I 'd like to know what is the difference between Ephemeral Diffie Hellman (EDH) and Diffie Hellman (DH) ? There is an explanation in Internet , but it is not clear for me.
-- are EDH parameters computed many times ( periodically ? ) along the same communication / session? ( Vs DH parameters are computed once )
-- Why Eve cannot decrypt message even if she have got the server private key ... ?
Thanks for your help