一种基于信任度的自组安全互操作方法

A Trustworthiness Based Ad-Hoc Secure Interoperation Method

提出了基于信任度的自组安全互操作方法,引入信任度描述自治域和用户正确参与协作的概率.自治域对用户的信任度由二者的直接交互经验以及其他域对用户的评价共同决定,满足信任策略要求的用户允许执行角色.用户的恶意历史行为将会降低其信任度,从而影响执行角色的范围.自治域对其他域的信任度由对用户的评价与直接经验的偏差根据加权主要算法反馈更新.自治域的恶意评价影响其推荐信息的可信程度.实验结果表明,该方法能够有效地抵御欺骗和恶意行为.

A trustworthiness-based ad-hoc secure interoperation method is proposed, in which the concept of trustworthiness is introduced to describe the probability of proper collaboration. The trustworthiness of an autonomic domain on a user is decided jointly by direct experiences of interactions and other domains＇ assessments on the user. Only the users who satisfy the requirements of target domains＇ trust policies have the privileges to access entry roles. Records of a user＇s malicious actions will decrease his trustworthiness and then accordingly reduce his privileges. Target domain uses weighted majority algorithm to update recommender＇s trustworthiness, which is reduced by unfair ratings. Experimental results show that this method can effectively resist cheating and malicious actions.