Security News > 2020 > April > Researchers develop self-healing and self-concealing PUF for hardware security

NUS researchers Prof Massimo Alioto and Mr Sachin Taneja testing the self-healing and self-concealing PUF for hardware security.

Prof Alioto elaborated, "On-chip sensing, as well as machine learning and adaptation, allow us to raise the bar in chip security at significantly lower cost. As a result, PUFs can be deployed in every silicon system on earth, democratising hardware security even under tight cost constraints."

The immersed-in-logic approach scatters the PUF standard cells among the cells used for the digital logic, thereby "Hiding" or concealing any explicit points of attack for hackers trying to probe specific chip signals to physically reconstruct the keys.

The team is also pursuing ubiquitous and ultra-low-cost enablement of hardware security through tight physical co-integration of architectures and security primitives with circuitry that is generally available in any system on a chip, ranging from logic, memory, intra-chip data communication and accelerators.

Ultimately, the team's newest breakthrough is expected to enable hardware security at the granularity of every silicon chip, even within individual sub-systems on a chip.

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