Research of batch rekeying based on queue model
基于队列模型的批量更新密钥的研究

In order to offer secrecy for multicast applications, the traffic encryption key has to be changed whenever a user joins or leaves the system. At present, many approaches based upon individual rekeying bring about the out-of-sync and inefficient problems. The paper proposed the batch rekeying based on queue model, which it would rekey when request to live reached zero by setting request to live to the first rekeying request in the queue. The results of analysis and experiment show that it can not only alleviate the out-of-sync and inefficient problems in the individual rekeying, but also decrease key server's rekeying cost and has better flexibility when compared with batch rekeying based on fixed period.