Abstract:

In the applications of unattended wireless sensor networks（UWSN），sensor nodes always are deployed in hostile area and are difficult to communicate with each other. Besides，the network user need abstract sensed data not real time data in some scene. Thus the sensor nodes need to store the sensed data until receiving the request of data. However，the distributed architecture makes it challenging to build a secure and efficient data storage system due to the resource-constrained nature of sensor node. Besides，due to the lack of physical protection，WBAN are vulnerable to attacks when deployed in hostile environments. In order to address the challenges，we propose a novel secure and efficient data storage scheme with dynamic integrity checking in this paper. Based on the policies of multiple secret sharing，we first propose secure and efficient patient-related data storage and access scheme for UWSN. Furthermore，to dynamically check the integrity of the distributed data shares，we then propose an efficient data integrity verification scheme based on orthonormal vectors. Finally，the security and performance analysis shows that the proposed scheme is secure and practical for UWSN.

Key words: distributed data storage, data security, unattended wireless sensor network