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May, 08 2025 14:36 PM
Technology Quantum computers could protect our data from quantum computers A powerful enough quantum computer could crack the encryption methods currently used to protect data around the world, but the solution might be a quantum algorithm once thought to be completely useless By Matthew Sparkes 8 April 2025 Facebook / Meta Twitter / X icon Linkedin Reddit Email Could we fight quantum with quantum?Bartlomiej Wroblewski / Alamy A “useless” algorithm that serves as a benchmark for demonstrating the power of quantum computers over ordinary devices could potentially be repurposed as a way to keep data secure from, ironically, quantum computers. Quantum computers have long threatened to crack existing encryption algorithms, which rely on problems that are difficult for classical computers to solve, such as finding the prime factors of a large number. A sufficiently big quantum computer could do this, but Bill Fefferman at the University of Chicago, Illinois, and his colleagues say the devices could also… Advertisement if (window.adverts) { window.adverts.addToArray({"pos": "sidebar-slot" }); } Sign up to our weekly newsletter Receive a weekly dose of discovery in your inbox! We'll also keep you up to date with New Scientist events and special offers. Sign up
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