Re: encrypt the password stored in a file



Ken Perl wrote: 
In fact, I are just writing a demo program used in a presentation,
when I open its config file through screen sharing,  I don't want the
visiter see the plain text password.


Why didn't you say so?

my $password = 'in_the_real_world_your_password_would_go_here_protected_from_prying_eyes_by_decent_permissions_since_obscuring_it_is_as_secure_as_covering_your_head_with_your_arms_in_an_atomic_blast';

Done!

In other words, don't use a real password in the part they see...
.