Abstract
In this paper, we propose a certificateless noninteractive key exchange protocol. No message exchange is required in the protocol, and this feature will facilitate the applications where the communication overhead matters, for example, the communications between the satellites and the earth. The public key certificate is removed as well as the key escrow problem using the certificateless public key cryptosystem. The security of the protocol rests on the bilinear Diffie–Hellman problem, and it could be proved in the random oracle model. Compared with previous protocols, the new protocol reduces the running time by at least 33.0%.
Highlights
Noninteractive key exchange (NIKE) protocols enable two users to establish a shared key without any interactions
In a NIKE, every user puts up his public key in a public directory, and two users can set up a shared key with the other’s public key and his own private key [1]. e earliest example of NIKE is Diffie–Hellman key exchange proposed in the seminal paper of [2]
We propose a noninteractive key exchange protocol based on certificateless public key cryptosystem
Summary
Noninteractive key exchange (NIKE) protocols enable two users to establish a shared key without any interactions. E earliest example of NIKE is Diffie–Hellman key exchange proposed in the seminal paper of [2]. NIKE is very useful to secure the communications where the communication delay matters, for example, the communications in the wireless networks where two terminals are far away from each other. We propose a noninteractive key exchange protocol based on certificateless public key cryptosystem. (1) A noninteractive key agreement protocol is proposed based on the certificateless public key cryptosystem. (2) e security model of NIKE protocols in the setting of certificateless public key cryptosystem is studied.
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