VoIP service security assurance method and system based on scale variable window mechanism

Abstract

The invention discloses a VoIP service security assurance method and system based on a scale variable window mechanism. The method comprises the following steps: a voice sending end (sender) launches conversation request to a voice receiving end (receiver), and builds safety conversation after bothway verification through an agent end, the sender sends the voice, which is encrypted through the encryption module, to the receiver, the receiver decrypts the encrypted voice and sends the voice to a voice quality assurance module, and the voice display time is adjusted through the caching technology based on the scale variable window, so as to guarantee the display quality of the voice; the system comprises the voice sending end (sender), a voice sending end proxy server (proxy 1), a voice receiving end proxy server (proxy 2), the voice receiving end (receiver) and a private key generator; the voice sending end (sender) comprises a safety SIP conversation module (SSM) and a voice encryption / decryption module (VEM), the voice receiving end (receiver) comprises an SIP conversation module (SSM), a voice encryption / decryption module (VEM) and a voice quality guarantee module (QEM); the method and system can effectively improve VoIP communication safety and communication quality.

Description

technical field [0001] The present invention relates to the technical field of communication network information security, and mainly relates to a secure session technology based on identity signature and verification and a voice encryption technology based on stream ciphers. While ensuring communication security, the self-adaptive caching technology based on variable-scale windows is used to ensure communication voice security. quality. Background technique [0002] VoIP is a new type of communication technology that uses the Internet to carry voice data. It adopts various technologies such as compression coding, packaging and grouping, routing transmission, unpacking and decoding for voice to realize voice communication on the IP network or the Internet. Due to the characteristics of the Internet itself, VoIP Compared with the traditional telephone network, transmitting voice is cheaper and easier to expand, but the VoIP protocol itself is not perfect, and VoIP faces many ...

AI Technical Summary

Problems solved by technology

The security threats faced by SIP mainly come from the inability of the SIP system to provide two-way identity authentication between entities and the integrity check of SIP messages.

Registration hijacking and message tampering attacks are due to the fact that SIP messages cannot be detected in time after being illegally tampered with, while fake server attacks and teardown attacks are due to the inability to effectively perform two-way identity verification between communication entities;

[0005] (2) VoIP communication system damages voice quality;

[0007] (3) VoIP communication system may cause loss and delayed arrival of voice packets

[0008] Due to the instability and dynamic changes of the network, the loss and delayed arrival of voice packets may be caused, which seriously affects the communication quality

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