Research on Trusted Computing Technology

Trusted computing, as a novel technology of information security, has become an important research area of information security. TCG comprised of the international IT giants has published a series of trusted computing specifications to promote the comprehensive development of the trusted computing technology and industry, and the core specifications have been accepted as international standardization by ISO/IEC. In academia, the research institutions at home and abroad study the trusted computing technology in depth and have gained rich achievements. In China, the independent trusted computing standard infrastructure is founded with the core of TCM on the basis of the independent cryptography algorithms, forming the whole trusted computing industry chains, which breaks the monopolization of the trusted computing technology and industry by the international IT giants. With the rapid development of trusted computing field, there are still lots of problems on the key technologies to be solved, and the related research has been done in succession recently. This paper comprehensively illustrates our research results on trusted computing technology. Beginning with establishing the trust of the terminal platforms, we propose a trustworthiness-based trust model and give a method of building trust chain dynamically with information flow, which ensure the real time and security protection of the trust establishment to some extent. Aiming at the security and efficiency problems of the remote attestation protocols, we propose the first property-based attestation scheme on bilinear map and the first direct anonymous attestation scheme based on the q-SDH assumption from the bilinear maps. In trusted computing testing and evaluation, we propose a method of generating test cases automatically with EFSM, and from the method develop a trusted computing platform testing and evaluation system which is the first to be applied in China practically.