CN115208665B - Germplasm resource data safe sharing method and system based on blockchain - Google Patents
Germplasm resource data safe sharing method and system based on blockchain Download PDFInfo
- Publication number
- CN115208665B CN115208665B CN202210829404.6A CN202210829404A CN115208665B CN 115208665 B CN115208665 B CN 115208665B CN 202210829404 A CN202210829404 A CN 202210829404A CN 115208665 B CN115208665 B CN 115208665B
- Authority
- CN
- China
- Prior art keywords
- data
- detailed information
- germplasm resource
- resource data
- user
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0442—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The application relates to the technical field of agricultural big data safe sharing, and provides a germplasm resource data safe sharing method and system based on a block chain, wherein the method comprises the following steps: respectively carrying out asymmetric encryption processing on detailed information of germplasm resource data and detailed information of user data to obtain ciphertext, and storing the ciphertext of the germplasm resource data and the ciphertext of the user data into an interstellar file system IPFS; and receiving a hash value corresponding to the germplasm resource data returned by the IPFS; and sending the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the germplasm resource data and the hash value corresponding to the user data to the block chain so as to realize safe sharing of the germplasm resource data. Thus, based on the Ethernet technology, an IPFS+blockchain link up-link and down-link collaborative storage model is provided for user identity data and germplasm resource data, so that efficient and safe sharing of the germplasm resource data is realized.
Description
Technical Field
The application relates to the technical field of agricultural big data safe sharing, in particular to a germplasm resource data safe sharing method and system based on a block chain.
Background
The research work of China aiming at the agricultural crop germplasm resources is developed for seventy years, a systematic germplasm resource management workflow is formed, however, the traditional data management of the agricultural crop germplasm resources mostly adopts a centralized sharing mode, and the problems of data leakage, easy falsification and the like exist.
With the rapid development of the blockchain technology, research on the application of the blockchain technology in the agricultural field also has a certain result, and in the related technology, the sharing efficiency of germplasm resource data is greatly influenced by excessive redundant data due to relatively complicated germplasm resource data and large volume, and weaker storage capacity on the blockchain.
Accordingly, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The present application is directed to a method and a system for securely sharing germplasm resource data based on blockchain, so as to solve or alleviate the problems in the prior art.
In order to achieve the above object, the present application provides the following technical solutions:
the application provides a germplasm resource data safe sharing method based on a blockchain, which comprises the following steps:
respectively carrying out asymmetric encryption processing on detailed information of germplasm resource data and detailed information of user data, and correspondingly obtaining ciphertext of the detailed information of the germplasm resource data and ciphertext of the detailed information of the user data; wherein, the germplasm resource data is provided by a data provider and shared to a data user;
Storing ciphertext of detailed information of the germplasm resource data and ciphertext of detailed information of the user data into an interstellar file system (IPFS), and receiving a hash value corresponding to the detailed information of the germplasm resource data and a hash value corresponding to the detailed information of the user data returned by the IPFS;
and sending the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data and the hash value corresponding to the detailed information of the user data to a blockchain so as to realize safe sharing of the germplasm resource data.
Preferably, the asymmetric encryption processing is performed on the detailed information of the germplasm resource data and the detailed information of the user data respectively, and the ciphertext corresponding to the detailed information of the germplasm resource data and the ciphertext corresponding to the detailed information of the user data are specifically:
generating an asymmetric key pair through an RSA algorithm in an asymmetric encryption method;
and respectively carrying out encryption processing on the detailed information of the germplasm resource data and the detailed information of the user data based on the asymmetric key pair, and correspondingly obtaining the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data.
Preferably, the encrypting process is performed on the detailed information of the germplasm resource data and the detailed information of the user data based on the asymmetric key pair, so as to obtain the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data correspondingly, specifically:
and when the data provider shares the detailed information of the germplasm resource data, the detailed information of the germplasm resource data and the detailed information of the user data are respectively encrypted by adopting the private key in the asymmetric key pair, and the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data are correspondingly obtained.
Preferably, the encrypting process is performed on the detailed information of the germplasm resource data and the detailed information of the user data based on the asymmetric key pair, so as to obtain the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data correspondingly, specifically:
and when the data provider performs authorized interaction with the data user, the public key in the asymmetric key pair is adopted to encrypt the detailed information of the germplasm resource data and the detailed information of the user data respectively, so as to obtain ciphertext of the detailed information of the germplasm resource data and ciphertext of the detailed information of the user data correspondingly.
Preferably, the storing the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data in an interstellar file system IPFS specifically includes:
and calling an interface API provided by the IPFS, respectively converting the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data into a cache byte stream, and sending the cache byte stream to the IPFS.
Preferably, the sending the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data, and the hash value corresponding to the detailed information of the user data to the blockchain, so as to realize safe sharing of the germplasm resource data, specifically includes:
and storing the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data and the hash value corresponding to the detailed information of the user data into an intelligent contract of the blockchain so as to realize safe sharing of the germplasm resource data based on the intelligent contract.
Preferably, the secure sharing of the germplasm resource data is realized based on the intelligent contract, specifically:
Acquiring a hash value corresponding to the detailed information of the germplasm resource data by retrieving the intelligent contract;
acquiring ciphertext of detailed information of the germplasm resource data through an API interface provided by the IPFS according to a hash value corresponding to the detailed information of the germplasm resource data;
and decrypting the ciphertext of the detailed information of the germplasm resource data based on a crypto-js encryption algorithm library to obtain the germplasm resource data.
Preferably, the method further comprises:
storing a user name and an account address in the user data in the blockchain;
and verifying the identity of the user based on the pre-constructed mapping relation between the user name and the account address.
