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Broadcast or multicast-based safe communication method and broadcast or multicast-based safe communication device

A technology of secure communication and multicast channel, which is applied in the field of secure communication based on broadcast or multicast and its devices, which can solve problems such as inability to perform secure communication, and achieve the effects of saving communication resources, good business prospects, and low cost

Active Publication Date: 2013-03-13
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem in the prior art that secure communication cannot be performed based on broadcast or multicast, the present invention proposes that the broadcast or multicast server encrypts the content to be sent to generate encrypted content, and then encrypts the encrypted content broadcast or multicast-based content to one or more user equipments; each user equipment receives the encrypted content sent based on broadcast or multicast from the broadcast or multicast server, and encrypts the received encrypted content Decrypt to restore the original unencrypted content

Method used

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  • Broadcast or multicast-based safe communication method and broadcast or multicast-based safe communication device
  • Broadcast or multicast-based safe communication method and broadcast or multicast-based safe communication device

Examples

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no. 1 example

[0019] figure 1 According to a specific embodiment of the present invention, it is a schematic diagram of the network topology structure of the broadcast-based secure communication between the broadcast server 1 and multiple mobile terminals 2a and 2b. Wherein the communication network is a wireless communication network, such as a 3G wireless communication network. Include in this network the broadcast server 1 that uses short message service based on CBS to carry out safe communication, mobile terminal 2a and 2b, also comprise the content providing server (ContentProvider, be called for short CP) 3 that is connected with broadcast server 1, and a not connected operator Mobile terminal 2c contracted for secure communication. The figure omits the short message gateway (Short Message Gateway, SMG for short) or short message service center (Short Message Service Center, SMSC for short) through which the broadcast server 1 and the mobile terminal securely communicate through sho...

no. 2 example

[0039] image 3 According to another specific embodiment of the present invention, it is a schematic diagram of the network topology structure of the broadcast-based secure communication between the broadcast server 1 and multiple mobile terminals 2a and 2b. Among them, in figure 1 On the basis of the shown topology, the communication network also includes a bootstrapping service push function (Bootstrapping Server Function-Push, BSF Push for short) 4 connected to the broadcast server 1, and a home location connected to the bootstrapping service push function 4 Register / Home Subscriber Server (Home Location Register, HLR / Home Subscriber Server, HSS for short) 5 . Wherein, the broadcast server 1 may include two parts, one part is a cell broadcast service system (CBS System) composed of a cell broadcast center (Cell Broadcast Center) and a cell broadcast equipment (Cell Broadcast Equipment), which is used to encrypt the content key The content is broadcast to each mobile termi...

no. 3 example

[0068] figure 1 According to a specific embodiment of the present invention, it is a schematic diagram of the network topology structure of the broadcast-based secure communication between the broadcast server 1 and multiple mobile terminals 2a and 2b. Figure 4 According to yet another specific embodiment of the present invention, it is a block diagram of an apparatus for performing broadcast-based secure communication between the broadcast server 1 and the mobile terminal 2a and its working process. Wherein, the broadcast server 1 includes a device 10 for securely communicating with multiple users or multiple corresponding mobile terminals based on broadcasting, the device 10 includes an encryption processing device 101 and an encrypted content sending device 102, and the encryption processing device 101 further includes content key acquisition means 1011. The mobile terminal 2 a includes a device 20 for securely communicating with the broadcast server 1 based on broadcasti...

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PUM

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Abstract

A method and apparatus for safely communicating based on broadcast or multicast are disclosed. The method comprises the following steps: a broadcast or multicast server encrypts the content to be transmitted in order to generate the encrypted content, and then transmits the encrypted content to each of user equipments based on broadcast or multicast; each of the user equipments receives the encrypted content transmitted based on broadcast or multicast from the broadcast or multicast server, and decrypts the encrypted content which has been received in order to retrieve the original unencrypted content.

Description

technical field [0001] The present invention relates to a communication method and device in a communication network, in particular to a method and a device for safe communication based on broadcast or multicast in a communication network. Background technique [0002] In current communication networks, broadcast or multicast technology has been more and more widely used, and network operators can save a lot of communication resources by communicating with multiple users based on broadcast or multicast. Cell Broadcast Services (CBS for short) in a wireless communication network is a typical example. Operators can use CBS to provide the same service content, such as weather forecast, business news, traffic information, etc., to a large number of users. The CBS may be implemented through a Cell Broadcast Channel (CellBroadcast CHannel, hereinafter referred to as CBCH) in the cell wireless channel. A lot of information provided by CBS is charged or subscribed, that is, the ope...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04W4/06H04W12/02H04W12/04H04W12/03H04W12/041
CPCH04N21/41407H04N21/63345H04L63/0428H04N7/1675H04N21/2347
Inventor 胡志远王楠万志坤骆志刚金晓蓉
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD