WO2020259056A1 - Bill management method and system and computer readable storage medium - Google Patents

Abstract

A bill management method and system and a computer readable storage medium. The method relates to the technical field of service process optimization and comprises: a user terminal encrypts a receivable bill document so as to obtain an encrypted receivable bill document (S1); the user terminal stores the encrypted receivable bill document to a blockchain (S2); the user terminal encrypts an endorsement transferring service contact document so as to obtain an encrypted endorsement transferring service contact document (S3); the user terminal stores the encrypted endorsement transferring service contact document to the blockchain (S4); an auditing terminal acquires from the blockchain the encrypted receivable bill document and the encrypted endorsement transferring service contact document (S5); and the auditing terminal decrypts the encrypted receivable bill document and the encrypted endorsement transferring service contact document respectively, so as to obtain the receivable bill document and the endorsement transferring service contact document (S6). The method could increase the auditing efficiency for endorsement transferring.

Description

A bill management method, system and computer readable storage medium

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on June 24, 2019, the application number is 201910550177.1, and the invention title is "a method, system and computer-readable storage medium for bill management", all of which are approved The reference is incorporated in this application.

Technical field

This application relates to the field of Internet technology, and in particular to a method, system and computer-readable storage medium for ticket management.

Background technique

Endorsement transfer refers to the act of endorsement for the purpose of transferring the rights of a bill. If the holder of the bill transfers the right to the bill to another person, he shall endorse and deliver the bill.

The inventor realized that in the prior art, most endorsement transfers use paper-based notes receivable. The endorsement and assignment of notes receivable is not closely related to the business, and there are violations of endorsement and assignment without actual business. Only a photocopy of the endorsed and transferred bills can be kept, and the auditing agency also needs to spend a lot of time to review its authenticity, resulting in inefficiency in the review.

Summary of the invention

The embodiments of the present application provide a bill management method, system and storage medium, aiming to improve the efficiency of review of endorsement transfer.

In the first aspect, an embodiment of the present application provides a ticket management method, which includes:

The user terminal encrypts the receipt document to obtain the encrypted receipt document;

The user terminal stores the encrypted note receivable file in the blockchain;

The user terminal encrypts the endorsement transfer business contract document to obtain the encrypted endorsement transfer business contract document;

The user terminal stores the encrypted endorsement transfer business contract document in the blockchain;

The audit terminal obtains the encrypted notes receivable file and the encrypted endorsement transfer business contract file from the blockchain;

The audit terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file and the endorsement transfer business contract document, so that the auditor can verify the note receivable file And the endorsement transfer business contract documents are reviewed.

In the second aspect, the embodiments of the present application also provide a bill management system. The bill management system includes a user terminal and an audit terminal. The user terminal includes a first encryption unit, a first storage unit, a second encryption unit, and a second encryption unit. The second storage unit, the audit terminal includes an acquisition unit and a first decryption unit, wherein:

The first encryption unit is used to encrypt the receipt document to obtain an encrypted receipt document;

The first storage unit is used to store the encrypted note receivable file in the blockchain;

The second encryption unit is used to encrypt the endorsement transfer business contract document to obtain the encrypted endorsement transfer business contract document;

The second storage unit is used to store the encrypted endorsement transfer business contract document in the blockchain;

An obtaining unit, configured to obtain the encrypted notes receivable file and the encrypted endorsement transfer business contract file from the blockchain;

The first decryption unit is used to decrypt the encrypted note receivable file and the encrypted endorsement transfer business contract file to obtain the note receivable file and the endorsement transfer business contract document, so that the reviewer can Review the bills receivable documents and the endorsement transfer business contract documents.

In the third aspect, the embodiments of the present application also provide a computer device. The computer device includes a memory, a processor, and a computer program stored on the memory and running on the processor. When the processor executes the program, Realize a bill management method, including:

The user terminal encrypts the receipt document to obtain the encrypted receipt document;

The user terminal stores the encrypted note receivable file in the blockchain;

The user terminal encrypts the endorsement transfer business contract document to obtain the encrypted endorsement transfer business contract document;

The user terminal stores the encrypted endorsement transfer business contract document in the blockchain;

The audit terminal obtains the encrypted notes receivable file and the encrypted endorsement transfer business contract file from the blockchain;

The audit terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file and the endorsement transfer business contract document, so that the auditor can verify the note receivable file And the endorsement transfer business contract documents are reviewed.

In a fourth aspect, the embodiments of the present application also provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, a method for ticket management is implemented, including:

The user terminal encrypts the receipt document to obtain the encrypted receipt document;

The user terminal stores the encrypted note receivable file in the blockchain;

The user terminal encrypts the endorsement transfer business contract document to obtain the encrypted endorsement transfer business contract document;

The user terminal stores the encrypted endorsement transfer business contract document in the blockchain;

The audit terminal obtains the encrypted notes receivable file and the encrypted endorsement transfer business contract file from the blockchain;

The audit terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file and the endorsement transfer business contract document, so that the auditor can verify the note receivable file And the endorsement transfer business contract documents are reviewed.

