CN112685780A - Data encryption and decryption method based on block chain - Google Patents
Data encryption and decryption method based on block chain Download PDFInfo
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Abstract
The invention discloses a data encryption and decryption method based on a block chain, which comprises the steps of obtaining merchant data and a public and private key pair, wherein the public and private key pair comprises public key information and private key information; encrypting and uploading the merchant data according to a block chain technology and the public key information; the data is updated through one node, the data is displayed after the data is downloaded and decrypted off line at the client side, once the data decryption private key is detected to be abnormal, the data decryption and display process can be stopped immediately, at the moment, the interface can only display ciphertext data, and therefore the safety of data information is strictly guaranteed.
Description
Technical Field
The invention relates to the field of big data, in particular to a data encryption and decryption method based on a block chain.
Background
The block chain is a novel application mode of computer technologies such as distributed data storage, point-to-point transmission, a consensus mechanism, an encryption algorithm and the like, in the prior art, merchant information is stored in a platform, so that when the merchant downloads the merchant information and checks the merchant information offline, a problem of data leakage may exist, even if a data encryption package exists, the password platform still knows, a risk of data leakage also exists, namely, an offline data package file is not encrypted or is encrypted simply and symmetrically, data can be intercepted by a data sniffer or is easily cracked by a cracking tool in a network, and meanwhile, as the platform party keeps an encryption key, a risk of key loss also exists, once the offline data package and platform cloud data are lost together, the core data of the merchant is lost forever, and as the commercial data grows, the merchant needs to continuously perform data packing and downloading to obtain the latest data, based on the above drawbacks, a secure data storage method is needed.
Disclosure of Invention
The invention provides a data encryption and decryption method based on a block chain, and aims to solve the problems that in the prior art, a platform still stores original core data of a merchant, the merchant cannot conveniently and quickly inquire data off line, and privacy, safety and tamper resistance cannot be guaranteed in the data transmission and storage process.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention discloses a data encryption and decryption method based on a block chain, which comprises the following steps:
acquiring merchant data and a public and private key pair, wherein the public and private key pair comprises public key information and private key information;
encrypting and uploading the merchant data according to a block chain technology and the public key information;
and transmitting the encrypted merchant data to the client so that the client can decrypt according to the private key information.
The data of the invention is not stored in the platform side, but the platform of the merchant is encrypted and stored in the block chain, the platform side has a public key and a private key by using asymmetric encryption, the platform side stores the public key in the block chain after setting the public key, because the number of chain links of the block is large, the data can not be lost, the private storage private key is used for unlocking and storing the data in the local, and the data can be seen under the offline condition, thereby ensuring the safety.
Preferably, encrypting and uploading the merchant data according to a blockchain technique and the public key information includes:
encrypting the merchant data according to public key information;
storing the encrypted merchant data in a data cache region, and waiting for a data uploading request;
and responding to the data uploading request, and uploading the encrypted merchant data in a data cache region.
Preferably, the transmitting the encrypted merchant data from the blockchain network to the client, and decrypting the encrypted merchant data according to the private key information includes:
establishing N nodes at the client and establishing connection with the block chain network, wherein N is an integer greater than 1;
transmitting the merchant information to the client through at least one of the N nodes;
and respectively decrypting the merchant information transmitted from the N nodes according to the private key information, and displaying at a client.
Preferably, after the transmitting the merchant information to the client through at least one node of the N nodes, the method includes:
acquiring updated merchant data from the N nodes according to the data increment request;
and responding to the data increment request, and transmitting the merchant data to the client through at least one node in the N nodes.
A block chain-based data encryption and decryption apparatus, comprising:
an acquisition module: the system comprises a public key and a private key pair, a public key and a private key;
an encryption module: the system is used for encrypting and uploading the merchant data according to the block chain technology and the public key information acquired by the acquisition module;
a decryption module: and the encryption module is used for transmitting the merchant data encrypted by the encryption module to the client so as to facilitate the client to decrypt according to the private key information.
