It is now feasible to host basic web services on a smart phone due to the advances in wireless devices and mobile communication technologies. The market capture of mobile web services also has increased significantly, in the past years. While the applications are quite welcoming, the ability to provide secure and reliable communication in the vulnerable and volatile mobile ad-hoc topologies is vastly becoming necessary. Even though a lot of standardized security specifications like WS-Security, SAML exist for web services in the wired networks, not much has been analyzed and standardized in the wireless environments. In this paper we give our analysis of adapting some of the security standards, especially WS-Security to the cellular domain, with performance statistics. The performance latencies are obtained and analyzed while observing the performance and quality of service of our Mobile Host.

From the view-point of information systems engineering, the Internet has lead the evolution from static content to Web Services. Web Services are software components that can be accessed over the Internet using well established web mechanisms, XML-based open standards and transport protocols such as SOAP (W3C, 2003) and HTTP. Public interfaces of Web Services are defined and described using Web Service Description Language (WSDL) (Christensen, 2001), regardless of their platforms, implementation details. Web Services have wide range of applications and primarily used for integration of different organizations. The biggest advantage of Web Services lies in their simplicity in expression, communication and servicing. The componentized architecture of Web Services also makes them reusable, thereby reducing the development time and costs. (Booth, 2004) Simultaneously, the high-end mobile phones and PDAs are becoming pervasive and are being used in wide range of applications like location based services, banking services, ubiquitous computing etc. The higher data transmission rates achieved in wireless domains with 3G (3GPP, 2006) and 4G (Thomas, 1999) technologies also boosted this growth in the cellular market. The situation brings out a large scope and demand for software applications for such high-end mobile devices. To meet this demand of the cellular domain and to reap the benefits of the fast growing web services domain and standards, the scope of the mobile terminals as both web services clients and providers is being observed. While mobile web service clients are common these days, we have studied the scope of mobile web service provisioning. The details of our Mobile Host and its performance analysis are

While service delivery and management from Mobile Host is technically feasible, the ability to provide secure and reliable communication in the vulnerable and volatile mobile ad-hoc topologies vastly becomes necessary. Moreover with the easily readable mobile web services, the complexity to realize security increases further. For the traditional wired networks and web services, a lot of standardized security specifications, protocols and implementations like WS-Security (Lawrence, 2004), SAML (Mishra, 2005) etc., exist, but not much has been explored and standardized in wireless environments. Some of the reasons for this poor state might be the lack of active commercial data applications due to the limited resource capabilities of the mobile terminals

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