Privacy-Preserved Key Agreement with User Authentication

With the progress of information technology, thecomputer crimes are emerging in an endless stream. It is because of the user´s privacy should be protected, when the user submit a service request to the service provider, both of them should check the identity of the other, and then build a shared key to accomplish the service request. In this paper, we adopt the identity-based cryptosystem and the elliptic curve cryptosystem to design a privacy-preserved key agreement with user authentication. This protocol can achieve several properties: mutual authentication, deniability, and forward secrecy. Besides, the performance of the proposed protocol based on RSA is better than previous studies.