The embodiment of the application provides a germplasm resource data safe sharing system based on a blockchain, which comprises the following components:
an encryption unit configured to perform asymmetric encryption processing on detailed information of germplasm resource data and detailed information of user data respectively, and correspondingly obtain ciphertext of the detailed information of germplasm resource data and ciphertext of the detailed information of user data; wherein, the germplasm resource data is provided by a data provider and shared to a data user;
The storage unit is configured to store ciphertext of detailed information of the germplasm resource data and ciphertext of detailed information of the user data to an interstellar file system (IPFS), and receive a hash value corresponding to the detailed information of the germplasm resource data returned by the IPFS and a hash value corresponding to the detailed information of the user data;
and the sharing unit is configured to send the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data and the hash value corresponding to the detailed information of the user data to a blockchain so as to realize safe sharing of the germplasm resource data.
The beneficial effects are that:
in the application, the germplasm resource data and the user privacy data are subjected to asymmetric encryption processing respectively to correspondingly obtain an encryption file of the germplasm resource data and an encryption file of the user privacy data; sending the encrypted file of the germplasm resource data and the encrypted file of the user privacy data to an interstellar file system (IPFS), and receiving a hash value corresponding to the germplasm resource data and a hash value corresponding to the user privacy data returned by the IPFS; and sending the hash value corresponding to the germplasm resource data and the hash value corresponding to the user privacy data to the block chain network. Therefore, the link-up and link-down collaborative storage model combining the IPFS and the blockchain network is adopted, the safety of the germplasm resource data and the user privacy data is ensured based on an asymmetric encryption technology, and the germplasm resource data is efficiently and safely shared through an interaction mode of intelligent contracts.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. Wherein:
FIG. 1 is a schematic diagram of a storage model of a blockchain-based germplasm resource data secure sharing method provided in accordance with some embodiments of the present application;
FIG. 2 is a flow chart of a method for securely sharing blockchain-based germplasm resource data provided in accordance with some embodiments of the present application;
FIG. 3 is a schematic diagram of an encryption/decryption flow provided in accordance with some embodiments of the present application;
FIG. 4 is a schematic diagram of interaction patterns of a blockchain-based germplasm resource data secure sharing method provided in accordance with some embodiments of the present application;
FIG. 5 is a schematic diagram of a system for securely sharing germplasm resource data based on a blockchain according to some embodiments of the present application;
fig. 6 is a second schematic structural diagram of a blockchain-based germplasm resource data secure sharing system according to some embodiments of the present application.
Detailed Description
The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Various examples are provided by way of explanation of the present application and not limitation of the present application. Indeed, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still a further embodiment. Accordingly, it is intended that the present application include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
In the related art, research work on agricultural crop germplasm resources has been developed for many years, and a systematic germplasm resource management workflow is formed. In recent years, research on blockchain technology in the agricultural field has also progressed. Some scholars have proposed a blockchain-based solution for the data management work of farm crop germplasm resources, and studied a blockchain-based germplasm resource data management scheme, a storage scheme, a consensus scheme and an encryption scheme. Other scholars have proposed a 4-layer hierarchical architecture for applying blockchain technology in seed big data, analyzing incentive mechanisms, smart contracts, and key mechanisms for applying blockchain technology in seed big data. Some researches are based on the basic characteristics of the blockchain technology, and the problems of difficult supervision, counterfeit varieties and the like in the seed industry market are solved by utilizing the blockchain technology to ensure the authenticity of seed sources and realizing the traceability of seed research and development production links in the research and development production process of agricultural crop species. Therefore, with the rapid development of the blockchain technology, the characteristics of transparency, safety, reliability, traceability and decentralization are disclosed, and a new research direction is provided for germplasm resource data sharing and management work.
However, in the above technical solution, the germplasm resource data of huge and complex crops are all stored in the blockchain, and as all data of the blockchain are backed up by each node, the redundant data quantity on the chain can reduce the consensus efficiency, and additionally increase the storage and calculation cost of each node.
Therefore, the application provides a germplasm resource data safe sharing method based on a blockchain, which adopts an Ethernet framework to design a germplasm resource data safe sharing system model based on the blockchain, proposes an on-chain and off-chain collaborative storage model of IPFS+blockchain aiming at user identity data and germplasm resource data, ensures germplasm resource data safety and user identity data privacy by using an asymmetric encryption technology, gives out a collaborative storage model design result in an intelligent contract interaction mode, and shows the rationality of the model.
Exemplary method
An embodiment of the present application provides a safe sharing method of germplasm resource data based on a blockchain, and fig. 1 is a schematic diagram of a storage model of the safe sharing method of germplasm resource data based on a blockchain according to some embodiments of the present application; FIG. 2 is a flow chart of a method for securely sharing blockchain-based germplasm resource data provided in accordance with some embodiments of the present application; FIG. 3 is a schematic diagram of an encryption/decryption flow provided in accordance with some embodiments of the present application; fig. 4 is a schematic diagram of interaction modes of a blockchain-based germplasm resource data secure sharing method according to some embodiments of the present application. As shown in fig. 1, 2, 3 and 4, the method includes:
And step S101, respectively carrying out asymmetric encryption processing on detailed information of the germplasm resource data and detailed information of the user data, and correspondingly obtaining ciphertext of the detailed information of the germplasm resource data and ciphertext of the detailed information of the user data.
In the embodiment of the application, the germplasm resource data sharing model based on the blockchain mainly solves the problems of data storage and safety. Because the germplasm resource data is relatively complicated and large in volume, but the storage capacity on the blockchain is weak, and the sharing efficiency of the blockchain is easily influenced by excessive redundant data, based on the fact, the germplasm resource data storage model based on the combination of blockchain and under-chain storage is provided.
Here, storing the shared germplasm information data onto the blockchain according to the blockchain data structure is the basis for achieving the safe sharing of germplasm resource data by using the blockchain technology. The safe sharing of the agro-farming germplasm resource data is realized based on the blockchain technology, and the shared data is divided into germplasm resource data and user data.
