International Journal of Computer Science Issues
Data providing services allow query like access to organization's data via web services. The invocation of DP service results in the execution of a query over data sources. In most cases user's queries require the composition of several services. The RDF based query rewriting algorithm is used for DP services composition which has limitation that, it is unable to provide security for a confidential data which is represented in RDF graph. Hence the proposed system will use RDF encryption in which confidential data in a RDF-graph will be encrypted for a set of recipients while all non-sensitive data remain publicly readable.