Research On Privacy Disclosure Analysis For Web Services Composition

Web service expands its fields at a high speed thanks to the development of informationtechnology. Consumers of services have to submit some privacy data in the interaction with serviceproviders, which makes it impossible to keep anonymous. Multiple Web services are used to satisfythe increasing business requirements from users by the way of composition and service providersneed to disclose part of privacy data to the third party in the process. However, it would make a worldof privacy dangers if privacy data is misused by service provider and the third party. It is an crucialproblem to minimize the disclosure of the users’ privacy while satisfying the business requirements.The approach to protect privacy of web service consumers has become a hot spot in the field ofservice computing. Most of the researches are relevant to verify Web service privacy properties andpolicies. However, it is short of research on privacy disclosure analysis for Web services composition.Aiming at improving the existing work, the major work is listed as follows.First of all, privacy policy description and privacy policy enforcement model are both proposedin terms of privacy problem of assembling model.Secondly, an approach for modeling privacy disclosure for Web services composition based onproposed privacy hypergraph and the method to transform are put forward.Thirdly, an approach for privacy disclosure analysis of Web services composition is proposed.And the algorithm which can get the minimal privacy disclosure is also given based on the model ofprivacy hypergraph. It can be used to get the composition that discloses minimal privacy.Finally, a prototype tool is designed and implemented to obtain the composition that disclosesminimal privacy.