Sending party off-line anti-quantum computing transaction method and system based on digital currency

Abstract

The invention discloses a sender off-line anti-quantum computing transaction method and system based on digital currency. The method comprises the following steps that S1, a key management server is used for issuing system public and private keys to a central bank digital currency system, a commercial bank digital currency system and a user; s2, realizing identity authentication between the commercial bank digital currency system and the central bank digital currency system; s3, realizing identity authentication between the user and the commercial bank digital currency system; and S4, realizing offline digital currency transactions of senders among different users. The method has the beneficial effects that an anti-quantum computing sender off-line digital currency communication system based on ID cryptography can be realized, and by using a secret key issuing service based on the ID cryptography, the complexity of system building and upgrading is reduced, and the control capability of a central bank on a commercial bank is enhanced.

Description

Technical field [0001] The present invention relates to the field of digital currency, and in particular to a sender's offline anti-quantum computing transaction method and system based on digital currency. Background technique [0002] The core elements of the People's Bank of China's digital currency D-RMB system are one currency, two types of libraries and three centers. A kind of currency, namely "D-RMB" (DC / EP), referred to as D currency, specifically refers to a string of encrypted numbers signed by the central bank representing a specific amount. Two types of libraries: D-RMB’s issuance library and bank library (central bank digital currency database, commercial bank digital currency database). Digital currency appears in the issuance library as the central bank's digital currency fund; digital currency appears in the bank library as the digital cash inventory of commercial banks. Three centers: one is the registration center (records the entire process of currency ...

AI Technical Summary

Problems solved by technology

[0006] 1. In the technical solution proposed by patent CN109861813A, the client needs to configure a quantum key card that stores the public keys of all members, which increases the storage cost and operational workload of the client key card, and the key management work of the client more complex;

[0007] 2. In the technical solution proposed by the patent CN109861813A, the overall process and data structure of the traditional CA and the digital signature system based on digital certificates are changed, for example, the format and usage of digital certificates are changed, and the CA and user application systems are switched to The cost of quantum-resistant computing solutions is too high

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