Germplasm resource data, also called genetic resources, refers to genetic material transmitted from a parent organism to a progeny organism, which often exists in specific varieties, such as ancient local varieties, newly cultivated generalized varieties, important genetic material and wild related plants, and belongs to the range of germplasm resources.
Wherein, the germplasm resource data is provided by a data provider and shared to a data user.
It should be noted that, the blockchain is an innovative combined application mode of a series of network technologies such as distributed storage in the internet era, point-to-point data transmission, consensus mechanism, encryption mechanism, and the like. A blockchain consists of a collection of several blocks of data, with the blocks being related to each other by hash values to form a chain. The blockchain technology enables any two parties with consensus to directly trade based on the attribute of cryptography, does not need intervention of a trusted third party, records all the trade on a chain, has the advantages of disclosure transparency, non-tampering, traceability and the like, and effectively improves the security of the trade, thereby not only ensuring the security of the trade of the Internet, but also enabling the Internet trade to be carried out without depending on a trusted third party trading mechanism.
Wherein blocks in a blockchain are related to each other through hash values to form a chain. Here, the hash value is generated by a hash function. The hash function is a function that causes an input character string of an arbitrary length to be changed to a hash value of a fixed length. It has the following characteristics:
(1) Crash resistance: the first data is denoted by x, and the second data y is not present, so that the hash value of x is equal to the hash value of y, i.e., H (x) =h (y) cannot be made, that is, the hash value generated by the hash function cannot be tampered with and cannot be detected by collision.
(2) Irreversibility: the operation of the hash function has unidirectionality, and when the corresponding hash value H (x) is obtained through the first data x, the H (x) cannot reversely push to obtain x, namely the hash value cannot push to obtain the original data.
Specifically, in the embodiments of the present application, the Merkle tree algorithm (also known as Merkle tree) is used to generate and manage hash values in the blockchain. Wherein, merkle tree is a binary tree consisting of a root node, a group of intermediate nodes and leaf nodes. The Merkle tree algorithm does not directly calculate all hash values, but calculates hash values through each transaction in the blockchain, respectively, and uses the hash values as leaf nodes of the Merkle tree, then calculates new hash values by connecting every two hash values, obtains the middle node of the last layer of the hash values by connecting every two hash values, and so on until the root of the Merkle tree is calculated, thereby forming the Merkle tree.
Because the germplasm resource data is relatively complicated and large in volume, and the storage capacity on the blockchain is weak, the sharing efficiency of the blockchain is easily affected by excessive redundant data. In view of this, in the embodiment of the present application, detailed information of the complicated and huge germplasm resource data and detailed information of the user data are not directly stored in the blockchain, but are encrypted by asymmetric encryption processing, and ciphertext of the detailed information of the germplasm resource data and ciphertext of the detailed information of the user data are obtained in correspondence, and then stored under the chain. Thus, the germplasm resource data and the user data are encrypted before being stored in the network, and the safety of the germplasm resource data and the user data is fully ensured.
In some embodiments, the performing asymmetric encryption processing on the detailed information of the germplasm resource data and the detailed information of the user data respectively corresponds to obtaining a ciphertext of the detailed information of the germplasm resource data and a ciphertext of the detailed information of the user data, which specifically are: generating an asymmetric key pair through an RSA algorithm in an asymmetric encryption method; and respectively carrying out encryption processing on the detailed information of the germplasm resource data and the detailed information of the user data based on the asymmetric key pair, and correspondingly obtaining the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data.
In the asymmetric encryption system, the data provider and the data user use different keys, namely an asymmetric key pair, and the encryption/decryption process of the detailed information of the germplasm resource data and the detailed information of the user data is realized through the public key and the private key of the asymmetric key pair, if the public key is encrypted, the private key is required to be decrypted, and if the private key is encrypted, the public key is required to be decrypted.
In the embodiment of the application, user nodes participating in germplasm resource data sharing interact through public and private keys generated by an RSA encryption algorithm in a blockchain asymmetric encryption technology, the public keys are used as public addresses, and the private keys are stored by all parties.
In practical application, an RSA encryption algorithm in an asymmetric algorithm is adopted to realize encryption/decryption of detailed information of germplasm resource data and detailed information of user data. The security degree of the RSA encryption algorithm is positively related to the lengths of the large prime numbers p and q, and the longer the length is, the higher the security of the encrypted data is.
In the process of realizing the agricultural crop germplasm resource data safe sharing model based on the blockchain, information encryption technology is needed in the process of uploading germplasm resource data by a data provider and providing protection for privacy data in user data. The germplasm resource data sharing is a shared data management model participated by a plurality of data providers, the accurate and reliable source of data in the uploading and sharing process of germplasm resource data information providers can be ensured through an asymmetric encryption technology, the data encryption, tamper resistance and controllability on a germplasm resource data sharing chain can be realized, the germplasm resource sharing data can be better spread among all network nodes of a blockchain, and the privacy information of all network nodes is ensured while the germplasm resource data is shared. In the embodiment of the application, the RSA algorithm in the asymmetric encryption method is adopted to generate the asymmetric key pair, and the ciphertext of the detailed information of the germplasm resource data and the detailed information of the user data are encrypted, so that the safety and reliability of the data transaction process can be ensured.
In some embodiments, after generating an asymmetric key pair by an RSA algorithm in an asymmetric encryption method, encryption processing is performed on detailed information of the germplasm resource data and detailed information of user data based on the asymmetric key pair, and ciphertext of the detailed information of the germplasm resource data and ciphertext of the detailed information of the user data are obtained correspondingly, which specifically are: and when the data provider shares the detailed information of the germplasm resource data, the detailed information of the germplasm resource data and the detailed information of the user data are respectively encrypted by adopting the private key in the asymmetric key pair, and the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data are correspondingly obtained.
