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由于无线传感器网络中经常出现节点加入或离开网络的情况,所以需要建立一种安全高效的群组密钥管理系统来保证无线传感器网络中群组通信的安全性.提出了一种基于密钥树和中国剩余定理的分级群组密钥管理方案.有sensor节点加入,先向新成员发送二级群组密钥,可参与一些不太敏感的数据的传送;待新成员获得GCKS的信任之后,则向其发送群组密钥,从而可参与有关机密信息的会话.节点离开时,通过利用完全子集方法将剩余成员进行分割,提出的方案可以利用中国剩余定理对群组密钥进行安全的更新.证明方案满足正确性、群组密钥保密性、前向保密性和后向保密性等安全性质.性能分析表明,此方案适合应用于无线传感器网络环境.
Because nodes often join or leave the network in wireless sensor networks, a secure and efficient group key management system needs to be established to ensure the security of group communication in wireless sensor networks.This paper proposes a new method based on key tree And China’s remaining theorem hierarchical group key management scheme.With the sensor node to join, send the second-level group key to the new member first, can participate in the transfer of some less sensitive data; After the new member gains the trust of GCKS, The group key is sent to participate in the conversation about confidential information.When the node leaves, by using the complete subsection method to split the remaining members, the proposed scheme can use the China Remainder Theorem to secure the group key Update.The proof scheme meets the security nature of correctness, group key confidentiality, forward confidentiality and backward confidentiality.Performance analysis shows that this scheme is suitable for wireless sensor network environment.