CN110599140B - Digital currency verification method and system - Google Patents

Abstract

The invention discloses a method and a system for verifying digital currency, and relates to the technical field of computers. One embodiment of the method comprises: the digital currency terminal receives digital currency from the digital currency delivery system; and verifying the digital currency received from the digital currency delivery system by using a second public key of the digital currency delivery system, wherein the digital currency is generated according to the credit control bits, the identification information of the owner of the digital currency and the signature information of the digital currency delivery system. According to the embodiment, the generated digital currency is verified, so that the risks of tampering and counterfeiting of the digital currency in the circulation process are reduced, and the circulation safety of the digital currency is improved.

Description

A digital currency verification method and system

technical field

The invention relates to the field of computer technology, in particular to a method and system for verifying digital currency.

Background technique

Digital currency can reduce the issuance and circulation costs of banknotes, improve the convenience and transparency of transactions, reduce regulatory costs, and enhance the central bank’s control over money supply and circulation.

At present, under the premise of ensuring that the currency issuance rights and monetary policy operations of the central management system (such as the central bank) are not affected, the central management system can authorize qualified currency delivery institutions to operate digital currency. Specifically, the central management system can set specific currency issuance rules, so that the currency delivery institution operates the digital currency according to the currency issuance rules.

Since the essence of digital currency is a piece of disintermediate digital information, digital currency needs to have anti-counterfeiting, anti-tampering, and anti-copying capabilities to ensure the security of digital currency in the process of circulation.

SUMMARY OF THE INVENTION

In view of this, embodiments of the present invention provide a method and system for verifying digital currency, which can avoid malicious tampering of digital currency in the process of generation and circulation, and enhance the security in the process of generation and circulation of digital currency.

In order to achieve the above purpose, according to the first aspect of the embodiments of the present invention, a digital currency delivery system is provided, including: a quota control bit verification module and a currency generation module; wherein, the digital currency delivery system applies to the quota control system to obtain The quota control bit for generating digital currency, the quota control bit indicates the amount of money generated and the identification information of the digital currency delivery system; the quota control bit verification module is used to use the first public key of the quota control system to pair the quota obtained from the quota control system The control bit is verified; the currency generation module is used to generate and send digital currency to the digital currency terminal when the quota control bit is verified, wherein the digital currency is based on the quota control bit, the identification information of the digital currency owner, and the digital currency. The system signature information is generated.

Further, the quota control bit is composed of the identification information of the digital currency delivery system, the transaction identifier corresponding to the digital currency, the amount of money generated, and the signature information of the quota control system.

Further, the signature information of the quota control system is generated according to the following steps: use the SM3 algorithm to calculate the amount of money generated, the identification information of the digital currency delivery system, and the transaction identification to generate a first summary; use the SM2 algorithm to control the system with the quota. The first private key of the system encrypts the first digest to generate the signature information of the quota control system; uses the first public key of the quota control system to verify the quota control bits obtained from the quota control system, including: using the SM3 algorithm to generate currency Calculate the amount, the identification information of the digital currency delivery system, and the transaction identifier corresponding to the digital currency to generate a first abstract; use the SM2 algorithm to decrypt the signature information of the quota control system with the first public key of the quota control system to obtain the first summary. Abstract plaintext; determine whether the first abstract is consistent with the first abstract plaintext, and if they are consistent, the verification is passed.

Further, the signature information of the digital currency delivery system is generated according to the following steps: use the SM3 algorithm to calculate the quota control bit and the identification information of the digital currency owner, and generate a second abstract; use the SM2 algorithm to use the digital currency delivery system. The second private key encrypts the second digest to generate the signature information of the digital currency delivery system.

According to a second aspect of the embodiments of the present invention, a digital currency terminal is provided, including: a digital currency receiving module and a digital currency verification module; wherein the digital currency receiving module is used for receiving digital currency from a digital currency delivery system; digital currency The verification module is used to verify the digital currency received from the digital currency delivery system using the second public key of the digital currency delivery system, wherein the digital currency is based on the quota control bit, the identification information of the digital currency owner, and the digital currency delivery. The system signature information is generated.

Further, the digital currency terminal further includes a quota control bit verification module for verifying the quota control bit indicated in the digital currency by using the first public key of the quota control system.

