传感网时间同步安全的健壮的统计方法

随着时间同步服务的盛行,它越来越成为恶意攻击的目标.鉴别了各种针对同步法则的攻击.因为这些攻击是多种多样的,而且许多难以预见的攻击能够迂回过传统的安全防范策略,所以建立一个针对故意破坏相对健壮的同步法则是个理想的选择.提出了一个能够容忍攻击的健壮的统计方法:它不需要参考节点,而是全网同步于一个虚拟时钟;采用最小中值平方的算法;能够建立成对、簇内和全网的有一定攻击容忍度的同步.

Robust statistical methods for securing wireless synchronization in sensor network

As time synchronization-based services become more prevalent,the synchronization infrastructure will become the target of malicious attacks. A list of attacks that are unique to synchronization algorithms are identified. Since these attacks are diverse in nature,and there may be many unforeseen attacks that can bypass traditional security countermeasures,it is desirable to alter the underlying syn-chronization algorithms to be robust to intentionally corrupted measurements. A robust statistical methods is developed to make syn-chronization attack-tolerant: All nodes aren't synchronization some reference node or sink node,but to a virtual clock; Adopting least median square algorithm; Establishing secure pair-wise,intra-cluster and network-wise attack-tolerant synchronization.