CN111369307A - Electronic invoice management method and device - Google Patents
Electronic invoice management method and device Download PDFInfo
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- CN111369307A CN111369307A CN202010128293.7A CN202010128293A CN111369307A CN 111369307 A CN111369307 A CN 111369307A CN 202010128293 A CN202010128293 A CN 202010128293A CN 111369307 A CN111369307 A CN 111369307A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q30/00—Commerce
- G06Q30/04—Billing or invoicing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0442—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption
Abstract
The embodiment of the application discloses an electronic invoice management method and device, and the method comprises the following steps: the method comprises the steps that a node receives an electronic invoice from a billing terminal, wherein the electronic invoice is generated by the billing terminal according to a billing request sent by a billing terminal, the billing request comprises identification information of a Trusted Execution Environment (TEE) of the billing terminal, the electronic invoice comprises the identification information of the TEE, and the node is any one of a plurality of nodes; the node encrypts and processes the electronic invoice according to the identification information of the TEE to generate an encrypted electronic invoice; and the node sends the encrypted electronic invoice to the ticket collecting terminal, so that the ticket collecting terminal acquires the electronic invoice by using the TEE. By adopting the method and the device, the TEE can be utilized to encrypt the bill, so that the information security of the electronic invoice is ensured.
Description
Technical Field
The application relates to the technical field of computers, in particular to an electronic invoice management method and device.
Background
With the development of information technology, new technical methods are replacing traditional working methods, such as invoices. The past invoices need to go to special management departments, such as a tax bureau or enterprise legal personnel, and a third-party receiving and entrusting institution to issue paper invoices. The process is quite complicated, and a great amount of manpower and material resources are consumed for keeping the paper invoices. Electronic invoices have been produced at the right moment and are increasingly replacing traditional paper invoices. Only when a specific use, such as reimbursement, is required, the electronic invoice needs to be printed into a paper invoice. However, as the electronic invoices are increasingly widely used, some problems which need to be solved urgently, such as the security problem of the electronic invoices, are generated. The information contained in the invoice is usually easy to obtain by the electronic invoice issued at present, but the information security problem is involved in the risk of personal privacy disclosure.
Disclosure of Invention
The embodiment of the application provides an electronic invoice management method and device, which can encrypt a bill by using TEE (electronic equipment) so as to ensure the information security of the electronic invoice.
In a first aspect, an electronic invoice management method is applied to a blockchain network, where the blockchain network includes a plurality of nodes, and the method includes:
the method comprises the steps that a node receives an electronic invoice from a billing terminal, wherein the electronic invoice is generated by the billing terminal according to a billing request sent by a billing terminal, the billing request comprises identification information of a Trusted Execution Environment (TEE) of the billing terminal, the electronic invoice comprises the identification information of the TEE, and the node is any one of a plurality of nodes;
the node encrypts and processes the electronic invoice according to the identification information (a public key or a TEE identification) of the TEE to generate an encrypted electronic invoice;
and the node sends the encrypted electronic invoice to the ticket collecting terminal, so that the ticket collecting terminal acquires the electronic invoice by using the TEE.
In a second aspect, an electronic invoice management method is applied to an invoice collecting terminal, and the method includes:
the method comprises the steps that a receipt terminal sends a billing request to a billing terminal, wherein the billing request is used for indicating the billing terminal to generate an electronic invoice according to the billing request and sending the electronic invoice to a node, and the electronic invoice comprises identification information of a Trusted Execution Environment (TEE) of the receipt terminal;
the ticket collecting terminal receives an encrypted electronic invoice from the node, wherein the encrypted electronic invoice is generated after the node encrypts the electronic invoice according to the identification information of the TEE;
and the ticket collecting terminal decrypts the encrypted electronic invoice by using the TEE to obtain the electronic invoice.
In a third aspect, an electronic invoice management apparatus is applied to a blockchain network, where the blockchain network includes a plurality of nodes, and the electronic invoice management apparatus includes:
the electronic invoice management system comprises a communication unit, a receiving unit and a processing unit, wherein the communication unit is used for receiving an electronic invoice from a billing terminal, the electronic invoice is generated by the billing terminal according to a billing request sent by a billing terminal, the billing request comprises identification information of a Trusted Execution Environment (TEE) of the billing terminal, the electronic invoice comprises the identification information of the TEE, and the node is any one of a plurality of nodes;
the processing unit is used for encrypting and processing the electronic invoice according to the identification information of the TEE and generating an encrypted electronic invoice;
the communication unit is further configured to send the encrypted electronic invoice to the ticket collecting terminal, so that the ticket collecting terminal obtains the electronic invoice by using the TEE.
In a fourth aspect, an electronic invoice management apparatus is applied to a ticket collecting terminal, and the electronic invoice management apparatus includes:
the communication unit is used for sending a billing request to a billing terminal, wherein the billing request is used for indicating the billing terminal to generate an electronic invoice according to the billing request and sending the electronic invoice to a node, and the electronic invoice comprises identification information of a Trusted Execution Environment (TEE) of the billing terminal;
the communication unit is further configured to receive an encrypted electronic invoice from the node, where the encrypted electronic invoice is generated by the node after the electronic invoice is encrypted according to the identification information of the TEE;
and the obtaining unit is used for decrypting and processing the encrypted electronic invoice by the ticket collecting terminal through the TEE to obtain the electronic invoice.