The embodiments of the application provide a bill management method, system and storage medium. By applying the technical solution of the embodiment of this application, the user terminal encrypts the receipt document to obtain the encrypted receipt document; the user terminal stores the encrypted receipt document in the blockchain; the user terminal performs the endorsement transfer service contract document Encrypt to obtain the encrypted endorsement transfer business contract document; the user terminal stores the encrypted endorsement transfer business contract document in the blockchain; the audit terminal obtains the encrypted note receivable document and the encrypted endorsement transfer business contract document from the blockchain; The terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file and the endorsement transfer business contract document, so that the note receivable file and the endorsement transfer business contract document can be encrypted and stored on the blockchain On the one hand, it ensures the safety and reliability of the company's bills and avoids the possibility of bill loss. On the other hand, due to the high reliability of data on the blockchain and clear time nodes, it is convenient for auditors to review the process of enterprise endorsement transfer, which saves a lot of audit time and improves the efficiency of the audit.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. Ordinary technicians can obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of an application scenario of a ticket management method provided by an embodiment of the application;

FIG. 2 is a schematic flowchart of a ticket management method provided by an embodiment of the application;

FIG. 3 is a schematic diagram of a sub-flow of a ticket management method provided by an embodiment of the application;

4 is a schematic diagram of a sub-flow of a ticket management method provided by an embodiment of the application;

FIG. 5 is a schematic diagram of a sub-flow of a ticket management method provided by an embodiment of the application;

FIG. 6 is a schematic diagram of a sub-flow of a ticket management method provided by an embodiment of the application;

FIG. 7 is a schematic diagram of a sub-flow of a ticket management method provided by an embodiment of the application;

FIG. 8 is a schematic block diagram of a bill management system provided by an embodiment of the application;

9 is a schematic block diagram of a first encryption unit of a ticket management system provided by an embodiment of the application;

10 is a schematic block diagram of a first storage unit of a bill management system provided by an embodiment of the application;

FIG. 11 is a schematic block diagram of a fourth encryption unit of a ticket management system provided by an embodiment of this application;

FIG. 12 is a schematic block diagram of a second encryption unit of a ticket management system provided by an embodiment of this application;

FIG. 13 is a schematic block diagram of a second storage unit of a bill management system according to an embodiment of the application;

FIG. 14 is a schematic block diagram of a first decryption unit of a ticket management system provided by an embodiment of the application; and

FIG. 15 is a schematic block diagram of a computer device provided by an embodiment of this application.

Detailed ways

Please refer to FIG. 1 and FIG. 2. FIG. 1 is a schematic diagram of an application scenario of a ticket management method provided by an embodiment of this application. FIG. 2 is a schematic flowchart of a ticket management method provided by an embodiment of the application. The user terminal 1 encrypts the receipt file to obtain the encrypted receipt file; the user terminal 1 stores the encrypted receipt file in the blockchain 2; the user terminal 1 encrypts the endorsement transfer business contract document to obtain the encryption Endorsement transfer service contract document; user terminal 1 stores the encrypted endorsement transfer service contract document in the blockchain 2; audit terminal 3 obtains the encrypted note receivable document and the encrypted endorsement transfer service from the blockchain 2 Contract documents; the review terminal 3 respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file and the endorsement transfer business contract document, so that the reviewer can The bills receivable documents and the endorsement transfer business contract documents are reviewed.

Fig. 2 is a schematic flowchart of a ticket management method provided by an embodiment of the present application. As shown in the figure, the method includes the following steps S1-S6.

S1: The user terminal encrypts the receipt file to obtain an encrypted receipt file.

In specific implementation, in order to ensure the security of the note receivable file and avoid the disclosure of the content of the note receivable file, the user terminal encrypts the note receivable file to obtain the encrypted note file. The encrypted notes receivable file obtained after encryption is more secure and guarantees the information security of the enterprise.

In an embodiment, the above step S1 specifically includes the following step S11.

S11: The user terminal encrypts the receipt file with the preset symmetric key to obtain the encrypted receipt file.

In specific implementation, the user terminal encrypts the receipt file with the preset symmetric key to obtain the encrypted receipt file.

Symmetric key encryption is also called private key encryption, that is, both parties sending and receiving data must use the same key to encrypt and decrypt the plaintext. Symmetric key encryption algorithms mainly include: DES, 3DES, IDEA, FEAL, BLOWFISH, etc. The symmetric key encryption method is convenient for the related party (ie, the auditing party) to decrypt the encrypted note receivable file.

S2: The user terminal stores the encrypted note receivable file in the blockchain.

In a specific implementation, the user terminal stores the encrypted note receivable file in the blockchain. Since the file stored in the blockchain cannot be tampered with, the security and reliability of the encrypted note receivable file can be effectively ensured.

In an embodiment, referring to FIG. 3, the above step S2 specifically includes the following steps S21-S23.

S21: Perform encryption processing on the encrypted note receivable file to obtain a digital signature.

In specific implementation, the encryption processing refers to the encryption processing performed on the encrypted note receivable file through a cryptographic algorithm to ensure that the encrypted note receivable file cannot be tampered with. A digital signature is a string of anti-counterfeit strings used to verify the integrity and origin of the encrypted note receivable file. The digital signature is obtained by encrypting the encrypted note receivable file, and the digital signature and the encrypted note receivable file are sent to the verification node, and the verification node verifies the integrity and source of the encrypted note receivable file.

In an embodiment, referring to FIG. 4, the above step S21 specifically includes the following steps S211-S212.

S211: Encrypt the encrypted note receivable file according to a hash algorithm to obtain a digital digest.

