Round Gating for Low Energy Block Ciphers

Subhadeep Banik, Andrey Bogdanov, Francesco Regazzoni, Takanori Isobe, Harunaga Hiwatari, Toru Akishita

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


Pushed by the pervasive diffusion of devices operated by battery or by the energy harvested, energy has become one of the most important parameter to be optimized for embedded systems. Particularly relevant would be to optimize the energy consumption of security primitives.
In this paper we explore design techniques for implementing block ciphers in a low energy fashion. We concentrate on round based implementation and we discuss how gating, applied at round level can affect and improve the energy consumption of the most common lightweight block cipher currently used in the internet of things. Additionally, we discuss how to needed gating wave can be generated. Experimental results show that our technique is able to reduce the energy consumption in most block ciphers by over 60% while incurring only a minimal overhead in hardware.
Original languageEnglish
Title of host publicationProceedings of the 2016 IEEE International Symposium on Hardware Oriented Security and Trust (HOST)
Publication date2016
ISBN (Print)978-1-4673-8825-2
Publication statusPublished - 2016
EventIEEE International Symposium on Hardware Oriented Security and Trust (HOST) - The Ritz-Carlton, McLean, VA, United States
Duration: 3 May 20165 May 2016


ConferenceIEEE International Symposium on Hardware Oriented Security and Trust (HOST)
LocationThe Ritz-Carlton
Country/TerritoryUnited States
CityMcLean, VA
Internet address


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