关键词: 开放网络, 信任管理, 信任证, 信任链发现

Abstract: Trust chain discovery algorithm is one of the most crucial components in trust management. However, existing trust chain discovery algorithms do not concern the validity of credentials nor do they divide the trustworthiness of entities to different degrees according to their different behaviors. To address these two problems, a time field-based LOTOV language is introduced, followed with a backward trust chain discovery algorithm. Simulation results show that the proposed algorithm can not only effectively solve credential revocation and update but also refine the behaviors of those dishonest entities.

Key words: open network, trust management, credential, trust chain discovery