Link Management Security in Bluetooth

Abstract

Bluetooth is a very useful and low cost wireless technology which has been developed for transferring data over short distances.Bluetooth is nowadays widely used for many purposes like file transfer, communicating with mouse and keyboard, listening to audio and many other applications. Bluetooth has many advantages over the other wireless networks such as Wi-Fi and Infrared. Security is a major concern in bluetooth as all the security options have not been explored in this wireless technology. Diffie Hellman protocol is a widely used protocol in the field of network security. But this protocol is basically a key exchange protocol and is applied during the exchange of keys In this thesis the diffie hellman protocol is applied on the random number, which is directly sent from the verifier to claimant, rather than the key itself. Then this random number is used for generating the keys.Sending the random number directly can cause security issues as the random number, bluetooth address and PIN can be known by the eavesdropper who can be a threat to the network. So this step improves the security of the bluetooth network.