A new paper from researchers affiliated with Theta Labs, the Ethereum Foundation, StarkWare and other institutions says the resources needed for a key computational stage in potential quantum attacks on Bitcoin and Ethereum are now estimated at more than 50% below a figure previously published by Google Quantum AI. According to CoinDesk, the proposed quantum circuit design would require about 1,151 logical qubits and roughly 1.3 million Toffoli gate operations, for a combined score of around 1.5 billion. That compares with Google’s earlier figure of about 3 billion. The paper focuses on improving the point-addition component within Shor’s algorithm, which in theory could allow a sufficiently powerful quantum computer to derive a private key from a public key. Jieyi Long, CTO of Theta Labs and one of the paper’s main authors, said quantum attacks are not an immediate threat, but migration to quantum-resistant systems would take years and could not be left until after an attack occurs.
Researchers from Theta Labs, the Ethereum Foundation, StarkWare and other institutions have published a new paper showing that the resources required for a key computational stage in potential quantum attacks on Bitcoin (BTC) and Ethereum (ETH) are more than 50% lower than an earlier estimate published by Google Quantum AI, according to CoinDesk.
The paper’s proposed quantum circuit design would need about 1,151 logical qubits and around 1.3 million Toffoli gate operations to complete the calculation. It assigns the work a combined score of about 1.5 billion, below Google’s previously published level of roughly 3 billion.
The research mainly improves the point-addition step in Shor’s algorithm. In theory, that algorithm could use a sufficiently powerful quantum computer to derive a private key from a public key.
Jieyi Long, CTO of Theta Labs and one of the paper’s main authors, said quantum attacks are not imminent. He added that migration to quantum-resistant systems would take years and could not be remedied after an attack had already happened.
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