How to protect the executable perl files from PAR::Packer?

Question

I have created an executable Perl script file using the below command.

pp -x -o output.exe test.pl

The exe file was successfully generated. But when I extract the file using the below command I am able to see the source code.

unzip output.exe

Here I want to protect my Perl script. Even when I extract the file using PAR::Packer that should ask password to extract the file.

Please suggest your views on this.

Thanks in advance.