptedFile = file_put_contents('crypt:///' . $this->userId . '/files/' . $filename, $this->dataLong);
@@ -462,8 +462,8 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 
 		$this->assertEquals($this->dataLong, $decrypt);
 
-		$newFolder = '/newfolder' . time();
-		$newFilename = 'tmp-new-' . time();
+		$newFolder = '/newfolder' . uniqid();
+		$newFilename = 'tmp-new-' . uniqid();
 		$view = new \OC\Files\View('/' . $this->userId . '/files');
 		$view->mkdir($newFolder);
 		$view->rename($filename, $newFolder . '/' . $newFilename);
@@ -484,8 +484,8 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 
 		$view = new \OC\Files\View('/' . $this->userId . '/files');
 
-		$filename = '/tmp-' . time();
-		$folder = '/folder' . time();
+		$filename = '/tmp-' . uniqid();
+		$folder = '/folder' . uniqid();
 
 		$view->mkdir($folder);
 
@@ -500,7 +500,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 
 		$this->assertEquals($this->dataLong, $decrypt);
 
-		$newFolder = '/newfolder/subfolder' . time();
+		$newFolder = '/newfolder/subfolder' . uniqid();
 		$view->mkdir('/newfolder');
 
 		$view->rename($folder, $newFolder);
@@ -519,7 +519,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 	 * @medium
 	 */
 	function testChangePassphrase() {
-		$filename = 'tmp-' . time();
+		$filename = 'tmp-' . uniqid();
 
 		// Save long data as encrypted file using stream wrapper
 		$cryptedFile = file_put_contents('crypt:///' . $this->userId . '/files/' . $filename, $this->dataLong);
@@ -557,7 +557,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 	 */
 	function testViewFilePutAndGetContents() {
 
-		$filename = '/tmp-' . time();
+		$filename = '/tmp-' . uniqid();
 		$view = new \OC\Files\View('/' . $this->userId . '/files');
 
 		// Save short data as encrypted file using stream wrapper
@@ -590,7 +590,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 	 * @large
 	 */
 	function testTouchExistingFile() {
-		$filename = '/tmp-' . time();
+		$filename = '/tmp-' . uniqid();
 		$view = new \OC\Files\View('/' . $this->userId . '/files');
 
 		// Save short data as encrypted file using stream wrapper
@@ -614,7 +614,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 	 * @medium
 	 */
 	function testTouchFile() {
-		$filename = '/tmp-' . time();
+		$filename = '/tmp-' . uniqid();
 		$view = new \OC\Files\View('/' . $this->userId . '/files');
 
 		$view->touch($filename);
@@ -638,7 +638,7 @@ class Test_Encryption_Crypt extends \PHPUnit_Framework_TestCase {
 	 * @medium
 	 */
 	function testFopenFile() {
-		$filename = '/tmp-' . time();
+		$filename = '/tmp-' . uniqid();
 		$view = new \OC\Files\View('/' . $this->userId . '/files');
 