Preferably, the encryption module specifically includes:
a data encryption unit: the system is used for encrypting the merchant data according to public key information;
a data storage unit: the data encryption unit is used for encrypting the merchant data in the data cache region and transmitting the encrypted merchant data to the data cache region;
a data response unit: and the data processing module is used for responding to the data uploading request and uploading the encrypted merchant data in a data cache region.
Preferably, the decryption module specifically includes:
the establishing unit: the system comprises a server and a server, wherein the server is used for establishing N nodes at the client and establishing connection with the blockchain network, wherein N is an integer larger than 1;
a transmission unit: the business information is transmitted to the client through at least one node in the N nodes established by the establishing unit;
a data decryption unit: and the server is used for respectively decrypting the merchant information transmitted from the N nodes according to the private key information and displaying the merchant information at a client.
Preferably, the decryption module further includes:
an update unit: the data increment request is used for acquiring updated merchant data from the N nodes;
a response unit: and the data increment request is used for responding to the data increment request and transmitting the merchant data to the client through at least one node in the N nodes.
An electronic device comprising a memory and a processor, the memory for storing one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement a blockchain based data encryption and decryption method as claimed in any one of the above.
A computer-readable storage medium storing a computer program which, when executed by a computer, implements a blockchain-based data encryption and decryption method as in any one of the above.
The invention has the following beneficial effects:
1. each merchant has an independent block chain server node and keeps data for decryption; 2. encrypting and chaining the core data of the merchant, and quickly synchronizing the core data to a local client of the merchant after the node is electrified and networked; 3. the on-chain data is stored locally at the merchant off-line, and the decrypted on-chain data can be viewed through a local browser using a private key.
Drawings
Fig. 1 is a first flowchart of a method for encrypting and decrypting data based on a block chain according to an embodiment of the present invention;
FIG. 2 is a second flowchart of a method for encrypting and decrypting data based on block chains according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating an embodiment of a block chain-based data encryption and decryption method according to the present invention;
FIG. 4 is a schematic diagram of an apparatus for encrypting and decrypting data based on a block chain according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an encryption module for implementing a block chain-based data encryption and decryption apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a decryption module of an apparatus for encrypting and decrypting data based on a blockchain according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating an embodiment of an apparatus for encrypting and decrypting data based on a blockchain according to the present invention;
fig. 8 is a schematic diagram of an electronic device implementing a block chain-based data encryption and decryption apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
The terms "first," "second," and the like in the claims and in the description of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order, it being understood that the terms so used are interchangeable under appropriate circumstances and are merely used to describe a distinguishing manner between similar elements in the embodiments of the present application and that the terms "comprising" and "having" and any variations thereof are intended to cover a non-exclusive inclusion such that a process, method, system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs, and the terms used herein in the specification of the present application are for the purpose of describing particular embodiments only and are not intended to limit the present application.
Example 1
As shown in fig. 1, a block chain-based data encryption and decryption method includes the following steps:
s110, acquiring merchant data and a public and private key pair, wherein the public and private key pair comprises public key information and private key information;
s120, encrypting and uploading the merchant data according to a block chain technology and the public key information;
s130, after the encrypted merchant data is transmitted to the client, the client can conveniently decrypt according to the private key information.
In embodiment 1, the merchant data of the present invention includes merchant registration information and merchant platform transaction information, and the merchant data is not stored in the platform side, but is stored in the block chain in the merchant platform encryption manner, and by using asymmetric encryption, the platform side has a public key, and we have a private key, and the platform side stores the public key in the block chain after setting the public key.
