src/Passport.php
public static function keyPath($file)
    {
        $file = ltrim($file, '/\\');

        return static::$keyPath
            ? rtrim(static::$keyPath, '/\\').DIRECTORY_SEPARATOR.$file
            : storage_path($file);
    }
public static function keyPath($file)
    {
        $file = ltrim($file, '/\\');

        return static::$keyPath
            ? rtrim(static::$keyPath, '/\\').DIRECTORY_SEPARATOR.$file
            : storage_path($file);
    }
public static function keyPath ( $ file ) { $ file = ltrim ( $ file , '/\\' ) ; return static :: $ keyPath ? rtrim ( static :: $ keyPath , '/\\' ) . DIRECTORY_SEPARATOR . $ file : storage_path ( $ file ) ; }
The location of the encryption keys.

@param  string  $file
@return string
The location of the encryption keys .