CN112988893B - Information management method, system, block chain node and medium based on block chain - Google Patents
Information management method, system, block chain node and medium based on block chain Download PDFInfo
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Abstract
The present disclosure provides a blockchain-based information management method, system, blockchain node, and computer-readable storage medium, the method comprising: after each time of receiving updated resident information in a first building, the first building node stores the updated resident information in a first storage area as a new first block; the first building node calculates information entropy of all first blocks in a first storage area of the first building node; the first building node judges whether the information entropy is larger than a preset threshold value or not; if the first building area node is larger than the preset threshold value, the first building area node packages all the first blocks into second blocks and broadcasts the second blocks to all second building area nodes in a block chain, so that the second blocks are respectively stored in second storage areas of the second building area nodes. The embodiment of the disclosure at least can solve the problems that the community information is directly synchronized, the updated information in the community is difficult to trace, and the like.
Description
Technical Field
The present disclosure relates to the field of communication technologies, and in particular, to a blockchain-based information management method, a blockchain-based information management system, a blockchain node, and a computer-readable storage medium.
Background
With the continuous development of economy, the demand of intelligent communities is gradually increased. How to realize the internet management of residents in the communities, realize the safe and controllable management of information, and establish intelligent novel communities to become the direction of community development. The block chain technology is widely applied, an effective solution is provided for intelligent community information management, the block chain technology is applied to intelligent community construction in the related technology, but the problem of synchronization of information in communities is mainly solved, and the problem that the updated information is difficult to trace back can be caused by the fact that the information in communities is updated rapidly and only by directly synchronizing the information in communities.
Therefore, it is needed to propose a traceable scheme that can effectively guarantee the security of the resident information and realize each resident information update.
Disclosure of Invention
The present disclosure provides a blockchain-based information management method, system, blockchain node, and computer-readable storage medium to address at least the above problems.
According to an aspect of an embodiment of the present disclosure, there is provided a blockchain-based information management method, in which a first building node and all second building nodes are respectively provided with a first storage area and a second storage area, the method including:
after each time of receiving updated resident information in a first building, the first building node stores the updated resident information in a first storage area as a new first block;
the first building node calculates information entropy of all first blocks in a first storage area of the first building node;
the first building node judges whether the information entropy is larger than a preset threshold value or not;
if the first building area node is larger than the preset threshold value, the first building area node packages all the first blocks into second blocks and broadcasts the second blocks to all second building area nodes in a block chain, so that the second blocks are respectively stored in second storage areas of the second building area nodes.
In one embodiment, the household information includes public information and private information, the private information being encrypted with a public key.
In one embodiment, after each time the first floor node receives updated household information of the first floor, and before storing the updated household information as a new first block in its first storage area, the method further comprises:
the first building node inquires a first block and contents of a resident where the updated resident information belongs when the resident is updated last time;
the first building node judges whether the updated resident information is legal or not based on a first block and content where the first building node is located when the first building node is updated last time;
if the resident update information is legal, the first building node is executed to store the resident update information as a new first block in a first storage area of the first building node.
In one embodiment, the method further comprises:
the first building node receives a third block sent by a total server, wherein the third block is generated by the total server based on initial resident information of all building; the method comprises the steps of,
the first floor node stores the third block in its second storage area.
In one embodiment, the method further comprises:
after receiving a fourth block broadcast to a blockchain by a certain second building node, the first building node stores the fourth block into a second storage area of the first building node;
and when the information entropy of all fifth blocks stored in the first storage area of the certain second building area node and generated based on the received updated resident information in the certain second building area is larger than a preset threshold value, packaging all fifth blocks into fourth blocks and broadcasting the fourth blocks into a block chain.
According to another aspect of the embodiments of the present disclosure, there is provided a blockchain-based information management system including a first floor node, and the first floor node and all second floor nodes are respectively provided with a first storage area and a second storage area, the first floor node including:
a storage module arranged to store updated household information in a first building as a new first block in a first storage area thereof after each time of receiving the updated household information;
a calculation module configured to calculate information entropy of all first blocks in a first storage area of the storage module;
the judging module is used for judging whether the information entropy is larger than a preset threshold value or not;
and the broadcasting module is used for packaging all the first blocks into second blocks and broadcasting the second blocks to all second building nodes in a block chain when the judging module judges that the information entropy is larger than a preset threshold value, so that the second blocks are respectively stored into second storage areas of the second building nodes by the second building nodes.
In one embodiment, the method further comprises:
the inquiry module is arranged to inquire the first block and the content of the resident where the updated resident information belongs when the resident is updated last time before the storage module stores the updated resident information as a new first block in the first storage area;
the judging module is further configured to judge whether the updated resident information is legal or not based on the first block and the content where the updated resident information is located at the last update;
the storage module is further configured to store the resident update information as a new first block in the first storage area thereof when the judging module judges that the resident update information is legal.