In a fifth aspect, an embodiment of the present invention provides a node device, which is applied to a blockchain network, where the blockchain network includes a plurality of nodes, and the node device includes a processor, a network interface, and a storage device, where the processor, the network interface, and the storage device are connected to each other, where the network interface is controlled by the processor to send and receive data, and the storage device is used to store a computer program, where the computer program includes program instructions, and the processor is configured to call the program instructions to execute the method for electronic invoice management based on a blockchain network according to the first aspect.
In a sixth aspect, an embodiment of the present invention provides a ticket collecting terminal, where the ticket collecting terminal includes a processor, a network interface, and a storage device, where the processor, the network interface, and the storage device are connected to each other, where the network interface is controlled by the processor to transmit and receive data, and the storage device is used to store a computer program, where the computer program includes program instructions, and the processor is configured to call the program instructions to execute the method for managing electronic invoices based on a blockchain network according to the second aspect.
In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program enables a computer to perform some or all of the steps described in the first and second aspects of the embodiment of the present application.
In an eighth aspect, embodiments of the present application provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, where the computer program is operable to cause a computer to perform some or all of the steps as described in the first and second aspects of the embodiments of the present application.
In the embodiment of the application, the electronic invoice received by the node is the electronic invoice of the TEE identification information of the ticket collecting terminal, and the node encrypts the electronic invoice by using the TEE identification information of the ticket collecting terminal. And then the encrypted electronic invoice is sent to an invoice receiving terminal. The safety and the reliability of the ticket collecting link are improved. And because the electronic invoice is encrypted by using the identification information of the TEE of the receipt terminal, even if the electronic invoice is forwarded or transmitted by other equipment, the information of a receiver contained in the electronic invoice cannot be stolen, the privacy of the receiver is leaked, and the receiver can safely receive the electronic invoice.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1A is a schematic block diagram of an electronic invoice management system according to an embodiment of the present application;
fig. 1B is a schematic structural diagram of a block chain according to an embodiment of the present invention;
FIG. 1C is a diagram illustrating a process of generating a new block according to an embodiment of the present invention;
FIG. 1D is a schematic diagram of a basic business process of electronic invoice management provided by an embodiment of the invention;
FIG. 2 is a schematic flow chart diagram illustrating an electronic invoice management method according to an embodiment of the present application;
FIG. 3 is a schematic flow chart diagram illustrating another electronic invoice management method provided by an embodiment of the present application;
FIG. 4 is a schematic flow chart diagram illustrating another electronic invoice management method provided by an embodiment of the present application;
FIG. 5 is a functional unit diagram of an electronic invoice management apparatus according to an embodiment of the present application;
FIG. 6 is a functional unit schematic diagram of another electronic invoice management apparatus provided by an embodiment of the present application;
fig. 7 is a schematic structural diagram of a node device provided in an embodiment of the present application;
fig. 8 is a schematic structural diagram of a ticket collecting terminal according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
At present, after the electronic invoice is issued by a merchant or an intermediary, the electronic invoice can be transmitted or forwarded through other equipment in the intermediary, and the personal information of a ticket receiver contained in the electronic invoice is richer. Therefore, due to the lack of safety protection measures for electronic invoices, personal information of a ticket collector is easy to be stolen, and a great information safety problem exists.
In view of the foregoing problems, an embodiment of the present application provides an electronic invoice management method applied to a blockchain network, where the blockchain network includes a plurality of nodes. The following detailed description is made with reference to the accompanying drawings.
Referring to fig. 1A, an architecture diagram of an electronic invoice management system is shown, the resource management system includes a block chain network 10, an invoicing terminal 102 and a collecting terminal 103, wherein:
the blockchain network 10 refers to a network for performing data sharing between nodes, and a plurality of nodes 101 may be included in the blockchain network. Each node 101 may receive input information and maintain shared data (i.e., blockchains) within the blockchain network based on the received input information while operating normally. In order To ensure information intercommunication in the blockchain network, each node may have information connection, and any two nodes may implement Peer-To-Peer (P2P) communication, and specifically may perform P2P communication through a wired communication link or a wireless communication link. For example, when any node in the blockchain network receives input information, other nodes acquire the input information according to a consensus algorithm, and store the input information as data in shared data, so that the data stored on all nodes in the blockchain network are consistent.
The billing terminal 102 and the billing terminal 103 may access the blockchain network and may communicate with nodes in the blockchain network, for example, initiate service requests to the nodes, obtain data from the nodes, and so on. The billing terminal 102 and the billing terminal 103 may be a smart phone, a smart band, a tablet computer, a notebook computer, a desktop computer, a vehicle-mounted smart terminal, and the like.
It should be noted that the number of nodes shown in fig. 1A is only schematic, and any number of nodes may be deployed according to actual needs, and the billing terminal 102 and the ticket collecting terminal 103 may communicate with the same node in the blockchain network or communicate with different nodes in the blockchain network respectively.
Each node in the blockchain network has a corresponding node identifier, and each node in the blockchain network can store node identifiers of other nodes in the blockchain network, so that the generated block can be broadcast to other nodes in the blockchain network according to the node identifiers of other nodes. Each node may maintain a node identifier list as shown in the following table, and store the node name and the node identifier in the node identifier list correspondingly. The node identifier may be an Internet Protocol (IP) address or any other information that can be used to identify the node, and the table is described by taking the IP address as an example.
