WSN中基于多项式的安全密钥建立方案

针对分层WSN节点的更新，使用二元对称多项式，提出一种安全的建立通信双方会话密钥方案。该方案可保证传输消息的秘密性和完整性，能有效地抵御攻击者对消息的非法篡改、替换和重放。此外，该方案支持通信双方更新会话密钥和增加对节点身份的认证，防止非法节点的欺骗攻击。通过分析可知，该方案和现有方案相比，具有更高的安全性，以及成本和效率的合理性。

Polynomial-based Secure Key-establishment Scheme in Wireless Sensor Network

This paper puts forward a secure scheme to establish the session key between communication parties by use of binary symmetric polynomials, considering the hierarchical Wireless Sensor Networks（WSN） update, This scheme can guarantee the confidentiality and integrity of the message transmission, and can effectively resist the attacker＇s illegal tampering, replacement and replay to the message. Moreover, this scheme supports the session key update between communication parties and can enhance the authentication to the node identity so as to prevent the spoofing attack of the illegal nodes. Analysis shows that this scheme is more secure than others, and has reasonableness of cost and efficiency.