Cryptology ePrint Archive: Report 2020/804

Lightweight Ciphers on a 65 nm ASIC - A Comparative Study on Energy Consumption

Bastian Richter and Amir Moradi

Abstract: Low energy consumption is an important factor in today's technologies as many devices run on a battery and there are new applications which require long runtimes with very small batteries. As many of these devices are connected to some kind of network, they require encryption/decryption to securely transmit data. Hence, the energy consumption of the cipher is an important factor for the battery life. We evaluate the energy consumption of lightweight ciphers implemented on a custom 65nm ASIC. Since the energies to measure are very small, we first introduce, compare and evaluate two techniques to precisely measure the energy consumption of a real cryptographic core. In our comparative investigations, using the PRINCE block cipher we examine the effect of the design architecture (round-based versus unrolled) on the amount of energy consumption. In addition to considering other effects (like fixed key versus random key), we compare round-based implementations of different block ciphers (PRINCE, MIDORI and SKINNY) under similar settings providing first such practical investigations.

Category / Keywords: implementation / implementation, energy consumption, lightweight cipher, ASIC

Original Publication (in the same form): IEEE Computer Society Annual Symposium on VLSI - ISVLSI 2020

Date: received 28 Jun 2020

Contact author: bastian richter at rub de,amir moradi@rub de

Available format(s): PDF | BibTeX Citation

Version: 20200630:125957 (All versions of this report)

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