A Hybrid Cloud Dynamic Trust Measurement Method based on Recommendation Feedback

摘要

In order to improve the cloud service quality, to ensure the cloud users select the trusted cloud service providers, to solve the recognition problem of malicious user at cloud server side, a hybrid cloud dynamic trust evaluation model and trust metrics method based on recommendation feedback is proposed. The deviation of service quality and evaluation standard is regard as the calculation basis of direct trust. The indirect trust is calculated by using the indirect trust graph constructed by the recommendation path. The recommendation trust calculation system is constructed by the reliability of evaluation, the familiarity of the entity and the similarity of evaluation, which the dynamic trust evaluation of hybrid cloud has became a reality. The simulation experiment result shown that the model evaluation result is more closer to the real trust degree of cloud service providers, and the model can resist attacks from malicious cloud users effectively. Compared with the CCECDTM model, the success rate of access increased 8%.