US EditionQuantum Computers May Crack RSA Encryption with Fewer Qubits than Expected
- In 2025, a research team from Google's quantum computing division, with Craig Gidney as the lead, demonstrated that quantum machines could break 2,048-bit RSA encryption using substantially fewer resources than previously estimated.
- This finding builds on advances in quantum algorithms and error correction that reduce the required qubits from 20 million in 2019 to under one million today.
- Gidney's research suggests that a quantum machine equipped with under one million imperfect qubits could break a 2,048-bit RSA key in less than a week, highlighting potential vulnerabilities in encryption systems such as those protecting cryptocurrency wallets.
- Gidney reported that the required qubit count for factoring a 2048-bit RSA key has dropped by a factor of 20 compared to earlier projections, bringing theoretical predictions closer to realistic quantum security concerns.
- Though such quantum machines do not yet exist, this research urges the security community to accelerate post-quantum cryptography adoption to protect future communications.
21 Articles
21 Articles
Quantum computers may crack RSA encryption with fewer qubits than expected
A team of researchers at AI Google Quantum AI, led by Craig Gidney, has outlined advances in quantum computer algorithms and error correction methods that could allow such computers to crack Rivest–Shamir–Adleman (RSA) encryption keys with far fewer resources than previously thought. The development, the team notes, suggests encryption experts need to begin work toward developing next-generation encryption techniques. The paper is published on t…
Cracking Bitcoin Encryption Is Getting Much Easier, Google Says
Researchers at Google have found that it may be 20 times easier than previously thought for quantum computers to break encryption methods used by Bitcoin. Google’s quantum team reported that breaking RSA encryption, which is used in many secure systems, including some Bitcoin wallets, could require 20 times fewer qubits than earlier estimates had indicated. Although Bitcoin relies mainly on different cryptographic methods — such as SHA-256 and …
Cracking Bitcoin-Like Encryption Through Quantum Computing Could be 20x Easier Than Thought
A new research paper by Google Quantum AI researcher Craig Gidney shows that breaking widely used RSA encryption may require 20 times fewer quantum resources than previously believed.The finding did not specifically mention bitcoin BTC or other cryptocurrencies, but took aim at the encryption methods that form the technical backbone used to secure crypto wallets and, in some cases, transactions.RSA is a public-key encryption algorithm used to en…
New Microsoft Entra Connect Update Replaces Legacy Login Methods - Cybernoz - Cybersecurity News
Quantum computing is rapidly emerging as one of the most transformative technology trends of 2025, promising to revolutionize industries by solving complex problems that are currently beyond the reach of classical computers. Unlike traditional computers that process information in binary code—using bits that represent either 0 or 1—quantum computers use qubits, which can represent both 0 and 1 simultaneously due to the principle of superposition…
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