通过软件证实提高传感网络再编程安全可靠性

通过无线信道进行传感节点远程再编程是一种有效的管理和维护传感网络的重要功能。传统的再编程协议未提供任何安全机制,使传感网络不能防御一些很简单的攻击;新的安全再编程协议使用非对称加密机制,需要多的计算和存储开销,不适用于资源受限的无线传感节点。对此,提出了一种基于软件证实技术的无线传感网络再编程安全协议,该协议通过运行在合法节点上的代码证实和基站上的代码影像证实来隐藏对称密钥,并通过从基站向传感节点传递参数r来保证认证的动态性。将该策略与已有的再编程协议MNP集成,模拟实验表明,该策略以比较低的通信成本和较短的延迟提高了再编程的安全可靠性。

Increasing security and reliability of reprogramming for sensor networks with software attestation

The remote reprogramming of sensor nodes through the wireless channel is a very important function for the efficient management and maintenance of sensor networks.Traditional reprogramming protocols do not provide any security scheme,makes the sensor network vulnerable to some kinds of simple attacks;new secure reprogramming protocols uses asymmetric cryptography schemes needed many computational and memory overheads,which may not be acceptable for resource-constrained wireless sensor nodes.A secure protocol based on the software attestation technology for reprogramming of wireless sensor networks is proposed in this paper;it hides a symmetric key with code attestation running on a legitimate node and a base station separately,and has dynamic characteristics through transmitting a parameter r from the base station to the sensor.This protocol is integrated with existing reprogramming protocol MNP.Simulation results show that the proposed protocol increases the security and reliability of reprogramming at lower communication cost and short delay.