Each node in the blockchain network stores one identical blockchain. The block chain is composed of a plurality of blocks, referring to fig. 1B, the block chain is composed of a plurality of blocks, the starting block includes a block header and a block main body, the block header stores an input information characteristic value, a version number, a timestamp and a difficulty value, and the block main body stores input information; the next block of the starting block takes the starting block as a parent block, the next block also comprises a block head and a block main body, the block head stores the input information characteristic value of the current block, the block head characteristic value of the parent block, the version number, the timestamp and the difficulty value, and the like, so that the block data stored in each block in the block chain is associated with the block data stored in the parent block, and the safety of the input information in the block is ensured.
When each block in the block chain is generated, referring to fig. 1C, when the node where the block chain is located receives input information, the input information is verified, after the verification is completed, the input information is stored in the memory pool, and the hash tree for recording the input information is updated; and then, updating the updating time stamp to the time when the input information is received, trying different random numbers, and calculating the characteristic value for multiple times, so that the calculated characteristic value can meet the following formula:
SHA256(SHA256(version+prev_hash+merkle_root+ntime+nbits+x))<TARGET
wherein, SHA256 is a characteristic value algorithm used for calculating a characteristic value; version is version information of the relevant block protocol in the block chain; prev _ hash is a block head characteristic value of a parent block of the current block; merkle _ root is a characteristic value of the input information; ntime is the update time of the update timestamp; nbits is the current difficulty, is a fixed value within a period of time, and is determined again after exceeding a fixed time period; x is a random number; TARGET is a feature threshold, which can be determined from nbits.
Therefore, when the random number meeting the formula is obtained through calculation, the information can be correspondingly stored, and the block head and the block main body are generated to obtain the current block. And then, the node where the block chain is located respectively sends the newly generated blocks to other nodes in the block chain network where the newly generated blocks are located according to the node identifications of the other nodes in the block chain network, the newly generated blocks are verified by the other nodes, and the newly generated blocks are added to the block chain stored in the newly generated blocks after the verification is completed.
The intelligent contract can be operated on the nodes of the block chain network, the intelligent contract is realized by codes executed when a certain condition is met, developers can define contract logic through a programming language, issue the contract logic to the block chain (intelligent contract registration), and call keys or other events to trigger execution according to the logic of contract terms to complete the contract logic and simultaneously provide the functions of upgrading and cancelling the intelligent contract.
In some possible embodiments, a certain node 101 of the block chain network may receive an electronic invoice from the invoicing terminal 102, where the electronic invoice is generated by the invoicing terminal 102 according to an invoicing request sent by the invoicing terminal 103, and the invoicing request includes identification information of the trusted execution environment TEE of the invoicing terminal 103, and it is understood that the identification information of the TEE of the invoicing terminal may also be a unique identification of the invoicing terminal 103, so that the security is high. The electronic invoice comprises identification information of the TEE, and the node is any one of the plurality of nodes; the node 101 encrypts and processes the electronic invoice according to the identification information of the TEE to generate an encrypted electronic invoice, so that the safety factor of the electronic invoice is improved in an encrypted mode; and the node 101 sends the encrypted electronic invoice ticket to the ticket collecting terminal 103, so that the ticket collecting terminal acquires the electronic invoice by using the TEE. Even if the electronic invoice is forwarded or transmitted by other equipment, the information of a ticket receiver contained in the electronic invoice cannot be stolen, the privacy of the ticket receiver is leaked, and the ticket receiver can safely receive the electronic invoice.
In some possible implementations, referring to fig. 1D, a basic business process of electronic invoice management provided by an embodiment of the present invention specifically includes: the method comprises the steps that an invoicing terminal receives an invoicing request sent by a invoicing terminal, wherein the invoicing request comprises identification information of a Trusted Execution Environment (TEE) of the invoicing terminal; the electronic invoice generated by the invoicing terminal according to the invoicing request comprises the identification information of the TEE; the node receives an electronic invoice from a billing terminal, the node is any one of a plurality of nodes included in a blockchain network, and the node encrypts and processes the electronic invoice according to the identification information of the TEE to generate an encrypted electronic invoice; and the node sends the encrypted electronic invoice to a ticket collecting terminal so that the ticket collecting terminal acquires the electronic invoice by using the TEE. And the node writes the encrypted electronic invoice into a block in the block chain.
The technical solution of the embodiment of the present application may be implemented based on the electronic invoice management system or its variant architecture, which is exemplarily shown in fig. 1A.
Next, referring to fig. 2, fig. 2 is a schematic flowchart of a node management method according to an embodiment of the present application, where the method includes, but is not limited to, the following steps:
201. the method comprises the steps that a node receives an electronic invoice from a billing terminal, wherein the electronic invoice is generated by the billing terminal according to a billing request sent by a billing terminal, the billing request comprises identification information of a Trusted Execution Environment (TEE) of the billing terminal, the electronic invoice comprises the identification information of the TEE, and the node is any one of a plurality of nodes;
specifically, the electronic invoice received by the node is an electronic invoice which can be issued by the invoicing terminal based on an invoicing request sent by the invoicing terminal. That is, when the receipt terminal wants to issue an electronic invoice, the receipt terminal sends an invoice issuing request to the invoice issuing terminal, so that the invoice issuing terminal can issue the electronic invoice based on the invoice issuing request. And the invoicing request contains identification information of a Trusted Execution Environment (TEE) of the invoicing terminal, so that the electronic invoice issued by the invoicing terminal also contains the identification information of the TEE.