 		// Save short data as encrypted file using stream wrapper
diff --git a/apps/files_encryption/tests/hooks.php b/apps/files_encryption/tests/hooks.php
new file mode 100644
index 00000000000..44525791743
--- /dev/null
+++ b/apps/files_encryption/tests/hooks.php
@@ -0,0 +1,271 @@
+<?php
+/**
+ * ownCloud
+ *
+ * @author Bjoern Schiessle
+ * @copyright 2014 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/>.
+ *
+ */
+
+require_once __DIR__ . '/../../../lib/base.php';
+require_once __DIR__ . '/../lib/crypt.php';
+require_once __DIR__ . '/../lib/keymanager.php';
+require_once __DIR__ . '/../lib/stream.php';
+require_once __DIR__ . '/../lib/util.php';
+require_once __DIR__ . '/../appinfo/app.php';
+require_once __DIR__ . '/util.php';
+
+use OCA\Encryption;
+
+/**
+ * Class Test_Encryption_Hooks
+ * @brief this class provide basic hook app tests
+ */
+class Test_Encryption_Hooks extends \PHPUnit_Framework_TestCase {
+
+	const TEST_ENCRYPTION_HOOKS_USER1 = "test-encryption-hooks-user1";
+	const TEST_ENCRYPTION_HOOKS_USER2 = "test-encryption-hooks-user2";
+
+	/**
+	 * @var \OC_FilesystemView
+	 */
+	public $user1View;     // view on /data/user1/files
+	public $user2View;     // view on /data/user2/files
+	public $rootView; // view on /data/user
+	public $data;
+	public $filename;
+
+	public static function setUpBeforeClass() {
+		// reset backend
+		\OC_User::clearBackends();
+		\OC_User::useBackend('database');
+
+		\OC_Hook::clear('OC_Filesystem');
+		\OC_Hook::clear('OC_User');
+
+		// clear share hooks
+		\OC_Hook::clear('OCP\\Share');
+		\OC::registerShareHooks();
+		\OCP\Util::connectHook('OC_Filesystem', 'setup', '\OC\Files\Storage\Shared', 'setup');
+
+		// Filesystem related hooks
+		\OCA\Encryption\Helper::registerFilesystemHooks();
+
+		// Sharing related hooks
+		\OCA\Encryption\Helper::registerShareHooks();
+
+		// clear and register proxies
+		\OC_FileProxy::clearProxies();
+		\OC_FileProxy::register(new OCA\Encryption\Proxy());
+
+		// create test user
+		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1, true);
+		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2, true);
+	}
+
+	function setUp() {
+		// set user id
+		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
+		\OC_User::setUserId(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
+
+		// init filesystem view
+		$this->user1View = new \OC_FilesystemView('/'. \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1 . '/files');
+		$this->user2View = new \OC_FilesystemView('/'. \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '/files');
+		$this->rootView = new \OC_FilesystemView('/');
+
+		// init short data
+		$this->data = 'hats';
+		$this->filename = 'enc_hooks_tests-' . uniqid() . '.txt';
+
+	}
+
+	public static function tearDownAfterClass() {
+		// cleanup test user
+		\OC_User::deleteUser(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
+		\OC_User::deleteUser(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2);
+	}
+
+	function testDeleteHooks() {
+
+		// remember files_trashbin state
+		$stateFilesTrashbin = OC_App::isEnabled('files_trashbin');
+
+		// we want to tests with app files_trashbin disabled
+		\OC_App::disable('files_trashbin');
+
+		// make sure that the trash bin is disabled
+		$this->assertFalse(\OC_APP::isEnabled('files_trashbin'));
+
+		$this->user1View->file_put_contents($this->filename, $this->data);
+
+		// check if all keys are generated
+		$this->assertTrue($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
+			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
+		$this->assertTrue($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
+
+
+		\Test_Encryption_Util::logoutHelper();
+		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2);
+		\OC_User::setUserId(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2);
+
+
+		$this->user2View->file_put_contents($this->filename, $this->data);
+
+		// check if all keys are generated
+		$this->assertTrue($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/share-keys/'
+			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));
+		$this->assertTrue($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
+
+
+		// create a dummy file that we can delete something outside of data/user/files
+		// in this case no share or file keys should be deleted
+		$this->rootView->file_put_contents(self::TEST_ENCRYPTION_HOOKS_USER2 . "/" . $this->filename, $this->data);
+
+		// delete dummy file outside of data/user/files
+		$this->rootView->unlink(self::TEST_ENCRYPTION_HOOKS_USER2 . "/" . $this->filename);
+
+		// all keys should still exist
+		$this->assertTrue($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/share-keys/'
+			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));
+		$this->assertTrue($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
+
+
+		// delete the file in data/user/files