In specific implementation, the hash algorithm refers to an algorithm that can map messages of any length into fixed-length messages. The hash algorithm in this implementation uses any one of MD4, MD5, or SHA256. Among them, the encrypted note file is the unencrypted plaintext, the plaintext is the characters that people can intuitively understand its meaning, and the plaintext of any length is mapped into a string of fixed-length ciphertexts through the hash algorithm. People cannot intuitively understand the meaning of the encrypted string. This string of ciphertext is the digital digest.

S212: Encrypt the digital digest according to the pre-configured private key to obtain a digital signature.

In the specific implementation, the private key refers to the key distributed through the asymmetric encryption algorithm. The asymmetric encryption algorithm uses two different keys for encryption and decryption, called the public key and the private key. Only the private key can decrypt the data encrypted by the key, and only the public key can decrypt the data encrypted by the private key. The private key is generated by a random number algorithm, the public key is generated according to the private key, and the public key and the private key are distributed in pairs. Among them, the public key is public, and the private key is privately held and strictly protected.

Each node is configured with a pair of public key and private key. The private key of the user terminal is pre-configured. After obtaining the digital digest, the user terminal encrypts the digital digest with the private key to obtain a digital signature.

S22: Send the digital signature and the encrypted note receivable file to a verification node.

In specific implementation, after obtaining the digital signature of the encrypted note receivable file, the user terminal sends the encrypted note receivable file and its digital signature to the verification node, so that the verification node verifies the integrity and source of the encrypted note receivable file. It should be noted that the verification node is a server used to verify the validity of a block.

After passing the verification of the encrypted note receivable file, the verification node returns the block containing the encrypted note receivable file to the user terminal.

S23. Receive the block returned by the verification node and add the block to the blockchain structure, the block being generated by the verification node according to the digital signature and the encrypted receipt file.

In specific implementation, after receiving the block confirmed by the verification node, the confirmed block is combined with the previous block in the local block chain structure (that is, the block chain structure maintained by the user terminal) in the order of occurrence The end of the block is connected to update the maintained blockchain, thereby realizing the storage of encrypted note receivable files in the blockchain.

S3: The user terminal encrypts the endorsement transfer business contract document to obtain the encrypted endorsement transfer business contract document.

In specific implementation, in order to ensure the security of the endorsement transfer contract document and avoid the disclosure of the content of the endorsement transfer contract document, the user terminal encrypts the endorsement transfer contract document to obtain the encrypted endorsement transfer contract document. The encrypted endorsement transfer contract documents obtained after encryption are more secure and guarantee the information security of the enterprise.

It should be noted that in order to ensure the reliability of the endorsement transfer business contract documents, both parties signing the endorsement transfer business contract documents need to add an electronic seal to the endorsement transfer business contract documents. The electronic seal is generated by both endorsing parties and signing their own private keys.

In an embodiment, the above step S3 specifically includes the following step S31.

S31: The user terminal encrypts the endorsement transfer contract document by using the preset symmetric key to obtain the encrypted endorsement transfer contract document.

In specific implementation, the user terminal encrypts the endorsement transfer contract document by using the preset symmetric key to obtain the encrypted endorsement transfer contract document.

Symmetric key encryption is also called private key encryption, that is, both parties sending and receiving data must use the same key to encrypt and decrypt the plaintext. Symmetric key encryption algorithms mainly include: DES, 3DES, IDEA, FEAL, BLOWFISH, etc. The method of symmetric key encryption is convenient for the related party (ie, the reviewer) to decrypt the encrypted endorsement transfer contract document.

S4: The user terminal stores the encrypted endorsement transfer service contract document in the blockchain.

In specific implementation, the user terminal stores the encrypted endorsement transfer business contract documents in the blockchain. Since the files stored in the blockchain cannot be tampered with, it can effectively ensure the security and reliability of the encrypted endorsement transfer business contract documents Sex.

In an embodiment, referring to FIG. 5, the above step S4 specifically includes the following steps S41-S43.

S41: Perform encryption processing on the encrypted endorsement transfer business contract document to obtain a digital signature.

In specific implementation, encryption processing refers to the encryption processing performed on the encrypted endorsement transfer business contract document through a cryptographic algorithm to ensure that the encrypted endorsement transfer business contract document cannot be tampered with. A digital signature is a string of anti-forgery strings used to verify the integrity and source of the encrypted endorsement transfer business contract document. The digital signature is obtained by encrypting the encrypted endorsement transfer business contract document, and the digital signature and the encrypted endorsement transfer business contract document are sent to the verification node, and the verification node verifies the integrity and source of the encrypted endorsement transfer business contract document.

In an embodiment, referring to FIG. 6, the above step S41 specifically includes the following steps S411-S412.

S411: Encrypt the encrypted endorsement transfer business contract document according to the hash algorithm to obtain a digital digest.

In specific implementation, the hash algorithm refers to an algorithm that can map messages of any length into fixed-length messages. The hash algorithm in this implementation uses any one of MD4, MD5, or SHA256. Among them, the encrypted endorsement transfer business contract document is the unencrypted plaintext. The plaintext is the characters that people can intuitively understand its meaning. The hash algorithm is used to encrypt the plaintext of any length into a string of fixed-length ciphertexts. The ciphertext is After the encrypted string, people cannot intuitively understand its meaning, this string of ciphertext is the digital digest.

S412: Encrypt the digital digest according to the pre-configured private key to obtain a digital signature.

