/**
* @param \File $file
* @param null|Key $key
* @return bool|\File
* @throws InvalidInput
* @throws CryptoException
*/
public function decryptFile($file, $key = null)
{
$key = $this->getKey($key);
$decryptedFilename = str_replace('.enc', '', $file->getFullPath());
try {
File::decryptFile($file->getFullPath(), $decryptedFilename, $key);
unlink($file->getFullPath());
$file->Filename = str_replace('.enc', '', $file->Filename);
$file->Name = str_replace('.enc', '', $file->Name);
$file->write();
return $file;
} catch (Exception $e) {
SS_Log::log(sprintf('Decryption exception while parsing "%s": %s', $file->Name, $e->getMessage()), SS_Log::ERR);
return false;
}
}
/**
* Returns a stream representation of a string.
*
* @param string $contents The string
*
* @return resource The stream with the string contents.
*/
private function getStreamFromString($contents)
{
$resource = fopen('php://memory', 'r+b');
File::writeBytes($resource, $contents);
rewind($resource);
return $resource;
}
/**
* Encrypts a string.
*
* @param string $contents The string to encrypt.
*
* @return string The encrypted string.
*/
protected function encrypt($contents)
{
$resource = fopen('php://memory', 'r+b');
File::writeBytes($resource, $contents);
rewind($resource);
$out = fopen('php://memory', 'r+b');
File::encryptResource($resource, $out, $this->key);
rewind($out);
return stream_get_contents($out);
}