> For the complete documentation index, see [llms.txt](https://support.cregis.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.cregis.com/cregis-wallet-guide/zh-tw/resources/faq/transaction/multi_signing.md).

# 為什麼多簽需要同時在線？

其他錢包透過分開簽名的方式實現多簽功能，其中一方完成簽名後，平台會將該方的分片存儲於雲端，然後等待另一方進行簽名。然而，這種方式相當於平台暫時擁有完整的私鑰，這樣的設計存在較大的安全風險。

為了保障用戶資產安全，Cregis 採用更嚴格的安全設計，避免此類操作。Cregis 的多簽功能基於 MPC（多方計算）技術，用戶的私鑰從未以完整形式存在。簽名過程中，各方分片透過加密協議實時交互完成簽名，無需任何一方將分片存儲於雲端，確保私鑰的絕對安全，同時消除了中心化存儲可能帶來的潛在風險。

因此，Cregis 的多簽需要各方同時在線，才能透過實時交互完成簽名，避免任何一方分片被存儲於雲端，從而保障私鑰始終安全。


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