202. The node encrypts and processes the electronic invoice according to the identification information of the TEE to generate an encrypted electronic invoice;
specifically, it can be understood that, since the ticket collecting terminal has unique TEE identification information, the node may encrypt the electronic invoice based on the TEE identification information, so as to generate an encrypted electronic invoice. The encrypted electronic invoice needs to be decrypted to obtain the detailed information contained in the encrypted electronic invoice. In addition, the identification information of the TEE may be a TEE public key, or a TEE credential and a certificate, that is, a unique identification carried when the TEE credential and the certificate are signed and then deployed on a ticket collecting terminal by a corresponding authority.
203. And the node sends the encrypted electronic invoice to the ticket collecting terminal, so that the ticket collecting terminal acquires the electronic invoice by using the TEE.
Specifically, after the node generates the encrypted electronic invoice, the encrypted electronic invoice is sent to the invoice receiving terminal. And the ticket collecting terminal can obtain the electronic invoice by using the TEE after receiving the encrypted electronic invoice. For example, the ticket collecting terminal decrypts the encrypted electronic invoice, so that the electronic invoice can be safely obtained.
Therefore, in the embodiment of the application, the electronic invoice received by the node is the electronic invoice of the identification information of the TEE of the ticket collecting terminal, and the node encrypts the electronic invoice by using the identification information of the TEE of the ticket collecting terminal. And then the encrypted electronic invoice is sent to an invoice receiving terminal. The safety and the reliability of the ticket collecting link are improved. And because the electronic invoice is encrypted by using the identification information of the TEE of the receipt terminal, even if the electronic invoice is forwarded or transmitted by other equipment, the information of a receiver contained in the electronic invoice cannot be stolen, the privacy of the receiver is leaked, and the receiver can safely receive the electronic invoice.
In one possible example, the node encrypts and processes the electronic invoice according to the identification information of the TEE, and generates an encrypted electronic invoice, including: the node acquires a TEE public key of the ticket collecting terminal according to the identification information of the TEE; and the node encrypts the electronic invoice by using the TEE public key to obtain the encrypted electronic invoice.
Specifically, it can be understood that the TEE public key is possessed by the TEE of the ticket collecting terminal and uniquely matches with the TEE private key of the ticket collecting terminal. The public key is accessible by other devices, while the private key is accessible only by the ticketing terminal. Namely, the node firstly utilizes the identification information of the TEE to obtain the TEE public key, then utilizes the TEE public key to encrypt the electronic invoice to obtain the encrypted electronic invoice, and only the TEE private key of the ticket receiving terminal can decrypt the encrypted electronic invoice. The mode of obtaining the TEE public key may be that the node obtains the TEE public key corresponding to the identification information of the TEE from the block chain corresponding to the block chain network according to the identification information of the TEE; or, if the identification information of the TEE includes a TEE public key, the node may acquire the TEE public key from the identification information of the TEE.
In addition, when the node performs encryption processing on the electronic invoice, the node can also perform digital signature by using a private key of the node, so that when the node writes the encrypted electronic invoice into a block in a block chain, other nodes in the block chain can verify that the node performing the encryption processing of the electronic invoice is the digital signature of the node by obtaining the private key of the node, and obtain a subject performing the encryption operation as the node.
And obviously, after the node acquires the identification information of the TEE, the electronic invoice is encrypted by using the TEE public key based on the unique matching property of the TEE public key and the TEE private key and the characteristic that the TEE public key is convenient to acquire, so that the encrypted electronic invoice is obtained. So that the encrypted electronic invoice has a higher security level. When the operation is convenient, the safety of the electronic invoice is greatly enhanced.
In one possible example, the acquiring, by the node, the TEE public key of the ticket collecting terminal according to the identification information of the TEE includes: and the node acquires a TEE public key corresponding to the identification information of the TEE from a block chain corresponding to the block chain network according to the identification information of the TEE.
Specifically, it can be understood that the ticket collecting terminal stores its TEE public key into the blockchain through a node in the blockchain network in advance. And TEE identification information is stored together with the TEE public key, so that the node can inquire the TEE public key corresponding to the TEE identification information from the block chain according to the TEE identification information.
Therefore, the TEE public key is obtained from the block chain through the identification information of the TEE, the method is convenient and fast, and the public key in the block chain is stored and has high credibility.
In one possible example, the identification information of the TEE includes a TEE public key, and the node acquires the TEE public key of the ticket collecting terminal according to the identification information of the TEE, including: and the node acquires the TEE public key from the identification information of the TEE.
Specifically, it can be understood that if the identification information of the TEE includes the TEE public key, the node can easily extract or find the TEE public key from the identification information of the TEE after acquiring the identification information of the TEE.
