Abstract
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.
Highlights
As the amount of IoT devices has increased tremendously, there has been considerable interest in the security issues of IoT devices
We presented a novel resistors and capacitors (RC) physically unclonable function (PUF) that can be implemented using one MCU
Experimental results showed that the proposed RC PUF achieved 49% uniqueness and 98%
Summary
As the amount of IoT devices has increased tremendously, there has been considerable interest in the security issues of IoT devices. It has been shown that just a small set of ID/PW gives an access to a great number of IoT devices. ID/PW or security keys stored in nonvolatile memory It generates device-specific random sequences unique to a semiconductor or hardware by using the innate hardware uncertainty derived from the manufacturing process [2,3,4]. This study showed an analog PUF structure based on analog and mixed signal circuits In this implementation, an input challenge was converted to an analog signal by digital-to-analog converters (DACs) and passed through low pass filters and amplifiers. We present experimental results to characterize the RC PUF with two types of RC circuits
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
