http://www.truecrypt.org is one I use, and it does an excellent job. This is the base filesystem I use on all of my portable media, as well as offsite home backups. Yeah, I used to have to wear a paranoid hat at work, and it leaked into my personal life :).

--MidLifeXis

In reply to Re^2: Is it possible to sanitize Perl memory that holds sensitive data? (crypto implications) by MidLifeXis
in thread Is it possible to sanitize Perl memory that holds sensitive data? (crypto implications) by missingthepoint

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