Is it possible to publish a package that could be imported by customer securely

Is it possible to publish a package that could be securely given to a customer to be imported into there .fla file without allowing them to open the .as file to view/change the sourcecode of the package?

make an mxp for it would make the as LESS accessible…but still accessible

Is it not possible to hide the .as package to work similarly to a native flash class in which can not be edited.