Further, using the first public key of the quota control system to verify the quota control bits indicated in the digital currency, including: using the SM3 algorithm to calculate the currency generation amount, the identification information of the digital currency delivery system, and the transaction identifier corresponding to the digital currency. , generate the first abstract; use the SM2 algorithm to decrypt the signature information of the quota control system with the first public key of the quota control system to obtain the first abstract plaintext; judge whether the first abstract is consistent with the first abstract plaintext, if they are consistent, The verification is passed.

Further, the digital currency terminal also includes a quota control bit verification module, which is used to send the quota control bit indicated in the digital currency to the digital currency verification server, and accept the verification result of the quota control bit by the digital currency verification server.

Further, using the second public key of the digital currency delivery system to verify the digital currency received from the digital currency delivery system includes: using the SM3 algorithm to calculate the quota control bit and the identification information of the digital currency owner to obtain the second public key. Abstract: Use the SM2 algorithm to decrypt the signature information of the digital currency delivery system with the second public key of the digital currency delivery system to obtain the second abstract plaintext; judge whether the second abstract and the second abstract plaintext are consistent, if they are consistent, verify pass.

According to a third aspect of the embodiments of the present invention, there is provided a method for verifying digital currency, applied to a digital currency terminal, comprising: receiving digital currency from a digital currency delivery system; using a second public key pair of the digital currency delivery system The digital currency received from the digital currency delivery system is verified, wherein the digital currency is generated according to the quota control bit, the identification information of the digital currency owner, and the signature information of the digital currency delivery system.

Further, the quota control bit indicated in the digital currency is verified by using the first public key of the quota control system.

Further, using the first public key of the quota control system to verify the quota control bits indicated in the digital currency, including: using the SM3 algorithm to calculate the currency generation amount, the identification information of the digital currency delivery system, and the transaction identifier corresponding to the digital currency. , generate the first abstract; use the SM2 algorithm to decrypt the signature information of the quota control system with the first public key of the quota control system to obtain the first abstract plaintext; judge whether the first abstract is consistent with the first abstract plaintext, if they are consistent, The verification is passed.

Further, the quota control bit indicated in the digital currency is sent to the digital currency verification server, and the verification result of the quota control bit by the digital currency verification server is accepted.

Further, using the second public key of the digital currency delivery system to verify the digital currency received from the digital currency delivery system includes: using the SM3 algorithm to calculate the quota control bit and the identification information of the digital currency owner to obtain the second public key. Abstract: Use the SM2 algorithm to decrypt the signature information of the digital currency delivery system with the second public key of the digital currency delivery system to obtain the second abstract plaintext; judge whether the second abstract and the second abstract plaintext are consistent, if they are consistent, verify pass.

According to a fourth aspect of the embodiments of the present invention, a digital currency generation system is provided, including any of the above-mentioned digital currency delivery systems and any of the above-mentioned digital currency terminals.

Further, the digital currency generation system further includes a central management system, and the central management system includes a digital currency transaction recording module for recording the digital currency generated by the digital currency delivery system and the transaction process of the digital currency.

According to a fifth aspect of the embodiments of the present invention, there is provided a server, comprising: one or more processors; and a storage device for storing one or more programs, when the one or more programs are processed by one or more The processor executes, so that the above-mentioned one or more processors implement any one of the above-mentioned digital currency verification methods.

According to a sixth aspect of the embodiments of the present invention, there is provided a computer-readable medium on which a computer program is stored, characterized in that, when the program is executed by a processor, any one of the above-mentioned digital currency verification methods is implemented.

One embodiment of the above invention has the following advantages or beneficial effects: after receiving the digital currency from the digital currency delivery system, the digital currency terminal uses the second public key of the digital currency delivery system to pair the digital currency received from the digital currency delivery system. Verify that the digital currency is generated according to the quota control bit, the identification information of the digital currency terminal, and the signature information of the digital currency delivery system. Therefore, by verifying the generated digital currency, the risk of digital currency being tampered and forged during the circulation process is avoided.

Further effects of the above non-conventional alternatives will be described below in conjunction with specific embodiments.

Description of drawings

The accompanying drawings are used for better understanding of the present invention and do not constitute an improper limitation of the present invention. in:

1 is a schematic structural diagram of a digital currency delivery system provided according to an embodiment of the present invention;

2 is a schematic structural diagram of a digital currency terminal provided according to an embodiment of the present invention;

Fig. 3 is the main flow chart of the verification method of digital currency provided according to the embodiment of the present invention;

4 is a schematic structural diagram of a digital currency generation system provided by an embodiment of the present invention;

5 is an exemplary system architecture diagram to which an embodiment of the present invention may be applied;

FIG. 6 is a schematic structural diagram of a computer system suitable for implementing a terminal device or a server according to an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, which include various details of the embodiments of the present invention to facilitate understanding and should be considered as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted from the following description for clarity and conciseness.

