Trust evaluation method suitable for wireless sensor network

The invention discloses a trust evaluation method suitable for a wireless sensor network, which is characterized in that from the angles of trust value accuracy and attack behavior reflection, a multi-dimensional trust evaluation factor selection scheme is summarized, a credible relationship is described more comprehensively, and credibility measurement is assisted. A feedback information fusion algorithm based on an objective information entropy theory is adopted to realize subjective weighted calculation of trust factors, and malicious feedback can be effectively dealt with. And trust is evaluated by using the reliability, so that the influence of unreliable data on trust calculation is reduced. Risk control is adopted to quantify network risks in trust assessment. According to the method, the credibility of the nodes can be reflected more truly, malicious recommendation or outdated recommendation is filtered more accurately, malicious nodes can be sensed in time, and potential safety hazards in a network a