Abstract
In an advancement of communication field, wireless technology plays a predominant role in data transmission. In the timeline of wireless domain, Wi-Fi, Bluetooth, zigbee etc are some of the standards, which are being used in today’s wireless medium. In addition, the WiMax is introduced by IEEE in IEEE 802.16 for long distance communication, specifically 802.16e standard for mobile WiMax. It is an acronym of Worldwide Interoperability for Microwave Access. It is to be deliver wireless transmission with high quality of service in a secured environment. Since, security becomes dominant design aspect of every communication, a new technique has been proposed in wireless environment. Privacy across the network and access control management is the goal in the predominant aspects in the WiMax protocol. Especially, MAC sub layer should be evaluated in the security architecture. It has been proposed on cryptography algorithm AES that require high cost. Under this scenario, we present the optimized AES 128 bit counter mode security algorithm for MAC layer of 802.16e standards. To design a efficient MAC layer, we adopt the modification of security layers data handling process. As per the efficient design strategy, the power and speed are the dominant factors in mobile device. Since we concentrate mobile WiMax, efficient design is needed for MAC Security layer. Our proposed model incorporates the modification of AES algorithm. The design has been implemented in Xilinx virtex5 device and power has been analyzed using XPower analyzer. This proposed system consumes 41% less power compare to existing system.
Highlights
It is evident that the wireless system uses the open type radio channel; it requires more security in order to protect the integrity and traffic confidentiality, and to put off different network security attacks: denial of service and brute force attacks
The high speed, high throughput Advanced Encryption Standard (AES) 128 bit architecture has been discussed by C.P Fan, J.K
A fully pipelined structure of high speed AES processor has been designed by Alireza Hodjat and Ingrid Verbauwhede (2004), which takes 21.5 Gbps throughput speed [6]
Summary
It is evident that the wireless system uses the open type radio channel; it requires more security in order to protect the integrity and traffic confidentiality, and to put off different network security attacks: denial of service and brute force attacks. It is designed to facilitate wireless internet service provider (WISP)’s backhaul, WIFI mesh networks, broadband internet connectivity to proprietary, but nowadays it is extended to end user model. Based on this attack model, today there exist varieties of programs and tools that can be used to break the WEP protocol in few seconds This leads to search for a new efficient algorithm or protocol that assures reliable and secured data transmission in wireless environment. Under these circumstances, Rijndael AES in Counter with Cipher Block Chaining (CBC)-MAC mode has become most assuring solution for achieving security in wireless networks.
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