Research on Trust Management Model in Cloud Manufacturing

For security and trust issues in cloud manufacturing systems, trust management issues in the trust system are analyzed. An effective trust management model was proposed and introduced in detail. The model considers multiple trust-related factors. The model adds a time period to the calculation of direct trust. The reputation information of the node, the attenuation of the trust recommendation transmission, and the weight of the trust level are taken into consideration. The model combines weighted tightness with trust. This method implements traversal of the recommended node. Ultimately, indirect trust is derived. Based on the values of direct trust, indirect trust, and the weight of the overall trust assessment, a comprehensive degree of trust is derived. Trust values are saved and updated. Experiments show that the research is credible and practical. The model improves the overall safety performance of cloud manufacturing systems.