CN115310894A - Purchasing contract management method - Google Patents
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- CN115310894A CN115310894A CN202210779523.5A CN202210779523A CN115310894A CN 115310894 A CN115310894 A CN 115310894A CN 202210779523 A CN202210779523 A CN 202210779523A CN 115310894 A CN115310894 A CN 115310894A
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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
- G06Q10/00—Administration; Management
- G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
- G06Q10/087—Inventory or stock management, e.g. order filling, procurement or balancing against orders
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6209—Protecting access to data via a platform, e.g. using keys or access control rules to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
- G06F21/6227—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database where protection concerns the structure of data, e.g. records, types, queries
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F40/00—Handling natural language data
- G06F40/10—Text processing
- G06F40/166—Editing, e.g. inserting or deleting
- G06F40/186—Templates
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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
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/10—Services
- G06Q50/18—Legal services; Handling legal documents
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
- G06F2211/007—Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
Abstract
The invention provides a purchasing contract management method in the technical field of electronic information management, which comprises the following steps: s10, an intermediate service provider creates an electronic contract template; s20, the buyer generates a first electronic contract based on the purchasing data and the electronic contract template, and the first electronic contract is electronically signed and then sent to the supplier; s30, adding the supply data into the first electronic contract by the supplier, carrying out electronic signature to obtain a second electronic contract and sending the second electronic contract to the intermediate service provider; s40, performing anti-counterfeiting operation on the second electronic contract by the intermediate service provider to obtain a third electronic contract; s50, encrypting and storing the third electronic contract, and recording contract monitoring information of the third electronic contract in a pre-established contract management table; step S60, backing up the third electronic contract and the contract management table; and step S70, managing the third electronic contract based on the contract management table. The invention has the advantages that: the efficiency and the security of purchasing contract management are greatly improved.
Description
Technical Field
The invention relates to the technical field of electronic information management, in particular to a purchasing contract management method.
Background
The contract is an agreement for establishing, changing and terminating civil legal relationships among the civil subjects. With the continuous development of economy, trade traffic is increased more and more, contract signing is more and more trivial, and in the operation process of enterprises, contracts become an indispensable part, so the demand of contract management is generated.
Conventionally, when an enterprise (a buyer) needs to purchase goods from a provider, the enterprise needs to formulate and print a purchase contract by itself, and sign and seal the purchase contract by both parties, and only after the contract becomes effective, the corresponding order is delivered, or an intermediate facilitator matches the transaction between the buyer and the provider, which is tedious and not easy to lose the paper contract, and brings inconvenience to contract management such as later reconciliation, overdue and the like. Although the electronic contract already exists to a certain extent, the above problems can be overcome, however, the traditional electronic contract only electronizes the paper contract, and some anti-counterfeiting measures are not added, so that the electronic contract is easy to be forged, and the traditional electronic contract is generally only stored in the server and is not backed up, once the server fails, related services need to wait until the server is recovered, and purchasing and operation of enterprises are affected.
Therefore, how to provide a method for managing a purchase contract to improve the efficiency and safety of the management of the purchase contract becomes a technical problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a purchasing contract management method, which can improve the efficiency and the safety of purchasing contract management.
The invention is realized by the following steps: a purchasing contract management method comprises the following steps:
s10, the intermediate service provider creates a corresponding electronic contract template based on the purchase contract type;
s20, the buyer automatically generates a first electronic contract based on the purchasing data and the electronic contract template, and the first electronic contract is electronically signed and then forwarded to the supplier by the intermediate server;
step S30, the supplier adds the supply data into the first electronic contract, carries out electronic signature to obtain a second electronic contract and sends the second electronic contract to the intermediate service provider;
s40, performing anti-counterfeiting operation on the second electronic contract by an intermediate service provider to obtain a third electronic contract;
step S50, encrypting and storing the third electronic contract, and recording the contract monitoring information of the third electronic contract in a pre-established contract management table;
step S60, backing up the third electronic contract and a contract management table;
and S70, managing the third electronic contract based on the contract management table.
Further, the step S10 is specifically:
the intermediate facilitator sets contract attributes including attribute names, attribute descriptions, variable modules, display modes and whether the contract attributes need to be filled or not through a visual interface based on the purchase contract types including purchase order contracts and bidding item contracts, and drags the contract attributes to generate corresponding electronic contract templates.
Further, the variable module is a template name, a template state, a use role, a service type, a template description, contract basic information, delivery time, a delivery place, a delivery mode, contract signing party information, a form variable or a CA variable;
the template state is activated or deactivated; the using role is a buyer or a supplier; the display mode is a text box, a drop-down box, a radio box or a check box.
