RAVS: Remote Attestation of Video Security Based on Trusted Platform Module

摘要

The remote attestation of video security finds its application in many practical video distribution services (e.g., video-on-demand, video conferences), where the services providers need to make sure that the legal clients receive the untampered video. It means that the integrity of the video client and the authentication of the received video must be ensured. However, existing approaches usually fail to fulfill above two requirements in some degree. In this paper, we present RAVS, architecture of remote attestation based on Trusted Platform Module (TPM), where a protocol of pRAVS is designed by incorporating into this framework. A video hashing algorithm based on TPM is developed to authenticate the video frames received by the client in order to prevent man-in-the-middle attacks. In addition, an attestation mode of differentiable granularity is proposed to improve the efficiency of remote attestation and methods to search the first untrusted frame are discussed. Experiments show that the video hash algorithm is effective to detect the tampered frames and also demonstrate the characteristics of the proposed attestation mode of differentiable granularity.