Fair point, and thanks for remaining me. I meant to mention this in the actual post, but it is showing the output in the console; that is the file is completely empty.

I'll give it like 10 or 15 files to encrypt and it prints sha1's output to the console and still creates the file 'data,' just empty.

I'm not at work to actually test that fix, but I will be sure to first thing in the morning. I'd do it here at home, but I don't have Perl installed, and I'm only going to be working with Perl for another few weeks.

Thanks for the speedy response!