There are also proposals for lower-layer opportunistic encryption, like Tcpcrypt. Being an OS feature it would take considerably longer time to reach wide-sprea

There are also proposals for lower-layer opportunistic encryption, like Tcpcrypt. Being an OS feature it would take considerably longer time to reach wide-spread deployment, but it would add opportunistic encryption to all TCP connections, including regular HTTP. http://www.ietf.org/id/draft-bittau-tcp-crypt-04.txt http://www.ietf.org/id/draft-bittau-tcp-crypt-04.txt