/**
* write private system key (recovery and public share key) to disk
*
* @param string $key encrypted key
* @param string $keyName name of the key
* @return boolean
*/
public static function setPrivateSystemKey($key, $keyName)
{
$keyName = $keyName . '.privateKey';
$header = Crypt::generateHeader();
return self::setKey(self::$encryption_base_dir, $keyName, $header . $key, new \OC\Files\View());
}
/**
* write private system key (recovery and public share key) to disk
*
* @param string $key encrypted key
* @param string $keyName name of the key file
* @return boolean
*/
public static function setPrivateSystemKey($key, $keyName)
{
$header = Crypt::generateHeader();
$view = new \OC\Files\View('/owncloud_private_key');
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
if (!$view->file_exists('')) {
$view->mkdir('');
}
$result = $view->file_put_contents($keyName, $header . $key);
\OC_FileProxy::$enabled = $proxyStatus;
return $result;
}
/**
* write header at beginning of encrypted file
*
* @throws Exceptions\EncryptionException
*/
private function writeHeader()
{
$header = Crypt::generateHeader();
if (strlen($header) > Crypt::BLOCKSIZE) {
throw new Exceptions\EncryptionException('max header size exceeded', 30);
}
$paddedHeader = str_pad($header, Crypt::BLOCKSIZE, self::PADDING_CHAR, STR_PAD_RIGHT);
fwrite($this->handle, $paddedHeader);
$this->headerWritten = true;
}
