Quantum computing could threaten blockchain cryptography, prompting post-quantum migration plans

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An educational guide examines whether quantum computers pose a risk to blockchain security. It explains that quantum machines use qubits to factor large numbers far faster than classical computers, which could undermine the encryption that current blockchains rely on. The article outlines steps to address this, including assessing vulnerable signature schemes, adopting post-quantum algorithms such as lattice-based signatures, and introducing gradual upgrade mechanisms. It also presents a hypothetical scenario in which an attack on a blockchain forces an emergency hard fork.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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