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Graphene as a new bulwark to secure data against the most sophisticated hacking

11 de May de 2021
in Tech
De nouvelles puces en graphène pourraient augmenter la sécurité du chiffrement. © depadesigns, Sutterstock
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American researchers have developed graphene chips to generate encryption keys. These keys would be impossible to predict with artificial intelligence, one of the weak points of silicon chips.

Many cryptographic systems are function-based physical non-clonable (PUF), microchips that generate encryption keys. Although apparently identical, each chip generates different responses caused by internal variations induced by the manufacturing process. In theory, this ensures data security, as each PUF is unique.

However, during a data breach, an artificial intelligence (AI) can analyze encryption and create a model that predicts the operation of a PUF by silicon. Any new key is then compromised, forcing a change of chip, or even computer. To solve this problem, researchers at Pennsylvania State University turned to the graphene. The process was detailed in an article published in the journal Nature Electronics.

Low-power, reconfigurable cryptographic chips

The team created 2,000 transistors graphene, which each have a conductivity slightly different due to the manufacturing process, and have integrated them into PUFs. The researchers then used their characteristics to create a simulation of 64 million of these chips, which was analyzed by an AI to try to predict the results, without success.

The researchers have thus shown that the graphene PUF is resistant to attacks based on artificial intelligence. In addition, these chips have a very low consumption and thanks to the memristive properties graphene, where the value of its electrical resistance can be changed, it is possible to reconfigure them. If someone managed to create an attack capable of predicting the keys generated in this way, there would be no need to replace the PUF.

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