In particular, when the data provider provides the germplasm resource data for the data user, the authenticity of the shared germplasm resource data needs to be ensured, and at this time, the detail information of the germplasm resource data and the detail information of the user data are respectively encrypted by adopting the key pair of the asymmetric key pair. Furthermore, in the process of publishing the germplasm resource data, the private key is adopted to encrypt information such as data description, access mode and the like in the germplasm resource data, so that the data copyright is ensured in a transaction mode.
In other embodiments, the encrypting the detailed information of the germplasm resource data and the detailed information of the user data based on the asymmetric key pair corresponds to obtaining a ciphertext of the detailed information of the germplasm resource data and a ciphertext of the detailed information of the user data, specifically: and when the data provider performs authorized interaction with the data user, the public key in the asymmetric key pair is adopted to encrypt the detailed information of the germplasm resource data and the detailed information of the user data respectively, so as to obtain ciphertext of the detailed information of the germplasm resource data and ciphertext of the detailed information of the user data correspondingly.
In practical application, when authorization interaction is performed between the data provider and the data user, the detailed information of the germplasm resource data and the detailed information of the user data are encrypted by adopting a public key, so that the safety of the data transmission process is ensured.
Here, the data provider and the data user need to perform authorization interaction, which means that when the data provider uploads data, the data provider encrypts detailed information of germplasm resource data by using a public key to obtain a corresponding ciphertext. In order to acquire the shared germplasm resource data, the data user makes an authorization request to the data provider, and after confirming that the data user belongs to an interaction process of a private key required by ciphertext corresponding to detailed information of the germplasm resource data, the data user provides the ciphertext corresponding to the detail information of the germplasm resource data.
In this way, the detailed information of the germplasm resource data is encrypted by adopting the private key, so that the authenticity of the shared detailed information of the germplasm resource data is ensured; and the detailed information of the germplasm resource data is encrypted by adopting a public key, so that the reliability of authorized interaction between a data provider and a data user is ensured.
Step S102, storing the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data in an interstellar file system IPFS, and receiving a hash value corresponding to the detailed information of the germplasm resource data and a hash value corresponding to the detailed information of the user data returned by the IPFS.
It should be noted that, the interstellar file system IPFS (InterPlanetary File System) is a content-addressable, point-to-point distributed storage and transmission protocol. In IPFS, the data file is divided into fixed-size blocks, stored in distributed nodes in a distributed manner, and the file generates a unique Hash value as an addressing address, and has a disaster-tolerant backup mechanism. The data stored into the IPFS may be viewed through the hash value returned by the IPFS. The distributed system is not addressed based on the position, but based on the content, and redundant backup exists in the distributed system, so that the distributed system can resist external security attacks to a certain extent. The characteristics of IPFS decentralization and tamper resistance provide certain guarantees for data storage.
In the process of safely sharing germplasm resource data based on the blockchain, firstly, the provision of germplasm resource data information comprehensively and reasonably according to national germplasm resource data standard specifications is considered, and secondly, the germplasm resource data information is stored by combining with specific characteristics of a blockchain data storage structure. In addition, the method provided by the application provides germplasm resource data information for agricultural workers, scientific research personnel and government departments, and prevents some important data information from being tampered or leaked for other people in order to ensure the safety of the data sharing process, so that information registration is carried out on users such as data providers, data users and the like, and privacy data information of the users is strictly protected, so that other part of data information, namely user data, is generated.
Because all data of the block chain is backed up by each node, excessive redundant data quantity on the chain can reduce consensus efficiency, and additionally increase storage and calculation cost of each node. Therefore, the interstellar file system IPFS is introduced as an under-chain (i.e. out of block chain) storage mode, and non-key information such as data description and the like and a data access mode after authority verification are recorded in an encrypted mode.
In the embodiment of the present application, referring to fig. 1, detailed information of germplasm resource data and detailed information of user data are stored in an IPFS outside a blockchain. The summary information of the germplasm resource data, the summary information of the user data, hash values corresponding to the detailed information of the germplasm resource data, and Hash (Hash) values corresponding to the detailed information of the user data are stored on the blockchain.
In particular, the data user creates an instance of the smart contract at the front end via the API interface provided by web3.Js, and calls the function of the smart contract via the instance. When the germplasm resource data is stored in the IPFS, an API interface provided by the IPFS-API is called, detailed information of the germplasm resource data to be stored is transmitted to an IPFS node, and a hash value returned by the IPFS is stored in an intelligent contract. Here, it may be verified that user data corresponding to users participating in the sharing of germplasm resource data has been successfully stored in the IPFS node by executing the IPFS cat command.
When the method is used, the summary information of the germplasm resource data can be searched on the blockchain, the hash value corresponding to the detailed information of the germplasm resource data is obtained, and the detailed information of the germplasm resource data and the detailed information of the user data stored in the IPFS under the blockchain can be quickly found according to the hash value.
Here, the detailed information of the germplasm resource data may include a relational data text of an attribute, a name, a source, and the like of the germplasm resource data; the detailed information of the user data may include specific units of the user, contact, address, phone, etc. related to the privacy of the user.
In the specific implementation, after the detailed information of the germplasm resource and the detailed information of the user data are encrypted, a storage mode that a block chain is combined with an IPFS is adopted, ciphertext corresponding to the detailed information of the germplasm resource data and ciphertext corresponding to the detailed information of the user data are stored in the IPFS, the IPFS respectively generates and returns a hash value corresponding to the germplasm resource data and a hash value corresponding to the user data while storing the data, and then the hash value is stored in the block chain.
It should be noted that, the hash value of the previous block is stored in the block header of the next block of the blockchain, and the hash function calculation process is unidirectional, so that the data on the blockchain is difficult to tamper, and the safety of the data on the chain is ensured.
