Design And Implement Of Safety Router Based On Permutation Code

With the development of the computer network and all kinds of electronic service trade, people will need higher security of the data via net. How to guarantee the info and the security of network itself, especially the commerce info that is exchanged in a open and mutual join condition, how to assure the info not to be filched or juggled when depositing and transferring, is already a focus issue to enterprise and the people.Only one day, a Slammer worm, which its size is just 376 bytes, swept all the Routers and switches in Korea and paralyzed Korea's network. Someone ever accounted that if the Slammer could spread more quickly, you would find it all over the world and global backbone Routers would follow the Korea's backbone Routers and nothing could do it. The cases are not alarmism, in fact, if people lose sight of protecting the network devices, such as Router, so that it could become the most weakness node and it could be the attacked aim. The Router, as a relay station, plays an important role in the network, its security decide the whole network's security, therefore, it usually be attacked viciously. How to transfer info more quickly and securely via network is hot subject on Router. In order to make Router to transmit the data integrality, in good time and safely, many Router manufacturers begin to boost up Router's secure mechanism, and then all kinds of secure Router or carrying out secure Router function become appear.The stress of this paper is to make use of a kind of new encryption algorithm with higher speed and better keeping secret — Permutation Code to build a more secure encrypt Router mechanism. In this paper, I setup a net-driver with encrypt function in two servers (simulated Router), which play a Router's role in the LAN, the net-driver could hold up IP data and encrypt or decrypt the data, thus implement multi-net security Router. During study the dissertation, it is not easy for me to find a way tocombine the Permutation Code to the Router effective and reasonable. After many tests, I found a network driver named GNetDriver, which accord with Windows NDIS, and be the same with between the physics layer and the application layer. The most important is, GNetDriver can hold out the Permutation Code, in the end, the encapsulated driver will be installed in simulated Router. The simulated Router can implement transfer in multi-net and encrypt/decrypt IP data.This paper brings forward a solution to the problem of inefficient Safe modular. At the same time, this project purpose is the network core product and it would have better practicably value and applied future.