1 is a digital currency delivery system 200 provided according to an embodiment of the present invention, wherein the digital currency delivery system 200 applies to the quota control system 100 to obtain a quota control bit for generating digital currency, and the quota control bit indicates the currency generation The amount and the identification information of the digital currency delivery system 200 . As shown in FIG. 1, the digital currency delivery system 200 includes:

The quota control bit verification module 201 is used to use the first public key of the quota control system 100 to verify the quota control digits obtained from the quota control system 100; the above quota control digits correspond to the identification information and digital currency of the digital currency delivery system 200 It consists of the transaction identifier, the amount of money generated, and the signature information of the quota control system 100.

The signature information of the quota control system 100 means that the quota control system 100 uses an algorithm (such as the SM3 algorithm) to calculate the amount of money generated, the identification information of the digital currency delivery system 200, and the transaction identifier corresponding to the digital currency to obtain a combined summary, and then use the The private key is obtained by signing the combined digest.

Specifically, the signature information of the quota control system 100 is generated according to the following steps:

Using the SM3 algorithm to calculate the amount of money generated, the identification information of the digital currency delivery system 200, and the transaction identification to generate a first digest; using the SM2 algorithm to encrypt the first digest with the first private key of the quota control system 100 to generate a quota Signature information of the control system 100 .

Further, the above-mentioned use of the first public key of the quota control system 100 to verify the quota control bits obtained from the quota control system 100 includes: using the SM3 algorithm to generate the amount of money, the identification information of the digital currency delivery system 200, and the corresponding digital currency. The transaction identifier is calculated to generate the first abstract; the SM2 algorithm is used to decrypt the signature information of the quota control system 100 with the first public key of the quota control system 100 to obtain the first abstract plaintext; Whether the plaintext is consistent, if so, the verification is passed.

The currency generation module 202 is used to generate and send digital currency to the digital currency terminal 300 when the quota control bit is verified, wherein the digital currency is based on the quota control bit, the identification information of the digital currency owner, and the digital currency delivery system 200. The signature information is generated.

The signature information of the digital currency delivery system 200 refers to that the digital currency delivery system 200 uses an algorithm (such as the SM3 algorithm) to calculate the quota control bit and the identification information of the digital currency terminal 300 to obtain a combined abstract, and then use its private key to the combined abstract. obtained by signing.

Specifically, the signature information of the digital currency delivery system 200 is generated according to the following steps: using the SM3 algorithm to calculate the quota control bit and the identification information of the digital currency owner to generate a second abstract; using the SM2 algorithm to deliver the system with digital currency The second private key of 200 encrypts the second digest to generate signature information of the digital currency delivery system 200 .

When the digital currency delivery system receives the quota control bit for generating digital currency, it does not directly generate the digital currency corresponding to the amount according to the received quota control bit, but first verifies the quota control bit to determine the quota control bit The signature information of the quota control system ensures that the quota control bit has not been tampered with or forged during the transmission process. When the verification is passed, the corresponding amount of digital currency can be generated according to the quota control bit, which not only realizes the digital currency delivery system. Regulatory control also effectively enhances the security of digital currency in the generation process, avoiding losses caused by tampering and forgery of quota control bits in the process of digital currency generation.

FIG. 2 is a schematic structural diagram of a digital currency terminal provided according to an embodiment of the present invention. As shown in FIG. 2 , the digital currency terminal 300 includes:

The digital currency receiving module 301 is used for receiving digital currency from the digital currency delivery system;

The digital currency verification module 302 is used to verify the digital currency received from the digital currency delivery system 200 using the second public key of the digital currency delivery system 200, wherein the digital currency is based on the quota control bit, the owner of the digital currency terminal 300 The identification information and the signature information of the digital currency delivery system 200 are generated.

Specifically, the above-mentioned use of the second public key of the digital currency delivery system to verify the digital currency received from the digital currency delivery system includes: using the SM3 algorithm to calculate the quota control bit and the identification information of the digital currency owner, and obtain the first Second abstract; use the SM2 algorithm to decrypt the signature information of the digital currency delivery system with the second public key of the digital currency delivery system to obtain the second abstract plaintext; judge whether the second abstract and the second abstract plaintext are consistent, if they are consistent, then Verification passed.

