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Method and system for encrypting multicast data

A multicast data and multicast group technology, applied in the field of communication, can solve problems such as increasing network construction costs and operations, affecting overall data transmission efficiency, etc.

Active Publication Date: 2016-04-20
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Question 1: It is necessary to add additional server equipment for identity verification and identification or data encryption and decryption, which needs to increase the cost of network construction and operation; The process of decryption and encryption is required, which affects the overall transmission efficiency of data

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  • Method and system for encrypting multicast data
  • Method and system for encrypting multicast data
  • Method and system for encrypting multicast data

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Embodiment Construction

[0024] figure 1 A schematic diagram of a multicast system for encrypting multicast data provided by an embodiment of the present invention is shown. Such as figure 1 As shown, the architecture of the multicast network is the same as that of the existing multicast network, and the election mechanism of the C-BSR and the election mechanism of the C-RP in this embodiment are the same as those of the existing multicast technology. The embodiment of the present invention implements encryption / decryption transmission of multicast data without changing the existing multicast network architecture and without adding any server. It should be noted that all routers in the existing multicast network are PIM (Protocol Independent Multicast) routers, and DR (Designated Router, DesignatedRouter), RP (Rendezvous Router, RendezvousPoint) and BSR (Bootstrap Router, BootStrapRouter and so on are the corresponding state role names in the PIM router.

[0025] when figure 1 After the BSR electi...

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Abstract

The invention provides a method and a system for encrypting broadcast data, wherein the method comprises: a DR (designated router) periodically sends encryption request information of a specific broadcast group to a BSR (bootstrap router); the BSR determines the specific broadcast group required to be encrypted according to the encryption request information, and broadcasts the bootstrap massages of an update state; a PIM (protocol independent broadcast) router receives the bootstrap massages of the update state, records the encryption of the specific broadcast group, and generates a normal BSR and RP (rendezvous point) list; the DR receives the broadcast data, determines that the received broadcast data belongs to the specific broadcast group, inquires an encryption key, encrypts the received broadcast data, and forwards the encrypted broadcast data to the PIM router at the downstream; and the PIM router receives the encrypted broadcast data, determines that a receiver exists, inquires the encryption key, decodes the received broadcast data, and copies and forwards the encrypted broadcast data to the receiver.

Description

technical field [0001] The present invention relates to communication technology, in particular to multicast communication technology, in particular to a method and system for encrypting multicast data. Background technique [0002] In applications such as video-on-demand, teleconferencing, and IPTV, the support of multicast protocols, such as PIM multicast protocols, is required. The PIM protocol can be divided into PIMDM protocol (Protocol Independent Multicast-DenseMode, Protocol Independent Multicast-Dense Mode) and PIMSM protocol (Protocol Independent Multicast-Sparse Mode, Protocol Independent Multicast-Sparse Mode). [0003] Data encryption technology is mainly divided into data transmission encryption and data storage encryption. Data transmission encryption technology mainly encrypts the data stream in transmission, and there are three commonly used methods: link encryption, node encryption and end-to-end encryption. [0004] Link encryption means that the transmi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
Inventor 廖以顺林日锋
Owner NEW H3C TECH CO LTD