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为了提高合法用户在无线传感器网络(wireless sensor networks,WSNs)中访问节点数据时的安全性,基于已有的动态认证协议和Das协议,提出了一种混合Das协议的WSNs身份验证协议(MDas)。该协议具有动态认证协议通过单向散列函数和异或运算来实现加密/解密的性能,也具有Das协议采用唯一的智能卡进行身份验证的特点。相比Das协议和动态认证协议,MDas协议增加了密码变更阶段,并且在协议的验证阶段增加了登录节点与传感器节点之间的互相验证操作,加强了身份验证的安全性。安全特性对比和计算成本分析结果表明,MDas协议可以抵御伪装网关重放攻击、伪装登陆节点攻击以及蛮力攻击,具有更好的安全性能。
In order to improve the security of legitimate users accessing node data in wireless sensor networks (WSNs), a WSNs authentication protocol (MDas) based on Das protocol is proposed based on the existing dynamic authentication protocols and Das protocols. . The protocol has the performance of dynamic authentication protocol through one-way hash function and XOR operation to achieve encryption / decryption performance, but also has the Das protocol using a unique smart card authentication features. Compared with the Das protocol and the dynamic authentication protocol, the MDas protocol adds a password changing phase and adds mutual authentication between the login node and the sensor node during the verification phase of the protocol, which enhances the security of authentication. Comparison of Security Features and Computational Cost Analysis Results show that the MDas protocol can defend against camouflage gateway replay attacks, camouflage login node attacks and brute force attacks, and has better security performance.