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研究:約 2.96 萬物理量子比特可在約 1 小時破解比特幣密鑰

2026-10-29 23:32:51

ChainCatcher 消息,据 Bitcoin.com 報導,量子計算公司 Alice \& Bob 的研究估算,具備約 29,588 個物理量子比特的容錯量子計算機,可在約 61.8 分鐘內求解比特幣所用的 256 位橢圓曲線密碼學問題。該問題支撐比特幣交易授權所使用的數字簽名,研究結果屬於理論資源估算,並不代表現有量子計算機已具備破解能力。

研究還估算,22,593 個物理量子比特可在約 3.14 天內破解 RSA-2048 加密。相關計算採用旨在降低量子錯誤的 cat qubits 技術,並結合更高效的糾錯碼及針對 Shor 算法的改進。

若足夠強大的量子計算機能夠從已公開的公鑰推導出私鑰,相關比特幣可能面臨未經授權簽名和資產被盜風險。研究估算的破解時間仍長於比特幣約 10 分鐘的平均區塊間隔;約 690 萬枚比特幣因對應公鑰已公開而可能面臨風險。

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