Re: GnuPG/OpenPGP primer?

["Don Levey-7" <user=51@nabble.blu.org>]

 Dan Ritter wrote: 
> The properties of the classic public key systems are as 
> follows: 
> 
> Take a message and encrypt it with your private key: Now anyone 
> can decrypt it with your public key and assure themselves it 
> came from you, or at least someone with your private key. 
> 
> Take a message and encrypt it with Bob's public key: Now only 
> Bob's private key can decrypt it. 
> 
> Take a message, encrypt it with your private key (signing) and 
> then Bob's public key. Now only Bob's private key can decrypt 
> it, and then he has to decrypt it with your public key, showing 
> that the message was from you to him. 
>