Therefore, the TEE public key is contained in the identification information of the TEE, so that the node can conveniently acquire the TEE public key when acquiring the identification information of the TEE, the operation flow is simplified, and the acquisition timeliness is improved. And the TEE public key is contained in the identification information of the TEE, so that the authenticity and accuracy of the TEE public key are ensured.
In one possible example, after the node encrypts and processes the electronic invoice according to the identification information of the TEE and generates an encrypted electronic invoice, the method further includes: the node broadcasts the encrypted electronic invoice to other nodes except the node in the plurality of nodes; and after the encrypted electronic invoice is identified by other nodes, the nodes write the encrypted electronic invoice into a block.
Specifically, after the node encrypts and processes the electronic invoice according to the identification information of the TEE and generates an encrypted electronic invoice, the node further broadcasts the encrypted electronic invoice to other nodes in the blockchain, so that the other nodes perform consensus verification on the encrypted electronic invoice, obtain a TEE public key stored in the blockchain or match the identification information of the TEE with a TEE public key included in the encrypted electronic invoice, and the results obtained by most or all nodes are matched with each other so that the consensus passes. The node writes the encrypted electronic invoice into a block.
It can be seen that after the encrypted electronic invoice is generated, the other nodes perform consensus verification, and after the consensus verification passes, the nodes write the encrypted electronic invoice into the block. The later inquiry operation record and the inquiry of the encrypted electronic invoice are facilitated.
Referring to fig. 3, fig. 3 is a schematic flowchart of another electronic invoice management method provided in the embodiment of the present application, and the method is applied to a node in a block chain network; the method comprises the following steps:
301. the method comprises the steps that a node receives an electronic invoice from a billing terminal, wherein the electronic invoice is generated by the billing terminal according to a billing request sent by a billing terminal, the billing request comprises identification information of a Trusted Execution Environment (TEE) of the billing terminal, the electronic invoice comprises the identification information of the TEE, and the node is any one of a plurality of nodes;
302. the node encrypts and processes the electronic invoice according to the identification information of the TEE to generate an encrypted electronic invoice;
303. and the node sends the encrypted electronic invoice to the ticket collecting terminal, so that the ticket collecting terminal acquires the electronic invoice by using the TEE.
The steps 301 and 303 refer to the steps 201 and 203, which are not described herein again.
304. The node broadcasts the encrypted electronic invoice to other nodes except the node in the plurality of nodes;
after the node encrypts and processes the electronic invoice according to the identification information of the TEE and generates an encrypted electronic invoice, the node broadcasts the encrypted electronic invoice to other nodes in the block chain, so that the other nodes can conveniently acquire the encrypted electronic invoice to perform consensus verification.
305. And after the encrypted electronic invoice is identified by other nodes, the nodes write the encrypted electronic invoice into a block.
Specifically, after the other nodes receive the encrypted electronic invoice broadcast by the node, the encrypted electronic invoice is subjected to consensus verification. The consensus verification may include: and the other nodes acquire the TEE public key stored in the block chain or the identification information of the TEE and match the TEE public key contained in the encrypted electronic invoice, and the results obtained by most or all nodes are matched with each other and then are commonly identified. The node writes the encrypted electronic invoice into a block.
Therefore, in the embodiment of the application, the electronic invoice received by the node is the electronic invoice of the identification information of the TEE of the ticket collecting terminal, and the node encrypts the electronic invoice by using the identification information of the TEE of the ticket collecting terminal. And then the encrypted electronic invoice is sent to an invoice receiving terminal. The safety and the reliability of the ticket collecting link are improved. And because the electronic invoice is encrypted by using the identification information of the TEE of the receipt terminal, even if the electronic invoice is forwarded or transmitted by other equipment, the information of a receiver contained in the electronic invoice cannot be stolen, the privacy of the receiver is leaked, and the receiver can safely receive the electronic invoice. Furthermore, after the encrypted electronic invoice is generated, other nodes perform consensus verification, and after the consensus verification is passed, the nodes write the encrypted electronic invoice into the block. The later inquiry operation record and the inquiry of the encrypted electronic invoice are facilitated.
Referring to fig. 4, in accordance with the embodiment shown in fig. 2 and fig. 3, fig. 4 is a schematic flowchart of another electronic invoice management method provided in the embodiment of the present application, and is applied to a ticket collecting terminal; the method comprises the following steps:
401. the method comprises the steps that a receipt terminal sends a billing request to a billing terminal, wherein the billing request is used for indicating the billing terminal to generate an electronic invoice according to the billing request and sending the electronic invoice to a node, and the electronic invoice comprises identification information of a Trusted Execution Environment (TEE) of the receipt terminal;
402. the ticket collecting terminal receives an encrypted electronic invoice from the node, wherein the encrypted electronic invoice is generated after the node encrypts the electronic invoice according to the identification information of the TEE;
the steps 401 and 402 refer to the aforementioned steps, and are not described herein again.
403. And the ticket collecting terminal decrypts the encrypted electronic invoice by using the TEE to obtain the electronic invoice.
Specifically, after the receipt terminal acquires the encrypted electronic invoice, it may be understood that the encrypted electronic invoice is decrypted, or the decryption operation may be performed when the electronic invoice is further used. Because the electronic invoice is encrypted by using the TEE public key, the encrypted electronic invoice needs to be decrypted by using the TEE, and after decryption, the electronic invoice is acquired by the ticket collecting terminal, namely the detailed information contained in the electronic invoice can be acquired by the ticket collecting terminal.