Further, the above-mentioned digital currency terminal 300 further includes a quota control bit verification module 303 for verifying the quota control bit indicated in the digital currency by using the first public key of the quota control system 100 .

In addition, according to a specific implementation of the embodiment of the present invention, the quota control bit verification module included in the digital currency terminal 300 can also be used to send the quota control bit indicated by the digital currency to the digital currency verification server, and accept the digital currency. Verify the verification result of the quota control bit by the verification server.

Through the above settings, two ways of verifying the quota control bits are realized, that is, on the one hand, the quota control bits can be verified directly through the digital currency terminal, and on the other hand, the quota control bits can be sent to the digital currency verification server for verification. During specific implementation, the verification of the quota control bit can be realized by adopting any one of the above verification methods.

Among them, the verification process of the above quota control bit includes: using the SM3 algorithm to calculate the amount of money generated, the identification information of the digital currency delivery system, and the transaction identifier corresponding to the digital currency to generate a first summary; using the SM2 algorithm to control the system with the quota The first public key decrypts the signature information of the quota control system to obtain the first digest plaintext; it is judged whether the first digest is consistent with the first digest plaintext, and if they are consistent, the verification is passed.

Fig. 3 is the main flow chart of the verification method of the digital currency provided according to the embodiment of the present invention, as shown in Fig. 3, the embodiment of the present invention provides a kind of verification method of the digital currency applied to the digital currency terminal, including:

Step S31, receiving digital currency from the digital currency delivery system.

Further, the above verification method for digital currency further includes step S311 , using the first public key of the quota control system to verify the quota control bit indicated in the digital currency.

In addition, according to a specific implementation of the embodiment of the present invention, the above-mentioned verification method for digital currency further includes step S312, sending the quota control bit indicated in the digital currency to the digital currency verification server, and accepting the digital currency verification server to verify the quota The verification result of the control bit.

Among them, the above-mentioned verification of the quota control bit indicated in the digital currency includes: using the SM3 algorithm to calculate the amount of money generated, the identification information of the digital currency delivery system, and the transaction identifier corresponding to the digital currency to generate a first summary; using the SM2 algorithm, Decrypt the signature information of the quota control system with the first public key of the quota control system to obtain the first abstract plaintext; determine whether the first abstract and the first abstract plaintext are consistent, and if they are consistent, the verification is passed.

Step S32, using the second public key of the digital currency delivery system to verify the digital currency received from the digital currency delivery system, wherein the digital currency is based on the quota control bit, the identification information of the digital currency owner , generated from the signature information of the digital currency delivery system.

Specifically, using the second public key of the digital currency delivery system to verify the digital currency received from the digital currency delivery system includes: using the SM3 algorithm to perform operations on the quota control bit and the identification information of the digital currency owner to obtain the second public key. Abstract: Use the SM2 algorithm to decrypt the signature information of the digital currency delivery system with the second public key of the digital currency delivery system to obtain the second abstract plaintext; judge whether the second abstract and the second abstract plaintext are consistent, if they are consistent, verify pass.

After the digital currency terminal receives the digital currency, it first verifies the received digital currency, and the verification is passed, and then the transaction is confirmed. At the same time, the digital currency delivery system or the central management system can also verify the generated digital currency, which not only realizes the comprehensive inspection of the digital currency generation and circulation process, but also avoids the digital currency being tampered or tampered with during the generation and circulation process. Forgery can also realize the comprehensive management and control of digital currency by the central management system, digital currency delivery system and currency terminal, and further improve the circulation security of digital currency.

FIG. 4 is a digital currency generation system provided according to an embodiment of the present invention. As shown in FIG. 4 , the digital currency generation system includes:

Any of the above-mentioned digital currency delivery systems 200 and any of the above-mentioned digital currency terminals 300 .

The digital currency delivery system 200 applies to the quota control system 100 to obtain a quota control bit for generating digital currency, where the quota control bit indicates the amount of money generated and the identification information of the digital currency delivery system 200 . The digital currency delivery system 200 includes:

The quota control bit verification module 201 is used to use the first public key of the quota control system 100 to verify the quota control digits obtained from the quota control system 100; the above quota control digits correspond to the identification information and digital currency of the digital currency delivery system 200 It consists of the transaction identifier, the amount of money generated, and the signature information of the quota control system 100.

