Intro After LogJam vulnerability was published, and then the WeakDH paper (Imperfect Forward Secrecy: How Diffie-Hellman Fails in Practice) was published, we were asked a few times: since Secure Session uses Diffie-Hellman key negotiation, is prone to the same attacks? We wrote this small note to explain why we are safe from such attacks, and how generally decisions about such important security features are being done for the open source Themis crypto library.