In one embodiment, the method further comprises:
a receiving module configured to receive a third block transmitted by a total server, wherein the third block is generated by the total server based on initial resident information of all the building areas; the method comprises the steps of,
the storage module is further configured to store the third block in its second storage area.
According to yet another aspect of embodiments of the present disclosure, there is provided a blockchain node including a memory and a processor, the memory having a computer program stored therein, the processor executing the blockchain-based information management method when the processor runs the computer program stored in the memory.
According to yet another aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the blockchain-based information management method.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:
according to the information management method based on the blockchain, after updated resident information in a first building is received each time through a first building node, the updated resident information is stored in a first storage area of the first building as a new first block; the first building node calculates information entropy of all first blocks in a first storage area of the first building node; the first building node judges whether the information entropy is larger than a preset threshold value or not; if the first building area node is larger than the preset threshold value, the first building area node packages all the first blocks into second blocks and broadcasts the second blocks to all second building area nodes in a block chain, so that the second blocks are respectively stored in second storage areas of the second building area nodes. The embodiment of the disclosure at least can solve the problems that the community information is directly synchronized, the updated information in the community is difficult to trace, and the like.
Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the disclosure. The objectives and other advantages of the disclosure will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosed embodiments and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain, without limitation, the disclosed embodiments.
FIG. 1 is a flow chart of a blockchain-based information management method according to an embodiment of the present disclosure;
FIG. 2 is a diagram of a third block data structure in an embodiment of the disclosure;
FIG. 3 is a data structure diagram of a first storage area of a first building node in an embodiment of the disclosure;
FIG. 4 is a data structure diagram of a second storage area of a second building node in an embodiment of the present disclosure;
FIG. 5 is a flowchart of a block chain based information management method according to another embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a block chain based information management system according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the following detailed description of the specific embodiments of the present disclosure will be given with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order; moreover, embodiments of the present disclosure and features of embodiments may be arbitrarily combined with each other without conflict.
In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present disclosure, and are not of specific significance per se. Thus, "module," "component," or "unit" may be used in combination.
To solve the above-described problems, the embodiments of the present disclosure utilize a blockchain technique to divide a community into a plurality of communities, each of which is provided with separate computing units and storage units as blockchain nodes, respectively, wherein the storage units include a first storage area and a second storage area. And when in initialization, the total server generates a second block to record initialization information of each resident, and distributes the second block to the second storage areas of all building storage units. The method comprises the steps that a resident updates information through a resident terminal and sends the information to a corresponding building node, the building node stores updated resident information as a first block in a first area, a building calculation unit calculates information entropy of all the first blocks in the first storage area of a current storage unit, when the information entropy is larger than a certain threshold value, the building is selected as a miner node, the content of the first storage area of the building is packed into a new second block and broadcasted to all the building, the second block broadcasted by the miner node is updated to the content of the second storage area by all the building, the problem that the security of intelligent community information management and the recording of resident information can be traced is solved, and further, by distinguishing public information and private information in resident information, the problem that the public information and the private information of a resident are timely collected by a property manager is solved, the whole process tracking of the information recording and updating process is realized, and the safety of the private information and the reliability of public information release are guaranteed.
Referring to fig. 1 to 4, fig. 1 is a flow chart of a blockchain-based information management method according to an embodiment of the present disclosure, where a first storage area and a second storage area are respectively provided for a first building node and all second building nodes, and the method includes steps S101 to S104 as shown in fig. 1.
In step S101, after each time updated household information in the first floor is received by the first floor node, the updated household information is stored as a new first block in the first storage area thereof.
For example, a first building node receives updated household information for a household and B household, a new first block of updated a household information, and updated B household information as the new first block.
In this embodiment, a building node is set in each building in the community, each building node and the total server form a blockchain network, each building node is set with a first storage area and a second storage area, where the first storage area is used to store the current updated household information sent by the resident in the present building to the building node, and the second storage area is used to store the updated household information newly synchronized in other building in the community.
Specifically, the user updates the resident information through the resident terminal and sends the resident information to the corresponding first building node, in one implementation mode, the resident information comprises resident public information and private information, the private information is encrypted by a public key, the public information can be shared to all resident terminals in the community for inquiry, and the private information only supports the inquiry of building management personnel or community management personnel. For private information, public key KM of building manager or public key K of community manager can be used for encryption, and building/community manager receives information and then decrypts by using private key PM/P.
In one embodiment, to avoid excessively large data for information synchronization, before each building performs update synchronization on information, the method first receives initialization information of the community, and further includes the following steps:
the first block link point receives a third block sent by a total server, wherein the third block is generated by the total server based on initial resident information of all building areas; the method comprises the steps of,
the first block link point stores the third block in its second storage area.
It will be appreciated that the overall server is responsible for information management, aggregation, distribution and other responsibilities in the blockchain, typically by community administrators, and upon network initialization, the overall server generates a second block from the initial resident information for each building and distributes it to all the building, and the first building, upon receiving the second block, stores the second block in the second area.
For the understanding of the present embodiment, please refer to fig. 2-4, wherein fig. 2 is a data structure of a third block, fig. 3 is a data structure of a first storage area in a first building, and fig. 4 is a data structure of a second storage area in a second building. In FIG. 3, each time a block updates content, an update block pointer is required to point to the last update block of the update content; recording the updating times of each resident in the updating block; in fig. 4, according to the content in the first storage area, the block position of the last updated content of the resident with the update times greater than 0 is found, and the pointer of the block position is pointed to the block of the last updated content of the resident in the second storage area, which can be understood, in fig. 4, the second storage area stores the third block of the content initial resident information distributed by the total server.
In step S102, the first building node calculates information entropy of all first blocks in its first storage area.
In step S103, the first building node determines whether the information entropy is greater than a preset threshold, if so, step S104 is executed, otherwise, the flow is ended.
In this embodiment, the information entropy of all the first blocks is calculated to measure the current information quantity in the first storage area, when the information entropy of all the first blocks is greater than a preset threshold, which indicates that the information quantity of the resident information updated in the first building area at this time meets the requirement of synchronous update, when the information entropy of the current block is greater than the threshold, the first building area is selected as a miner, the content in the first storage area of the building area is packed into the second blocks and broadcast to all the building areas, other second building area nodes acquire the updated content of the first building area from the block chain, so that the safe synchronization of the resident information is realized, the update frequency of the resident information is ensured to a certain extent, and the specific block can be traced to each updated information.
In step S104, the first building node packages the first blocks into second blocks and broadcasts the second blocks to all second building nodes in the blockchain, so that the second blocks are stored in the second storage areas of the second building nodes.
In one embodiment, the first building receives other building synchronized resident information from the block links, the method further comprising the steps of:
in step S401, after receiving a fourth block broadcast to the blockchain by a second building node, the first building node stores the fourth block in the second storage area;
and when the information entropy of all fifth blocks stored in the first storage area of the certain second building area node and generated based on the received updated household information in the certain second building area is larger than a preset threshold value, the fourth blocks are packed into fourth blocks and broadcasted into a block chain.
Referring to fig. 5, fig. 5 is a flowchart of a block chain-based information management method according to another embodiment of the present disclosure, in order to further improve the safety and reliability of the update of the resident information, after the first building node receives the resident information updated in the first building each time, and before storing the resident information updated in the first storage area as a new first block (step S101), the method further includes the following steps:
in step S501, the first building node queries a first block and contents of a resident to which the updated resident information belongs when the resident is updated last time; the method comprises the steps of,
in step S502, the first building node determines whether the updated resident information is legal based on the first block and the content where the previous update is located, and if so, step S101 is executed, where the first building node stores the resident update information as a new first block in the first storage area.
In practical applications, some households may have houses in multiple building areas, after uploading modified household information, mistakenly uploading the household information of the house in the building area to other building area nodes, in order to avoid similar problems, in this embodiment, by locating the block and the block content of the household when the household is updated last time, whether the updated household information of the household received in the first building area is legal or not is judged, if so, the updated household information is stored as a new block in the corresponding first storage area.
Based on the same technical concept, the embodiments of the present disclosure correspondingly further provide an information management system based on a blockchain, where the system includes a first building node, and the first building node and all second building nodes are respectively provided with a first storage area and a second storage area, as shown in fig. 6, where the first building node includes:
a storage module 61 arranged to store updated household information in the first floor area as a new first block in its first storage area after each receipt of said updated household information;
a calculation module 62 arranged to calculate the entropy of information of all the first blocks in its first storage area;
a judging module 63 configured to judge whether the information entropy is greater than a preset threshold;
and a broadcasting module 64 configured to package the first blocks into second blocks and broadcast the second blocks to all second building nodes in the blockchain when the judging module judges that the first blocks are greater than the preset threshold, so that the second blocks are stored in the second storage areas of the second building nodes.
In one embodiment, the household information includes public information and private information, the private information being encrypted with a public key.
In one embodiment, the system further comprises:
the inquiry module is arranged to inquire the block and the content of the resident where the updated resident information belongs when the resident is updated last time before the storage module stores the updated resident information as a new first block in the first storage area;
the judging module 63 is further configured to judge whether the most updated resident information is legal based on the block and the content where the last update was performed;
the storage module 61 is further configured to store the resident update information as a new first block in the first storage area thereof when the second determination module determines that it is legal.
In one embodiment, the system further comprises:
a receiving module configured to receive a third block transmitted by a total server, wherein the third block is generated by the total server based on initial resident information of all the building areas; the method comprises the steps of,
the storage module 61 is further arranged to store the third block in its second storage area.
In one embodiment, the storage module 61 is further configured to store the fourth block into the second storage area after receiving the fourth block broadcast to the blockchain by the second building node;
and when the information entropy of all fifth blocks stored in the first storage area of the certain second building area node and generated based on the received updated household information in the certain second building area is larger than a preset threshold value, the fourth blocks are packed into fourth blocks and broadcast into a block chain.
Based on the same technical concept, the embodiment of the present disclosure correspondingly provides a blockchain node, as shown in fig. 7, including a memory 71 and a processor 72, where the memory 71 stores a computer program, and when the processor 72 runs the computer program stored in the memory 71, the processor 72 executes the blockchain-based information management method.
Based on the same technical concept, the embodiments of the present disclosure accordingly provide a computer-readable storage medium having a computer program stored thereon, which when executed by a processor, performs the blockchain-based information management method.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, functional modules/units in the apparatus, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between the functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed cooperatively by several physical components. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present disclosure, and not for limiting the same; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present disclosure.
Claims (10)
1. The block chain-based information management method is characterized in that a first building node and all second building nodes are respectively provided with a first storage area and a second storage area, and the method comprises the following steps:
after each time of receiving updated resident information in a first building, the first building node stores the updated resident information in a first storage area as a new first block;
the first building node calculates information entropy of all first blocks in a first storage area of the first building node;
the first building node judges whether the information entropy is larger than a preset threshold value or not;
if the first building area node is larger than the preset threshold value, the first building area node packages all the first blocks into second blocks and broadcasts the second blocks to all second building area nodes in a block chain, so that the second blocks are respectively stored in second storage areas of the second building area nodes.
2. The method of claim 1, wherein the household information comprises public information and private information, the private information being encrypted with a public key.
3. The method of claim 1, wherein after each receipt of the first-floor updated household information by the first-floor node and before storing the updated household information as a new first block in its first storage area, further comprising:
the first building node inquires a first block and contents of a resident where the updated resident information belongs when the resident is updated last time;
the first building node judges whether the updated resident information is legal or not based on a first block and content where the first building node is located when the first building node is updated last time;
if the resident update information is legal, the first building node is executed to store the resident update information as a new first block in a first storage area of the first building node.
4. The method as recited in claim 1, further comprising:
the first building node receives a third block sent by a total server, wherein the third block is generated by the total server based on initial resident information of all building; the method comprises the steps of,
the first floor node stores the third block in its second storage area.
5. The method as recited in claim 1, further comprising:
after receiving a fourth block broadcast to a blockchain by a certain second building node, the first building node stores the fourth block into a second storage area of the first building node;
and when the information entropy of all fifth blocks stored in the first storage area of the certain second building area node and generated based on the received updated resident information in the certain second building area is larger than a preset threshold value, packaging all fifth blocks into fourth blocks and broadcasting the fourth blocks into a block chain.
6. An information management system based on a blockchain is characterized by comprising a first building node, wherein the first building node and all second building nodes are respectively provided with a first storage area and a second storage area, and the first building node comprises:
a storage module arranged to store updated household information in a first building as a new first block in a first storage area thereof after each time of receiving the updated household information;
a calculation module configured to calculate information entropy of all first blocks in a first storage area of the storage module;
the judging module is used for judging whether the information entropy is larger than a preset threshold value or not;
and the broadcasting module is used for packaging all the first blocks into second blocks and broadcasting the second blocks to all second building nodes in a block chain when the judging module judges that the information entropy is larger than a preset threshold value, so that the second blocks are respectively stored into second storage areas of the second building nodes by the second building nodes.
7. The system of claim 6, further comprising:
the inquiry module is arranged to inquire the first block and the content of the resident where the updated resident information belongs when the resident is updated last time before the storage module stores the updated resident information as a new first block in the first storage area;
the judging module is further configured to judge whether the updated resident information is legal or not based on the first block and the content where the updated resident information is located at the last update;
the storage module is further configured to store the resident update information as a new first block in the first storage area thereof when the judging module judges that the resident update information is legal.
8. The system of claim 6, further comprising:
a receiving module configured to receive a third block transmitted by a total server, wherein the third block is generated by the total server based on initial resident information of all the building areas; the method comprises the steps of,
the storage module is further configured to store the third block in its second storage area.
9. A blockchain node comprising a memory and a processor, the memory having a computer program stored therein, the processor performing the blockchain-based information management method of any of claims 1-5 when the processor runs the computer program stored in the memory.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, performs the blockchain-based information management method according to any of claims 1 to 5.
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