Re: Controlling licensed software?

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Adi Fairbank wrote:
> Take a look at Crypt::License on CPAN.  I used it a couple years back to do
> exactly what you are trying to do.  It encrypts your Perl source code and then
> decrypts it on the fly.  There is a slight overhead for the decryption, but if
> running under mod_perl, that should be negligible since it would only need to
> decrypt on apache startup.

Just be aware that if perl sees the decrypted code, the user can see it 
too. It's not trivial but certainly doable, for example while running 
under perl debugger. I wonder why Crypt::License docs don't include any 
warning. Or do I miss something? I haven't tried this particular module, 
but all the previous discussions about similar modules had the conclusion 
that you can really hide the code, other than making it harder to get to it.

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