Approximate Adiabatic Logic for Low-Power and Secure Edge Computing

Also Available Domains Low Power VLSI|Tanner EDA

Project Code :TVMATO775

Objective

This paper aims to implement a full adder sum circuit and carry circuit is designed using Energy-Efficient Secure Positive Feedback Adiabatic Logic (EE-SPFAL). Energy-Efficient Secure Positive Feedback Adiabatic Logic (EE-SPFAL) is an adiabatic logic family which is suitable to design low-power and secure adiabatic circuit. EE-SPFAL has uniform power consumption and is secure against Differential Power Analysis (DPA) based attacks.

Abstract

Approximate computing is a promising approach for error-tolerant applications running on the Internet of Things (IoT) edge devices to reduce power consumption. However, approximate computation is susceptible to side-channel attacks, such as attacks based on differential power analysis (DPA). Energy efficiency could be further enhanced by applying adiabatic logic in approximate edge computing while increasing its protection against the side-channel attacks. As a case study, we are presenting two approximate adders TSAA & TCAA based on adiabatic logic to illustrate the benefits of approximate computation combined with adiabatic logic. The proposed approximate adders leverage the dual-rail property of adiabatic logic to minimize the overall size and further decrease energy consumption. At some operating frequency and 45 nm technology node, the adiabatic TSAA and TCAA achieved power saving, energy saving in comparison with the standard CMOS AMA. We also show that both designs proposed are more secure against DPA attacks.

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