Method and system for providing digital currency

Abstract

The present invention provides a method and system for providing digital currency, which can obtain digital currency flexibly and conveniently by using user terminal equipment to extract digital currency. The method includes: the user terminal sends the first request to the commercial bank digital currency system; the commercial bank digital currency system withdraws the digital currency from the account according to the amount specified by the first request; and sends the second request to the central bank digital currency system System; the central bank digital currency system receives the second request, executes the operation of the preset project according to the second request and returns an indication of successful operation to the commercial bank digital currency system, and the operation of the preset project includes the operation of the commercial bank digital currency system The extracted digital currency is operated to change the owner; the digital currency system of the commercial bank sends the extracted digital currency to the user terminal after receiving the instruction of successful operation.

Description

technical field [0001] The invention relates to the technical field of computer network and computer software, in particular to a method and system for providing digital currency. Background technique [0002] Digital currency is a currency that converts cash values ​​into a series of electronically encrypted serial numbers. The security of the currency itself depends on cryptographic algorithms for protection. In terms of cryptographic algorithms, the security of digital currency systems involves symmetric ciphers, asymmetric ciphers, message digest algorithms, and identity-based cryptographic systems. In terms of system implementation, the overall security of cryptographic systems, the selection of cryptographic algorithms, and cryptographic algorithms must be deeply considered. The implementation of algorithms, the design of interactive protocols, the compatibility of international and domestic standards, etc., ensure the security of digital currency transactions. [000...

AI Technical Summary

Problems solved by technology

[0010] 2. Non-repeatable spending: digital currency can only be used once, and repeated spending can be easily checked;

[0011] 3. Controllable anonymity: Banks and merchants cannot track the use of digital currency even if they collude with each other. It is required that the system cannot link the purchase behavior of users of electronic cash together, thereby concealing the purchase history of digital currency users. However, the issuer of digital currency Use of digital currency can be tracked;

[0012] 4. Unforgeability: Users cannot forge fake digital currency;

Using bank cards as the media limits the need to be able to identify and operate bank cards in order to use digital currency, which greatly limits the widespread use and circulation of digital currency

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