The currency generation module 202 is used to generate and send digital currency to the digital currency terminal 300 when the quota control bit is verified, wherein the digital currency is based on the quota control bit, the identification information of the digital currency owner, and the digital currency delivery system 200. The signature information is generated.

The digital currency terminal 300 includes:

a digital currency receiving module 301 for receiving digital currency from the digital currency delivery system 200;

The digital currency verification module 302 is used to verify the digital currency received from the digital currency delivery system 200 using the second public key of the digital currency delivery system 200, wherein the digital currency is based on the quota control bit and the identity of the digital currency owner. Information and signature information of the digital currency delivery system 200 are generated.

Further, the above-mentioned digital currency generation system also includes a central management system 400, the central management system 400 is connected with the digital currency delivery system 200, and the central management system 400 includes a digital currency transaction record module 401 for recording the digital currency delivery system generated. digital currency, and the transaction process of the digital currency.

Specifically, the digital currency transaction recording module 401 records all the information in the process of digital currency generation and circulation, so as to facilitate subsequent spot checks and audit processing. In a specific embodiment, the central management system is constructed with a big data platform (ie, the above-mentioned digital currency transaction record module) for summarizing the transaction records uploaded by the digital currency delivery system. Therefore, through the big data platform, the central management system can not only verify the digital currency and the quota control bit indicated by the digital currency, but also build a transaction model through transaction records to track whether there are forged transaction records and numbers in the digital currency delivery system. The situation of currency further improves the security of digital currency in the process of generation and transaction.

An embodiment of the present invention also provides a server, including: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, one or more programs A plurality of processors implement the verification method of any one of the above-mentioned digital currencies.

FIG. 5 shows an exemplary system architecture 500 of a verification method for digital currency or a verification system for digital currency to which embodiments of the present invention can be applied.

As shown in FIG. 5 , the system architecture 500 may include terminal devices 501 , 502 , and 503 , a network 504 and a server 505 . The network 504 is a medium used to provide a communication link between the terminal devices 501 , 502 , 503 and the server 505 . Network 504 may include various connection types, such as wired, wireless communication links, or fiber optic cables, among others.

The user can use the terminal devices 501, 502, 503 to interact with the server 505 through the network 504 to receive or send messages and the like. Various communication client applications may be installed on the terminal devices 501 , 502 and 503 , such as shopping applications, web browser applications, search applications, instant messaging tools, email clients, social platform software, and the like.

The terminal devices 501, 502, 503 may be various electronic devices having a display screen and supporting web browsing, including but not limited to smart phones, tablet computers, laptop computers, desktop computers, and the like.

The server 505 may be a server that provides various services, for example, a background management server that provides support for shopping websites browsed by the terminal devices 501 , 502 , and 503 . The background management server can analyze and process the received product information query request and other data, and feed back the processing results (such as target push information, product information—just an example) to the terminal device.

It should be noted that the verification method of digital currency provided by the embodiment of the present invention is generally performed by the server 505 , and accordingly, the verification system of the digital currency is generally set in the server 505 .

It should be understood that the numbers of terminal devices, networks and servers in FIG. 5 are only illustrative. There can be any number of terminal devices, networks and servers according to implementation needs.

Embodiments of the present invention also provide a computer-readable medium on which a computer program is stored, and when the program is executed by a processor, implements any of the foregoing digital currency verification methods.

Referring to FIG. 6 below, it shows a schematic structural diagram of a computer system 600 suitable for implementing a terminal device according to an embodiment of the present invention. The terminal device shown in FIG. 6 is only an example, and should not impose any limitations on the functions and scope of use of the embodiments of the present invention.

As shown in FIG. 6, a computer system 600 includes a central processing unit (CPU) 601, which can be loaded into a random access memory (RAM) 603 according to a program stored in a read only memory (ROM) 602 or a program from a storage section 608 Instead, various appropriate actions and processes are performed. In the RAM 603, various programs and data necessary for the operation of the system 600 are also stored. The CPU 601 , the ROM 602 , and the RAM 603 are connected to each other through a bus 604 . An input/output (I/O) interface 605 is also connected to bus 604 .