Therefore, the electronic invoice encrypted by the node is acquired by the ticket collecting terminal and can be decrypted only by utilizing the TEE of the ticket collecting terminal, so that the safety of the electronic invoice information is guaranteed, and the risk of information leakage is effectively reduced.
In one possible example, after the ticket collecting terminal receives the encrypted electronic invoice from the node, the method further includes: the ticket collecting terminal stores the encrypted electronic invoice; and if the ticket collecting terminal detects an instruction for decrypting the encrypted electronic invoice, the encrypted electronic invoice is transmitted to the TEE, so that the TEE can decrypt the encrypted electronic invoice by using a private key of the TEE to obtain the electronic invoice.
Specifically, after the receipt terminal receives the encrypted electronic invoice from the node, if the encrypted electronic invoice is not required to be used immediately, the encrypted electronic invoice can be stored first, for example, in a wechat card package or a mobile phone application such as an album. When an instruction for decrypting the encrypted electronic invoice is detected, that is, it is detected that detailed information is required to be acquired for the encrypted electronic invoice, or when the electronic invoice is further used, such as financial statement, authenticity query and the like, a receipt receiving terminal automatically transmits the encrypted electronic invoice to the TEE, so that the TEE decrypts the encrypted electronic invoice by using a private key of the TEE, and obtains the electronic invoice before encryption. Of course, the encrypted electronic invoice may be stored in the TEE of the ticket collecting terminal when the ticket collecting terminal receives the encrypted electronic invoice.
Therefore, the receipt terminal stores the encrypted electronic invoice after receiving the encrypted electronic invoice, and performs decryption processing when decryption is needed, so that the time of information security of the electronic invoice can be prolonged.
Embodiments of the present invention further provide a computer storage medium, in which program instructions are stored, and when the program instructions are executed, the computer storage medium is configured to implement the corresponding method described in the above embodiments.
Referring to fig. 5 again, it is a schematic diagram of functional units of an electronic invoice management apparatus 500 according to an embodiment of the present invention, where the electronic invoice management apparatus according to an embodiment of the present invention may be disposed in a node of a block chain network.
In one implementation of the apparatus of the embodiment of the present invention, the apparatus 500 includes the following structure.
A communication unit 501, configured to receive an electronic invoice from a billing terminal, where the electronic invoice is generated by the billing terminal according to a billing request sent by a billing terminal, the billing request includes identification information of a trusted execution environment TEE of the billing terminal, the electronic invoice includes the identification information of the TEE, and the node is any one of the nodes;
the processing unit 502 is configured to encrypt the electronic invoice according to the identification information of the TEE, and generate an encrypted electronic invoice;
the communication unit 501 is further configured to send the encrypted electronic invoice to the ticket collecting terminal, so that the ticket collecting terminal obtains the electronic invoice by using the TEE.
In a possible example, in the aspect that the node encrypts and processes the electronic invoice according to the identification information of the TEE to generate an encrypted electronic invoice, the processing unit 502 is specifically configured to obtain, by the node, a TEE public key of the ticket receiving terminal according to the identification information of the TEE; and the node encrypts the electronic invoice by using the TEE public key to obtain the encrypted electronic invoice.
In a possible example, in the aspect that the node acquires the TEE public key of the ticket collecting terminal according to the identification information of the TEE, the processing unit 502 is specifically configured to acquire the TEE public key corresponding to the identification information of the TEE from the block chain corresponding to the block chain network according to the identification information of the TEE.
In a possible example, the identification information of the TEE includes a TEE public key, and in the aspect that the node acquires the TEE public key of the ticket collecting terminal according to the identification information of the TEE, the processing unit 502 is specifically configured to acquire the TEE public key from the identification information of the TEE.
In a possible example, after the processing unit 502 is configured to encrypt and process the electronic invoice according to the identification information of the TEE and generate an encrypted electronic invoice, the communication unit 501 is configured to broadcast the encrypted electronic invoice to other nodes in the plurality of nodes except the node; the processing unit 502 is further configured to, after the encrypted electronic invoice is identified by the other node, write the encrypted electronic invoice into a block by the node.
Referring to fig. 6 again, the functional units of another electronic invoice management apparatus 600 according to an embodiment of the present invention are shown in schematic diagram, and the electronic invoice management apparatus according to an embodiment of the present invention is communicatively connected to nodes in the block chain network.
In one implementation manner of the apparatus of the embodiment of the present invention, the ticket collecting terminal 600 includes the following structure.
A communication unit 601, configured to send a billing request to a billing terminal, where the billing request is used to instruct the billing terminal to generate an electronic invoice according to the billing request, and send the electronic invoice to a node, where the electronic invoice includes identification information of a trusted execution environment TEE of the terminal receiving the invoice;
the communication unit 601 is further configured to receive an encrypted electronic invoice from the node, where the encrypted electronic invoice is generated after the node encrypts the electronic invoice according to the identification information of the TEE;
the processing unit 602 is configured to decrypt the encrypted electronic invoice using the TEE to obtain the electronic invoice.
