METHOD FOR MANAGING GROUP KEY FOR SECURE MULTICAST COMMUNICATION

摘要

The present invention relates to a group key management methods for secure multicast communication. That is, in the present invention, large-scale users ability to create a user key based on the Chinese Remainder Theorem uses a method for distributing group key using them, manages the receiver in the form a tree (tree) in order to support a large number of users support, while minimizing the number of messages that are sent to the network. In addition, the plurality of receivers share a group key safely, and in particular adaptation to changes in the membership of the user's subscription or unsubscribe to the recipient group, and allows the user only those belonging to the group can have a correct key group. ; Multicast, a node, a tree, a group key renewal