[Mailman-Developers] PGP and Mailman

[Stefan Schlott]

Nigel Metheringham wrote:

> In theory, you could encrypt the message once with a session key, and
> then distribute it n times, each time adding the packet which has the
> session key encrypted with the public key of the recipient. 

...which is the very thing making gpg encryption so slow :-)
The expensive part is the public key operation, not the symmetric 
encryption.

Stefan.