Mutual Authentication and Key Agreement for GSM

We propose an efficient identity based mutual authentication scheme for GSM. In the proposed scheme, mobile station (MS) and visitor location register (VLR) authenticate each other and establish a session key to communicate securely for every communication. Our scheme requires less bandwidth and storage. The scheme does not involve certificate management and is resilient to replay and man-in-the middle attacks. We also compare the performance of our scheme with that of the existing schemes.