Google Researchers Warn Quantum Computers Pose Growing Threat to Crypto Encryption

Quantum computers would need far fewer resources than estimated earlier to break widely used cryptographic algorithms protecting crypto wallets and transactions, a Google white paper reported.

These new-age computers have exponentially higher computing power compared to traditional machines, as they make use of qubits, which can represent multiple states simultaneously, rather than the binary bits that characterize traditional computing. 

The jump in computing power can significantly speed up and improve digital calculations, and is also potentially capable of breaking the types of numerical encryptions found in cryptocurrencies, the researchers said. 

Bitcoin private keys could be at risk

The research indicates that future quantum computers could potentially compromise Bitcoin private keys in significantly less time than previously calculated. This would give attackers a window to steal funds before the network can react. Ethereum and other networks that rely on similar elliptic curve cryptography would also face increased vulnerability.

Although large-scale, fault-tolerant quantum computers are still years away, many blockchain projects have already begun exploring quantum-resistant encryption methods to prepare for the long-term risk.

The need for rapid change

"The ultimate path towards post-quantum security in blockchain technologies is technically clear, if logistically difficult," the researchers said. "We argue that steps towards this complex migration should begin immediately."

The findings add to ongoing discussions in the industry about the need to transition cryptographic standards before quantum computing reaches sufficient scale.