After summarizing the related research work, we present a multi level transaction model to solve the convert channel and starvation problems in concurrent control under BLP multi level security model.

• 在总结了已有的研究基础上,针对BLP多级安全模型下并发控制产生隐通道和饥饿问题,本文提出了一种多级事务模型---NHSTM模型。