隨著量子信息技術的不斷突破以及對比特幣去中心化議題的熱烈討論，量子貨幣的思想也逐漸成為近來的關注焦點。因此，一些密碼學學者也紛紛提出了量子貨幣方案的設計。然而，它們的方案中大多數都要求客戶和銀行必須事先共享密鑰，並且只有銀行才能驗證量子貨幣的真實性。而這樣的設計方式，可能會遭受罪犯的攻擊，因為身份驗證過程不是即時性的，也因此，降低了商業交易的時效性。 由於這些原因，在本文中，我們基於chen等人可公開驗證的量子簽章以及量子盲簽名方案和其電子現金系統等基礎，提出了一種量子貨幣系統，此系統使用可公開驗證的量子簽章方案取得許可證，並通過量子貨幣簽章方案的現金系統架構來建立取款和支付協議。此外，我們還進行了相關的安全分析以支持我們的理論。 With the continuous breakthrough of quantum information technology and heat discussion of Bitcoin, the idea of quantum money has gradually become the attention focus recently. As such, several cryptographic scholars have proposed quantum money schemes. However, most of them require the customer and bank to share a secret key in advance, and only the bank can verify the authenticity of the quantum money. This may suffer criminals' attacks, because the authentication process is not real time. Thus, reduces the validity of commercial transactions. For these reasons, in this article, based on chen et al.'s publicly verifiable quantum signature and quantum blind signature schemes, and their electronic cash system, we propose a quantum money scheme that uses the publicly verifiable quantum signature scheme to obtain a license, and establish a withdrawal and a payment protocol through the usage of quantum blind signature by referring to their cash system architecture. In addition, we also make relevant security analysis to support our theory.
