linux.com: CLI Magic: Sending and reading secret mail

Posted on Tuesday, August 17, 2004 @ 15:09:18 EDT by meshal
In an earlier column, we went over the basics of creating key-pairs: the public and secret versions of your GNU Privacy Guard (GnuPG) keys. But if you're a government employee who wants to become a whistle-blower and report corruption, evil-doers, or gross mismanagement, you'll need to do more than create your keys. You'll need to encrypt and sign the email you send me with your expos?. A private key is just that: private. You protect it. You don't share it, don't publish it, and don't email it to friends. You need access to your private key -- that's when you're asked for your passphrase -- when you:
Read data encrypted with your public key 
Create a digital signature 

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