The protocol and several implementations (at least in C and in Java) are already there. It's called OTR (Off The Record) http://www.cypherpunks.ca/otr/ http://w

The protocol and several implementations (at least in C and in Java) are already there. It's called OTR (Off The Record) http://www.cypherpunks.ca/otr/ http://www.cypherpunks.ca/otr/ Not to confuse with a GTalk feature that has the same name.