| 摘要 |
A method and system for enhancing flow of behavior metrics and evaluating security of a node are described. Instead of sending behavior metrics from a trustee node to a trustor node, the trustor node sends an evaluation function to the trustee node. The trustee node performs security evaluation and sends a result to the trustor node. Alternatively, the trustee node and the trustor node may send behavior metrics and an evaluation function to a trusted broker, respectively. The trusted broker evaluates the security of the trustee node using the evaluation function and the behavior metrics, and sends a security evaluation result to the trustor node and the trustee node. There may be multiple trusted brokers. The behavior metrics may be accumulated by each node as the behavior metrics flow downstream. The nodes may submit behavior metrics to an intermediary periodically and may be accumulated by intermediaries.
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