Receiver offline digital currency anti-quantum computing anonymous transaction method based on ID cryptography

Abstract

The invention provides a receiver offline digital currency anti-quantum computing anonymous transaction method based on ID cryptography. The method comprises the following steps that S1, identity authentication is carried out on a commercial bank digital currency system and a central bank digital currency system; s2, performing identity authentication on an online user and a commercial bank digital currency system; and S3, the receiver is offline, the sender is an online user, and the two parties carry out digital currency anonymous transaction. According to the method, offline of a receiver resisting quantum computing and digital currency anonymous transaction based on ID cryptography can be realized, the security degree is high, management is convenient, and the system transformation cost can be saved.

Description

technical field [0001] The invention relates to the technical field of identity authentication, in particular to an ID cryptography-based anti-quantum computing anonymous transaction method of a digital currency whose recipient 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...

AI Technical Summary

Problems solved by technology

[0006] 1. The CA certification and IBC certification in the existing digital currency system cannot resist quantum computing;

[0007] 2. In the existing anti-quantum computing communication system based on quantum secure communication, the cost is too high for users and the management of symmetric keys is complicated;

[0008] 3. In the existing anti-quantum computing communication system based on the asymmetric key pool, it is necessary to generate the public key of all members into the asymmetric key pool and store it in each key card, which increases the storage cost of the client key card and operational workload;

[0009] 4. In the existing anti-quantum computing communication system based on asymmetric key pools, the overall process and data structure of the traditional CA authentication and IBC authentication systems have been changed, resulting in switching of the CA authentication and IBC authentication systems and their corresponding user application systems The cost of anti-quantum computing solutions is too high;

[0010] 5. In the existing digital currency communication system, the identities of the sender and the payee are public, which may easily cause user privacy leakage

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