%0 Electronic Article %A Yu-Kuen Lai %+ Department of Electrical Engineering, Chung Yuan Christian University, Zhongli City, Taiwan %A Theophilus Wellem %+ Department of Electrical Engineering, Chung Yuan Christian University, Zhongli City, Taiwan %A Hui-Ping You %+ Department of Electrical Engineering, Chung Yuan Christian University, Zhongli City, Taiwan %K high-speed network traffic %K bounded relative error %K point query operations %K count sketch %K high-speed data stream %K counter update %K network security applications %K constant memory access cycle %K incoming traffic processing %K hardware-assisted entropy norm estimation accuracy %K throughput %K processing speed %K one-pass method %X The computation of the entropy of a high-speed data stream in a one-pass fashion is crucial to many network security applications. Motivated by the work of Lall et al., this study examines the design trade-off of processing speed and accuracy for estimating the entropy norm. The proposed scheme leverages the Count Sketch with constant memory access on counter update and point query operations. With a bounded relative error and a constant memory access cycle, the design can process incoming traffic with a throughput of 30 Gbit/s. %@ 0013-5194 %T Hardware-assisted estimation of entropy norm for high-speed network traffic %B Electronics Letters %D November 2014 %V 50 %N 24 %P 1845-1847 %I Institution of Engineering and Technology %U https://digital-library.theiet.org/;jsessionid=91m10t9jb3skc.x-iet-live-01content/journals/10.1049/el.2014.2377 %G EN