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面向工业无线网络的低开销快速AES加密方法

DOI: 10.13190/j.jbupt.2015.01.011, PP. 55-60

Keywords: 高级加密标准,查找表,低开销,工业无线网络

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Abstract:

面向资源有限的工业无线网络,提出一种基于单查找表的快速高级加密标准(AES)的加密方法.对目前普遍采用的基于4张1KB查找表方法的查找表进行压缩和优化,构建了一张512B的查找表,减小了查找表的存储开销,并有效降低GF(28)上乘法所产生的开销;同时对轮加密公式进行了优化,减少因查找表被压缩而引起的附加操作.实验结果显示,相比4查找表法,该方法降低了72%的存储开销,但在时间开销和能量开销上均提高了43%;相比射频芯片上的硬件加速器,该方法降低了55%的时间开销和61%的能量开销,但存储开销为它的2.5倍.

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