Last Wednesday, Google’s quantum researcher Craig Gidney published the results of a study according to which breaking Bitcoin would be much easier than expected.
In particular, according to Gidney’s study, decrypting RSA encryption would be 20 times easier than previously thought.
The study by the Google researcher: quantum computers can break Bitcoin
Gidney writes that to plan the transition to quantum computer-resistant cryptographic systems, one must first understand the cost of quantum attacks on vulnerable cryptographic systems.
He cites a previous study of his from 2019 in which he estimated that to break entire 2048-bit RSA, it might take just eight hours of work by a quantum computer with 20 million qubits.
In the recent study, however, it reduced this estimate to less than a week, and with a quantum computer with less than 1 million qubits.
Gidney also explains how it was possible to imagine reducing the estimates so much thanks to new calculation and
We współpracy z: https://en.cryptonomist.ch/2025/05/27/google-it-will-be-easier-to-breach-bitcoin-with-quantum-computers/
