While the world is focused on Artificial Intelligence (AI), researchers from Shanghai University in China have made a major breakthrough in quantum cryptography. A team led by Professor Wang Chao successfully cracked a 90-bit RSA integer using Canada’s D-Wave Advantage quantum computer—a task once thought impossible.
What Is Quantum Cryptography?
Technology that can break or secure codes using quantum mechanics
Quantum cryptography uses subatomic particles to create or break codes. It’s considered one of the key tools for the Fourth Industrial Revolution, as it could make it possible to break any existing code, challenging today’s security systems.
Quantum Success Could Lead to a Dangerous Future
Despite the success, experts are concerned that this technology brings serious cybersecurity risks. They warn of Q-Day—a future moment when quantum computers could crack even the strongest encryption systems, putting private data and global communications at risk.
Post-quantum cryptography is being developed as a safer alternative
To stop such dangers, scientists across the globe are working on post-quantum cryptography—new security methods that can resist quantum attacks. Meanwhile, Wang’s team has combined quantum annealing algorithms with traditional cryptographic tools to crack a 90-bit code, surpassing previous records by Fujitsu (9-bit), Lockheed Martin (13-bit), and Purdue University (20-bit).
What Is Quantum Annealing?
A method that finds the best solution using the lowest energy state
Quantum annealing is a technique used to find optimal solutions by simulating how nature finds low-energy states. It is especially powerful for solving complex mathematical problems, like breaking encryption.
This research not only shows how quantum computing can impact modern cryptography, but it also introduces a new way to attack encryption systems. It’s a sign that the quantum era of cybersecurity has already begun.
Experts advise sectors like banking, blockchain, and government services to quickly start using post-quantum encryption methods. A practice called “quantum migration” is already in motion worldwide to protect sensitive data from future quantum computer attacks.
