GPIO PUF for IoT Devices

Vaidya, G and Prabhakar, TV and Manjunath, L (2020) GPIO PUF for IoT Devices. In: 2020 IEEE Global Communications Conference, GLOBECOM 2020, 7-11 Dec 2020, Virtual, Taipei; Taiwan.

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Abstract

As the number of IoT devices start to explode, establishing the irrefutable device identity is at the root of trust. Physically Unclonable Functions (PUFs) are emerging as a significant alternative to the conventional methods to establish the hardware root of trust.The existing research in PUFs has focused on the design of custom circuits for deriving signatures. These signatures are used as security primitive. We design a novel GPIO PUF from GPIOs of COTS microcontrollers. Further, we demonstrate our method with low-cost off-the-shelf Arduino boards and characterize the repeatability and uniqueness of the PUF. Our experimental evaluation proves the robustness of GPIO PUF. We achieved 100 accuracy for the identification of 12 devices on the 12000 measurements collected over the duration of one month. Our evaluation has shown that the GPIO PUF is a promising alternative for generating strong identification which could be used as a primitive for several applications. We further discuss ways to enhance the uniqueness for a larger set of smart devices. © 2020 IEEE.

Item Type:	Conference Paper
Publication:	2020 IEEE Global Communications Conference, GLOBECOM 2020 - Proceedings
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright of this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Internet of things; Network security, Conventional methods; Custom circuits; Experimental evaluation; Low costs; Physically unclonable functions; Root of trusts; Security primitives; Smart devices, Cryptography
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited:	26 Feb 2021 11:03
Last Modified:	26 Feb 2021 11:03
URI:	http://eprints.iisc.ac.in/id/eprint/68044

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