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Key management method for multicast

A management method and multicast key technology, applied in the field of computer network applications, can solve problems such as difficult implementation and expansion, and achieve the effects of easy implementation and deployment, good communication overhead and security, and good storage overhead

Inactive Publication Date: 2010-04-07
SOUTHEAST UNIV
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Problems solved by technology

This solution provides an infrastructure for secure multicast applications, makes feasible key management possible, has the advantages of controllability, manageability, high security, and strong versatility, and solves the difficulties in traditional solutions. and extended questions

Method used

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  • Key management method for multicast
  • Key management method for multicast
  • Key management method for multicast

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Embodiment Construction

[0058] The present invention provides a complete set of multicast key management schemes, including multicast authentication, Layer 2 access control list ACL configuration, group key generation, key distribution triggered by group member initialization, group membership changes (users obtain / Loss of access to the group) triggers rekeying and rekeying when a timer expires. The invention proposes a multicast authentication method based on the session initialization protocol SIP to authenticate the user's multicast authority; through the simple network management protocol SNMP or the secure socket layer SSL interface, the access switch is configured with a two-layer ACL to realize The message filtering function of the multicast listener discovery protocol MLD has finely controlled the group members from the access switch port. On this basis, the present invention proposes a set of key distribution and update schemes, combined with the multicast listener discovery protocol of the...

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Abstract

The invention provides a key management method for multicast, which is the first to introduce bi-layer equipment control technology for assisting the key management for multicast. The technical scheme comprises a complete set of key management mechanisms for multicast, consisting of multicast authentication, bi-layer access control list ACL deployment and group key distribution and updating. The invention provides a multicast authentication method based on Session Initialization Protocol (SIP) for authenticating multicast rights of users, performs bi-layer ACL deployment on an access switch (AS) by Simple Network Management Protocol (SNMP) or Secure Sockets Layer (SSL) interface, thus realizing message filtering function of Multicast Listener Discovery (MLD) protocol. On the basis, the invention provides a key distributing and updating scheme and solves the problem of key updating in the traditional key management scheme when a member leaves by a bi-layer control mode, thus ensuring safety and efficiency in the process of the group key distribution and updating and having remarkable superiority in the aspects such as computational overhead, storage overhead, communication overhead and the like.

Description

technical field [0001] The invention is a set of novel multicast key management schemes used in the IPv6 network environment. It is mainly used to solve the key management problem of user-oriented massively scalable multicast services. The invention belongs to the technical field of computer network application. Background technique [0002] As a group communication model for multi-point transmission and multi-party cooperative applications, multicast has broad application prospects in multimedia conferences, video-on-demand, multi-party online games, and computer collaborative work. The multicast sender only needs to transmit one copy of the data, and the network elements (such as routers and switches) copy and forward it for the receiver, which can not only reduce the processing overhead of the sender, but also reduce the transmission overhead on the network, making efficient large-scale Content distribution at scale becomes possible. The good scalability of multicast b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L29/06
Inventor 曹争殷鹏鹏陆正军
Owner SOUTHEAST UNIV
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