In the specific implementation, the private key refers to the key distributed through the asymmetric encryption algorithm. The asymmetric encryption algorithm uses two different keys for encryption and decryption, called the public key and the private key. Only the private key can decrypt the data encrypted by the key, and only the public key can decrypt the data encrypted by the private key. The private key is generated by a random number algorithm, the public key is generated according to the private key, and the public key and the private key are distributed in pairs. Among them, the public key is public, and the private key is privately held and strictly protected.

Each node is configured with a pair of public key and private key. The private key of the user terminal is pre-configured. After obtaining the digital digest, the user terminal encrypts the digital digest with the private key to obtain a digital signature.

S42: Send the digital signature and the encrypted endorsement transfer service contract document to the verification node.

In specific implementation, after obtaining the digital signature of the encrypted endorsement transfer business contract document, the user terminal sends the encrypted endorsement transfer business contract document and its digital signature to the verification node, so that the verification node verifies the integrity of the encrypted endorsement transfer business contract document And source. It should be noted that the verification node is a server used to verify the validity of a block.

After passing the verification of the encrypted endorsement transfer business contract document, the verification node returns to the user terminal a block containing the encrypted endorsement transfer business contract document.

S43: Receive the block returned by the verification node and add the block to the blockchain structure, the block being generated by the verification node according to the digital signature and the encrypted endorsement transfer service contract document.

In specific implementation, after receiving the block confirmed by the verification node, the confirmed block is combined with the previous block in the local block chain structure (that is, the block chain structure maintained by the user terminal) in the order of occurrence The end of the block is connected to update the maintained block chain, thereby realizing the storage of the encrypted endorsement transfer business contract document in the block chain.

S5. The audit terminal obtains the encrypted note receivable file and the encrypted endorsement transfer business contract file from the blockchain.

In specific implementation, when the reviewer needs to review the above-mentioned endorsement transfer business, the review terminal (that is, the terminal used by the reviewer) obtains the encrypted note receivable document and the encrypted endorsement transfer business contract document from the blockchain through the review terminal.

Since the data on the blockchain cannot be changed, the reliability of the encrypted bills receivable file and the encrypted endorsement transfer business contract file is guaranteed. Furthermore, the data time nodes on the blockchain are clear, which is convenient for reviewers to review.

S6. The review terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable document and the endorsement transfer business contract document, so that the reviewer can verify the receivable The bill documents and the endorsement transfer business contract documents are reviewed.

In specific implementation, the review terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer service contract document to obtain the note receivable file and the endorsement transfer service contract document.

The bills receivable documents and the endorsement transfer business contract documents are unencrypted plain texts, which are characters that people can intuitively understand, so that the reviewer can review the bills receivable documents and the endorsement transfer business contract documents , To determine the compliance of the endorsement transfer.

In an embodiment, referring to FIG. 7, the above step S6 specifically includes the following steps S61-S63.

S61: The audit terminal receives the encrypted symmetric key sent by the user terminal, where the encrypted symmetric key is obtained by the user terminal after encrypting the symmetric key with the public key of the audit terminal.

In specific implementation, in order to enable the audit terminal to decrypt the encrypted note receivable file and the encrypted endorsement transfer service contract file, the user terminal encrypts the symmetric key with the public key of the audit terminal to obtain the encrypted symmetric key. Key, and send the encrypted symmetric key to the audit terminal. Correspondingly, the audit terminal receives the encrypted symmetric key sent by the user terminal. Only the private key of the audit terminal can decrypt the encrypted symmetric key obtained after the public key of the audit terminal encrypts the symmetric key, which ensures the security of the symmetric key.

S62: The audit terminal decrypts the encrypted symmetric key by using the private key of the audit terminal to obtain the symmetric key.

In specific implementation, the audit terminal decrypts the encrypted symmetric key by using the private key of the audit terminal to obtain the symmetric key.

S63. The review terminal decrypts the encrypted note receivable file and the encrypted endorsement transfer service contract document by using the symmetric key to obtain the note receivable file and the endorsement transfer service contract document.

In a specific implementation, after obtaining the symmetric key, the audit terminal decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document using the symmetric key to obtain the note receivable file and The endorsement transfer business contract document.

By applying the technical solution of the embodiment of this application, the user terminal encrypts the receipt document to obtain the encrypted receipt document; the user terminal stores the encrypted receipt document in the blockchain; the user terminal performs the endorsement transfer service contract document Encrypt to obtain the encrypted endorsement transfer business contract document; the user terminal stores the encrypted endorsement transfer business contract document in the blockchain; the audit terminal obtains the encrypted note receivable document and the encrypted endorsement transfer business contract document from the blockchain; The terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file and the endorsement transfer business contract document, so that the note receivable file and the endorsement transfer business contract document can be encrypted and stored on the blockchain On the one hand, it ensures the safety and reliability of the company's bills and avoids the possibility of bills being lost. On the other hand, due to the high reliability of the data on the blockchain and the clear time nodes, it is convenient for auditors to review the process of enterprise endorsement transfer, which saves a lot of audit time and improves the efficiency of the audit.

