A Dynamic Frequency Scaling AES Engine for Wireless Sensor Network

• Main Authors: Rong Liang, 梁蓉
• Other Authors: Yarsun Hsu
• Format: Others
• Language: en_US
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/27486050178546508471

碩士 === 國立清華大學 === 電機工程學系 === 94 === Wireless sensor network is more and more popular nowadays. Its applications are wide-spreading from household to military use. The main purpose of this kind of network is to control and monitor some parameters in the environment but not to provide an access for large amount of data transfer. Consequently, nodes in such network stay in the idle mode most of the time so they can last long with single battery as power supply. In addition to the life time of a node, the security of data transferring over the air should be concerned. In this work, a discussion on the implementations based on 32-bit and 128-bit datapath design of the security engine will be provided. The discussion will focus on area cost down and average power consumption. From the comparison results, it is shown that the overall evaluation of the 32-bit design of the AES core prevails over the 128-bit design. Moreover, system architecture with a dynamic frequency scaling 32-bit AES core is also provided followed by a system simulation, which gives an overall function of the security engine.