Quantum computers need vastly fewer resources than thought to break vital encryption
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Breakthrough in quantum attack resource requirements impacts long-term cryptographic infrastructure.
Two independently published whitepapers—one using neutral-atom qubits with optical tweezers and another from Google—demonstrate that breaking 256-bit elliptic-curve cryptography (ECC) requires drastically fewer resources than previously estimated. The neutral-atom approach can crack ECC-256 in 10 days using fewer than 30,000 physical qubits (a 100x reduction), while Google's method breaks blockchain ECC in under 9 minutes with a 20x reduction. These advances, though not yet peer-reviewed, signal meaningful progress toward cryptographically relevant quantum computing (CRQC) and intensify the urgency for post-quantum cryptography migration.
Dan Goodin — Dan Goodin is Senior Security Editor at Ars Technica, where he oversees coverage of malware, computer espionage, botnets, hardware hacking, encryption, and passwords. A journalist with more than 25 years experience, he has been chronicling the...