Take a look at the new google policy of forward secrecy.
http://googleonlinesecurity.blogspot.com/2011/11/protecting-data-for-long-term-with.htmlMaybe a good discussion for the folks at PolarSSL and Hiawatha.
http://en.wikipedia.org/wiki/Perfect_forward_secrecyI do not think there is a rush for this, but something to consider for 2014
marco