Fig. 8 is a schematic block diagram of a bill management system provided by an embodiment of the present application. As shown in FIG. 8, corresponding to the above bill management method, the present application also provides a bill management system 100. The bill management system 100 includes a user terminal 80 and an audit terminal 90. The user terminal 80 includes a first encryption unit 81, a first storage unit 82, a second encryption unit 83, and a second storage unit 84. The audit terminal 90 It includes an acquiring unit 91 and a first decrypting unit 92, where:

The first encryption unit 81 is configured to encrypt the receipt file to obtain an encrypted receipt file;

The first storage unit 82 is configured to store the encrypted note receivable file in the blockchain;

The second encryption unit 83 is configured to encrypt the endorsement transfer business contract document to obtain the encrypted endorsement transfer business contract document;

The second storage unit 84 is configured to store the encrypted endorsement transfer business contract document in the blockchain;

The obtaining unit 91 is configured to obtain the encrypted notes receivable file and the encrypted endorsement transfer business contract file from the blockchain;

The first decryption unit 92 is configured to decrypt the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file and the endorsement transfer business contract document, so that the reviewer can The bills receivable documents and the endorsement transfer business contract documents are reviewed.

Referring to FIG. 9, in an embodiment, the first encryption unit 81 includes a third encryption unit 811.

The third encryption unit 811 is configured to encrypt the receipt file with the preset symmetric key to obtain the encrypted receipt file.

Referring to FIG. 10, in an embodiment, the first storage unit 82 includes a fourth encryption unit 821, a first sending unit 822 and a first receiving unit 823.

The fourth encryption unit 821 is configured to perform encryption processing on the encrypted note receivable file to obtain a digital signature;

The first sending unit 822 is configured to send the digital signature and the encrypted note receivable file to a verification node;

The first receiving unit 823 is configured to receive the block returned by the verification node and add the block to the blockchain structure, the block being receivable by the verification node according to the digital signature and the encryption The ticket file is generated.

Referring to FIG. 11, in one embodiment, the fourth encryption unit 821 includes a fifth encryption unit 8211 and a sixth encryption unit 8212.

The fifth encryption unit 8211 is configured to encrypt the encrypted note receivable file according to a hash algorithm to obtain a digital digest;

The sixth encryption unit 8212 is configured to encrypt the digital digest according to the pre-configured private key to obtain a digital signature.

Referring to FIG. 12, in an embodiment, the second encryption unit 83 includes a seventh encryption unit 831.

The seventh encryption unit 831 is configured to encrypt the endorsement transfer contract document by using the symmetric key to obtain the encrypted endorsement transfer contract document.

Referring to FIG. 13, in an embodiment, the second storage unit 84 includes an eighth encryption unit 841, a second sending unit 842, and a second receiving unit 843.

The eighth encryption unit 841 is configured to perform encryption processing on the encrypted endorsement transfer business contract document to obtain a digital signature.

The second sending unit 842 is configured to send the digital signature and the encrypted endorsement transfer business contract document to the verification node;

The second receiving unit 843 is configured to receive the block returned by the verification node and add the block to the blockchain structure, and the block is transferred by the verification node according to the digital signature and the encrypted endorsement Business contract documents are generated.

Referring to FIG. 14, in an embodiment, the first decryption unit 92 includes a third receiving unit 921, a second decryption unit 922, and a third decryption unit 923.

The third receiving unit 921 is configured to receive an encrypted symmetric key sent by a user terminal, where the encrypted symmetric key is obtained by the user terminal after encrypting the symmetric key with the public key of the audit terminal;

The second decryption unit 922 is configured to decrypt the encrypted symmetric key by using the private key of the audit terminal to obtain the symmetric key;

The third decryption unit 923 is configured to decrypt the encrypted note receivable file and the encrypted endorsement transfer business contract document by using the symmetric key to obtain the note receivable file and the endorsement transfer business contract document.

It should be noted that those skilled in the art can clearly understand that the specific implementation process of the above-mentioned ticket management system and each unit can refer to the corresponding description in the foregoing method embodiment. For the convenience and brevity of the description, it will not be omitted here. Repeat.

The embodiment of the present application also proposes a bill management system. The bill management system includes at least two computer devices, including one user terminal and at least one review terminal. Please refer to FIG. 15. FIG. 15 is a schematic block diagram of a computer device provided by an embodiment of the present application. The computer device may be a user terminal or an audit terminal, and its hardware structure is the same. Referring to FIG. 15, the computer device 500 includes a processor 502, a memory, and a network interface 505 connected through a system bus 501, where the memory may include a non-volatile storage medium 503 and an internal memory 504.

Referring to FIG. 15, the computer device 500 includes a processor 502, a memory, and a network interface 505 connected through a system bus 501, where the memory may include a non-volatile storage medium 503 and an internal memory 504.

The non-volatile storage medium 503 can store an operating system 5031 and a computer program 5032. When the computer program 5032 is executed, the processor 502 can execute a ticket management method.

The processor 502 is used to provide calculation and control capabilities to support the operation of the entire computer device 500.

The internal memory 504 provides an environment for the operation of the computer program 5032 in the non-volatile storage medium 503. When the computer program 5032 is executed by the processor 502, the processor 502 can execute a ticket management method.

