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Media data encryption method based on RTP in VoIP communication network

A media data and communication network technology, applied in the field of communication, can solve problems such as difficulty in implementation, and achieve the effect of low cost, high efficiency, and user-insensitive network transformation

Active Publication Date: 2019-04-23
XINGTANG TELECOMM TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned analysis, the present invention aims to provide a method for encrypting media data based on RTP in a VoIP communication network, so as to solve the need for close cooperation with the signaling plane for encrypting and protecting media data carried on RTP by VoIP call technology in the prior art and problems that are difficult to implement in a complex network environment

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  • Media data encryption method based on RTP in VoIP communication network
  • Media data encryption method based on RTP in VoIP communication network

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Embodiment Construction

[0021] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.

[0022] Acronyms and key term definitions

[0023] SD: Service Divergence

[0024] SIP: Session Initiation Protocol

[0025] RTP: Real-time Transport Protocol

[0026] REU: RTP Encryption Unit

[0027] E side: External side

[0028] T side: Tunnel side

[0029] FID: Flow ID, the RTP flow identifier on the E side.

[0030] RID: REU ID, REU device identification.

[0031] TID: Tunnel ID, channel identifier, a channel is formed between two REUs.

[0032] The principle of the technical idea of ​​the embodiment of the present invention is: on the RTP channel that needs to encrypt the media i...

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Abstract

The invention relates to a media data encryption method based on an RTP in a VoIP communication network, and belongs to the technical field of communication. The method comprises the following steps that SD_A receives an RTP packet and forwards the RTP packet to REU_A; after the REU_A receives the RTP packet, if the REU_A does not find a corresponding TID through FID_A, the REU_A initiates a negotiation request to REU_B; after the REU_B receives the negotiation request, the REU_B completes channel negotiation with the REU_A through the negotiation data, establishes a corresponding channel TIDof the REU_A and the REU_B, and binds the FID_A with the channel TID; and the REU_A finds the corresponding TID through the FID_A, carries out RTP load encryption, and returns the encrypted RTP to theSD_A. According to the method, the media data borne on the RTP can be encrypted and protected no matter what communication protocol is adopted by a signaling plane of the VoIP and no matter encryption equipment is deployed at any position of a communication link.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an RTP-based media data encryption method in a VoIP communication network. Background technique [0002] In the construction of traditional communication systems, the data system and the voice system are usually independent of each other. The data system generally adopts an IP-based system, and the voice system adopts a program-controlled switching system. This system leads to complicated network topology, high construction cost and inconvenient use and maintenance. The recently developed Voice Over IP (VoIP: Voice Over IP) technology integrates voice communication into the data transmission network, realizes the transmission of voice and data information on the same network, and can overcome many problems of traditional communication systems. Adopting VoIP voice communication technology includes technologies based on SIP (Session Initiation Protocol) softswitch, RTP (Real...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04M7/00
CPCH04L63/0428H04M7/0078H04L65/65
Inventor 叶琅韩雪松贾云鹤高丹
Owner XINGTANG TELECOMM TECH CO LTD
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