Design of Resistor-Capacitor Physically Unclonable Function for Resource-Constrained IoT Devices

Keeping IoT devices secure has been a major challenge recently. One of the possible solutions to secure IoT devices is to use a physically unclonable function (PUF). A PUF is a security primitive that can generate device-specific cryptographic information by extracting the features of hardware uncer...

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Main Authors: Sangjae Lee, Mi-Kyung Oh, Yousung Kang, Dooho Choi
Format: Article
Language:English
Published: MDPI AG 2020-01-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/20/2/404
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author Sangjae Lee
Mi-Kyung Oh
Yousung Kang
Dooho Choi
author_facet Sangjae Lee
Mi-Kyung Oh
Yousung Kang
Dooho Choi
author_sort Sangjae Lee
collection DOAJ
description Keeping IoT devices secure has been a major challenge recently. One of the possible solutions to secure IoT devices is to use a physically unclonable function (PUF). A PUF is a security primitive that can generate device-specific cryptographic information by extracting the features of hardware uncertainty. Because PUF instances are very difficult to replicate even by the manufacturer, the generated bit sequence can be used as cryptographic keys or as a unique identifier for the device. Regarding the implementation of PUF, the majority of PUFs introduced over the past decade are in the form of active components and have been implemented as separate chips or embedded as a part of a chip, making it difficult to use them in low-cost IoT devices due to cost and design flexibility. One approach to easily adopt PUFs in resource-constrained IoT devices is to use passive components such as resistors and capacitors (RC) that can be configured at low cost. The main feature of this RC-based PUF is that it extracts the small difference caused by charging and discharging of RC circuits and uses it as a response. In this paper, we extend the previous research and show the possibility to secure IoT devices by using the RC-based PUF.
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spelling doaj.art-d065ab122b5c41f6a3445fc45ee04e442022-12-22T03:09:58ZengMDPI AGSensors1424-82202020-01-0120240410.3390/s20020404s20020404Design of Resistor-Capacitor Physically Unclonable Function for Resource-Constrained IoT DevicesSangjae Lee0Mi-Kyung Oh1Yousung Kang2Dooho Choi3Electronics and Telecommunications Research Institute, Daejeon 34129, KoreaElectronics and Telecommunications Research Institute, Daejeon 34129, KoreaElectronics and Telecommunications Research Institute, Daejeon 34129, KoreaElectronics and Telecommunications Research Institute, Daejeon 34129, KoreaKeeping IoT devices secure has been a major challenge recently. One of the possible solutions to secure IoT devices is to use a physically unclonable function (PUF). A PUF is a security primitive that can generate device-specific cryptographic information by extracting the features of hardware uncertainty. Because PUF instances are very difficult to replicate even by the manufacturer, the generated bit sequence can be used as cryptographic keys or as a unique identifier for the device. Regarding the implementation of PUF, the majority of PUFs introduced over the past decade are in the form of active components and have been implemented as separate chips or embedded as a part of a chip, making it difficult to use them in low-cost IoT devices due to cost and design flexibility. One approach to easily adopt PUFs in resource-constrained IoT devices is to use passive components such as resistors and capacitors (RC) that can be configured at low cost. The main feature of this RC-based PUF is that it extracts the small difference caused by charging and discharging of RC circuits and uses it as a response. In this paper, we extend the previous research and show the possibility to secure IoT devices by using the RC-based PUF.https://www.mdpi.com/1424-8220/20/2/404physically unclonable functionhardware securitypassive componentresistor-capacitoriot
spellingShingle Sangjae Lee
Mi-Kyung Oh
Yousung Kang
Dooho Choi
Design of Resistor-Capacitor Physically Unclonable Function for Resource-Constrained IoT Devices
Sensors
physically unclonable function
hardware security
passive component
resistor-capacitor
iot
title Design of Resistor-Capacitor Physically Unclonable Function for Resource-Constrained IoT Devices
title_full Design of Resistor-Capacitor Physically Unclonable Function for Resource-Constrained IoT Devices
title_fullStr Design of Resistor-Capacitor Physically Unclonable Function for Resource-Constrained IoT Devices
title_full_unstemmed Design of Resistor-Capacitor Physically Unclonable Function for Resource-Constrained IoT Devices
title_short Design of Resistor-Capacitor Physically Unclonable Function for Resource-Constrained IoT Devices
title_sort design of resistor capacitor physically unclonable function for resource constrained iot devices
topic physically unclonable function
hardware security
passive component
resistor-capacitor
iot
url https://www.mdpi.com/1424-8220/20/2/404
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AT doohochoi designofresistorcapacitorphysicallyunclonablefunctionforresourceconstrainediotdevices