Fuzzy Evaluation Mechanism of Trust Chain under Embedded Trusted Computing

Abstract

This paper proposes a trust chain evaluation mechanism based on fuzzy theory under embedded trusted computing. Firstly, this method described the trusted computing, the trusted computing platform, embedded system, which showed the important position of the trust chain in dependable computing. Then, in the process of the entity evaluation of trust chain, according to the influencing factors of trust chain in the trusted computing, considering the indirect trust degree, completed the establishment of evaluation method of trusted computing model based on the fuzzy set theory. Finally, combined the fuzzy logic inference with the trust transitivity, we proposed a trust chain evaluation mechanism based on similarity, and introduced the time decay function and adaptive weight coefficient to give the trust updating model. Simulation experiment shows that the proposed method can effectively improve the reliability of trust chain evaluation in embedded trusted computing, which has good application value.