Even if the memory address is the same to perl, there is never a guarentee that the OS didn't change the memory location. If that memory location hit the swap file, it would be diffcult to truly get rid of it (unless you're using an encrypted swap file). It should be easy to stop a casual attacker from recovering the key, and stoping a determined attacker should be possible with a little effort if they don't have physical access to the box. If a determined attacker has physical access and you didn't use an encrypted swap file, you're screwed unless you completely destroy the hard drive.

----
I wanted to explore how Perl's closures can be manipulated, and ended up creating an object system by accident.
-- Schemer

:(){ :|:&};:

Note: All code is untested, unless otherwise stated

In reply to Re: Re: Re: Handling encryption safely by hardburn
in thread Handling encryption safely by bagu

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