Cellular wireless network technology has been progressing in last 3 decades through different generations. Each generation adds new features to make the network attractive to the users. The long term evolution (LTE) is newly adopted technology to offer enhanced capacity, coverage and speed for current mobility networks. However the new distinctive features bring some new challenges in the design of the security mechanisms. Hence in this paper, we propose an improved approach such as device certification based key agreement among all the entities in the LTE. The purpose is increasing the security levels between eNB and MME and the same status should be followed for MME and EPC, whenever UE moves from one eNB to another. And the Proposed algorithm for fast and secure access by key management is implemented using MATLAB GUI.
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