无线传感器网络重编程安全认证机制研究

文章分析了无线传感器网络重编程的安全性需求,研究了基于公钥密码的无线重编程安全认证机制;根据无线重编程协议的特性将这些安全认证机制分为更新代码认证和控制消息认证2个层面,在各自层面上分析和比较了它们的性能和优缺点;针对现有更新代码认证机制的缺陷提出了一种细粒度、低存储开销、可容忍包乱序的安全认证方案;最后对控制消息认证机制中存在的计算开销较大的问题进行了改进.

A New Security Authentification Mechanism for Reprogramming Wireless Sensor Networks (WSNs)

Aim.The introduction of the full paper believes that the current security authentification mechanisms have many defects and discusses them.We propose a new hash-chain based mechanism,which we believe can suppress some of these defects.Section 1 discusses in some detail the defects in the current security authentication mechanisms at the "updating code" level.Section 2 discusses in some detail the defects in the current security authentication mechanisms at the "control messages" level.Subsection 3.1,with the help of Fig.4,explains in some detail the improvements of our new security authentification mechanism at the "updating code" level.Subsection 3.2 explains in some detail the improvements of our new security authentification mechanism at the "control messages" level.The core of the improvements of our new security authentification mechanism consists of: ( 1 ) that we add the hash code of each packet to the one with the previous page to avoid the lingering certification caused by disorder packets; (2) that,keeping in mind maintaining the security of certification,we remove the certification on advertisements which account for 10.26% of the total messages.The improvements of our new security authentification mechanism for reprogramming WSNs does suppress some of the defects in the current security authentification mechanisms,thus enhancing the reliability of the certification at the "updating code" level and reducing the computing overhead of the certification at the "control messages" level.