A conceptual framework providing Direct Anonymous Attestation (DAA) protocol in trusted location-based services (LBS)

Various applications have evolved in mobile devices and wireless network services. The major challenge in these systems is essentially providing a trustworthy mobile location environment and reliable protection of user´s information. In this paper, we explore a new approach in Privacy Enhancing Technologies (PETs) which will result in the privacy enhancement of user personal data and location information in mobile network services. We propose a group signature scheme adopted by trusted computing technologies known as Direct Anonymous Attestation (DAA) protocol to anonymously verify the authority of users and preserving privacy of user´s private location information. DAA protocol is a part of Trusted Platform Module (TPM) functionalities which offers a variety of interesting security features. We create the foundation for running trusted applications, network and services on top of existing Mobile Location Protocol (MLP) and trusted cloud computing as well. In this research, we emphasize on the use of the attestation by giving a high level overview of DAA protocol. We propose a new conceptual framework for securing the communication between mobile devices (clients) and LBS Server based on DAA protocol to form a more trusted and privacy preserving infrastructure in LBS environment.