Institute of Electrical & Electronic Engineers
A web service is a software system designed to support interoperable application-to-application interactions over the Internet. Web services are based on a set of XML standards, such as Web Services Description Language (WSDL), Simple Object Access Protocol (SOAP) and Universal Description, Discovery and Integration (UDDI). Recently, there has been a growing interest in web service composition, and some languages (e.g., WSBPEL, BPML) for modeling the composition have been proposed. In this paper, the authors focus on security constraints of Web service composition, which have not been deeply investigated so far.