Method and system for exchanging cash for digital currency

A technology of digital currency and cash, which is applied in the field of computer network and computer software, can solve the problems of unforgeability, linking together, inability to exchange digital currency, etc., and achieve the effect of realizing security and unified management and enhancing security

Active Publication Date: 2021-03-30
THE PEOPLES BANK OF CHINA DIGITAL CURRENCY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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;
Especially when the user does not have a bank account in a commercial bank or when the balance of the user's bank account is insufficient, it will not be possible to exchange digital currency through the mobile terminal

Method used

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  • Method and system for exchanging cash for digital currency
  • Method and system for exchanging cash for digital currency
  • Method and system for exchanging cash for digital currency

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Embodiment Construction

[0042] Exemplary embodiments of the present invention are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present invention to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

[0043] In the embodiment of the present invention, the design scheme of digital currency based on cryptographic mathematics (hereinafter referred to as D-RMB) is described, and the main operation mode is that the central bank and commercial banks build the D-RMB system hierarchically. The central bank here is the issuer of the currency, such as the People's Bank of China. ...

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Abstract

The present invention provides a method and system for exchanging cash for digital currency, which can obtain digital currency flexibly and conveniently, and satisfies the needs of people at different levels for digital currency acquisition. The method includes: the commercial bank outlet system sends a first request to the commercial bank digital currency system, the first request includes the user terminal identification; the commercial bank digital currency system withdraws the digital currency from the account of the commercial bank according to the amount specified by the first request and send the second request to the central bank's digital currency system; the central bank's digital currency system receives the second request, and executes the operation of the preset project according to the second request and returns an indication of successful operation to the commercial bank's digital currency system, pre-set The operation of the project includes the operation of changing the owner of the digital currency extracted by the commercial bank digital currency system; the commercial bank digital currency system 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 exchanging cash for 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 transaction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q20/06G06Q20/10G06Q20/32G06Q20/36G06Q20/38G06Q40/02
CPCG06Q20/065G06Q20/105G06Q20/3227G06Q20/3674G06Q20/3829G06Q40/03
Inventor 姚前李会锋温信祥李连三王栋兵刘浩赵欣唐晓雪刘文舒
Owner THE PEOPLES BANK OF CHINA DIGITAL CURRENCY INST
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