The End of Hacking: Counterfeit-proof Computer Chips

Searching_ _ _ · Mar 19, 2011

A PUF module is integrated directly into a chip -- a setup that is feasible not only in a large number of programmable semiconductors known as FPGAs (field programmable gate arrays) but equally in hardware components such as microchips and smartcards. "At its heart is a measuring circuit, for instance a ring oscillator. This oscillator generates a characteristic clock signal which allows the chip's precise material properties to be determined. Special electronic circuits then read these measurement data and generate the component-specific key from the data," explains Merli. Unlike conventional cryptographic processes, the secret key is not stored on the hardware but is regenerated as and when required. Since the code relates directly to the system properties at any given point in time, it is virtually impossible to extract and clone it. Invasive attacks on the chip would alter physical parameters, thus distorting or destroying the unique structure.
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Fingerprint Makes Computer Chips Counterfeit-Proof - Science Daily

J_L · Mar 19, 2011

How is it the end of hacking? I bet you can hack the PUF as well.

chronomatic · Mar 20, 2011

J_L said:

How is it the end of hacking?
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Hardware hacking.

I bet you can hack the PUF as well.
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In order to hack the PUF, one would need to interact with the PUF. This would change its state, which means the hack would fail. It's sort of like the HUP in quantum mechanics.

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The End of Hacking: Counterfeit-proof Computer Chips

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