Public-Key Based Efficient Key Distribution in Bluetooth

Bluetooth provides short range low power wireless communication popularly between laptops, cellular phones and media devices. The original security measurement for Bluetooth looks somewhat inadequate today to meet many important security requirements. In this paper a public key technology based key distribution for Bluetooth is proposed. Taking advantage of `RSA for paranoids´, the proposed method makes it possible for low-power and low computational capability embedded microprocessor to compute public-key technology based key distribution in reasonably short time. It is showed that the proposed method clearly has speed advantage when compared to the recent work on Bluetooth key exchange using Diffie-Hellman technology. The security of the proposed scheme against various attacks, including Gilbert´s side-channel attack, is also addressed.