The Design And Implementation Of A VoIP Desktop Encryption Gateway

As the developing of the network technology, VoIP technology driven by the market is also continuing to mature and is becoming one of the most important technologies in next generation network. VoIP can provide voice, video and other multimedia communications and it also can offer other intelligence services. So, it has been widely applied. However, due to the openness of IP network and the limitation of VoIP communication protocol, the issues VoIP communication system’s Security are very prominent.Based on VoIP network structure we design a security solution and a VoIP application gateway for VoIP system which we achieve by using the Embedded Development. In this paper, we first introduce the system architecture and protocol standards for VoIP and analyze the security issues that exist in VoIP systems and proposed security policy to the problem; we then propose an application gateway system solutions for VoIP security and design a key agreement based on self-certified public key and a security solution based SM4data encryption algorithm; finally, we design a concierge-style VoIP Desktop Encryption Gateway which is achieved and tested through Embedded Development. Analysis and conclusions prove that the scheme can effectively solve the security problems that exist in VoIP systems and can resist many kinds of security threats in VoIP systems.