Kin-Ching Chan

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ulticasting is an efficient way to deliver data from a sender to multiple receivers [1]. One of the main advantages of multicast over uni-cast is the reduction of the network resources sent to the receivers. As opposed to broadcasting, where everyone receives the data, multicast delivers data only to a group of interested users termed a " multicast group. "(More)
—In order to offer backward and forward secrecy for multicast applications (i.e., a new member cannot decrypt the mul-ticast data sent before its joining and a former member cannot de-crypt the data sent after its leaving), the data encryption key has to be changed whenever a user joins or leaves the system. Such a change has to be made known to all the(More)
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