移动对等传感器网络的基于属性加密的组密钥管理协议

A group key management protocol using attribute-based encryption for mobile peer-to-peer wireless sensor networks

提出了一个具有较小解密代价的密文策略属性基加密(CP-ABE)方案,并在标准模型下证明了其安全性。进而提出一个适用于移动对等传感器网络(MP2PWSN)的基于CP-ABE的组密钥管理协议。在该协议下,移动节点和簇头节点首先完成簇间组密钥分发,然后由簇头进行簇内组密钥分发。该协议满足后向安全性,支持节点动态加入,退出以及节点撤销,还能实现细粒度的传感器数据访问控制和隐私保护。仿真结果表明,该协议由于采用低解密代价的CP-ABE算法,传感器节点的能耗不随属性数量的增多而显著增加,因此能够较好地满足MP2PWSN的匿名组通信安全需求。

A new ciphertext-policy attribute-based encryption （CP-ABE） scheme with lower decryption cost was presen- ted, and it was proved secure in a stand model. Then a group key management protocol based on CP-ABE was pro- posed for mobile peer-to-peer wireless sensor networks （MP2PWSN）. Under this protocol, mobile nodes and clus- ter heads firstly complete the inter-cluster group key distribution, and then a cluster head distributes the group key within its cluster. This protocol satisfies the backward security, permits node dynamically joining, leaving and be- ing revoked, and also implements the control of fine-grained sensor data access and privacy preserving. The simula- tion results show that sensors＇ energy consumption does not greatly increase with the number of attributes because the protocol uses a CP-ABE algorithm with lower decryption cost. Therefore, this protocol can meet the security re- quirements of anonymous group communication for MP2PWSN.