Even Chips Deserve Protection

In the digital age, the security of electronic devices is paramount, not only to safeguard sensitive data but also to ensure the integrity of the hardware itself.

Advances in hardware security have taken a significant step forward, with researchers from the University of Vermont, in the US, unveiling a self-destructing mechanism designed to fortify hardware against threats such as counterfeiting and unauthorised access.

Presented at the recent IEEE International Solid-State Circuits Conference (ISSCC) in San Francisco, the research team led by Eric Hunt-Schroeder introduced a novel approach that integrates a self-destruct mechanism with physically unclonable functions (PUFs). PUFs harness the distinctive characteristics of individual transistors to generate a unique digital fingerprint, offering an effective means of authentication.

The innovative system devised by the University of Vermont team uses the inherent vulnerabilities of hardware components to its advantage. By manipulating operating voltages (V) across circuits, the mechanism initiates electromigration, a process that displaces metal atoms, thereby creating open circuits and voids. Additionally, by elevating the operating voltage to around 2.5V, the system accelerates time-dependent dielectric breakdown, resulting in short circuits and rendering the hardware inoperable.