Example 2
As shown in fig. 2, a block chain-based data encryption and decryption method includes:
s210, acquiring merchant data and a public and private key pair, wherein the public and private key pair comprises public key information and private key information;
s220, encrypting and uploading the merchant data according to a block chain technology and the public key information;
s230, establishing N nodes at the client and establishing connection with the blockchain network, wherein N is an integer greater than 1;
s240, acquiring updated merchant data from the N nodes according to the data increment request;
s250, transmitting the merchant information to the client through at least one node in the N nodes;
s260, the merchant information transmitted from the N nodes is respectively decrypted according to the private key information and displayed at a client.
As can be seen from embodiment 2, a merchant automatically generates a public and private key pair based on asymmetric encryption in a local environment by using a local data client, and uploads public key information to a platform, the private key information is stored in a merchant local encryption usb disk, the platform does not store original core data, and the core data is encrypted by the public key and stored in a data buffer area to wait for subsequent uploading to a block chain. The data in the data buffer area can be automatically uploaded to a block chain network, and the safety of the data is ensured through a block chain distributed storage technology. A merchant builds a node of a block chain in a local environment and accesses a block chain network, the node automatically synchronizes newly-added transaction data in the network to the local in a non-offline state, and the local data is still readable after offline. The method comprises the steps that a merchant builds a local data client, a data decryption private key is led in through modes such as an encryption U disk and the like, the client can decrypt local encrypted data of a block chain node in an off-line state, the data are combined and processed after decryption is completed, and finally display is carried out in a visual mode. The local data client can work in a completely off-line environment, once the data decryption private key abnormity (the conditions of encrypted USB disk quitting and the like) is detected, the data decryption and display process can be immediately stopped, at the moment, the interface can only display ciphertext data, the data are stored in nodes, the data are not easy to leak, and the real-time performance of data updating is guaranteed.
Example 3
As shown in fig. 3, one specific embodiment may be:
s310, acquiring merchant data and a public and private key pair, wherein the public and private key pair comprises public key information and private key information. The platform stores the public key, the server stores the merchant data in the block chain link points in an encrypted manner through the public key information, and the merchant stores the private key information.
S320, encrypting and uploading the merchant data according to a block chain technology and the public key information;
the method comprises the steps that a merchant builds a node of a block chain in a local environment and accesses a block chain network, merchant data are encrypted by a labor key and then stored in the block chain network in a node-by-node mode, meanwhile, the public key is uploaded to a platform, and the uploaded merchant data are updated in real time.
S330, after the encrypted merchant data is transmitted to the client from the block chain network, the encrypted merchant data is decrypted according to the private key information.
And the private key information is stored in the local client, when public key information is received, the offline data is downloaded from the block chain network, the offline data is decrypted by the private key information, the data is merged and processed after the decryption is finished, and finally the data is displayed in a visual mode.
Example 4
As shown in fig. 4, a block chain-based data encryption and decryption apparatus includes:
the acquisition module 10: the system comprises a public key and a private key pair, a public key and a private key;
the encryption module 20: the system is used for encrypting and uploading the merchant data to a block chain network according to the public key information acquired by the acquisition module 10;
the decryption module 30: and is configured to decrypt the merchant data encrypted by the encryption module 20 according to the private key information after transmitting the merchant data from the block chain to the client.
One embodiment of the above apparatus may be: the acquiring module 10 acquires merchant data and a public and private key pair, the public and private key pair comprises public key information and private key information, the encrypting module 20 encrypts and uploads the merchant data to a blockchain network according to the public key information acquired by the acquiring module 10, and the decrypting module 30 decrypts the merchant data encrypted by the encrypting module 20 according to the private key information after transmitting the merchant data from the blockchain network to the client.
Example 5
As shown in fig. 5, an encryption module 20 of a block chain-based data encryption and decryption apparatus includes:
the data encryption unit 22: the system is used for encrypting the merchant data according to public key information;
data storage unit 24: the data encryption unit is used for encrypting the merchant data in the data cache region and transmitting the encrypted merchant data to the data cache region;
the data response unit 26: and the data processing module is used for responding to the data uploading request and uploading the encrypted merchant data in a data cache region.