+		// now the correspondig share and file keys from user2 should be deleted
+		$this->user2View->unlink($this->filename);
+
+		// check if keys from user2 are really deleted
+		$this->assertFalse($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/share-keys/'
+			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));
+		$this->assertFalse($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
+
+		// but user1 keys should still exist
+		$this->assertTrue($this->rootView->file_exists(
+				self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
+				. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
+		$this->assertTrue($this->rootView->file_exists(
+				self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
+
+		if ($stateFilesTrashbin) {
+			OC_App::enable('files_trashbin');
+		}
+		else {
+			OC_App::disable('files_trashbin');
+		}
+	}
+
+	function testDeleteHooksForSharedFiles() {
+
+		\Test_Encryption_Util::logoutHelper();
+		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
+		\OC_User::setUserId(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
+
+		// remember files_trashbin state
+		$stateFilesTrashbin = OC_App::isEnabled('files_trashbin');
+
+		// we want to tests with app files_trashbin disabled
+		\OC_App::disable('files_trashbin');
+
+		// make sure that the trash bin is disabled
+		$this->assertFalse(\OC_APP::isEnabled('files_trashbin'));
+
+		$this->user1View->file_put_contents($this->filename, $this->data);
+
+		// check if all keys are generated
+		$this->assertTrue($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
+			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
+		$this->assertTrue($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
+
+		// get the file info from previous created file
+		$fileInfo = $this->user1View->getFileInfo($this->filename);
+
+		// check if we have a valid file info
+		$this->assertTrue(is_array($fileInfo));
+
+		// share the file with user2
+		\OCP\Share::shareItem('file', $fileInfo['fileid'], \OCP\Share::SHARE_TYPE_USER, self::TEST_ENCRYPTION_HOOKS_USER2, OCP\PERMISSION_ALL);
+
+		// check if new share key exists
+		$this->assertTrue($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
+			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));
+
+		\Test_Encryption_Util::logoutHelper();
+		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2);
+		\OC_User::setUserId(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2);
+
+		// user2 has a local file with the same name
+		$this->user2View->file_put_contents($this->filename, $this->data);
+
+		// check if all keys are generated
+		$this->assertTrue($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/share-keys/'
+			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));
+		$this->assertTrue($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
+
+		// delete the Shared file from user1 in data/user2/files/Shared
+		$this->user2View->unlink('/Shared/' . $this->filename);
+
+		// now keys from user1s home should be gone
+		$this->assertFalse($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
+			. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1 . '.shareKey'));
+		$this->assertFalse($this->rootView->file_exists(
+				self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/share-keys/'
+				. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));
+		$this->assertFalse($this->rootView->file_exists(
+			self::TEST_ENCRYPTION_HOOKS_USER1 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
+
+		// but user2 keys should still exist
+		$this->assertTrue($this->rootView->file_exists(
+				self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/share-keys/'
+				. $this->filename . '.' . \Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER2 . '.shareKey'));
+		$this->assertTrue($this->rootView->file_exists(
+				self::TEST_ENCRYPTION_HOOKS_USER2 . '/files_encryption/keyfiles/' . $this->filename . '.key'));
+
+		// cleanup
+
+		$this->user2View->unlink($this->filename);
+
+		\Test_Encryption_Util::logoutHelper();
+		\Test_Encryption_Util::loginHelper(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
+		\OC_User::setUserId(\Test_Encryption_Hooks::TEST_ENCRYPTION_HOOKS_USER1);
+
+		// unshare the file
+		\OCP\Share::unshare('file', $fileInfo['fileid'], \OCP\Share::SHARE_TYPE_USER, self::TEST_ENCRYPTION_HOOKS_USER2);
+
+		$this->user1View->unlink($this->filename);
+
+		if ($stateFilesTrashbin) {
+			OC_App::enable('files_trashbin');
+		}
+		else {
+			OC_App::disable('files_trashbin');
+		}
+	}
+
+}
diff --git a/apps/files_encryption/tests/keymanager.php b/apps/files_encryption/tests/keymanager.php
index 1467979f005..6f32c50743c 100644
--- a/apps/files_encryption/tests/keymanager.php
+++ b/apps/files_encryption/tests/keymanager.php
@@ -137,13 +137,24 @@ class Test_Encryption_Keymanager extends \PHPUnit_Framework_TestCase {
 	}
 
