一种新的基于ECC的Ad hoc组密钥协商协议

在Ad hoc网络中进行安全的组通信,安全的组密钥协商协议是关键.采用椭圆曲线密码方案(elliptic curve cryptosystems,ECC),提出了一种安全有效的Ad hoc网络组密钥协议,并对其可行性和安全性进行了证明.针对Ad hoc 网络节点有随时加入或离开组的特点,提出有效的具有前向保密与后向保密...

A new Ad hoc group key agreement protocol based on ECC

Secure group key management is a critical issue in secure group communication of ad hoc network. The existing group key management protocols are commentated and a novel efficient group key management protocol is presented in this paper by adopting ellipse curve cryptogram (ECC) scheme. The feasibility and security of our protocol are discussed. Based on the property that external nodes may join a group and internal members may leave the group at any time in ad hoc network, we present an efficient group key renew scheme with the forward and backward secrecy of group key. Compared with the existing group key management protocols, our scheme offers the fairness of group key generation among group members. In addition, as each participant only needs two rounds to generate the group key, the scheme also enjoys low computation complexity and low memory cost. Therefore, it is very suitable for being applied in ad hoc network.