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CYBER WARS
The ultimate defense against hackers may be just a few atoms thick
by Staff Writers
Brooklyn NY (SPX) Nov 30, 2017


a) At monolayer thickness, this material has the optical properties of a semiconductor that emits light. At multilayer, the properties change and the material doesn't emit light. (b) Varying the thickness of each layer results in a thin film speckled with randomly occurring regions that alternately emit or block light. (c) Upon exposure to light, this pattern can be translated into a one-of-a-kind authentication key that could secure hardware components at minimal cost.

The next generation of electronic hardware security may be at hand as researchers at New York University Tandon School of Engineering introduce a new class of unclonable cybersecurity security primitives made of a low-cost nanomaterial with the highest possible level of structural randomness. Randomness is highly desirable for constructing the security primitives that encrypt and thereby secure computer hardware and data physically, rather than by programming.

In a paper published in the journal ACS Nano, Assistant Professor of Electrical and Computer Engineering Davood Shahrjerdi and his NYU Tandon team offer the first proof of complete spatial randomness in atomically thin molybdenum disulfide (MoS2). The researchers grew the nanomaterial in layers, each roughly one million times thinner than a human hair. By varying the thickness of each layer, Shahrjerdi explained, they tuned the size and type of energy band structure, which in turn affects the properties of the material.

"At monolayer thickness, this material has the optical properties of a semiconductor that emits light, but at multilayer, the properties change, and the material no longer emits light.

This property is unique to this material," he said. By tuning the material growth process, the resulting thin film is speckled with randomly occurring regions that alternately emit or do not emit light. When exposed to light, this pattern translates into a one-of-a-kind authentication key that could secure hardware components at minimal cost.

Shahrjerdi said his team was pondering potential applications for what he described as the beautiful random light patterns of MoS2 when he realized it would be highly valuable as a cryptographic primitive.

This represents the first physically unclonable security primitive created using this nanomaterial. Typically embedded in integrated circuits, physically unclonable security primitives protect or authenticate hardware or digital information. They interact with a stimulus - in this case, light - to produce a unique response that can serve as a cryptographic key or means of authentication.

The research team envisions a future in which similar nanomaterial-based security primitives can be inexpensively produced at scale and applied to a chip or other hardware component, much like a postage stamp to a letter. "No metal contacts are required, and production could take place independently of the chip fabrication process," Shahrjerdi said. "It's maximum security with minimal investment."

Research Report: "Physically Unclonable Cryptographic Primitives by Chemical Vapor Deposition of Layered MoS2"

CYBER WARS
Quantum computers help create hack-proof forms of data encryption
Durham NC (SPX) Nov 28, 2017
Recent advances in quantum computers may soon give hackers access to machines powerful enough to crack even the toughest of standard internet security codes. With these codes broken, all of our online data - from medical records to bank transactions - could be vulnerable to attack. To fight back against the future threat, researchers are wielding the same strange properties that drive quan ... read more

Related Links
NYU Tandon School of Engineering
Cyberwar - Internet Security News - Systems and Policy Issues


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