In a possible example, after the communication unit 601 is configured to receive an encrypted electronic invoice from a node, the processing unit 602 is configured to store the encrypted electronic invoice; the electronic invoice decryption processing method is further configured to transmit the encrypted electronic invoice to the TEE if the processing unit 602 detects an instruction for decrypting the encrypted electronic invoice, so that the TEE decrypts the encrypted electronic invoice by using a private key of the TEE, and obtains the electronic invoice.
Referring to fig. 7 again, it is a schematic structural diagram of a node device according to an embodiment of the present invention, where the node device includes structures such as a power supply module, and includes a processor 701, a storage device 702, and a communication interface 703. Data can be interacted among the processor 701, the storage device 702 and the communication interface 703, and the processor 701 realizes a corresponding bill processing function.
The storage 702 may include a volatile memory (volatile memory), such as a random-access memory (RAM); the storage device 702 may also include a non-volatile memory (non-volatile memory), such as a flash memory (flash memory), a solid-state drive (SSD), or the like; the storage means 702 may also comprise a combination of memories of the kind described above.
The processor 701 may be a Central Processing Unit (CPU) 701. In one embodiment, the processor 701 may also be a Graphics Processing Unit (GPU) 701. The processor 701 may also be a combination of a CPU and a GPU. In the electronic device, a plurality of CPUs and GPUs can be included as needed to perform corresponding ticket processing. In one embodiment, the storage 702 is used to store program instructions. The processor 701 may call the program instructions to perform the following operations:
receiving an electronic invoice from a billing terminal, wherein the electronic invoice is generated by the billing terminal according to a billing request sent by a billing terminal, the billing request comprises identification information of a Trusted Execution Environment (TEE) of the billing terminal, the electronic invoice comprises the identification information of the TEE, and the node is any one of the plurality of nodes;
encrypting the electronic invoice according to the identification information of the TEE to generate an encrypted electronic invoice;
and sending the encrypted electronic invoice to the ticket collecting terminal so that the ticket collecting terminal acquires the electronic invoice by using the TEE.
In one possible example, the processor 701 is further configured to:
calling a program instruction stored in the storage device 702, and receiving an electronic invoice from a billing terminal through a communication interface 703, where the electronic invoice is generated by the billing terminal according to a billing request sent by a billing terminal, the billing request includes identification information of a trusted execution environment TEE of the billing terminal, the electronic invoice includes the identification information of the TEE, and the node is any one of the nodes; the processor 701 is further configured to encrypt the electronic invoice according to the identification information of the TEE, and generate an encrypted electronic invoice; the processor 701 is further configured to call a program instruction stored in the storage device 702, and send the encrypted electronic invoice to the ticket collecting terminal through the node via the communication interface 703, so that the ticket collecting terminal obtains the electronic invoice by using the TEE.
In a possible example, in the aspect that the node encrypts and processes the electronic invoice according to the identification information of the TEE to generate an encrypted electronic invoice, the processor 701 is specifically configured to obtain, by the node, a TEE public key of the ticket receiving terminal according to the identification information of the TEE; and the node encrypts the electronic invoice by using the TEE public key to obtain the encrypted electronic invoice.
In a possible example, in the aspect that the node acquires the TEE public key of the ticket collecting terminal according to the identification information of the TEE, the processor 701 is specifically configured to acquire the TEE public key corresponding to the identification information of the TEE from the block chain corresponding to the block chain network according to the identification information of the TEE.
In a possible example, the identification information of the TEE includes a TEE public key, and in the aspect that the node acquires the TEE public key of the ticket collecting terminal according to the identification information of the TEE, the processor 701 is specifically configured to acquire the TEE public key from the identification information of the TEE.
In one possible example, after the processor 701 is configured to encrypt and process the electronic invoice according to the identification information of the TEE, and generate an encrypted electronic invoice, the processor 701 is further configured to call a program instruction stored in the storage 702, and is configured to broadcast the encrypted electronic invoice to other nodes in the plurality of nodes except the node through the communication interface 703; the processor 701 is further configured to, after the encrypted electronic invoice is identified by the other node, the node writes the encrypted electronic invoice into a block.
Please refer to fig. 8, which is a schematic structural diagram of a ticket collecting terminal according to an embodiment of the present invention, the ticket collecting terminal according to the embodiment of the present invention includes a power supply module, and the like, and includes a processor 801, a storage device 802, and a network interface 803. The processor 801, the storage 802, and the network interface 803 may interact with each other.
The storage device 802 may include a volatile memory (volatile memory), such as a random-access memory (RAM); the storage device 802 may also include a non-volatile memory (non-volatile memory), such as a flash memory (flash memory), a solid-state drive (SSD), or the like; the storage means 802 may also comprise a combination of memories of the kind described above.
The processor 801 may be a Central Processing Unit (CPU) 801. In one embodiment, the processor 801 may also be a Graphics Processing Unit (GPU) 801. The processor 801 may also be a combination of a CPU and a GPU. In one embodiment, the storage 802 is used to store program instructions. The processor 801 may invoke the program instructions to perform the following operations:
sending a billing request to a billing terminal, wherein the billing request is used for indicating the billing terminal to generate an electronic invoice according to the billing request and sending the electronic invoice to a node, and the electronic invoice comprises identification information of a Trusted Execution Environment (TEE) of a billing terminal;
receiving an encrypted electronic invoice from the node, wherein the encrypted electronic invoice is generated after the node encrypts and processes the electronic invoice according to the identification information of the TEE;
and decrypting the encrypted electronic invoice by using the TEE to obtain the electronic invoice.