The network interface 505 is used for network communication with other devices. Those skilled in the art can understand that the structure shown in FIG. 15 is only a block diagram of part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device 500 to which the solution of the present application is applied. The specific computer device 500 may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

Wherein, the processor 502 of the user terminal and the audit terminal is used to run computer programs 5032 stored in their respective memories to jointly implement the following steps:

The user terminal encrypts the receipt document to obtain the encrypted receipt document;

The user terminal stores the encrypted note receivable file in the blockchain;

The user terminal encrypts the endorsement transfer business contract document to obtain the encrypted endorsement transfer business contract document;

The user terminal stores the encrypted endorsement transfer business contract document in the blockchain;

The audit terminal obtains the encrypted notes receivable file and the encrypted endorsement transfer business contract file from the blockchain;

The audit terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file and the endorsement transfer business contract document, so that the auditor can verify the note receivable file And the endorsement transfer business contract documents are reviewed.

In one embodiment, when the processor 502 of the user terminal implements the step of encrypting the receipt file by the user terminal to obtain the encrypted receipt file, it specifically implements the following steps:

Encrypt the receipt file by the preset symmetric key to obtain the encrypted receipt file.

In an embodiment, when the processor 502 of the user terminal implements the step of storing the encrypted note receivable file in the blockchain by the user terminal, it specifically implements the following steps:

Performing encryption processing on the encrypted note receivable file to obtain a digital signature;

Sending the digital signature and the encrypted note receivable file to a verification node;

The block returned by the verification node is received and the block is added to the blockchain structure, the block is generated by the verification node according to the digital signature and the encrypted receipt file.

In an embodiment, when the processor 502 of the user terminal implements the step of encrypting the encrypted note receivable file to obtain a digital signature, it specifically implements the following steps:

Encrypting the encrypted note receivable file according to a hash algorithm to obtain a digital digest;

The digital digest is encrypted according to the pre-configured private key to obtain a digital signature.

In an embodiment, when the processor 502 of the user terminal implements the step of encrypting the endorsement transfer service contract document by the user terminal to obtain the encrypted endorsement transfer service contract document, the following steps are specifically implemented:

The endorsement transfer contract document is encrypted by the symmetric key to obtain the encrypted endorsement transfer contract document.

In one embodiment, when the processor 502 of the user terminal implements the step of storing the encrypted endorsement transfer business contract document in the blockchain by the user terminal, the following steps are specifically implemented:

Performing encryption processing on the encrypted endorsement transfer business contract document to obtain a digital signature;

Sending the digital signature and the encrypted endorsement transfer business contract document to the verification node;

The block returned by the verification node is received and the block is added to the blockchain structure, the block is generated by the verification node according to the digital signature and the encrypted endorsement transfer business contract document.

In one embodiment, the processor 502 of the audit terminal implements that the audit terminal decrypts the encrypted note receivable file and the encrypted endorsement transfer service contract file to obtain the note receivable file and the endorsement. When transferring the business contract documents, the specific steps are as follows:

Receiving an encrypted symmetric key sent by a user terminal, where the encrypted symmetric key is obtained by the user terminal after encrypting the symmetric key with the public key of the audit terminal;

Decrypt the encrypted symmetric key by auditing the private key of the terminal to obtain the symmetric key;

The encrypted note receivable file and the encrypted endorsement transfer service contract document are decrypted by the symmetric key to obtain the note receivable file and the endorsement transfer service contract document.

It should be understood that, in the embodiment of the present application, the processor 502 may be a central processing unit (Central Processing Unit, CPU), and the processor 502 may also be other general-purpose processors, digital signal processors (DSP), Application Specific Integrated Circuit (ASIC), ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the foregoing embodiments can be implemented by computer programs instructing relevant hardware. The computer program may be stored in a storage medium, and the storage medium is a computer-readable storage medium. The computer program is executed by at least one processor in the computer system to implement the process steps of the foregoing method embodiment.

Therefore, this application also provides a storage medium. The storage medium may be a computer-readable storage medium. The storage medium stores a first computer program and a second computer program, and when the first computer program and the second computer program are respectively executed by the processor of the user terminal and the processor of the audit terminal, the following steps can be implemented:

The user terminal encrypts the receipt document to obtain the encrypted receipt document;

The user terminal stores the encrypted note receivable file in the blockchain;

The user terminal encrypts the endorsement transfer business contract document to obtain the encrypted endorsement transfer business contract document;

The user terminal stores the encrypted endorsement transfer business contract document in the blockchain;

The audit terminal obtains the encrypted notes receivable file and the encrypted endorsement transfer business contract file from the blockchain;

The audit terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file and the endorsement transfer business contract document, so that the auditor can verify the note receivable file And the endorsement transfer business contract documents are reviewed.

In an embodiment, when the processor executes the computer program to realize the step of encrypting the receipt file by the user terminal to obtain the encrypted receipt file, the following steps are specifically implemented:

Encrypt the receipt file by the preset symmetric key to obtain the encrypted receipt file.

In an embodiment, when the processor executes the computer program to implement the step of storing the encrypted note receivable file in the blockchain by the user terminal, the following steps are specifically implemented:

Performing encryption processing on the encrypted note receivable file to obtain a digital signature;

Sending the digital signature and the encrypted note receivable file to a verification node;

The block returned by the verification node is received and the block is added to the blockchain structure, the block is generated by the verification node according to the digital signature and the encrypted receipt file.

In an embodiment, when the processor executes the computer program to implement the step of encrypting the encrypted note receivable file to obtain a digital signature, the processor specifically implements the following steps:

Encrypting the encrypted note receivable file according to a hash algorithm to obtain a digital digest;

The digital digest is encrypted according to the pre-configured private key to obtain a digital signature.

