关键词: 无线传感器技术, 安全认证, 分布式认证, 多项式

Abstract: The security mechanism of multiple distributed authentication has been studied. In view of the existing problems of the distributed authentication secret sharing, three improvements are proposed：the shared secret to consider polynomial modulo function is generated with password; authentication by adding a base station authorized third party trust model instead of processing center to certification, so as to reduce the hop node authentication process; each node is assigned a parity identifier to select nodes involved in certification and reduce the total network traffic. The simulation experiment results are given between the improved algorithm and the existing security mechanisms. The results show that the amount of communication between nodes in half and it improves the security of wireless sensor network node authentication.

Key words: wireless sensor technology, security authentication, distributed authentication, polynomial