 	/**
+	 * @small
+	 */
+	function testGetFilenameFromShareKey() {
+		$this->assertEquals("file",
+				\TestProtectedKeymanagerMethods::testGetFilenameFromShareKey("file.user.shareKey"));
+		$this->assertEquals("file.name.with.dots",
+				\TestProtectedKeymanagerMethods::testGetFilenameFromShareKey("file.name.with.dots.user.shareKey"));
+		$this->assertFalse(\TestProtectedKeymanagerMethods::testGetFilenameFromShareKey("file.txt"));
+	}
+
+	/**
 	 * @medium
 	 */
 	function testSetFileKey() {
 
 		$key = $this->randomKey;
 
-		$file = 'unittest-' . time() . '.txt';
+		$file = 'unittest-' . uniqid() . '.txt';
 
 		$util = new Encryption\Util($this->view, $this->userId);
 
@@ -196,7 +207,7 @@ class Test_Encryption_Keymanager extends \PHPUnit_Framework_TestCase {
 	function testRecursiveDelShareKeys() {
 
 		// generate filename
-		$filename = '/tmp-' . time() . '.txt';
+		$filename = '/tmp-' . uniqid() . '.txt';
 
 		// create folder structure
 		$this->view->mkdir('/'.Test_Encryption_Keymanager::TEST_USER.'/files/folder1');
@@ -234,3 +245,12 @@ class Test_Encryption_Keymanager extends \PHPUnit_Framework_TestCase {
 		\OC_FileProxy::$enabled = $proxyStatus;
 	}
 }
+
+/**
+ * dummy class to access protected methods of \OCA\Encryption\Keymanager for testing
+ */
+class TestProtectedKeymanagerMethods extends \OCA\Encryption\Keymanager {
+	public static function testGetFilenameFromShareKey($sharekey) {
+		return self::getFilenameFromShareKey($sharekey);
+	}
+}
\ No newline at end of file
diff --git a/apps/files_encryption/tests/proxy.php b/apps/files_encryption/tests/proxy.php
index 419f95e1a38..51cc0b795e3 100644
--- a/apps/files_encryption/tests/proxy.php
+++ b/apps/files_encryption/tests/proxy.php
@@ -80,7 +80,7 @@ class Test_Encryption_Proxy extends \PHPUnit_Framework_TestCase {
 
 		// init short data
 		$this->data = 'hats';
-		$this->filename = 'enc_proxy_tests-' . time() . '.txt';
+		$this->filename = 'enc_proxy_tests-' . uniqid() . '.txt';
 
 	}
 
@@ -112,54 +112,4 @@ class Test_Encryption_Proxy extends \PHPUnit_Framework_TestCase {
 
 	}
 
-	function testPreUnlinkWithoutTrash() {
-
-		// remember files_trashbin state
-		$stateFilesTrashbin = OC_App::isEnabled('files_trashbin');
-
-		// we want to tests with app files_trashbin enabled
-		\OC_App::disable('files_trashbin');
-
-		$this->view->file_put_contents($this->filename, $this->data);
-
-		// create a dummy file that we can delete something outside of data/user/files
-		$this->rootView->file_put_contents("dummy.txt", $this->data);
-
-		// check if all keys are generated
-		$this->assertTrue($this->rootView->file_exists(
-			'/files_encryption/share-keys/'
-			. $this->filename . '.' . \Test_Encryption_Proxy::TEST_ENCRYPTION_PROXY_USER1 . '.shareKey'));
-		$this->assertTrue($this->rootView->file_exists(
-			'/files_encryption/keyfiles/' . $this->filename . '.key'));
-
-
-		// delete dummy file outside of data/user/files
-		$this->rootView->unlink("dummy.txt");
-
-		// all keys should still exist
-		$this->assertTrue($this->rootView->file_exists(
-			'/files_encryption/share-keys/'
-			. $this->filename . '.' . \Test_Encryption_Proxy::TEST_ENCRYPTION_PROXY_USER1 . '.shareKey'));
-		$this->assertTrue($this->rootView->file_exists(
-			'/files_encryption/keyfiles/' . $this->filename . '.key'));
-
-
-		// delete the file in data/user/files
-		$this->view->unlink($this->filename);
-
-		// now also the keys should be gone
-		$this->assertFalse($this->rootView->file_exists(
-			'/files_encryption/share-keys/'
-			. $this->filename . '.' . \Test_Encryption_Proxy::TEST_ENCRYPTION_PROXY_USER1 . '.shareKey'));
-		$this->assertFalse($this->rootView->file_exists(
-			'/files_encryption/keyfiles/' . $this->filename . '.key'));
-
-		if ($stateFilesTrashbin) {
-			OC_App::enable('files_trashbin');
-		}
-		else {
-			OC_App::disable('files_trashbin');
-		}
-	}
-
 }
diff --git a/apps/files_encryption/tests/share.php b/apps/files_encryption/tests/share.php
index e55427620a6..acf408a07f0 100755
--- a/apps/files_encryption/tests/share.php
+++ b/apps/files_encryption/tests/share.php
@@ -194,8 +194,9 @@ class Test_Encryption_Share extends \PHPUnit_Framework_TestCase {
 				. $this->filename . '.' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER2 . '.shareKey'));
 
