¡¡Chinese Journal of Computers   Full Text
  TitleA Capability Enhanced Trust Evaluation Model for Web Services
  AuthorsLI Hai-Hua1),2) DU Xiao-Yong1),2) TIAN Xuan1),2),3)
  Address1)(Key Laboratory of Data Engineering and Knowledge Engineering (Renmin University of China) of Ministry of Education, Beijing 100872)
2)(School of Information, Renmin University of China, Beijing 100872)
3)(School of Information Science and Technology, Beijing Forestry University, Beijing 100083)
  Year2008
  IssueNo.8(1471¡ª1477)
  Abstract &
  Background 		Abstract In open environment, an effective trust mechanism should be built to ensure transaction safety. But current trust evaluation approaches solely based on the certificate or feedback are inaccurate and ineffective. Thus, referring to the social trust models, this paper presents a capability enhanced method to improve the accuracy of evaluating trustworthiness. Based on it, this paper also designs a trust evaluation model ServTrust that naturally provides a solution to the trust problem. Compared with current feedback based approaches, simulation experimental results show the effectiveness of the proposed model in trust evaluating.
Keywords trust evaluation model; capability; Web service; degree of trust; security
Background This work is supported by the National Natural Science Foundation of China under grant Nos.60496325, 60573092.
One important goal of these programs is to build an effective trust mechanism, which can cope with Web services transaction safety. However, only a small amount of work has been carried out on trust management for Web services, mainly including to compute the trustworthiness from security aspect, e.g., using CA(Certificate Authority)-based PKI(Public Key Infrastructure) technologies. But this kind of approach is often inaccurate and ineffective, since it just ensures unique identification for users or protects against loss of user data. Besides, the potential that the certificate was stolen or lost also increases the transaction risks. In other distributed environments like Peer-to-Peer networks and Grids, feedback based approaches are also inaccurate due to feedback inner limitations.
In this scenario, by referring to the social trust model, the authors design a trust evaluation model called ServTrust, and then on this model the authors present a capability enhanced method, which improves the accuracy of evaluating trustworthiness compared with feedback based approaches.