[Chugalug] Email message authentication, encryption

[John Aldrich]

Quoting Billy <flushy at flushy.net>:

> Think of it like snail mail.
>
> One way ensures the message came from that street address and only   
> that street address.
>
> The other way ensures that the message inside the envelope was not   
> tampered with and was written by the person it says it was written by.
>
> Gpg can also fully encrypt the message. Thus ensuring that the   
> envelope wasn't opened, that only the recipient can open it, and   
> that it was indeed written by the person that it says wrote it.
>
Also, with regards to the question about using GPG in your email  
client. Most email clients will require a plugin of some sort. Some  
will not work with GPG at all (Don't know if the latest version of  
Windows Mail will, for example.) Last time I looked at GPG and MS  
Outlook, it was kind of a kludge as there was not a real  
"Microsoft-blessed" plugin.