Key Exchange Using Passwords and Long Keys

  title={Key Exchange Using Passwords and Long Keys},
  author={Vladimir Kolesnikov and Charles Rackoff},
  booktitle={IACR Cryptology ePrint Archive},
We propose a new model for key exchange (KE) based on a combination of different types of keys. In our setting, servers exchange keys with clients, who memorize short passwords and carry (stealable) storage cards containing long (cryptographic) keys. Our setting is a generalization of that of Halevi and Krawczyk [17] (HK), where clients have a password and the public key of the server. We point out a subtle flaw in the protocols of HK and demonstrate a practical attack on them, resulting in a… CONTINUE READING
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