Sending party offline digital currency anti-quantum computing transaction method and system

Abstract

The invention discloses a sender offline digital currency anti-quantum computing transaction method and system. The method comprises the following steps: S1, issuing anti-quantum computing devices to a client and a commercial bank digital currency system by using a key management server; s2, respectively issuing root certificates to the user side and the commercial bank digital currency system by using a certificate issuing mechanism according to a root certificate issuing method, and storing the root certificates into the corresponding anti-quantum computing devices; s3, respectively issuing certificates to the user side and the commercial bank digital currency system by using the certificate issuing mechanism through a certificate issuing method, and storing the certificates into the corresponding anti-quantum computing devices; and S4, realizing offline digital currency transaction of the sender user side by using a currency transaction method. The digital currency communication system has the beneficial effects that the digital currency communication system capable of resisting quantum computing and based on offline of the digital certificate sender can be realized, and the improvement cost of the system is also taken into account.

Description

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

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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