Google Suggests Quantum Attacks on Cryptocurrency Encryption May Require Fewer Resources
Google researchers warn that improved quantum algorithms could break cryptocurrency encryption with fewer resources than previously thought. Their paper estimates that solving the elliptic curve discrete logarithm problem—a core security component for blockchains—might require only about 1,200 logical qubits and under 500,000 physical qubits, with attacks taking minutes on advanced systems. While such quantum computers don’t yet exist, the findings shorten the perceived timeline for a threat. The researchers urge the crypto community to accelerate the transition to post-quantum cryptography and adopt interim protective measures, like reducing public key exposure, to mitigate future risks.
