Based on Bijiawang, developer Ed Hennis has proposed a new amendment (Amendment 420) for the XRP Ledger to introduce a protocol-level feature aimed at mitigating quantum computing threats. The optional mechanism allows accounts to use a rotating 'one-time' signature key for each transaction, which is discarded after use, providing protection against potential key-cracking attacks during the ledger's fast validation cycle. The proposal, inspired by Nik Bougalis and David Schwartz, introduces a `SingleUseKey` field and outlines a user process that includes a recoverable regular key, while also highlighting implementation risks related to tickets and multi-signature use.
XRP Ledger Proposes Quantum-Resistant Mechanism via Amendment 420
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Summary
XRP Ledger developer Ed Hennis has proposed Amendment 420 to add a quantum-resistant feature. The optional mechanism uses a one-time signature key per transaction, which is discarded after use. Inspired by Bougalis and Schwartz, the amendment introduces a `SingleUseKey` field and a recoverable regular key process. Implementation risks include ticket and multi-signature conflicts. As users consider *is KuCoin safe*, such protocol upgrades reflect ongoing security efforts.
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