Abstract
Access to the wireless and radio connections is different from wired networks regarding to the vulnerability of wireless networks. Universal Mobile Telecommunication System (UMTS) as one of the third-generation cellular telecommunication systems is capable of adjustment to the Global system for Mobile Communications (GSM) and has resolved some of its drawbacks too. Furthermore, UMTS has provided an authentication and key agreement protocol (AKA) namely UMTS AKA that has some disadvantages like as bandwidth usage, huge memory to store data, lack of User Identification security, and synchronization problem. In this paper we investigate an authentication and key agreement protocol named IAP AKA that has resolved a number of problems associated with the security shortcomings of the UMTS AKA protocol. Then, we will represent a new protocol that has applied new procedures for the secrecy of User Identification by preventing general access to user identity. In addition, Elliptic Curve Cryptography is used to strength our protocol security. Finally, the most interesting property of our proposed protocol is Forward Secrecy which is necessary for user conversations confidentiality.
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