中文摘要：

针对当前传感器节点的计算能力有限以及云访问控制服务的信任问题，在传感器网络双云场景中，借鉴仲裁游戏模型的思想，提出可验证的云访问控制模型。利用可扩展访问控制标示语言中决策值及策略组合算法的特点，设计针对单条策略及策略集的可验证云访问控制方案，使传感器节点能够以较小的计算代价和传输代价实现复杂的访问控制决策。在AmazonEC2云平台上的实验结果证明，与传统的本地访问控制方案相比，该方案能够以较高的效率保证云访问控制结果的可靠性。

英文摘要：

The computing resource of the sensor node in the Internet of Things is very limited and there are security risks in the cloud. To implement a verifiable cloud access control service for the node in the sensor network, this paper proposes an Extensible Access Control Markup Language（XACML） based verifiable cloud access control scheme according to the Refereed Games（RG） model. Specifically, it firstly designs a verifiable cloud access control model based on the XACML access control model. Furthermore, it designs verifiable cloud access control decision and verification schemes for policy and policy-set based on decision and policy combination algorithm in XACML, in which a high efficient access control with complex access control policy is realizable by the node in sensor network. Compared with the traditional access control scheme, the experiment on Amazon EC2 shows that the verifiable Cloud access control was implemented with much higher efficiency in this scheme.