In practical application, each data provider is responsible for management and maintenance, and when sharing is needed, the data provider encrypts and stores detailed information and sharing protocol of the germplasm resource data into the IPFS in a file form, and the IPFS externally provides network services such as uploading, downloading and the like. Meanwhile, the data provider issues the summary information of the germplasm resource data to the blockchain and binds the ownership of the data for the data user to search. When the data user needs to use the germplasm resource data, the required germplasm resource data is searched according to the type of the germplasm resource data or the key words of the summary information, the hash value of the germplasm resource data is obtained, and then the hash value is sent to the IPFS. The IPFS locates the data description according to the received hash value and performs data interaction on the blockchain. The block chain and the IPFS under the chain are accessed by adopting an encrypted access mode.
In some embodiments, the storing the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data in an interstellar file system IPFS specifically includes: and calling an interface API provided by the IPFS, respectively converting the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data into a Buffer byte stream (Buffer), and sending the Buffer byte stream (Buffer) to the IPFS.
The partial code for calling the API interface provided by the IPFS to encrypt and store the germplasm resource data to the IPFS is shown in table 1, where table 1 is as follows:
step S103, sending the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data, and the hash value corresponding to the detailed information of the user data to a blockchain, so as to realize safe sharing of the germplasm resource data.
In the embodiment of the application, the summary information of the germplasm resource data, the summary information of the user data and the Hash value corresponding to the detailed information of the germplasm resource data are stored on a blockchain, the detailed information of the germplasm resource data with large data quantity and high security requirement is stored through an under-chain IPFS, the summary information of the relatively lightweight germplasm resource data, the summary information of the user data and the Hash value corresponding to the detailed information of the germplasm resource data are stored on the chain, the Hash value corresponding to the detailed information of the user data is transmitted in an encrypted manner through an asymmetric encryption method, and therefore the safe sharing of the germplasm resource data is realized.
In some embodiments, the sending the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data, and the hash value corresponding to the detailed information of the user data to the blockchain, so as to realize secure sharing of the germplasm resource data is specifically: and storing the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data and the hash value corresponding to the detailed information of the user data into an intelligent contract of the blockchain so as to realize safe sharing of the germplasm resource data based on the intelligent contract.
In the embodiment of the application, the blockchain is built based on an ethernet (ethernet) platform to support intelligent contracts. Specifically, the blockchain-based germplasm resource data secure sharing method is realized through a DApp framework provided by an Ethernet.
It should be noted that, ethernet (ethernet) is a platform for decentralizing applications, and it is different from the bitcoin blockchain in that ethernet supports intelligent contracts, can issue own tokens, create various services through contracts, and then deploy on ethernet, so as to provide convenient services for people.
The ethernet general architecture is mainly composed of decentralised applications, intelligent contracts, ethernet Virtual Machines (EVM), blockchains, point-to-point transmission (P2P) networks, etc. The EVM compiles and runs the intelligent contract, an interface for calling the intelligent contract by an external application is provided through remote procedure call (Remote Procedure Call, RPC), and the JSON-RPC API of the Ethernet is packaged through web3.js, so that the front end of the system can conveniently interact with the contract.
Here, an intelligent contract refers to a computerized transaction agreement that performs contract terms, and is a piece of event-triggered computer program that is dependent on events.
The intelligent contract deployed on the Ethernet is a piece of code executed in the EVM, the operation can be automatically executed according to the rules agreed in advance, the rules are externally disclosed, any person can acquire the internal rules and data of the contract, no hidden transaction or false transaction information exists in the contract, and all transaction contents are publicly visible.
In practical application, the intelligent contract is used as a business logic layer to process the data storage/retrieval request sent by the data user through the front end. Wherein the front end uses the API interface provided by web3.Js to implement interactions with smart contracts. After the detailed information of the germplasm resource data is stored in an IPFS in an encrypted mode, the summary information of the germplasm resource data and the hash value corresponding to the detailed information of the germplasm resource data are stored in the intelligent contract by calling an API interface provided by web3. Js.
In the embodiment of the application, the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data and the hash value corresponding to the detailed information of the user data are stored in the intelligent contract of the blockchain, and the germplasm resource data is shared through the intelligent contract, so that the germplasm resource data can be shared in a public transparent and tamper-proof way.
In other embodiments, the secure sharing of the germplasm resource data based on the smart contract is implemented specifically as follows: acquiring a hash value corresponding to the detailed information of the germplasm resource data by retrieving the intelligent contract; acquiring ciphertext of detailed information of the germplasm resource data through an API interface provided by the IPFS according to a hash value corresponding to the detailed information of the germplasm resource data; and decrypting the ciphertext of the detailed information of the germplasm resource data based on a crypto-js encryption algorithm library to obtain the germplasm resource data.
In practical application, after detailed information of germplasm resource data and detailed information of user data are encrypted and stored to an IPFS under a chain, summary information and hash values of germplasm resource data are stored to an intelligent contract on the chain, when a data user needs to use the data, a data search request can be sent to the intelligent contract through a front end by web3.js, hash values of needed germplasm resource data are obtained from hash fields of the intelligent contract, and an API interface provided by the IPFS is called according to the hash values of germplasm resource data, so that ciphertext of the detailed information of the germplasm resource data is obtained. Finally, the ciphertext of the detailed information of the germplasm resource data is decrypted through a crypt-js encryption algorithm library according to the private key to obtain the required germplasm resource data and user data, as shown in fig. 3.
In some embodiments, the method further comprises: storing a user name and an account address in the user data in the blockchain; and verifying the identity of the user based on the pre-constructed mapping relation between the user name and the account address.
In the embodiment of the application, the user access and the safety interaction are realized through the user registration login and the identity information authentication. Further, by employing blockchain-based account key technology to secure accounts, IPFS is used to store user details.
In specific implementation, a user registers a blockchain account, obtains a public key/private key, stores personal information of the user (namely detailed information of the user data) in an IPFS in a file form according to the step of storing the user data, and simultaneously receives a hash value corresponding to the detailed information of the user data, wherein the user data at least comprises a user name and an account address.
