基于可信计算的Web服务调用关键路径研究-计算机工程与应用.PDF

基于可信计算的Web服务调用关键路径研究-计算机工程与应用.PDF

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基于可信计算的Web服务调用关键路径研究-计算机工程与应用

230 2016 ,52(3 ) Computer Engineering and Applications 计算机工程与应用 基于可信计算的Web 服务调用关键路径研究 马 亮,钱雪忠 MA Liang, QIAN Xuezhong 江南大学 物联网工程学院,江苏 无锡 214122 School of Internet of Things Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China MA Liang, QIAN Xuezhong. Research on critical path of Web service call based on trusted computing. Computer Engineering and Applications, 2016, 52 (3 ):230-235. Abstract :With the large growth in number of Web services and the demand for registries, there is a growing response time-spending on completing a Web service call of SAP (Systems Applications and Products in data processing)enterprise system, and some of these Web services are untrusted. It seriously hinders the efficiency and quality of service ’s request. This paper introduces the trusted computing, namely the concept of integrity. It combines critical path in engineering, pro- poses a determine algorithm of critical path of a Web service call based on integrity algorithm innovatively. For the Web services that meet the requester ’s demand registered in the UDDI (Universal Description, Discovery and Integration ), it uses integrity algorithm to calculate them, excludes part of the Web services of which integrity values are below requester ’s expectations; it puts the process of a trusted Web service call abstracted into AOE (Activity On Edge )network diagram represented by weighted directed acyclic graph, finds a critical path of a Web service call in the graph by means of critical path determine algorithm. Services on the critical path are all critical services. By using the SAP system client buffer man- agement, business agents and other design patterns, it reduces the call time of critical services to improve the efficiency of the critical path, shortens service call response cycle, further improves the overall efficiency and quality of service calls. It develops the practical system to verify the feasibility and

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