One embodiment of the encryption module 20 of the above apparatus may be: the data encryption unit 22 encrypts the merchant data according to the public key information, the data storage unit 24 stores the merchant data encrypted by the data encryption unit 22 in a data cache region and waits for a data uploading request, and the data response unit 26 responds to the data uploading request and uploads the encrypted merchant data to the blockchain network in the data cache region.
Example 6
As shown in fig. 6, a decryption module 30 of a block chain-based data encryption and decryption apparatus includes:
the establishing unit 32: the system comprises a server and a server, wherein the server is used for establishing N nodes at the client and establishing connection with the blockchain network, wherein N is an integer larger than 1;
the transmission unit 34: at least one of the N nodes for transmitting the merchant information to the client via the establishing unit established 32;
data decryption unit 36: and the server is used for respectively decrypting the merchant information transmitted from the N nodes according to the private key information and displaying the merchant information at a client.
One embodiment of the decryption module 30 of the above apparatus may be: the establishing unit 32 establishes N nodes at the client and establishes connection with the blockchain network, where N is an integer greater than 1, the transmitting unit 34 transmits the merchant information to the client through at least one node of the N nodes established by the establishing unit 32, and the data decrypting unit 36 decrypts the merchant information transmitted from the N nodes according to the private key information, and displays the merchant information at the client.
Example 7
As shown in fig. 7, one specific implementation may be:
and S710, acquiring merchant data and a public and private key pair, wherein the public and private key pair comprises public key information and private key information. The platform stores the public key, the server stores the merchant data in the block chain link points in an encrypted manner through the public key information, and the merchant stores the private key information.
S720, encrypting the merchant data according to a block chain technology and the public key information and uploading the merchant data to a block chain network;
the method comprises the steps that a merchant builds a node of a block chain in a local environment and accesses a block chain network, merchant data are encrypted by a labor key and then stored in the block chain network in a node-by-node mode, meanwhile, the public key is uploaded to a platform, and the uploaded merchant data are updated in real time.
And S730, after the encrypted merchant data is transmitted to the client from the block chain network, decrypting the merchant data according to the private key information.
And the private key information is stored in the local client, when public key information is received, the offline data is downloaded from the block chain network, the offline data is decrypted by the private key information, the data is merged and processed after the decryption is finished, and finally the data is displayed in a visual mode.
Example 8
As shown in fig. 8, an electronic device comprises a memory 801 and a processor 802, wherein the memory 801 is used for storing one or more computer instructions, and the one or more computer instructions are executed by the processor 802 to implement a method for obtaining a knowledge graph based on deep learning as described above.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the electronic device described above may refer to the corresponding process in the foregoing method embodiment, and is not described herein again.
A computer-readable storage medium storing a computer program which, when executed by a computer, implements a method for obtaining a knowledge-graph based on deep learning as described above.
Illustratively, a computer program may be divided into one or more modules/units, one or more modules/units are stored in the memory 801 and executed by the processor 802, and the I/O interface transmission of data is performed by the input interface 805 and the output interface 806 to complete the present invention, and one or more modules/units may be a series of computer program instruction segments describing the execution of the computer program in a computer device capable of performing specific functions.
The computer device may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The computer device may include, but is not limited to, the memory 801 and the processor 802, and those skilled in the art will appreciate that the present embodiment is only an example of the computer device and is not limited to the computer device, and may include more or less components, or combine certain components, or different components, for example, the computer device may further include the input device 807, a network access device, a bus, etc.
The processor 802 may be a Central Processing Unit (CPU), other general-purpose processor 802, a digital signal processor 802 (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general purpose processor 802 may be a microprocessor 802 or the processor 802 may be any conventional processor 802 or the like.
