Mobile Assisted Bit Sequence Authentication and Authorization (MABSAA)

This paper introduces a novel scheme for mobile handset authentication and authorization in a geographically wide spread area spanning the coverage of multiple network service providers. The existing set up involves the exchange of a large number of control signals between the foreign network and mobile node, and between foreign network and home network for authentication and authorization, which is therefore vulnerable to eavesdropping and malicious attacks. Our scheme provides a lesser number of transactions for this purpose and incorporates multiple layers of security against hacks. First, the mobile device is equipped with an encrypted bit sequence that contains its authentication and authorization information. Then, when it moves into the domain of a foreign network, its bit sequence is read in order to provide it with the appropriate services. In essence, this procedure eliminates the need for the foreign network to communicate with the home network for establishing the mobile’s identity. We show its effectiveness by comparing the authentication time between the existing set up and the proposed scenario.