Abstract 3rdGeneration Partnership Project (3GPP) has proposed the Authentication and Key Agreement (AKA) protocol to achieve the security requirements of Evolved Packet System (EPS) in the Long Term Evolution (LTE) network, called (EPS- AKA) protocol. Nevertheless, the EPS-AKA protocol is still has some drawbacks in authentication process due to inherit some weaknesses from the predecessor protocols. This paper proposes a secure anonymity Key of Authentication and Key Agreement (SAK-AKA) protocol for LET network to enhance the security level of EPS-AKA protocol. The same security architecture of EPS-AKA is used by the proposed protocol without adding extra cost to the system. Specifically, the SAK-AKA protocol increases the difficulty of defeating the authentication messages by complete concealing of IMSI with perfect forward security. The extensive security analysis proves that the SAK-AKA protocol is secure against the drawbacks of current EPS- AKA protocol. Moreover, the performance analysis in terms of the bandwidth consumption, the authentication transmission overhead and the storage consumption demonstrates that the SAK-AKA protocol relatively is more efficient than the current EPS-AKA protocol.

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[20] 3gpp-ts, 35.216, 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Specification of the 3GPP Confidentiality and Integrity Algorithms UEA2 and UIA2; Document 2: SNOW 3G specification (2009-12), Release 9. 3GPP Organizational Partners. SAK-AKA: A Secure Anonymity Key of Authentication and Key Agreement protocol for LTE network 801 Shadi Nashwan received his B.Sc. degree in Computer Science from Alazhar University, Palestine, in 2001, and M.Sc. degree in Computer Science from university of Jordan, Jordan, in 2003, and Ph.D. degree in Computer Science from Anglia Ruskin University, UK, in 2009. He is head of Computer Science and Information department, Aljouf University, KSA. His research focuses on authentication protocol wireless network, mobility management, and wireless network security. He has published several papers in the area of authentication protocol, recovery techniques and mobility management.