The following components are connected to the I/O interface 605: an input section 606 including a keyboard, a mouse, etc.; an output section 607 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 608 including a hard disk, etc. ; and a communication section 609 including a network interface card such as a LAN card, a modem, and the like. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to the I/O interface 605 as needed. A removable medium 611, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is mounted on the drive 610 as needed so that a computer program read therefrom is installed into the storage section 608 as needed.

In particular, the processes described above with reference to the flowcharts may be implemented as computer software programs in accordance with the disclosed embodiments of the present invention. For example, embodiments disclosed herein include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the method illustrated in the flowchart. In such an embodiment, the computer program may be downloaded and installed from the network via the communication portion 609 and/or installed from the removable medium 611 . When the computer program is executed by the central processing unit (CPU) 601, the above-described functions defined in the system of the present invention are performed.

It should be noted that the computer-readable medium shown in the present invention may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the above two. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above. More specific examples of computer readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable Programmable read only memory (EPROM or flash memory), fiber optics, portable compact disk read only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. In the present invention, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present invention, however, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code therein. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device . Program code embodied on a computer readable medium may be transmitted using any suitable medium including, but not limited to, wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more functions for implementing the specified logical function(s) executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams or flowchart illustrations, and combinations of blocks in the block diagrams or flowchart illustrations, can be implemented in special purpose hardware-based systems that perform the specified functions or operations, or can be implemented using A combination of dedicated hardware and computer instructions is implemented.

The modules involved in the embodiments of the present invention may be implemented in a software manner, and may also be implemented in a hardware manner. The described module can also be provided in the processor, for example, it can be described as: a processor includes a limit control bit verification module and a currency generation module, the names of these modules in some cases do not constitute the module itself. Definitions, for example, the credit control bit verification module can be described as "a module that verifies the credit control bit".

As another aspect, the present invention also provides a computer-readable medium, which may be included in the device described in the above embodiments; or may exist alone without being assembled into the device. The above-mentioned computer-readable medium carries one or more programs, and when the above-mentioned one or more programs are executed by a device, the device includes: receiving digital currency from the digital currency delivery system; using a second public system of the digital currency delivery system; The key pair verifies the digital currency received from the digital currency delivery system, wherein the digital currency is generated according to the quota control bit, the identification information of the digital currency owner, and the signature information of the digital currency delivery system.

According to the technical solution of the embodiment of the present invention, after receiving the digital currency, the digital currency terminal first verifies the received digital currency, and the verification is passed, and then the transaction is confirmed. At the same time, the digital currency delivery system or the central management system can also verify the generated digital currency, which not only realizes the comprehensive inspection of the digital currency generation and circulation process, but also avoids the digital currency being tampered or tampered with during the generation and circulation process. Forgery can also realize the comprehensive management and control of digital currency by the central management system, digital currency delivery system and currency terminal, and further improve the circulation security of digital currency.

The above-mentioned specific embodiments do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (17)

1. A digital currency delivery system, comprising: the credit control position verifying module and the currency generating module; the digital currency putting system applies for obtaining a credit control position for generating digital currency from a credit control system, wherein the credit control position consists of identification information of the digital currency putting system, a transaction identification corresponding to the digital currency, currency generation amount and signature information of the credit control system;

the credit control position verification module is used for verifying the credit control position obtained from the credit control system by using a first public key of the credit control system;

and the currency generating module is used for generating and sending the digital currency to a digital currency terminal when the credit control position passes verification, wherein the digital currency is generated according to the credit control position, the identification information of a digital currency owner and the signature information of a digital currency putting system.

2. The digital money delivery system according to claim 1,

the signature information of the quota control system is generated according to the following steps:

calculating the currency generation amount, the identification information of the digital currency putting system and the transaction identification by using an SM3 algorithm to generate a first abstract;

encrypting the first summary by using a first private key of the credit control system by using an SM2 algorithm to generate signature information of the credit control system;

the verifying the credit control bit obtained from the credit control system by using the first public key of the credit control system comprises the following steps:

calculating the currency generation amount, the identification information of the digital currency putting system and the transaction identification by using an SM3 algorithm to generate a first abstract;

decrypting the signature information of the credit control system by using a first public key of the credit control system by using an SM2 algorithm to obtain a first abstract plaintext;

and judging whether the plaintext of the first abstract is consistent with that of the first abstract, and if so, passing the verification.

3. The digital money delivery system according to claim 1, wherein the signature information of the digital money delivery system is generated according to the steps of:

calculating the credit control bit and the identification information of the digital currency owner by using an SM3 algorithm to generate a second abstract;

encrypting the second digest with a second private key of the digital currency delivery system using the SM2 algorithm to generate signature information for the digital currency delivery system.

