Trust model based on risk evaluation

In distributed and dynamic network environment,the trust relationship between entities be the key problem in security area.the existing trust models mostly regard risk evaluation as a supplement to trust,or neglect risk.this will result in that the security decision is unilateral.According to this problem,the author proposed a method for trust computation based on risk evaluation.the computation described risk quantification method by identifying and quantifying the significance of assets,criticality of threats and vulnerability of threats,and a trust computation method based on risk evaluation was designed.