Mesh network is a new type of wireless network, which combined by WLAN and Ad-hoc, and it has great potentialities. But the security problems restrict the development of Mesh. This paper analyses the advantages and disadvantages of CPK and IBC, and finds that CPK is suitable to access for large-node. In order to solve the problem of authentication for wireless mesh network, this paper carried out a new protocol to deal with efficiently and safely access of Mesh, by taking CPK into Mesh access authentication. And the two-way authentication was achieved, by using CPK algorithm, public key system, random numbers and time stamp. According to the protocol, the process of authentication is simplified, and the delay is also reduced, meanwhile a new authentication method is provided to mass node access. In the end, security analysis and simulation proved the effectiveness and security of this method.