Optionally, the processor 801 is configured to, after receiving the encrypted electronic invoice from the node, further store the encrypted electronic invoice; and if an instruction for decrypting the encrypted electronic invoice is detected, the encrypted electronic invoice is transmitted to the TEE, so that the TEE decrypts the encrypted electronic invoice by using a private key of the TEE to obtain the electronic invoice.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
While the invention has been described with reference to a number of embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An electronic invoice management method applied to a blockchain network, wherein the blockchain network comprises a plurality of nodes, the method comprising:
the method comprises the steps that a node receives an electronic invoice from a billing terminal, wherein the electronic invoice is generated by the billing terminal according to a billing request sent by a billing terminal, the billing request comprises identification information of a Trusted Execution Environment (TEE) of the billing terminal, the electronic invoice comprises the identification information of the TEE, and the node is any one of a plurality of nodes;
the node encrypts and processes the electronic invoice according to the identification information of the TEE to generate an encrypted electronic invoice;
and the node sends the encrypted electronic invoice to the ticket collecting terminal, so that the ticket collecting terminal acquires the electronic invoice by using the TEE.
2. The method according to claim 1, wherein the node encrypts and processes the electronic invoice according to the identification information of the TEE, and generates an encrypted electronic invoice, comprising:
the node acquires a TEE public key of the ticket collecting terminal according to the identification information of the TEE;
and the node encrypts the electronic invoice by using the TEE public key to obtain the encrypted electronic invoice.
3. The method of claim 2, wherein the node obtains the TEE public key of the ticket collecting terminal according to the identification information of the TEE, and the method comprises the following steps:
and the node acquires a TEE public key corresponding to the identification information of the TEE from a block chain corresponding to the block chain network according to the identification information of the TEE.
4. The method of claim 2, wherein the identification information of the TEE includes a TEE public key, and the node acquires the TEE public key of the ticket terminal according to the identification information of the TEE, including:
and the node acquires the TEE public key from the identification information of the TEE.
5. The method according to claim 1, wherein the node processes the electronic invoice according to the identification information of the TEE in an encryption manner, and after generating the encrypted electronic invoice, the method further comprises:
the node broadcasts the encrypted electronic invoice to other nodes except the node in the plurality of nodes;
and after the encrypted electronic invoice is identified by other nodes, the nodes write the encrypted electronic invoice into a block.
6. An electronic invoice management method is applied to an invoice receiving terminal, and comprises the following steps:
the method comprises the steps that a receipt terminal sends a billing request to a billing terminal, wherein the billing request is used for indicating the billing terminal to generate an electronic invoice according to the billing request and sending the electronic invoice to a node, and the electronic invoice comprises identification information of a Trusted Execution Environment (TEE) of the receipt terminal;
the ticket collecting terminal receives an encrypted electronic invoice from the node, wherein the encrypted electronic invoice is generated after the node encrypts the electronic invoice according to the identification information of the TEE;
and the ticket collecting terminal decrypts the encrypted electronic invoice by using the TEE to obtain the electronic invoice.
7. The method of claim 6, wherein after the ticketing terminal receives the encrypted electronic invoice from the node, the method further comprises:
the ticket collecting terminal stores the encrypted electronic invoice;
and if the ticket collecting terminal detects an instruction for decrypting the encrypted electronic invoice, the encrypted electronic invoice is transmitted to the TEE, so that the TEE can decrypt the encrypted electronic invoice by using a private key of the TEE to obtain the electronic invoice.
8. An electronic invoice management apparatus, characterised in that the apparatus comprises a processing unit, a communication unit, wherein:
the communication unit is used for receiving an electronic invoice from a billing terminal, the electronic invoice is generated by the billing terminal according to a billing request sent by a billing terminal, the billing request comprises identification information of a Trusted Execution Environment (TEE) of the billing terminal, the electronic invoice comprises the identification information of the TEE, and the node is any one of the plurality of nodes;
the processing unit is used for encrypting and processing the electronic invoice according to the identification information of the TEE and generating an encrypted electronic invoice;
the communication unit is further configured to send the encrypted electronic invoice to the ticket collecting terminal, so that the ticket collecting terminal obtains the electronic invoice by using the TEE.
9. An electronic invoice management apparatus, characterised in that the apparatus comprises a processing unit, a communication unit, wherein:
the communication unit is used for sending a billing request to a billing terminal, wherein the billing request is used for indicating the billing terminal to generate an electronic invoice according to the billing request and sending the electronic invoice to a node, and the electronic invoice comprises identification information of a Trusted Execution Environment (TEE) of the billing terminal;
the communication unit is further configured to receive an encrypted electronic invoice from the node, where the encrypted electronic invoice is generated by the node after the electronic invoice is encrypted according to the identification information of the TEE;
and the processing unit is used for decrypting and processing the encrypted electronic invoice by using the TEE to obtain the electronic invoice.
10. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to perform the method according to any one of claims 1-7.
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| CN202010128293.7A CN111369307A (en) | 2020-02-27 | 2020-02-27 | Electronic invoice management method and device |
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