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Trustworthy Assurance of Service Interoperation in Cloud Environment

ISSN号：1000-9000
期刊名称：《计算机科学技术学报：英文版》
时间：0
分类：TP393.1[自动化与计算机技术—计算机应用技术;自动化与计算机技术—计算机科学与技术] P208[天文地球—地图制图学与地理信息工程;天文地球—测绘科学与技术]
作者机构：[1]State Key Laboratory of Software Engineering, Wuhan University, Wuhan 430072, PRC, [2]School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PRC, [3]School of Computer Science and Engineering, Hunan University of Science and Technology, Xiangtan 411201, PRC
相关基金：This work was supported by National Basic Research Program of China （973 Program）（No. 2007CB310801）, National Natural Science Foundation of China （No. 60873083, No.60803025, No. 60970017, No. 60903034, No. 60873225）, Natural Science Foundation of Hubei Province for Distinguished Young Scholars （No. 2008CDB351）, Natural Science Foundation of Hubei Province （No. 2008ABA358, No. 2008ABA379）, Research Fund for the Doctoral Program of Higher Education of China （No. 20070486065）, and Open Foundation of State Key Laboratory of Software Engineering （No. SKLSE20080718）.

作者： Bing Li[1], Bu-Qing Cao[1,3], Kun-Mei Wen[2], Rui-Xuan Li[2]

关键词：服务质量, 计算环境, 互操作, 信任模型, 服务发现, 信任管理, QoS, 服务提供者, Quality of service （QoS）, trust, service discovery, service interoperation, service invocation success-rate, cloud computing.

中文摘要：

云计算能被服务互操作认识到，它的本质是通过网络提供云服务。在云环境保证服务互操作的可信赖是一个很重要的问题的有效方法的开发。云安全的本质是信任和信任管理。与信任模型，一起的服务(QoS ) 的联合质量这份报纸构造由起始的信任价值，直接信任价值，和服务的推荐信任价值组成的一个 QoS 知道、量的信任模型，做云服务的预备，发现，和聚集可靠。因此，它能在云环境保证在用户和服务之间或在服务之中的服务互操作的可信赖。基于这个模型，同时，服务发现方法基于 QoS 知道、量的信任模型(TQoS-WSD ) 被建议，它在服务 requestor，服务供应商和服务 recommender，和用户之中做一种稳固的信任关系能发现评估价值更高是其总数的可靠服务。把方法比作基于 QoS 的服务发现(QoS-WSD ) ，它被实验为 TQoS-WSD 方法证明服务发现的更多的精确结果将被服务 requestor 完成，当合理时间费用被增加时。同时， TQoS-WSD 方法强烈由不能信任的 QoS 值抵抗服务发现的效果并且改进服务调用成功率并且因此保证服务互操作的可信赖。

英文摘要：

Cloud computing can be realized by service interoperation and its essence is to provide cloud services through network. The development of effective methods to assure the trustworthiness of service interoperation in cloud environment is a very important problem. The essence of cloud security is trust and trust management. Combining quality of service （QoS） with trust model, this paper constructs a QoS-aware and quantitative trust-model that consists of initial trust value, direct trust value, and recommendatory trust value of service, making the provision, discovery, and aggregation of cloud services trustworthy. Hence, it can assure trustworthiness of service interoperation between users and services or among services in cloud environment. At the same time, based on this model, service discovery method based on QoS-aware and quantitative trust-model （TQoS-WSD） is proposed, which makes a solid trust relationship among service requestor, service provider and service recommender, and users can find trustworthy service whose total evaluation value is higher. Corapared to QoS-based service discovery （QoS-WSD） method, it is proved by the experiment for TQoS-WSD method that more accurate result of service discovery will be achieved by service requestor, while reasonable time cost is increased. Meanwhile, TQoS-WSD method strongly resists the effect of service discovery by untrustworthy QoS values and improves service invocation success-rate and thus assures trustworthiness of services interoperation.

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