With the accelerate implementation of information and the rapid development of e-commerce and e-government, the network security is of great significance. Now people are more concerned about how to ensure working at a trusted network environment. In

With the burst of a Wanna decryptor [1] in the middle of 2017, secure communication within a network [2] has again triggered the considerable attention. Meanwhile, many feasible methods have been proposed to enhance the data security and it is also