sub crypto {
  my $file = shift;
  my $action = shift;
  my $op = $action eq 'encrypt' ? '>' : '<';
  my $suffix = $action eq 'encrypt' ? '.aes' : '';

  my $fh;
  open($fh, "$op:via(PerlIO::via::CBC)", "$file$suffix");
      if ($action eq 'encrypt') {
        open(SOURCE, '<', $file) or die $!;
          print $fh $_ while(sysread(SOURCE, $_, 1024));
        close SOURCE;
      } else {
        open PLAIN, '>', "$file.jpg" or die $!;
          print PLAIN <$fh>;
        close PLAIN or die $!;
      }
  close $fh;
  return 1;
}
1;