A Security Realization For Key Exchange In VPN

In allusion to the information security problem, many solutions are bringing up. Among these, the most suitable solution to resolve the network transfer security is security VPN (SVPN) technology. The subject will focus on the reliable method of key exchanging for security VPN. Key exchange is an important part of key management. It deals with the actions of key creation and distribution with a safe way. The way of key exchanging requires that the key can't be modified, and the key must be created in random. Using this method all these can be realized: secret of key exchanging, identity of communication, non-deny of communication and usability of the key. According to the investigation and analysis for all of present key exchanging method, manual key exchange and auto key exchange are two main methods. And then, according as IPSec, the IKE standard was drawn by IETF. This is an effective and reliable method of key exchanging in the aspects of structure design, key storage and error disposing. It will be realized by computer language and be confirmed by the experiment. There were many key exchanging ways age, but all of these can't realize good intercommunicate. As the international standard, IKE protocol defines only some frame works. And moreover, there are some special requirements in our Commercial-crypto filed for secure reason. The method discussed in this article will bring a safe and reliable way of key exchanging. And this method has realized applied purpose highly..