In the embodiment of the application, the mapping relation between the user name and the account address is obtained through user configuration and is stored in the intelligent contract.
Specifically, in the process of registering the blockchain account, the user establishes a mapping relation between the user name and the account address, wherein the account can be the account address of the user and the account can also be the user name.
When a user logs in, in order to ensure safety, the user needs to be authenticated based on the mapping relation between the user name and the account address. At this time, the user can verify by inputting his own account and password. The user can log in according to the user name, the system judges whether the user inputs the address or the user name when logging in, if the user name is the user name, the user address is found by using the mapping from the user name to the address in the intelligent contract, then the information corresponding to the user is found in the blockchain, and the user information module is jumped to, so that the identity verification is completed.
Wherein, the detailed information of the user data may further include, in addition to the user name and the password: user name, ID card number, specific address, work unit, contact phone, etc. Illustratively, table 2 shows the ciphertext result after encrypting the three bits of user information and the Hash value result returned after storing in the IPFS. Table 2 is as follows:
Table 2 detailed information storage results of user data
In summary, in the present application, by performing asymmetric encryption processing on germplasm resource data and user privacy data, an encrypted file of germplasm resource data and an encrypted file of user privacy data are correspondingly obtained; sending the encrypted file of the germplasm resource data and the encrypted file of the user privacy data to an interstellar file system (IPFS), and receiving a hash value corresponding to the germplasm resource data and a hash value corresponding to the user privacy data returned by the IPFS; and sending the hash value corresponding to the germplasm resource data and the hash value corresponding to the user privacy data to the block chain network. Therefore, the link-up and link-down collaborative storage model combining the IPFS and the blockchain network is adopted, the safety of the germplasm resource data and the user privacy data is ensured based on an asymmetric encryption technology, and the germplasm resource data is efficiently and safely shared through an interaction mode of intelligent contracts.
In the method, an Ethernet technology in a blockchain is combined with IPFS, data detailed information is stored on an IPFS node through a data storage model based on collaborative storage under a chain upper chain and data information security sharing encryption, and a Hash value after data encryption is stored on the blockchain; based on the Ethernet frame, an intelligent contract interaction mode is designed, a germplasm resource data sharing user privacy information storage result is given, and the result shows that for a germplasm resource data sharing user information management link, the user identity can be effectively verified, and the privacy data information can be safely stored.
The big data age agricultural data has become important assets and value sources for promoting the development of modern agriculture, and for big data resources in the field of modern agricultural research, the germplasm resource data safe sharing method based on the blockchain provided by the embodiment of the application can make full use of credibility and safety of the blockchain technology, and based on an Ethernet architecture, an asymmetric encryption technology is introduced to ensure data safety, so that sharing efficiency is improved, and germplasm resource data can be better safely and reasonably utilized.
Exemplary System
The embodiment of the application also provides a germplasm resource data safe sharing system based on the blockchain, and fig. 5 shows a schematic structural diagram of the germplasm resource data safe sharing system based on the blockchain provided by some embodiments of the application. As shown in fig. 5, the system includes: encryption unit 501, storage unit 502, and sharing unit 503. Wherein:
an encryption unit 501 configured to perform asymmetric encryption processing on detailed information of germplasm resource data and detailed information of user data, respectively, to obtain ciphertext of the detailed information of germplasm resource data and ciphertext of the detailed information of user data, respectively; wherein, the germplasm resource data is provided by a data provider and shared to a data user;
A storage unit 502, configured to store a ciphertext of the detailed information of the germplasm resource data and a ciphertext of the detailed information of the user data to an interstellar file system IPFS, and receive a hash value corresponding to the detailed information of the germplasm resource data returned by the IPFS and a hash value corresponding to the detailed information of the user data;
and a sharing unit 503 configured to send the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data, and the hash value corresponding to the detailed information of the user data to a blockchain, so as to realize safe sharing of the germplasm resource data.
The system for safely sharing the germplasm resource data based on the blockchain can realize the steps and the processes of any of the germplasm resource data safe sharing methods based on the blockchain, achieve the same technical effects and are not described in detail herein.
Detailed description of the invention
The present example provides a specific implementation of a blockchain-based germplasm resource data secure sharing system, the system comprising: a presentation layer, a business layer, a contract layer, a blockchain layer, and a data layer.
Referring to fig. 6, the system is constructed based on an ethernet architecture and is divided into a performance layer, a business layer, an intelligent contract layer, a blockchain layer and a data layer. The intelligent contract layer is used for processing operations sent by the front end, and the front end and the intelligent contract are interacted with each other by using an API interface provided by web3.js. The intelligent contract layer is used as a core brain of the whole system and provides main logic functions of the system, so that the function realization of the system is completed. The block chain layer comprises a plurality of nodes, each node forms a distributed system, the nodes realize data synchronization through a consensus mechanism, in the process of storing germplasm resource data into the block chain, the result of one node is finally used as the standard, and an excitation mechanism is provided for the node, so that the data reliability is ensured by using the consensus mechanism, and the common acceptance of all the nodes is obtained. The storage of the data types such as pictures, documents and the like in the system requires the front end to interact with the IPFS, and the storage of the data types is realized by calling an IPfs-api interface provided by the IPFS. The system realizes the encryption of the data by invoking the crypto-js encryption algorithm library by the asymmetric encryption algorithm RSA. The system also comprises a P2P networking for ensuring that each node of the blockchain has the same authority, and each user node can bear the functions of network routing, data recording, data transmission and data submission.
The system adopts a solubility language to write intelligent contracts, and performs data information storage through the intelligent contracts so as to complete the functions of information storage, information modification and the like of the system. The business layer provides the back-end logic of the system and uses node.js, web3.js, IPFS-api interfaces to communicate with intelligent contracts, blockchain networks and IPFS nodes. The front end utilizes the front end framework of html+css+JavaScript to write the modularized page application.
