无线传感器网络中分布式存储方案的改进

Improvement in Distributed Data Storage Scheme for Wireless Sensor Networks

本文提出了一种效率较高的无线传感器网络的分布式数据存储方案。该方案将数据D加密成n个秘密共享份分别存储于无线传感器网络的n个存储节点中,只有从这n个存储节点中获得有效秘密共享份数大于或等于预先设定的阀值k(1≤k≤n)时才可重构原始数据;而获得任意小于份的共享份数将得不出原始数据。这样,在加密了数据的同时,又能使得WSN在一部分节点失效(失效的节点数小于k)的情况下仍然能获得原始数据,从而提高了数据的可靠性和容灾性。相对于运用Shamir秘密共享方案,本方案将更有效率。

We present an efficient distributed data storage scheme for wireless sensor networks（WSN）.In this scheme,the data is encrypted and divided into n partitions which are stored in n storage nodes.We can construct the data only when the efficient secret sharing copies got from the nodes are no less than the threshold k（1≤k≤n）.Any less than k partitions show no information about the original data.In addition to data encrypting,we could recreate the original data which improve the reliability in WSN,even if even if there are some failure storage nodes（Number of failure nodes is less than k）.Just like Shamir＇s secret sharing,but it is more space efficient.