In an embodiment, when the processor executes the computer program to implement the step of encrypting the endorsement transfer service contract document by the user terminal to obtain the encrypted endorsement transfer service contract document, the following steps are specifically implemented:

The endorsement transfer contract document is encrypted by the symmetric key to obtain the encrypted endorsement transfer contract document.

In an embodiment, when the processor executes the computer program to implement the step of storing the encrypted endorsement transfer business contract document in the blockchain by the user terminal, the following steps are specifically implemented:

Performing encryption processing on the encrypted endorsement transfer business contract document to obtain a digital signature;

Sending the digital signature and the encrypted endorsement transfer business contract document to the verification node;

The block returned by the verification node is received and the block is added to the blockchain structure, the block is generated by the verification node according to the digital signature and the encrypted endorsement transfer business contract document.

In an embodiment, the processor executes the computer program to realize that the audit terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file And when the steps of endorsing and transferring the business contract documents, the specific steps are as follows:

Receiving an encrypted symmetric key sent by a user terminal, where the encrypted symmetric key is obtained by the user terminal after encrypting the symmetric key with the public key of the audit terminal;

Decrypt the encrypted symmetric key by auditing the private key of the terminal to obtain the symmetric key;

The encrypted note receivable file and the encrypted endorsement transfer service contract document are decrypted by the symmetric key to obtain the note receivable file and the endorsement transfer service contract document.

The computer-readable storage medium may be non-volatile or volatile. The storage medium may be a U disk, a mobile hard disk, a read-only memory (Read-Only Memory, ROM), a magnetic disk or an optical disk, and other computer-readable storage media that can store program codes.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two, in order to clearly illustrate the hardware and software Interchangeability. In the above description, the composition and steps of each example have been generally described in terms of function. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

In the several embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of each unit is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be omitted or not implemented.

The steps in the method of the embodiment of the present application can be adjusted, merged, and deleted in order according to actual needs. The units in the devices in the embodiments of the present application may be combined, divided, and deleted according to actual needs. In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of this application is essentially or the part that contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium It includes several instructions to make a computer device (which may be a personal computer, a terminal, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.

Claims (20)

1. A bill management method, including:

   The user terminal encrypts the receipt document to obtain the encrypted receipt document;

   The user terminal stores the encrypted note receivable file in the blockchain;

   The user terminal encrypts the endorsement transfer business contract document to obtain the encrypted endorsement transfer business contract document;

   The user terminal stores the encrypted endorsement transfer business contract document in the blockchain;

   The audit terminal obtains the encrypted notes receivable file and the encrypted endorsement transfer business contract file from the blockchain;

   The audit terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file and the endorsement transfer business contract document, so that the auditor can verify the note receivable file And the endorsement transfer business contract documents are reviewed.
2. The method according to claim 1, wherein the user terminal encrypts the receipt file to obtain an encrypted receipt file, comprising:

   Encrypt the receipt file by the preset symmetric key to obtain the encrypted receipt file.
3. The method according to claim 1, wherein the user terminal storing the encrypted notes receivable file in a blockchain includes:

   Performing encryption processing on the encrypted note receivable file to obtain a digital signature;

   Sending the digital signature and the encrypted note receivable file to a verification node;

   The block returned by the verification node is received and the block is added to the blockchain structure, the block is generated by the verification node according to the digital signature and the encrypted receipt file.
4. The method according to claim 3, wherein said encrypting said encrypted note receivable file to obtain a digital signature comprises:

   Encrypting the encrypted note receivable file according to a hash algorithm to obtain a digital digest;

   The digital digest is encrypted according to the pre-configured private key to obtain a digital signature.
5. According to the method of claim 2, the user terminal encrypting the endorsement transfer service contract document to obtain the encrypted endorsement transfer service contract document, comprising:

   The endorsement transfer contract document is encrypted by the symmetric key to obtain the encrypted endorsement transfer contract document.
6. The method according to claim 1, wherein the user terminal storing the encrypted endorsement transfer service contract document in a blockchain includes:

   Performing encryption processing on the encrypted endorsement transfer business contract document to obtain a digital signature;

   Sending the digital signature and the encrypted endorsement transfer business contract document to the verification node;

   The block returned by the verification node is received and the block is added to the blockchain structure, the block is generated by the verification node according to the digital signature and the encrypted endorsement transfer business contract document.
7. According to the method of claim 5, the review terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer service contract document to obtain the note receivable file and the endorsement transfer service contract document, include:

   Receiving an encrypted symmetric key sent by a user terminal, where the encrypted symmetric key is obtained by the user terminal after encrypting the symmetric key with the public key of the audit terminal;

   Decrypt the encrypted symmetric key by auditing the private key of the terminal to obtain the symmetric key;

   The encrypted note receivable file and the encrypted endorsement transfer service contract document are decrypted by the symmetric key to obtain the note receivable file and the endorsement transfer service contract document.
8. A bill management system, the bill management system includes a user terminal and an audit terminal, the user terminal includes a first encryption unit, a first storage unit, a second encryption unit, and a second storage unit, the audit terminal includes an acquisition unit And the first decryption unit, where:

   The first encryption unit is used to encrypt the receipt document to obtain an encrypted receipt document;

   The first storage unit is used to store the encrypted note receivable file in the blockchain;

   The second encryption unit is used to encrypt the endorsement transfer business contract document to obtain the encrypted endorsement transfer business contract document;

