/**
* @param ASSLEncryption $enc
* @param string $status
* @return array
*/
private function _load_keys($enc, $status = '')
{
//get key files from the directory
$files = array_filter(glob($enc->getKeyPath() . '/*'), function ($file) {
return preg_match('/.pub$/', $file);
});
$pub_keys = array_map(function ($file) {
return basename($file, ".pub");
}, $files);
//load active keys from db
$status_sql = '';
if ($status) {
$status_sql = " WHERE `status` = " . (int) $status;
}
$query = $this->db->query("SELECT * FROM " . $this->db->table('encryption_keys') . $status_sql);
return $query->rows;
}
/**
* Decrypt 1 field of data
* @param string $crypt_data
* @param int $key_id
* @param null|string $pass
* @return string
*/
public function decrypt_field($crypt_data, $key_id = 0, $pass = null)
{
if (empty($pass)) {
$pass = $this->passphrase;
}
//if encryption off return pure data
if (!$this->active) {
return $crypt_data;
}
//detect key to use
$key_name = $this->_detect_decrypt_key($key_id);
$enc = new ASSLEncryption('', $key_name, $pass);
return $enc->decrypt($crypt_data);
}