One-time key anonymous double-offline transaction method and system based on digital currency

Abstract

The invention discloses a one-time secret key anonymous double-offline transaction method and system based on digital currency. The method comprises the steps that secret keys based on ID cryptography are issued to a money sending party and a receiving party through a secret key management server; using a communication method based on an ID cryptography one-time key to realize near field communication between the credible intermediary and the money sending party and between the credible intermediary and the money receiving party; near field communication between a money sending party and a receiving party is realized by using a communication method, and offline transaction is completed through a trusted intermediary in an offline state; and confirming the transaction through the commercial bank and the central bank in the online state. The method has the beneficial effects that the privacy information of the user can be better protected, so that the transaction (especially the double-offline transaction) is safer.

Description

technical field [0001] The invention relates to the field of information technology, in particular to a one-time key anonymous double offline transaction method based on digital currency. Background technique [0002] At present, with the rapid development of the times, the digital currency payment method is favored by more and more people. The digital currency payment tool (DC / EP, Digital Currency and Electronic Payment) is used as a digital alternative to cash banknotes. It is of great significance for building a cashless society. [0003] Chinese patent number CN201911053809 discloses an anonymous transaction method and system based on digital currency. The problem with this patent is that it can only conduct online transactions. The user’s temporary identity can only be followed by the subsequent transaction process when it is recognized by its own server. When the user cannot communicate with its own server, the payee of this method cannot use it. The user's temporary...

AI Technical Summary

Problems solved by technology

The problem with this patent is that it can only conduct online transactions. The user’s temporary identity can only be followed by the subsequent transaction process when it is recognized by its own server. When the user cannot communicate with its own server, the payee of this method cannot use it. The user's temporary identity verifies its digital signature on the transaction (in the digital signature based on digital certificate, because the user needs to hide the real identity, it is impossible to provide a digital certificate containing its real identity, and it is impossible to prove the relationship between its temporary identity and its digital certificate Therefore, it is impossible to use its digital certificate to verify its digital signature on transactions; in digital signatures based on ID cryptography, since users need to hide their real identities, they cannot provide their real identities, and cannot prove that their temporary identities are related to their authenticity. Therefore, it is impossible to use its real identity to verify its digital signature on the transaction), so the payee cannot recognize the legitimacy of the transaction and complete the entire transaction without receiving any identity certificate from the sender process, that is: the problem with this patented method is that it cannot perform dual offline transactions

Images