Cryptology ePrint Archive: Report 2018/1064

Towards Provably-Secure Analog and Mixed-Signal Locking Against Overproduction

Nithyashankari Gummidipoondi Jayasankaran and Adriana Sanabria Borbon and Edgar Sanchez-Sinencio and Jiang Hu and Jeyavijayan Rajendran

Abstract: Similar to digital circuits, analog and mixed-signal (AMS) circuits are also susceptible to supply-chain attacks such as piracy, overproduction, and Trojan insertion. However, unlike digital circuits, supply-chain security of AMS circuits is less explored. In this work, we propose to perform “logic locking” on digital section of the AMS circuits. The idea is to make the analog design intentionally suffer from the effects of process variations, which impede the operation of the circuit. Only on applying the correct key, the effect of process variations are mitigated, and the analog circuit performs as desired. We provide the theoretical guarantees of the security of the circuit, and along with simulation results for the band-pass filter, low-noise amplifier, and low-dropout regulator, we also show experimental results of our technique on a band-pass filter.

Category / Keywords: implementation / AMS security, logic locking, process variations, obfuscation, hardware security

Original Publication (with minor differences): ICCAD 2018

Date: received 29 Oct 2018

Contact author: gjn at tamu edu

Available format(s): PDF | BibTeX Citation

Version: 20181109:161952 (All versions of this report)

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