In specific implementation, the system uses node. Js to perform module reference to realize interaction between the business logic layer and the front-end interface. And the account created by the Ganache module of the Ethernet is convenient for debugging and running during system development. Ganache is a personal blockchain of an Ethernet developer running on a personal desktop, facilitating the development of blockchains. After entering the project with the command, the project can be deployed. Executing the compile contracts, deploy contract commands, see FIG. 4 for a specific compile and deployment flow. After executing the compiling command, compiling the uncompiled contracts in the system, compiling the intelligent contracts into byte code files which can be executed by the EVM, and generating json files after compiling, wherein the json files enable people to call contract instances in JavaScript. After compilation, the contracts may be deployed. Executing the contract deployment command and deploying the compiled contracts on a chain.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (8)
1. The germplasm resource data safe sharing method based on the blockchain is characterized by comprising the following steps of:
respectively carrying out asymmetric encryption processing on detailed information of germplasm resource data and detailed information of user data, and correspondingly obtaining ciphertext of the detailed information of the germplasm resource data and ciphertext of the detailed information of the user data; wherein, the germplasm resource data is provided by a data provider and shared to a data user;
storing ciphertext of detailed information of the germplasm resource data and ciphertext of detailed information of the user data into an interstellar file system (IPFS), and receiving a hash value corresponding to the detailed information of the germplasm resource data and a hash value corresponding to the detailed information of the user data returned by the IPFS;
transmitting the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data and the hash value corresponding to the detailed information of the user data to a blockchain so as to realize safe sharing of the germplasm resource data;
The user data is user information of a data provider and a data user, and the method further comprises:
storing a user name and an account address in the user data in the blockchain;
verifying the identity of the user based on a pre-constructed mapping relationship between the user name and the account address;
and storing the IPFS as an under-chain storage mode in an encrypted mode to pass the data access mode after the authority verification.
2. The blockchain-based germplasm resource data secure sharing method according to claim 1, wherein the asymmetric encryption processing is performed on detailed information of germplasm resource data and detailed information of user data respectively, and ciphertext of the detailed information of germplasm resource data and ciphertext of the detailed information of user data are obtained correspondingly, specifically:
generating an asymmetric key pair through an RSA algorithm in an asymmetric encryption method;
and respectively carrying out encryption processing on the detailed information of the germplasm resource data and the detailed information of the user data based on the asymmetric key pair, and correspondingly obtaining the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data.
3. The blockchain-based germplasm resource data secure sharing method according to claim 2, wherein the encryption processing is performed on the detailed information of the germplasm resource data and the detailed information of the user data based on the asymmetric key pair respectively, and ciphertext of the detailed information of the germplasm resource data and ciphertext of the detailed information of the user data are correspondingly obtained, specifically:
and when the data provider shares the detailed information of the germplasm resource data, the detailed information of the germplasm resource data and the detailed information of the user data are respectively encrypted by adopting the private key in the asymmetric key pair, and the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data are correspondingly obtained.
4. The blockchain-based germplasm resource data secure sharing method according to claim 2, wherein the encryption processing is performed on the detailed information of the germplasm resource data and the detailed information of the user data based on the asymmetric key pair, and the ciphertext corresponding to the detailed information of the germplasm resource data and the ciphertext corresponding to the detailed information of the user data are specifically:
And when the data provider performs authorized interaction with the data user, the public key in the asymmetric key pair is adopted to encrypt the detailed information of the germplasm resource data and the detailed information of the user data respectively, so as to obtain ciphertext of the detailed information of the germplasm resource data and ciphertext of the detailed information of the user data correspondingly.
5. The blockchain-based germplasm resource data secure sharing method according to claim 1, wherein the storing the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data into an interstellar file system IPFS is specifically as follows:
and calling an interface API provided by the IPFS, respectively converting the ciphertext of the detailed information of the germplasm resource data and the ciphertext of the detailed information of the user data into a cache byte stream, and sending the cache byte stream to the IPFS.
6. The blockchain-based germplasm resource data secure sharing method according to claim 1, wherein the sending the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data, and the hash value corresponding to the detailed information of the user data to the blockchain is specifically:
And storing the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data and the hash value corresponding to the detailed information of the user data into an intelligent contract of the blockchain so as to realize safe sharing of the germplasm resource data based on the intelligent contract.
7. The blockchain-based germplasm resource data secure sharing method according to claim 6, wherein the secure sharing of germplasm resource data is achieved based on the intelligent contract, specifically:
acquiring a hash value corresponding to the detailed information of the germplasm resource data by retrieving the intelligent contract;
acquiring ciphertext of detailed information of the germplasm resource data through an API interface provided by the IPFS according to a hash value corresponding to the detailed information of the germplasm resource data;
and decrypting the ciphertext of the detailed information of the germplasm resource data based on a crypto-js encryption algorithm library to obtain the germplasm resource data.