Further, the step S20 specifically includes:
s21, an intermediate service provider creates a pair of private key and public key, and sends the public key to a buyer and a supplier;
s22, the intermediate service provider acquires a request based on the electronic contract template sent by the buyer, encrypts the electronic contract template by using the private key and sends the encrypted electronic contract template to the buyer through an API (application programming interface);
s23, a buyer sets purchasing data, decrypts the electronic contract template based on the received public key, automatically fills the purchasing data into the electronic contract template and carries out electronic signature based on the mapping relation between the purchasing data and the electronic contract template, and then generates a first electronic contract;
s24, the buyer encrypts the first electronic contract through the public key and sends the first electronic contract to the intermediate facilitator;
and S25, the intermediate service provider decrypts the received first electronic contract by using the private key, encrypts the first electronic contract by using the private key and sends the first electronic contract to the supplier.
Further, the step S30 specifically includes:
step S31, the supplier decrypts the first electronic contract based on the received public key, sets the supply data, and automatically fills the supply data into the first electronic contract based on the mapping relation between the supply data and the electronic contract template;
and S32, the supplier carries out electronic signature on the first electronic contract filled with the supply data to obtain a second electronic contract, and the second electronic contract is encrypted through the public key and is sent to the intermediate service provider.
Further, the step S40 specifically includes:
and the intermediate service provider generates an anti-counterfeiting two-dimensional code to be attached to the second electronic contract, performs hash calculation on a first preset field of the second electronic contract to obtain a first hash value, extracts a character string with a specified length from a specified position in the first hash value, and renames the second electronic contract based on the character string to obtain a third electronic contract.
Further, the anti-counterfeiting two-dimensional code is generated based on the timestamp, the contract validity period and the second hash value; and the second hash value is obtained by performing hash calculation on the timestamp, the contract validity period and a second preset field of the second electronic contract.
Further, the step S50 specifically includes:
the intermediate service provider sets a storage address and creates a contract management table;
encrypting the third electronic contract by using a selected encryption algorithm, recording the contract monitoring information of the third electronic contract in a contract management table, wherein the contract monitoring information is stored in a storage address;
the contract monitoring information at least comprises contract creation time, contract validity period, contract state, contract creator and storage address; the contract status is enabled or disabled.
Further, the step S60 specifically includes:
and performing distributed storage on the third electronic contract and the contract management table based on a block chain technology to backup the third electronic contract and the contract management table.
Further, the step S70 specifically includes:
and calling a third electronic contract based on the storage address of the contract management table, and automatically updating the contract state based on the contract creation time and the contract validity period of the contract management table so as to manage the third electronic contract.
The invention has the advantages that:
1. creating an electronic contract template through a visual interface, filling purchase data into the electronic contract template, performing electronic signature to generate a first electronic contract, filling supply data into the first electronic contract, performing electronic signature to generate a second electronic contract, performing anti-counterfeiting operation on the second electronic contract to obtain a third electronic contract, recording contract monitoring information of the third electronic contract in a pre-created contract management table, and backing up the third electronic contract and the contract management table based on a block chain technology; the electronic contract is adopted to replace the traditional paper contract, the contract management table is set to be used for quickly positioning and searching the third electronic contract, the third electronic contract and the contract management table are backed up, the third electronic contract can be inquired and called at any time, and the efficiency of purchasing contract management is greatly improved.
2. The method comprises the steps of obtaining a first electronic contract through an electronic signature of a buyer, obtaining a second electronic contract through the electronic signature of a supplier, carrying out anti-counterfeiting operation including adding anti-counterfeiting two-dimensional codes and renaming according to a set rule on the second electronic contract to obtain a third contract, encrypting the third electronic contract, carrying out decentralized storage on the third electronic contract by utilizing a block chain technology, and adopting six safety protection measures in the front and back, thereby greatly improving the safety of purchasing contract management.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a flow chart of a method of managing a procurement contract of the invention.
FIG. 2 is a flow chart of a method for managing a purchase contract according to the present invention.
Detailed Description
The technical scheme in the embodiment of the application has the following general idea: generating an electronic contract through an electronic contract template established by a visual interface, performing electronic signature and anti-counterfeiting operation on the electronic contract on line, recording contract monitoring information in a pre-established contract management table, and backing up the electronic contract and the contract management table based on a block chain technology; the electronic contract is adopted to replace the traditional paper contract, a contract management table is set for quickly positioning and searching the electronic contract, and data is backed up to ensure that the electronic contract can be inquired and called at any time, so that the efficiency of purchasing contract management is improved; the security of purchasing contract management is improved by carrying out electronic signature on the electronic contract, adding the anti-counterfeiting two-dimensional code, renaming according to a set rule, encrypting and storing in a centralized manner.
Referring to fig. 1 to fig. 2, a preferred embodiment of a purchasing contract management method of the present invention includes the following steps:
s10, the intermediate service provider creates a corresponding electronic contract template based on the type of the purchase contract, such as an electronic contract template of a purchase order contract or an electronic contract template of a bid item contract;
step S20, the buyer automatically generates a first electronic contract based on the purchasing data and the electronic contract template, and the first electronic contract is subjected to electronic signature (CA signature) and then forwarded to the supplier by the intermediate server; the electronic signature is an expression form of the electronic signature, the electronic signature operation is converted into a visual effect which is the same as the paper document stamping operation by using an image processing technology, and meanwhile, the authenticity and the integrity of electronic information and the non-repudiation of a signer are guaranteed by using the electronic signature technology;
step S30, the supplier adds the supply data into the first electronic contract, carries out electronic signature to obtain a second electronic contract and sends the second electronic contract to the intermediate service provider;
s40, performing anti-counterfeiting operation on the second electronic contract by an intermediate service provider to obtain a third electronic contract, and further improving the threshold of electronic contract counterfeiting to ensure the safety of the electronic contract;
step S50, encrypting and storing the third electronic contract, and recording the contract monitoring information of the third electronic contract in a pre-established contract management table so as to facilitate subsequent contract management;
step S60, backing up the third electronic contract and the contract management table to ensure that the third electronic contract can be inquired and called at any time, and avoiding influence on purchase and operation of an enterprise due to data loss; the third electronic contract is also sent to the corresponding buyer and supplier;
and step S70, managing the third electronic contract based on the contract management table, namely performing full-process management of electronic signature, anti-counterfeiting operation, encryption, addition, deletion, modification, calling and contract state updating on the electronic contract.
The step S10 specifically includes:
the intermediate facilitator sets contract attributes including attribute names, attribute descriptions, variable modules, display modes and whether the contract attributes need to be filled or not through a visual interface based on the purchase contract types including purchase order contracts and bidding item contracts, and drags the contract attributes to generate corresponding electronic contract templates.
The variable module is template name, template state, use role, service type, template description, contract basic information, delivery time, delivery location, delivery mode, information of both sides of contract signing, table variable or CA variable;
the basic contract information at least comprises a contract name, a contract number, an order number, a signing place, contract creating time, a contract validity period, a purchasing mode, a contract amount capitalization, a payment mode, an enterprise legal person and the like; the information of both sides signing the contract at least comprises a buyer, a purchasing department, a purchasing agency, a purchasing legal person, a purchasing party address, a supplier, a unified social credit code, an account opening bank, a bank account number, a supplier legal person and a supplier address; the form variables at least include a horizontal form, a vertical form, a serial number, a commodity name, a brand, a model, a quantity, a unit price, a total and after-sales service;
the template state is activated or deactivated; the using role is a buyer or a supplier; the display mode is a text box, a drop-down box, a radio box or a check box.
The step S20 specifically includes:
s21, an intermediate service provider creates a pair of private key and public key, and sends the public key to a buyer and a supplier; the data encrypted by the public key can only be decrypted by the public key, and the data encrypted by the private key can only be decrypted by the public key;
s22, the intermediate service provider acquires a request based on the electronic contract template sent by the buyer, encrypts the electronic contract template by using the private key and sends the encrypted electronic contract template to the buyer through an API (application programming interface);
step S23, a buyer sets purchasing data, decrypts the electronic contract template based on the received public key, automatically fills the purchasing data into the electronic contract template and carries out electronic signature based on the mapping relation between the purchasing data and the electronic contract template, and then generates a first electronic contract;
s24, the buyer encrypts the first electronic contract through the public key and sends the first electronic contract to the intermediate facilitator;
and S25, the intermediate service provider decrypts the received first electronic contract by using the private key, encrypts the first electronic contract by using the private key and sends the first electronic contract to the supplier.
The step S30 specifically includes:
step S31, the supplier decrypts the first electronic contract based on the received public key, sets the supply data, and automatically fills the supply data into the first electronic contract based on the mapping relation between the supply data and the electronic contract template; the purchase data and the supply data are automatically filled in through the preset mapping relation, the efficiency of generating the electronic contract is greatly improved, and the risk of data filling errors is also reduced.
And S32, the supplier carries out electronic signature on the first electronic contract filled with the supply data to obtain a second electronic contract, and the second electronic contract is encrypted through the public key and is sent to the intermediate service provider. The first electronic contract and the second electronic contract are transmitted in an encrypted mode, so that the first electronic contract and the second electronic contract are prevented from being stolen by plaintext in the transmission process, and the safety is greatly improved.
The step S40 is specifically:
and the intermediate service provider generates an anti-counterfeiting two-dimensional code to be attached to the second electronic contract, performs hash calculation on a first preset field of the second electronic contract to obtain a first hash value, extracts a character string with a specified length from a specified position in the first hash value, and renames the second electronic contract based on the character string to obtain a third electronic contract.
The anti-counterfeiting two-dimensional code is generated based on the timestamp, the contract validity period and the second hash value; and the second hash value is obtained by performing hash calculation on the timestamp, the contract validity period and a second preset field of the second electronic contract.
And when the third electronic contract is called subsequently, the third electronic contract needs to be checked based on anti-counterfeiting measures, namely, a first preset field of the third electronic contract is subjected to Hash calculation to obtain a third Hash value, a second character string with a specified length is extracted from a specified position in the third Hash value, whether the file names of the second character string and the third electronic contract are consistent or not is judged, and if yes, the anti-counterfeiting two-dimensional code is checked continuously.
When the anti-counterfeiting two-dimensional code is verified, the anti-counterfeiting two-dimensional code is firstly analyzed to obtain a timestamp, a contract validity period and a second hash value, the timestamp, the contract validity period and a second preset field of a third electronic contract are subjected to hash calculation to obtain a fourth hash value, whether the second hash value is consistent with the fourth hash value or not is judged, and whether the third electronic contract is overdue or not is judged based on the timestamp and the contract validity period; and if the second hash value is consistent with the fourth hash value and the third electronic contract is not expired, the third electronic contract passes the verification.
The step S50 is specifically:
the intermediate service provider sets a storage address and creates a contract management table; by creating the storage address and storing the storage address to a contract management table, the third electronic contract can be conveniently and quickly called through the contract management table in the follow-up process;
encrypting the third electronic contract by using a selected encryption algorithm, recording the contract monitoring information of the third electronic contract in a contract management table, wherein the contract monitoring information is stored in a storage address; the third electronic contract is encrypted and stored through an encryption algorithm, so that the safety is further improved;
the contract monitoring information at least comprises contract creation time, contract validity period, contract state, contract creator and storage address; the contract status is enabled or disabled.
The step S60 specifically includes:
performing distributed storage on the third electronic contract and the contract management table based on a block chain technology to backup the third electronic contract and the contract management table; the decentralized storage is carried out through the block chain technology, so that the third electronic contract and the contract management table can be prevented from being tampered;
the step S70 is specifically:
calling a third electronic contract based on the storage address of the contract management table, for example, calling the third electronic contract for automatic reconciliation, and automatically updating the contract state based on the contract creation time and the contract validity period of the contract management table to manage the third electronic contract, wherein the third electronic contract can be subjected to addition, deletion, modification and check based on the contract management table; and after the contract management table and the third electronic contract are updated, synchronously backing up through a block chain technology.
In summary, the invention has the advantages that:
1. creating an electronic contract template through a visual interface, filling purchase data into the electronic contract template, performing electronic signature to generate a first electronic contract, filling supply data into the first electronic contract, performing electronic signature to generate a second electronic contract, performing anti-counterfeiting operation on the second electronic contract to obtain a third electronic contract, recording contract monitoring information of the third electronic contract in a pre-created contract management table, and backing up the third electronic contract and the contract management table based on a block chain technology; the electronic contract is adopted to replace the traditional paper contract, the contract management table is set for quickly positioning and searching the third electronic contract, the third electronic contract and the contract management table are backed up, the third electronic contract can be inquired and called at any time, and the efficiency of purchasing contract management is greatly improved.
2. The method comprises the steps of obtaining a first electronic contract through an electronic signature of a buyer, obtaining a second electronic contract through the electronic signature of a supplier, carrying out anti-counterfeiting operation including adding anti-counterfeiting two-dimensional codes and renaming according to a set rule on the second electronic contract to obtain a third contract, encrypting the third electronic contract, carrying out decentralized storage on the third electronic contract by utilizing a block chain technology, and adopting six safety protection measures in the front and back, thereby greatly improving the safety of purchasing contract management.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (10)
1. A purchasing contract management method is characterized in that: the method comprises the following steps:
s10, the intermediate service provider creates a corresponding electronic contract template based on the type of the purchase contract;
step S20, the buyer automatically generates a first electronic contract based on the purchasing data and the electronic contract template, and the first electronic contract is electronically signed and then forwarded to the supplier by the intermediate server;
step S30, the supplier adds the supply data into the first electronic contract, carries out electronic signature to obtain a second electronic contract and sends the second electronic contract to the intermediate service provider;
s40, performing anti-counterfeiting operation on the second electronic contract by an intermediate service provider to obtain a third electronic contract;
step S50, encrypting and storing the third electronic contract, and recording the contract monitoring information of the third electronic contract in a pre-established contract management table;
step S60, backing up the third electronic contract and a contract management table;
and S70, managing the third electronic contract based on the contract management table.
2. The procurement contract management method of claim 1 characterized by: the step S10 specifically includes:
the intermediate facilitator sets attribute names, attribute descriptions, variable modules, display modes and contract attributes which are required to be filled or not through a visual interface based on the purchase contract types including purchase order contracts and bidding item contracts, and drags each contract attribute to generate a corresponding electronic contract template.
3. The procurement contract management method of claim 2 characterized by: the variable module is template name, template state, use role, service type, template description, contract basic information, delivery time, delivery location, delivery mode, information of both sides of contract signing, table variable or CA variable;
the template state is activated or deactivated; the using role is a buyer or a supplier; the display mode is a text box, a drop-down box, a radio box or a check box.
4. The procurement contract management method of claim 1 characterized by: the step S20 specifically includes:
s21, an intermediate service provider creates a pair of private key and public key, and sends the public key to a buyer and a supplier;
s22, the intermediate service provider encrypts the electronic contract template by using the private key and sends the electronic contract template to the buyer through an API (application program interface) based on the electronic contract template acquisition request sent by the buyer;
step S23, a buyer sets purchasing data, decrypts the electronic contract template based on the received public key, automatically fills the purchasing data into the electronic contract template and carries out electronic signature based on the mapping relation between the purchasing data and the electronic contract template, and then generates a first electronic contract;
s24, the buyer encrypts the first electronic contract through the public key and sends the first electronic contract to the intermediate facilitator;
and S25, the intermediate service provider decrypts the received first electronic contract by using the private key, encrypts the first electronic contract by using the private key and sends the first electronic contract to the supplier.
5. The procurement contract management method of claim 4 characterized by: the step S30 specifically includes:
step S31, the supplier decrypts the first electronic contract based on the received public key, sets the supply data, and automatically fills the supply data into the first electronic contract based on the mapping relation between the supply data and the electronic contract template;
and S32, the supplier carries out electronic signature on the first electronic contract filled with the supply data to obtain a second electronic contract, and the second electronic contract is encrypted through the public key and is sent to the intermediate service provider.
6. The procurement contract management method of claim 1 characterized by: the step S40 is specifically:
and the intermediate service provider generates an anti-counterfeiting two-dimensional code to be attached to the second electronic contract, performs hash calculation on a first preset field of the second electronic contract to obtain a first hash value, extracts a character string with a specified length from a specified position in the first hash value, and renames the second electronic contract based on the character string to obtain a third electronic contract.
7. The procurement contract management method of claim 6 characterized by: the anti-counterfeiting two-dimensional code is generated based on the timestamp, the contract validity period and the second hash value; and the second hash value is obtained by performing hash calculation on the timestamp, the contract validity period and a second preset field of the second electronic contract.
8. The procurement contract management method of claim 1 characterized by: the step S50 is specifically:
the intermediate service provider sets a storage address and creates a contract management table;
encrypting the third electronic contract by using a selected encryption algorithm, recording the contract monitoring information of the third electronic contract in a contract management table, wherein the contract monitoring information is stored in a storage address;
the contract monitoring information at least comprises contract creation time, contract validity period, contract state, contract creator and storage address; the contract status is enabled or disabled.
9. The procurement contract management method of claim 1 characterized by: the step S60 specifically includes:
and performing distributed storage on the third electronic contract and the contract management table based on a block chain technology to backup the third electronic contract and the contract management table.
10. The procurement contract management method of claim 1 characterized by: the step S70 is specifically:
and calling a third electronic contract based on the storage address of the contract management table, and automatically updating the contract state based on the contract creation time and the contract validity period of the contract management table so as to manage the third electronic contract.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210779523.5A CN115310894A (en) | 2022-07-04 | 2022-07-04 | Purchasing contract management method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210779523.5A CN115310894A (en) | 2022-07-04 | 2022-07-04 | Purchasing contract management method |
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| CN115310894A true CN115310894A (en) | 2022-11-08 |
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| CN202210779523.5A Pending CN115310894A (en) | 2022-07-04 | 2022-07-04 | Purchasing contract management method |
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