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A proposal called SPHINCS- could let Ethereum users protect their accounts against quantum-computing attacks for as little as 7 cents per transaction, according to the lead developer behind Ethereum's Kohaku project.
The plan is positioned as a near-term patch while the network works toward a more permanent post-quantum solution.
What Post-Quantum Signatures Are — and Why They Matter A digital signature is the cryptographic proof that you, and only you, authorized a transaction.
The signatures Ethereum currently uses rely on mathematical problems that classical computers cannot solve in any practical timeframe.
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