8. A blockchain-based germplasm resource data secure sharing system, comprising:
an encryption unit configured to perform asymmetric encryption processing on detailed information of germplasm resource data and detailed information of user data respectively, and correspondingly obtain ciphertext of the detailed information of germplasm resource data and ciphertext of the detailed information of user data; wherein, the germplasm resource data is provided by a data provider and shared to a data user;
The storage unit is configured to store ciphertext of detailed information of the germplasm resource data and ciphertext of detailed information of the user data to an interstellar file system (IPFS), and receive a hash value corresponding to the detailed information of the germplasm resource data returned by the IPFS and a hash value corresponding to the detailed information of the user data;
the sharing unit is configured to send the summary information of the germplasm resource data, the summary information of the user data, the hash value corresponding to the detailed information of the germplasm resource data and the hash value corresponding to the detailed information of the user data to a blockchain so as to realize safe sharing of the germplasm resource data;
the user data is user information of a data provider and a data user, and the user data further comprises a verification unit configured to:
storing a user name and an account address in the user data in the blockchain;
verifying the identity of the user based on a pre-constructed mapping relationship between the user name and the account address;
and recording the data access mode after passing the authority verification in an encrypted mode by taking the IPFS as an under-chain storage mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210829404.6A CN115208665B (en) | 2022-07-15 | 2022-07-15 | Germplasm resource data safe sharing method and system based on blockchain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210829404.6A CN115208665B (en) | 2022-07-15 | 2022-07-15 | Germplasm resource data safe sharing method and system based on blockchain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115208665A CN115208665A (en) | 2022-10-18 |
| CN115208665B true CN115208665B (en) | 2023-05-05 |
Family
ID=83581433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210829404.6A Active CN115208665B (en) | 2022-07-15 | 2022-07-15 | Germplasm resource data safe sharing method and system based on blockchain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115208665B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115801815B (en) * | 2023-02-03 | 2023-05-05 | 安徽中科晶格技术有限公司 | Plant growth status sharing method and device based on blockchain and storage medium |
| CN116185974B (en) * | 2023-04-28 | 2023-08-04 | 北京市农林科学院信息技术研究中心 | Fishery germplasm resource data sharing method and system based on block chain |
| CN116502962B (en) * | 2023-06-29 | 2023-11-07 | 乐番农业科技(北京)有限公司 | Intelligent management method and system for plant germplasm resources |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111552955A (en) * | 2020-04-29 | 2020-08-18 | 合肥井创数字科技有限公司 | Personal identity authentication method and device based on block chain and IPFS |
| CN113568978A (en) * | 2021-08-01 | 2021-10-29 | 青岛农业大学 | Data sharing system and method based on double-chain technology in block chain |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11063759B2 (en) * | 2018-04-27 | 2021-07-13 | The University Of Akron | Blockchain-empowered crowdsourced computing system |
| US11068470B2 (en) * | 2018-11-09 | 2021-07-20 | Innoplexus Ag | System and method for interoperability of blockchains |
| CN110059054A (en) * | 2019-03-25 | 2019-07-26 | 天津大学 | It is a kind of based on the information of vehicles of block chain and IPFS storage and search method |
| CN112835612A (en) * | 2021-01-26 | 2021-05-25 | 平衡机器科技(深圳)有限公司 | Electronic document version management method and device based on block chain |
| CN113742764B (en) * | 2021-11-08 | 2022-04-19 | 北京中科金财科技股份有限公司 | Trusted data secure storage method, retrieval method and equipment based on block chain |
| CN113961535A (en) * | 2021-11-26 | 2022-01-21 | 北京航空航天大学 | Data trusted storage sharing system and method based on block chain |
| CN114172735B (en) * | 2021-12-11 | 2023-07-14 | 中国人民解放军战略支援部队信息工程大学 | Double-chain hybrid block chain data sharing method and system based on intelligent contracts |
-
2022
- 2022-07-15 CN CN202210829404.6A patent/CN115208665B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111552955A (en) * | 2020-04-29 | 2020-08-18 | 合肥井创数字科技有限公司 | Personal identity authentication method and device based on block chain and IPFS |
| CN113568978A (en) * | 2021-08-01 | 2021-10-29 | 青岛农业大学 | Data sharing system and method based on double-chain technology in block chain |
Non-Patent Citations (1)
| Title |
|---|
| 基于联盟区块链的农产品质量安全高效追溯体系;王可可等;计算机应用;第39卷(第08期);第2438-2443页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115208665A (en) | 2022-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11803537B2 (en) | Systems, methods, and apparatuses for implementing an SQL query and filter mechanism for blockchain stored data using distributed ledger technology (DLT) | |
| US11783024B2 (en) | Systems, methods, and apparatuses for protecting consumer data privacy using solid, blockchain and IPFS integration | |
| US11899817B2 (en) | Systems, methods, and apparatuses for storing PII information via a metadata driven blockchain using distributed and decentralized storage for sensitive user information | |
| US10320843B1 (en) | Methods, systems, and devices for encrypted electronic storage and confidential network transfer of private data through a trustless distributed ledger technology system | |
| CN110135986B (en) | Method for realizing searchable encrypted file data based on blockchain intelligent contract | |
| CN115208665B (en) | Germplasm resource data safe sharing method and system based on blockchain | |
| CN110400221B (en) | Data processing method, system, storage medium and computer equipment | |
| EP3973431A1 (en) | System or method to implement right to be forgotten on metadata driven blockchain using secret sharing and consensus on read | |
| JP2023089207A (en) | Consolidated blockchain-based data transfer control method and system | |
| JP2021534512A (en) | DAG-based transaction processing methods and systems in distributed ledgers | |
| JP2022507784A (en) | Systems and methods for efficient and secure processing, access, and transmission of data over blockchain networks | |
| Zhou et al. | Towards a data-centric view of cloud security | |
| Wang et al. | Performance benchmarking and optimization for blockchain systems: A survey | |
| US20210073796A1 (en) | Method of selective authentication of a blockchain user with a smart contract | |
| Rupa et al. | Preserve security to medical evidences using blockchain technology | |
| US11354335B2 (en) | Method and apparatus for obtaining number for transaction-accessed variable in blockchain in parallel | |
| CN114880697A (en) | Block chain-based data fingerprint generation method and device and storage medium | |
| Jezek | Ethereum Data Structures | |
| Tang et al. | Trac2Chain: trackability and traceability of graph data in blockchain with linkage privacy | |
| CN103957173A (en) | Semantic switch | |
| Yan et al. | Handling conditional queries and data storage on Hyperledger Fabric efficiently | |
| CN115378605A (en) | Data processing method and device based on block chain | |
| Tao et al. | UEPF: A blockchain based Uniform Encoding and Parsing Framework in multi-cloud environments. | |
| Shi et al. | AUDITEM: toward an automated and efficient data integrity verification model using blockchain | |
| ROSHINI | MASTER OF ENGINEERING |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |