gpg
GPG is a great way to ensure that all parties communicating via email can maintain trust. Here is my GPG public key, should you doubt any of my emails.
importing
In order for GPG to know if a body of text has been created by an authentic party one must first tell gpg what an authentic party is.
gpg --import < ''key text''or, if you prefer to use the keyservers,
gpg --recv-keys CE8F4588
Now you should have received the above key.
gpg provides one with a method for validating that downloads are authentic, that email is from a trusted source. It is also possible to have people that you trust, trust others. So if their public keys are signed by people who you trust they can have their trust elevated in your key ring.
-----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.4.6 (GNU/Linux)
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Info