Anonymous double-offline transaction method and system based on trusted intermediary and one-time certificate

Abstract

The invention discloses an anonymous double-offline transaction method and system based on a credible intermediary and a one-time certificate. The method comprises the following steps: a preparation stage: realizing near field communication between the credible intermediary and a money sending party as well as between the credible intermediary and a receiving party by using a communication method; in the double-offline transaction stage, near field communication between a money sending party and a receiving party is achieved through a communication method, and offline transaction is completed through a credible intermediary in the offline state; and an online transaction stage: confirming the transaction through the commercial bank and the central bank in an online state. The method has the beneficial effects that compared with the prior art, 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 an anonymous dual offline transaction method and system based on a trusted intermediary and a one-time certificate. 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] Patent No. CN201911053809 discloses an anonymous transaction method and system based on digital currency. The problem with this patent is that only online transactions can be performed, and the user’s temporary identity can only be followed by the subsequent transaction process when it is approved by its own server. When the user cannot communicate with its own server, the payee of this method cannot use th...

AI Technical Summary

Problems solved by technology

[0003] Patent No. CN201911053809 discloses an anonymous transaction method and system based on digital currency. The problem with this patent is that only online transactions can be performed, and the user’s temporary identity can only be followed by the subsequent transaction process when it is approved by its own server. When the user cannot communicate with its own server, the payee of this method cannot use the user's temporary identity to verify its digital signature on the transaction (in digital signatures based on digital certificates, since users need to hide their real identities, they cannot provide The digital certificate of its real identity, and cannot prove the association between its temporary identity and its digital certificate, so it cannot use its digital certificate to verify its digital signature on the transaction; in the digital signature based on ID cryptography, because the user needs to hide real identity, so cannot provide its real identity, and cannot prove the association between its temporary identity and its real identity, so it cannot use its real identity to verify its digital signature on the transaction), so the payee does not receive the payment It is impossible to recognize the legitimacy of this transaction and complete the entire transaction process without any identity certificate of the party, that is: the problem with this patented method is that it cannot perform dual offline transactions

Images