Hassan Khodaiemehr, Khadijeh Bagheri, Chen Feng · 2026 · arXiv
DOI: 10.48550/arXiv.2610.29230 · open-access PDF
Sebuah komputer kuantum dapat memulihkan kunci dari setiap akun Ethereum yang kunci publiknya muncul di rantai. kami membuktikan bahwa tidak ada sidechain atau jembatan yang meninggalkan aturan Ethereum tidak berubah dapat melindungi akun tersebut: dana mereka harus pindah ke dalam kontrak yang kondisi rilisnya hanya bergantung pada primitif yang aman kuantum. kami merancang \emph{PQ-Vault}, sebuah sistem penyimpanan untuk Ethereum yang tidak dimodifikasi yang menggabungkan kolam ini, sebuah proof-of-stake sidechain yang aman kuantum yang checkpointnya membawa sertifikat kompak, dan protokol perselisihan yang optimis.
Machine translation (Meta M2M100); the English original follows.
A quantum computer could recover the key of any Ethereum account whose public key appears on chain. We prove that no sidechain or bridge that leaves Ethereum's rules unchanged can protect such accounts: their funds must move into a contract whose release condition relies only on quantum-safe primitives. We design \emph{PQ-Vault}, a custody system for unmodified Ethereum combining this vault, a quantum-safe proof-of-stake sidechain whose checkpoints carry compact certificates, and an optimistic dispute protocol. We give the first security proof of compact certificates against quantum attackers
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