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Code stream encryption negotiation method and device and conference terminal

A conference terminal and encryption algorithm technology, which is applied in the code stream encryption negotiation and conference terminal field, can solve problems such as audio and video code stream eavesdropping, achieve the effect of ensuring security and increasing the difficulty of cracking

Active Publication Date: 2018-11-16
SUZHOU KEDA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a code stream encryption negotiation method to solve the problem in the prior art that only encrypting the code stream can easily lead to eavesdropping on audio and video code streams

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  • Code stream encryption negotiation method and device and conference terminal
  • Code stream encryption negotiation method and device and conference terminal
  • Code stream encryption negotiation method and device and conference terminal

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Embodiment Construction

[0078] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0079] The present invention provides a whole set of encryption negotiation mechanism based on SIP, realizes the encryption of SIP audio and video code streams, and ensures the safe transmission of audio and video code streams. Specifically, in the following description, a complete set of key exchange schemes designed to implement code stream encryption are d...

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Abstract

The invention discloses a code stream encryption negotiation method and device and a conference terminal, and the method comprises the steps: sending a first session initialization protocol signal toa second conference terminal; receiving a second session initiation protocol signal that is sent by the second conference terminal according to the first session initiation protocol signal; sending athird session initialization protocol signal to the second conference terminal. Before a code stream is transmitted, the encryption information supported by both parties in a video conference is negotiated based on the SIP protocol, and the encryption information can be randomly selected in each encryption negotiation, and a code stream key is encrypted by using the negotiated encryption information thereby improving the difficulty of cracking. In the process of code stream transmission, the code stream is encrypted by using the negotiated code stream key and the encryption information, so that the problem of audio and video code stream eavesdropping caused by a condition that the key negotiation of SRTP is enabled to be equivalent to plaintext transmission is solved when only SRTP is employed for encryption of the code stream.

Description

technical field [0001] The invention relates to the technical field of video conferencing, in particular to a code stream encryption negotiation method, device and conference terminal. Background technique [0002] In a video conferencing system, audio and video streams need to be transmitted in real time. In the prior art, audio and video streams are usually transmitted in real time based on the Real-time Transport Protocol (RTP), which specifies the packaging format of each frame of data in detail, which can meet most application requirements . In addition, the Session Initiation Protocol (SIP for short) is used to establish, modify and terminate a session with one or more conference terminals, and plays an increasingly prominent role in video conferences. [0003] However, with the increasing importance of network information security, the application requirements for encrypting audio and video streams in video conferencing systems have become inevitable. At this time,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/2347H04N21/233H04N21/4408H04N21/439H04N21/6437H04N21/643H04N7/15H04L9/08H04L29/06
CPCH04L9/0825H04L9/0838H04L65/403H04N7/15H04N21/233H04N21/2347H04N21/439H04N21/4408H04N21/643H04N21/6437H04L65/1104
Inventor 刘娜韦国华胡小鹏
Owner SUZHOU KEDA TECH