[C:/TEMP] perl -MO=Deparse not_encrypted.pl
print "hello world\n";

...

[C:/TEMP] perl -MO=Deparse encrypted.pl
Aborting, Compiler detected at d:/Claudio/Perl/lib/DynaLoader.pm line 219.
Compilation failed in require at encriptado.pl line 1.
BEGIN failed--compilation aborted at encriptado.pl line 1.