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Title:
Lightweight Ciphers on a 65 nm ASIC - A Comparative Study on Energy Consumption
Authors: Bastian Richter, 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.
ePrint: https://eprint.iacr.org/2020/804
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