A new lightweight key exchange protocol with provable security for securing cloud-assistec. Mobile communications

This paper introduces a new lightweight key exchange (KE) protocol which can be suitably implemented on resource-constrained smart devices to protect the privacy of communications in mobile networks. The most attractive features of this new KE protocol are provable security and lightweight. The security of this new KE protocol is based on the known impossibility of finding the unique values for variables in a system of equations when the number of variables are more than the number of equations. This new KE protocol imposes low computational load and the low memory consumption make this new KE protocol to be suitably implemented in the resource-constrained devices. The basic KE scheme provides key agreement between two parities with the desired feature of Key Confirmation (KC), Implicit Key Authentication (IKA), and know-key security (KK).