要达到网络通信无处不在目的,必须研究Ad hoc网络。在Ad hoc网络中,要保证Ad hoc网络各节点间的安全通信,必须对组成网络的各节点身份进行认证。对近几年Ad hoc网络安全研究中的组成网络各节点身份进行认证的机制进行了综述,归纳出基于对称密码算法和非对称密码算法的安全认证机制,并对这些机制进行评估。 To achieve the purpose of network communication everywhere, we must study Ad hoc network. In Ad hoc networks, to ensure secure communication between nodes in Ad hoc networks, the identity of each node that constitutes the network must be authenticated. In this paper, the mechanism of authentication of each node in the network is summarized in recent years. The security authentication mechanisms based on symmetric and asymmetric cryptography algorithms are summarized and evaluated.