The storage 801 may be an internal storage unit of the computer device, such as a hard disk or a memory of the computer device. The memory 801 may also be an external storage device of the computer device, such as a plug-in hard disk, a Smart Memory Card (SMC), a Secure Digital (SD) card, a flash memory card (FlashCard), etc. provided on the computer device, further, the memory 801 may also include both an internal storage unit and an external storage device of the computer device, the memory 801 is used for storing computer programs and other programs and data required by the computer device, the memory 801 may also be used for temporarily storing in the output 808, and the aforementioned storage media include various media capable of storing program codes, such as a usb disk, a removable hard disk, a ROM803, a RAM804, a disk, or an optical disk.
The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (10)
1. A data encryption and decryption method based on a block chain is characterized by comprising the following steps:
acquiring merchant data and a public and private key pair, wherein the public and private key pair comprises public key information and private key information;
encrypting and uploading the merchant data according to a block chain technology and the public key information;
and transmitting the encrypted merchant data to the client so that the client can decrypt according to the private key information.
2. The blockchain-based data encryption and decryption method of claim 1, wherein encrypting and uploading the merchant data according to a blockchain technique and the public key information comprises:
encrypting the merchant data according to public key information;
storing the encrypted merchant data in a data cache region, and waiting for a data uploading request;
and responding to the data uploading request, and uploading the encrypted merchant data in a data cache region.
3. The method according to claim 1, wherein after the encrypted merchant data is transmitted to the client, the client decrypts the data according to the private key information, the method comprises:
establishing N nodes at the client and establishing connection with the block chain, wherein N is an integer greater than 1;
transmitting the merchant information to the client through at least one of the N nodes;
and respectively decrypting the merchant information transmitted from the N nodes according to the private key information, and displaying at a client.
4. The method according to claim 3, wherein after transmitting the merchant information to the client via at least one of the N nodes, the method comprises:
acquiring updated merchant data from the N nodes according to the data increment request;
and responding to the data increment request, and transmitting the merchant data to the client through at least one node in the N nodes.
5. A block chain-based data encryption and decryption apparatus, comprising:
an acquisition module: the system comprises a public key and a private key pair, a public key and a private key;
an encryption module: the system is used for encrypting and uploading the merchant data according to the block chain technology and the public key information acquired by the acquisition module;
a decryption module: and the encryption module is used for transmitting the merchant data encrypted by the encryption module to the client so as to facilitate the client to decrypt according to the private key information.
6. The device according to claim 5, wherein the encryption module specifically comprises:
a data encryption unit: the system is used for encrypting the merchant data according to public key information;
a data storage unit: the data encryption unit is used for encrypting the merchant data in the data cache region and transmitting the encrypted merchant data to the data cache region;
a data response unit: and the data processing module is used for responding to the data uploading request and uploading the encrypted merchant data in a data cache region.
7. The device according to claim 5, wherein the decryption module specifically comprises:
the establishing unit: the system comprises a server and a server, wherein the server is used for establishing N nodes at the client and establishing connection with the blockchain network, wherein N is an integer larger than 1;
a transmission unit: the business information is transmitted to the client through at least one node in the N nodes established by the establishing unit;
a data decryption unit: and the server is used for respectively decrypting the merchant information transmitted from the N nodes according to the private key information and displaying the merchant information at a client.
8. The device according to claim 7, wherein the decryption further comprises:
an update unit: the data increment request is used for acquiring updated merchant data from the N nodes;
a response unit: and the data increment request is used for responding to the data increment request and transmitting the merchant data to the client through at least one node in the N nodes.
9. An electronic device comprising a memory and a processor, the memory configured to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement a method for blockchain based data encryption and decryption as claimed in any one of claims 1 to 4.
10. A computer-readable storage medium storing a computer program, wherein the computer program is configured to enable a computer to execute a method for encryption and decryption of data based on a blockchain according to any one of claims 1 to 4.
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| CN202011642011.1A CN112685780A (en) | 2020-12-31 | 2020-12-31 | Data encryption and decryption method based on block chain |
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