Post-Quantum Key Exchange Protocols
  If an eavesdropper Eve is equipped with quantum computers, she can easily break the public key exchange protocols used today. In this paper we will discuss the post-quantum Diffie-Hellman key exchange and private key exchange protocols. 
Xiangdong Li, Lin Leung, Andis Chi-Tung Kwan, Xiaowen Zhang, Dammika   Kahanda, Michael Anshel