PGP

Ah! I found what I needed. Kremlin words great! Looks like a neato application. PGP is not an option, it requires a service to be running.

Your cross platform compatibility requirement is the sticking point here. Your drive will have to be formatted FAT 32 on a PC so that both the Mac and PC can read and write to it. You will have to have two versions of the software, one for the Mac and another for the PC too because PC software will not run on a Mac and vice-versa. The only exception to this is Java...

and some sort of mail encryption. Hopefully this will be PGP or GnuPG based, which would be the most useful to me, though an Apple specific encryption that only works for other 10.4 Mail. ...

Definitely go for the encrypted disk image (dmg) file. With password protected stuffit files you can still see the contents if not open them (though you can stop this by making an archive file like a .tar then stuffing that). Encrypted dmg files use aes which is pretty secure, and can easily be made read/write disks, so once mounted they work just like a normal drive,...

To be honest, yes you're paranoid :P j/k If you download and verify (with MD5 or GPG/PGP signatures) and it's from a reputable mirror (like apache.org for example) you can be relatively sure the app won't do anything malicious.

How can I import OS X's AddressBook's contacts to Thunderbird? I tried addressbook backup - not recognized in Thunderbird. Selecting everything and saving as a group vcard - gets recognized on thunderbird side, but import fails. And fails again. Is there a fast way to import GPG too? I had a look on the thunderbird / gpg site but all I found was source, and it was...

I always kepp GnuPG loaded, with the GPGMail plugin for Apple Mail, and GPGKey for managing keys, it offers most of the commercial PGP functionality in an open-source solution. The problem: none of my friends or colleagues would even consider encrypting their mail, even if it pertained to personal, or even financial, information. They consider it too much effort. These are...

from a well known certificate agency! Also I read the reviews on version tracker for some of the PGP software for mac they said it was very buggy and very poor customer support. ...

GnuPG is open source, PGP proprietary software. ...

but they are nothing compared to PGP Personal Edition with a perfect integration in Mail, encyption services for diskimages or the clipboard.... ...