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Blockstream 發布 SHRINCS 量子安全簽名方案 BIP

2026-08-27 09:43:18

ChainCatcher 消息,Blockstream 發布比特幣改進提案(BIP),提出 SHRINCS 後量子簽名方案。SHRINCS 是基於哈希的後量子簽名方案,最小尺寸為 548 字節,約為現有 Schnorr 簽名的 9 倍,但遠小於 NIST 批准的 ML-DSA 和 SPHINCS+ 方案。該方案已在 Liquid 側鏈上完成生產環境測試,並包含比特幣白皮書副本。

該方案也存在局限。BIP 警告安全證明仍待完成,且方案是有狀態的,每次簽名需存儲已用密鑰,簽名會隨使用次數增加 16 字節,設備丟失時需約 5777 字節的無狀態回退交易恢復。Blockstream 估計採用 SHRINCS 後比特幣可維持約 3 TPS 的速度,若結合 ZK 證明聚合可提升至 6.7 TPS。

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