David Blevins wrote: >On Tue, Jun 17, 2003 at 01:44:43PM -0500, Bob Tanner wrote: > > >>Anyone heard of a way to encrypt every sent message at the MTA level with a >>specific key? >> >>I don't mean smtp with tls, I mean literally pgp encrypting and signing each >>message. >> >> >> > >I've seen a lot of good responses to this thread, but one thing is clear; >some people are giving suggestions for encrypting the message and some for >signing the message. What is it you are trying to achieve, hiding the >data or protecting the data from being tampered with? > >You wouldn't need to encrypt *and* sing a message. > > Sure you would. >Actually encrypting messages with pgp would prevent them from being read >but would be a total pain as you would need their public key first (i >don't think pgp does symmetric encryption). > > It has several options for symetric encryption. When it sends a message using public key encryption it generates a random message key, uses that random key to encrypt the message using a symmetric algorithm and then attaches the message key encrypted with the public key. There is a command line option to just use one of the symmetric algorithms using a user specified key. >To sign the email, you'll just need to attach the digital signature as an >attachment with the right MIME type. The email itself will still be >readable. This only makes sense if people are actually going to check the >signatures, how many people do that. I've seen a few signed messages on >the list, but never bothered to ask people for their public key to verify >it. > >-David > >_______________________________________________ >TCLUG Mailing List - Minneapolis/St. Paul, Minnesota >http://www.mn-linux.org tclug-list at mn-linux.org >https://mailman.real-time.com/mailman/listinfo/tclug-list > > > _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota http://www.mn-linux.org tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list