 			// cleanup
-			$this->view->unlink(
-				'/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/' . $this->filename);
+			$this->view->chroot('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/');
+			$this->view->unlink($this->filename);
+			$this->view->chroot('/');
 
 			// check if share key not exists
 			$this->assertFalse($this->view->file_exists(
@@ -265,8 +266,9 @@ class Test_Encryption_Share extends \PHPUnit_Framework_TestCase {
 				. $this->filename . '.' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER2 . '.shareKey'));
 
 			// cleanup
-			$this->view->unlink(
-				'/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/' . $this->filename);
+			$this->view->chroot('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/');
+			$this->view->unlink($this->filename);
+			$this->view->chroot('/');
 
 			// check if share key not exists
 			$this->assertFalse($this->view->file_exists(
@@ -352,7 +354,9 @@ class Test_Encryption_Share extends \PHPUnit_Framework_TestCase {
 				. $this->filename . '.' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER2 . '.shareKey'));
 
 			// cleanup
-			$this->view->unlink('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files' . $this->folder1);
+			$this->view->chroot('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files');
+			$this->view->unlink($this->folder1);
+			$this->view->chroot('/');
 
 			// check if share key not exists
 			$this->assertFalse($this->view->file_exists(
@@ -482,9 +486,9 @@ class Test_Encryption_Share extends \PHPUnit_Framework_TestCase {
 				. $this->filename . '.' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER2 . '.shareKey'));
 
 			// cleanup
-			$this->view->unlink(
-				'/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files' . $this->folder1 . $this->subfolder
-				. $this->subsubfolder . '/' . $this->filename);
+			$this->view->chroot('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files');
+			$this->view->unlink($this->folder1 . $this->subfolder . $this->subsubfolder . '/' . $this->filename);
+			$this->view->chroot('/');
 
 			// check if share key not exists
 			$this->assertFalse($this->view->file_exists(
@@ -559,7 +563,9 @@ class Test_Encryption_Share extends \PHPUnit_Framework_TestCase {
 			. $this->filename . '.' . $publicShareKeyId . '.shareKey'));
 
 		// cleanup
-		$this->view->unlink('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/' . $this->filename);
+		$this->view->chroot('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/');
+		$this->view->unlink($this->filename);
+		$this->view->chroot('/');
 
 		// check if share key not exists
 		$this->assertFalse($this->view->file_exists(
@@ -636,7 +642,9 @@ class Test_Encryption_Share extends \PHPUnit_Framework_TestCase {
 			. $this->filename . '.' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER4 . '.shareKey'));
 
 		// cleanup
-		$this->view->unlink('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/' . $this->filename);
+		$this->view->chroot('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/');
+		$this->view->unlink($this->filename);
+		$this->view->chroot('/');
 
 		// check if share key not exists
 		$this->assertFalse($this->view->file_exists(
@@ -731,8 +739,10 @@ class Test_Encryption_Share extends \PHPUnit_Framework_TestCase {
 			. $this->filename . '.' . $recoveryKeyId . '.shareKey'));
 
 		// cleanup
-		$this->view->unlink('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/' . $this->filename);
-		$this->view->unlink('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/' . $this->folder1);
+		$this->view->chroot('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/');
+		$this->view->unlink($this->filename);
+		$this->view->unlink($this->folder1);
+		$this->view->chroot('/');
 
 		// check if share key for recovery not exists
 		$this->assertFalse($this->view->file_exists(
@@ -828,8 +838,10 @@ class Test_Encryption_Share extends \PHPUnit_Framework_TestCase {
 		$this->assertEquals($this->dataShort, $retrievedCryptedFile2);
 
