INVESTIGATIONS IN BRUTE FORCE ATTACK ON GSM BASED ON DES AND AES

With the increase in the demand of wireless and mobile devices day-by-day, a need for maintaining more secure connection comes up. The more secure a connection is , the better and satisfactory will be its performance. Security is an extremely challenging issue in mobile and wireless systems these days. A number of issues come up in terms of network security and this directly affects throughput and QoS of cellular systems. Among different types of security issues, the most common ones are ensuring the anonymity of parties involved, authenticating the parties to each other and confidentiality of the message. Even wired networks used to have various security issues but the wireless and mobile systems are prone to all these vulnerabilities plus many more risks inherent to wireless and mobile systems. GSM, a cellular system for mobile communication uses some version of A5 algorithm for ensuring security but we observed that DES is secure than A5 algorithm. Further, AES is even found to be far more secure than DES also as it takes more time to attack AES based security system as compared to either A5 or DES based systems.