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Safe multicast key management method based on MIPv6 (Mobile Internet Protocol version 6)

A technology for multicast key and key management, applied in security devices, electrical components, wireless communication, etc., can solve the problems of increased computation and communication, unable to handle frequent changes of members, etc., to prevent single-point failure , Overcome the slow update speed, reduce the amount of calculation and communication

Inactive Publication Date: 2012-04-11
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this patent application is that it cannot deal with the frequent changes of members. If members frequently join and leave the multicast group, it will cause an increase in the amount of calculation and communication brought about by the update of the multicast key.

Method used

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  • Safe multicast key management method based on MIPv6 (Mobile Internet Protocol version 6)
  • Safe multicast key management method based on MIPv6 (Mobile Internet Protocol version 6)
  • Safe multicast key management method based on MIPv6 (Mobile Internet Protocol version 6)

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Embodiment Construction

[0018] Attached below figure 1 The specific implementation part of the present invention is described in detail:

[0019] Step 1, build a binary tree

[0020] Combine any two key servers to form a key server pair. The embodiment of the present invention is to use N (N is an integer greater than 0) key servers GCKS existing in the network 1 , GCKS 2 ,...,GCKS i ,...,GCKS N , (i∈(1, 2, ..., N-1), N is the number of key servers) random pairwise combination, such as GCKS 1 with GCKS 2 combination, ..., gcks i with GCKS i+1 The combination, ...i∈(1, 2, ..., N-1), generates N / 2 (or N / 2+1, N is an odd number) key server pairs in total.

[0021] In each pair of key servers, a shared key is negotiated using a bilinear method based on elliptic curves, the private key and the shared key are saved, and one is randomly selected as the parent node. In the embodiment of the present invention, the key server pairs GCKS i and GCKS i+1 (i ∈ (1, 2, ..., N-1)) uses a bilinear method b...

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Abstract

The invention discloses a safe multicast key management method based on MIPv6 (Mobile Internet Protocol version 6), which overcomes the problem that the prior art cannot process a frequent change of members under a mobile environment. In the method provided by the invention, a distribution type multicast key management method is adopted and a binary tree is periodically constructed by a key server to generate a center key server; the center key server is responsible for generating group keys and safely distributing the group keys to other key servers; and the group keys are distributed to the members in the group by the other key servers, so that the updating efficiency of the group keys is improved and the communication traffic and the calculation amount are reduced.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to an MIPv6-based security multicast key management method applied in a mobile communication network. The invention can be used for the negotiation and update of the multicast key under the condition that members change dynamically in the mobile environment. Background technique [0002] In the mobile environment, the efficiency and scalability of multicast have been impacted. Multicast not only needs to manage dynamic group members, but also needs to solve the multicast key update problem caused by dynamic changes in group member locations. Therefore, it is necessary to reduce the number of group members. There are mainly the following methods to reduce the cost of updating the broadcast key, improve the efficiency of updating the multicast key, and reduce the calculation and network load of the multicast controller caused by updating the multicast key. [0003] The pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/04H04W12/041H04W12/0431H04W12/0433
Inventor 李小平董庆宽刘彦明白丽娜宋艳波赵蕾黎剑兵方海燕
Owner XIDIAN UNIV
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