   The second storage unit is used to store the encrypted endorsement transfer business contract document in the blockchain;

   An obtaining unit, configured to obtain the encrypted notes receivable file and the encrypted endorsement transfer business contract file from the blockchain;

   The first decryption unit is used to decrypt the encrypted note receivable file and the encrypted endorsement transfer business contract file to obtain the note receivable file and the endorsement transfer business contract document, so that the reviewer can Review the bills receivable documents and the endorsement transfer business contract documents.
9. A computer device includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor. The processor implements a ticket management method when the program is executed, and includes:

   The user terminal encrypts the receipt document to obtain the encrypted receipt document;

   The user terminal stores the encrypted note receivable file in the blockchain;

   The user terminal encrypts the endorsement transfer business contract document to obtain the encrypted endorsement transfer business contract document;

   The user terminal stores the encrypted endorsement transfer business contract document in the blockchain;

   The audit terminal obtains the encrypted notes receivable file and the encrypted endorsement transfer business contract file from the blockchain;

   The audit terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file and the endorsement transfer business contract document, so that the auditor can verify the note receivable file And the endorsement transfer business contract documents are reviewed.
10. 8. The computer device according to claim 9, wherein the user terminal encrypts the receipt file to obtain the encrypted receipt file, comprising:

    Encrypt the receipt file by the preset symmetric key to obtain the encrypted receipt file.
11. The computer device according to claim 9, wherein the user terminal storing the encrypted note receivable file in a blockchain includes:

    Performing encryption processing on the encrypted note receivable file to obtain a digital signature;

    Sending the digital signature and the encrypted note receivable file to a verification node;

    The block returned by the verification node is received and the block is added to the blockchain structure, the block is generated by the verification node according to the digital signature and the encrypted receipt file.
12. 11. The computer device according to claim 11, wherein said encrypting said encrypted note receivable file to obtain a digital signature comprises:

    Encrypting the encrypted note receivable file according to a hash algorithm to obtain a digital digest;

    The digital digest is encrypted according to the pre-configured private key to obtain a digital signature.
13. 10. The computer device according to claim 10, wherein the user terminal encrypts the endorsement transfer service contract document to obtain the encrypted endorsement transfer service contract document, comprising:

    The endorsement transfer contract document is encrypted by the symmetric key to obtain the encrypted endorsement transfer contract document.
14. The computer device according to claim 9, wherein the user terminal storing the encrypted endorsement transfer business contract document in a blockchain, comprising:

    Performing encryption processing on the encrypted endorsement transfer business contract document to obtain a digital signature;

    Sending the digital signature and the encrypted endorsement transfer business contract document to the verification node;

    The block returned by the verification node is received and the block is added to the blockchain structure, the block is generated by the verification node according to the digital signature and the encrypted endorsement transfer business contract document.
15. The computer device according to claim 13, wherein the verification terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer service contract document to obtain the note receivable file and the endorsement transfer service contract document ,include:

    Receiving an encrypted symmetric key sent by a user terminal, where the encrypted symmetric key is obtained by the user terminal after encrypting the symmetric key with the public key of the audit terminal;

    Decrypt the encrypted symmetric key by auditing the private key of the terminal to obtain the symmetric key;

    The encrypted note receivable file and the encrypted endorsement transfer service contract document are decrypted by the symmetric key to obtain the note receivable file and the endorsement transfer service contract document.
16. A computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, a method for managing a bill is realized, including:

    The user terminal encrypts the receipt document to obtain the encrypted receipt document;

    The user terminal stores the encrypted note receivable file in the blockchain;

    The user terminal encrypts the endorsement transfer business contract document to obtain the encrypted endorsement transfer business contract document;

    The user terminal stores the encrypted endorsement transfer business contract document in the blockchain;

    The audit terminal obtains the encrypted notes receivable file and the encrypted endorsement transfer business contract file from the blockchain;

    The audit terminal respectively decrypts the encrypted note receivable file and the encrypted endorsement transfer business contract document to obtain the note receivable file and the endorsement transfer business contract document, so that the auditor can verify the note receivable file And the endorsement transfer business contract documents are reviewed.
17. The computer-readable storage medium according to claim 16, wherein the user terminal encrypts the receipt file to obtain the encrypted receipt file, comprising:

    Encrypt the receipt file by the preset symmetric key to obtain the encrypted receipt file.
18. The computer-readable storage medium according to claim 17, wherein the user terminal storing the encrypted note receivable file in a blockchain includes:

    Performing encryption processing on the encrypted note receivable file to obtain a digital signature;

    Sending the digital signature and the encrypted note receivable file to a verification node;

    The block returned by the verification node is received and the block is added to the blockchain structure, the block is generated by the verification node according to the digital signature and the encrypted receipt file.
19. The computer-readable storage medium according to claim 18, wherein said encrypting said encrypted note receivable file to obtain a digital signature comprises:

    Encrypting the encrypted note receivable file according to a hash algorithm to obtain a digital digest;

    The digital digest is encrypted according to the pre-configured private key to obtain a digital signature.
20. The computer-readable storage medium according to claim 17, wherein the user terminal encrypts the endorsement transfer service contract document to obtain the encrypted endorsement transfer service contract document, comprising:

    The endorsement transfer contract document is encrypted by the symmetric key to obtain the encrypted endorsement transfer contract document.

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