4. A digital money terminal, comprising: a digital currency receiving module and a digital currency verification module; wherein,

the digital currency receiving module is used for receiving digital currency from the digital currency putting system;

the digital currency verification module is used for verifying the digital currency received from the digital currency putting system by using a second public key of the digital currency putting system, wherein the digital currency is generated according to a quota control bit, identification information of a digital currency owner and signature information of the digital currency putting system; the credit control position consists of identification information of the digital currency putting system, transaction identification corresponding to the digital currency, currency generation amount and signature information of the credit control system.

5. The digital currency terminal according to claim 4, further comprising a credit control bit verification module for verifying the credit control bit indicated in the digital currency using the first public key of the credit control system.

6. The digital currency terminal according to claim 5, wherein the verifying the credit control bits indicated in the digital currency using the first public key of the credit control system comprises:

calculating the currency generation amount, the identification information of the digital currency putting system and the transaction identification corresponding to the digital currency by using an SM3 algorithm to generate a first abstract;

decrypting the signature information of the credit control system by using a first public key of the credit control system by using an SM2 algorithm to obtain a first abstract plaintext;

and judging whether the plaintext of the first abstract is consistent with that of the first abstract, and if so, passing the verification.

7. The digital currency terminal according to claim 4, further comprising a credit control bit verification module for sending the credit control bit indicated in the digital currency to a digital currency verification server and accepting a verification result of the credit control bit by the digital currency verification server.

8. The digital currency terminal according to claim 4, wherein said verifying the digital currency received from the digital currency delivery system using the second public key of the digital currency delivery system comprises:

calculating the limit control position and the identification information of the digital currency owner by using an SM3 algorithm to obtain a second abstract;

decrypting the signature information of the digital currency putting system by using a second public key of the digital currency putting system by using an SM2 algorithm to obtain a second digest plaintext;

and judging whether the second abstract and the second abstract plaintext are consistent, and if so, passing the verification.

9. A verification method of digital currency is characterized in that the verification method is applied to a digital currency terminal and comprises the following steps:

receiving digital currency from a digital currency delivery system;

verifying digital currency received from the digital currency delivery system by using a second public key of the digital currency delivery system, wherein the digital currency is generated according to a credit control bit, identification information of a digital currency owner and signature information of the digital currency delivery system; the credit control position consists of identification information of the digital currency putting system, transaction identification corresponding to the digital currency, currency generation amount and signature information of the credit control system.

10. The method of claim 9, wherein the credit control bits indicated in the digital currency are verified using a first public key of the credit control system.

11. The method of authenticating digital currency according to claim 10,

the verifying the credit control bit indicated in the digital currency by using the first public key of the credit control system comprises:

calculating the currency generation amount, the identification information of the digital currency putting system and the transaction identification corresponding to the digital currency by using an SM3 algorithm to generate a first abstract;

decrypting the signature information of the credit control system by using a first public key of the credit control system by using an SM2 algorithm to obtain a first abstract plaintext;

and judging whether the plaintext of the first abstract is consistent with that of the first abstract, and if so, passing the verification.

12. The method of claim 9, wherein the credit control bit indicated in the digital currency is sent to a digital currency validation service, and the result of the validation of the credit control bit by the digital currency validation service is accepted.

13. The method of authenticating digital currency according to claim 9,

the verifying digital currency received from a digital currency delivery system using a second public key of the digital currency delivery system comprises:

calculating the limit control position and the identification information of the digital currency owner by using an SM3 algorithm to obtain a second abstract;

decrypting the signature information of the digital currency putting system by using a second public key of the digital currency putting system by using an SM2 algorithm to obtain a second digest plaintext;

and judging whether the second abstract and the second abstract plaintext are consistent, and if so, passing the verification.

14. A digital currency generating system, comprising: the digital money delivery system according to any one of claims 1 to 3 and the digital money terminal according to any one of claims 4 to 8.

15. The digital money generating system according to claim 14, further comprising a central management system including a digital money transaction recording module for recording the digital money generated by the digital money deposit system and a transaction process of the digital money.

16. A server, comprising:

one or more processors;

a storage device for storing one or more programs,

when executed by the one or more processors, cause the one or more processors to implement the method of any one of claims 9-13.

17. A computer-readable medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 9-13.

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