 		// cleanup
-		$this->view->unlink('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER2 . '/files/' . $this->folder1);
-		$this->view->unlink('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER2 . '/files/' . $this->filename);
+		$this->view->chroot('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER2 . '/files/');
+		$this->view->unlink($this->folder1);
+		$this->view->unlink($this->filename);
+		$this->view->chroot('/');
 
 		// check if share key for user and recovery exists
 		$this->assertFalse($this->view->file_exists(
@@ -930,7 +942,9 @@ class Test_Encryption_Share extends \PHPUnit_Framework_TestCase {
 			. $this->filename . '.' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER3 . '.shareKey'));
 
 		// cleanup
-		$this->view->unlink('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/' . $this->filename);
+		$this->view->chroot('/' . \Test_Encryption_Share::TEST_ENCRYPTION_SHARE_USER1 . '/files/');
+		$this->view->unlink($this->filename);
+		$this->view->chroot('/');
 	}
 
 }
diff --git a/apps/files_encryption/tests/stream.php b/apps/files_encryption/tests/stream.php
index 2767bbe512b..fed2e7d89d1 100644
--- a/apps/files_encryption/tests/stream.php
+++ b/apps/files_encryption/tests/stream.php
@@ -99,7 +99,7 @@ class Test_Encryption_Stream extends \PHPUnit_Framework_TestCase {
 	}
 
 	function testStreamOptions() {
-		$filename = '/tmp-' . time();
+		$filename = '/tmp-' . uniqid();
 		$view = new \OC\Files\View('/' . $this->userId . '/files');
 
 		// Save short data as encrypted file using stream wrapper
@@ -122,7 +122,7 @@ class Test_Encryption_Stream extends \PHPUnit_Framework_TestCase {
 	}
 
 	function testStreamSetBlocking() {
-		$filename = '/tmp-' . time();
+		$filename = '/tmp-' . uniqid();
 		$view = new \OC\Files\View('/' . $this->userId . '/files');
 
 		// Save short data as encrypted file using stream wrapper
@@ -144,7 +144,7 @@ class Test_Encryption_Stream extends \PHPUnit_Framework_TestCase {
 	 * @medium
 	 */
 	function testStreamSetTimeout() {
-		$filename = '/tmp-' . time();
+		$filename = '/tmp-' . uniqid();
 		$view = new \OC\Files\View('/' . $this->userId . '/files');
 
 		// Save short data as encrypted file using stream wrapper
@@ -163,7 +163,7 @@ class Test_Encryption_Stream extends \PHPUnit_Framework_TestCase {
 	}
 
 	function testStreamSetWriteBuffer() {
-		$filename = '/tmp-' . time();
+		$filename = '/tmp-' . uniqid();
 		$view = new \OC\Files\View('/' . $this->userId . '/files');
 
 		// Save short data as encrypted file using stream wrapper
@@ -187,9 +187,9 @@ class Test_Encryption_Stream extends \PHPUnit_Framework_TestCase {
 	 */
 	function testStreamFromLocalFile() {
 
-		$filename = '/' . $this->userId . '/files/' . 'tmp-' . time().'.txt';
+		$filename = '/' . $this->userId . '/files/' . 'tmp-' . uniqid().'.txt';
 
-		$tmpFilename = "/tmp/" . time() . ".txt";
+		$tmpFilename = "/tmp/" . uniqid() . ".txt";
 
 		// write an encrypted file
 		$cryptedFile = $this->view->file_put_contents($filename, $this->dataShort);
diff --git a/apps/files_encryption/tests/trashbin.php b/apps/files_encryption/tests/trashbin.php
index 2a41ace4015..2f9ecfd9d5d 100755
--- a/apps/files_encryption/tests/trashbin.php
+++ b/apps/files_encryption/tests/trashbin.php
@@ -119,7 +119,7 @@ class Test_Encryption_Trashbin extends \PHPUnit_Framework_TestCase {
 	function testDeleteFile() {
 
 		// generate filename
-		$filename = 'tmp-' . time() . '.txt';
+		$filename = 'tmp-' . uniqid() . '.txt';
 
