Quantum encryption may secure the Danish energy grid

February 26, 2024

Quantum key encryptionQuantum key encryption is a new generation of encryption designed to be secure in the future—even to hackers with access to a quantum computer. Because where common encryption is based on mathematical formulas, which indeed can be very difficult to break for the computers we know today, encryption with quantum key distribution is based on quantum mechanical principles. This means that the key sent between sender and receiver is generated from the randomness that exists in quantum mechanics. Put differently, the quantum physical laws apply in the system. In this way, the security of the system no longer relies on mathematical algorithms, but on unbreakable physical laws.

Quantum key encryption

Quantum key encryption is a new generation of encryption designed to be secure in the future—even to hackers with access to a quantum computer. Because where common encryption is based on mathematical formulas, which indeed can be very difficult to break for the computers we know today, encryption with quantum key distribution is based on quantum mechanical principles.

 

This means that the key sent between sender and receiver is generated from the randomness that exists in quantum mechanics. Put differently, the quantum physical laws apply in the system. And since quantum mechanics prescribes that any measurement of the system—such as attempts to intercept information—will interfere with the signal, a system designed to detect this disturbance could break the connection. In this way, the security of the system no longer relies on mathematical algorithms, but on unbreakable physical laws.

In DTU’s topic about quantum technology , you can find answers to the most common questions and read more about the research:


The source of this news is from Technical University of Denmark

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