Fidelity Warns Bitcoin’s Private Keys Face Future Quantum Risk

Fidelity flags a long-term threat hiding in Bitcoin's code

Fidelity Digital Assets, the crypto arm of financial services giant Fidelity Investments, has published a research report examining whether Bitcoin's underlying security could eventually be broken by quantum computers, and what the network's developers are doing about it. Bitcoin is a…

Fidelity Warns Bitcoin Private Keys Face Quantum Computing Risk

TLDR Fidelity Digital Assets published research on Sept. 1 examining Bitcoin’s exposure to future quantum computers. Quantum machines could theoretically derive private keys from public keys using Shor’s algorithm. A proposed system called SHRINCS uses hash-based signatures instead of elliptic-curve cryptography. Larger quantum-resistant signatures would slow transaction throughput and raise costs. Fidelity and eight other [...]

Fidelity Warns Bitcoin's Private Keys Face Future Quantum Risk

Fidelity Digital Assets says future quantum computers could derive Bitcoin private keys from exposed public keys, threatening funds. A proposed hash-based signature system could strengthen security, although larger signatures would reduce transaction throughput and complicate wallet recovery. Fidelity Examines Bitcoin’s Quantum Vulnerability Bitcoin’s private-key protections may eventually require replacement or supplementation, according to the…

Fidelity Warns Bitcoin’s Private Keys Face Future Quantum Risk

Fidelity Digital Assets says future quantum computers could derive Bitcoin private keys from exposed public keys, threatening funds. A proposed hash-based signature system could strengthen security, although larger signatures would reduce transaction throughput and complicate wallet recovery....