Abstract
The number of on-chip instruments, which are omnipresent in consumer electronics (CE) devices and used to monitor chips? performance, is increasing. The IEEE P1687 standard is used to streamline the access to on-chip instruments. However, the easy access to onchip instruments is prone to abuse. Attackers can easily access chip internals through an internal Joint Test Action Group (IJTAG) network and leak secret data. This article presents a physical unclonable function (PUF)-based access mechanism that enhances the security of the IJTAG network.
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