Efficient Key Distribution and Key Computation Using EBR in Bluetooth SSP

Abstract: Bluetooth is a wireless technology which enables communication between Bluetooth-compatible devices such as mobile phones, computers, PDAs etc. Security is the major concern during wireless communication. There are possibilities of two Man In The Middle attack (MITM) on Bluetooth Secure Simple Pairing(SSP) .First Attack is based on the falsification of information sent during the input/output capabilities exchange named as Bluetooth - No Input, No Output - Man-In-The-Middle (BT-Nino-MITM) attack. Second attack is Bluetooth - Secure Simple Pairing - Out-Of-Band - Man-In-The-Middle (BT-SSP-OOB-MITM) attack requires some kind of visual contact to the victim devices in order to mislead the user to select a less secured Just Work (JW) association model instead of using a more secure Out Of Band (OOB) channel [1]. In this paper, we proposed key distribution and key computation scheme, where the cluster head (master node) establish unique key for each node in a cluster and computes a session key in each session for secure communications over an unreliable wireless network. The session key provides group secrecy and source authentication since it reduce the possibilities of Man In he Middle Attack (MITM). Secret sharing and power efficiency is important in order to ensure secure communication. Since, we proposed Energy Based Routing algorithm for low power consumption during secret sharing. In addition, we provided comparative analysis with Dynamic Source Routing and Destination Sequenced Distance-Vector Routing algorithms.

Keywords: Man In the Middle Attack, Simple Secure Pairing, Energy Based Routing, key distribution, Key Computation.