 		// save file with content
 		$cryptedFile = file_put_contents('crypt:///' .\Test_Encryption_Trashbin::TEST_ENCRYPTION_TRASHBIN_USER1. '/files/'. $filename, $this->dataShort);
@@ -223,7 +223,7 @@ class Test_Encryption_Trashbin extends \PHPUnit_Framework_TestCase {
 	function testPermanentDeleteFile() {
 
 		// generate filename
-		$filename = 'tmp-' . time() . '.txt';
+		$filename = 'tmp-' . uniqid() . '.txt';
 
 		// save file with content
 		$cryptedFile = file_put_contents('crypt:///' .$this->userId. '/files/' . $filename, $this->dataShort);
diff --git a/apps/files_encryption/tests/util.php b/apps/files_encryption/tests/util.php
index b1904cbadc7..97e3c518dac 100755
--- a/apps/files_encryption/tests/util.php
+++ b/apps/files_encryption/tests/util.php
@@ -142,8 +142,8 @@ class Test_Encryption_Util extends \PHPUnit_Framework_TestCase {
 
 		self::loginHelper($this->userId);
 
-		$unencryptedFile = '/tmpUnencrypted-' . time() . '.txt';
-		$encryptedFile =  '/tmpEncrypted-' . time() . '.txt';
+		$unencryptedFile = '/tmpUnencrypted-' . uniqid() . '.txt';
+		$encryptedFile =  '/tmpEncrypted-' . uniqid() . '.txt';
 
 		// Disable encryption proxy to write a unencrypted file
 		$proxyStatus = \OC_FileProxy::$enabled;
@@ -254,7 +254,7 @@ class Test_Encryption_Util extends \PHPUnit_Framework_TestCase {
 
 		\OC_User::setUserId(\Test_Encryption_Util::TEST_ENCRYPTION_UTIL_USER1);
 
-		$filename = '/tmp-' . time() . '.test';
+		$filename = '/tmp-' . uniqid() . '.test';
 
 		// Disable encryption proxy to prevent recursive calls
 		$proxyStatus = \OC_FileProxy::$enabled;
@@ -282,7 +282,7 @@ class Test_Encryption_Util extends \PHPUnit_Framework_TestCase {
 	function testGetFileSize() {
 		\Test_Encryption_Util::loginHelper(\Test_Encryption_Util::TEST_ENCRYPTION_UTIL_USER1);
 
-		$filename = 'tmp-' . time();
+		$filename = 'tmp-' . uniqid();
 		$externalFilename = '/' . $this->userId . '/files/' . $filename;
 
 		// Test for 0 byte files
@@ -318,7 +318,7 @@ class Test_Encryption_Util extends \PHPUnit_Framework_TestCase {
 
 	function testEncryptAll() {
 
-		$filename = "/encryptAll" . time() . ".txt";
+		$filename = "/encryptAll" . uniqid() . ".txt";
 		$util = new Encryption\Util($this->view, $this->userId);
 
 		// disable encryption to upload a unencrypted file
@@ -350,7 +350,7 @@ class Test_Encryption_Util extends \PHPUnit_Framework_TestCase {
 
 	function testDecryptAll() {
 
-		$filename = "/decryptAll" . time() . ".txt";
+		$filename = "/decryptAll" . uniqid() . ".txt";
 		$util = new Encryption\Util($this->view, $this->userId);
 
 		$this->view->file_put_contents($this->userId . '/files/' . $filename, $this->dataShort);
diff --git a/apps/files_encryption/tests/webdav.php b/apps/files_encryption/tests/webdav.php
index a2a8ce6e34f..8e8b9c53cee 100755
--- a/apps/files_encryption/tests/webdav.php
+++ b/apps/files_encryption/tests/webdav.php
@@ -113,7 +113,7 @@ class Test_Encryption_Webdav extends \PHPUnit_Framework_TestCase {
 	function testWebdavPUT() {
 
 		// generate filename
-		$filename = '/tmp-' . time() . '.txt';
+		$filename = '/tmp-' . uniqid() . '.txt';
 
 		// set server vars
 		$_SERVER['REQUEST_METHOD'] = 'OPTIONS';