CN117852107B - Ocean scientific investigation data sharing platform based on block chain and data processing method - Google Patents
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Abstract
The invention discloses a marine scientific investigation data sharing platform based on a blockchain and a data processing method, which relate to the field of marine investigation, and the method comprises the following steps: acquiring marine scientific investigation data acquired by marine investigation equipment; the marine survey apparatus is disposed on land or a survey vessel; processing ocean scientific investigation data through an improved hash algorithm to obtain a hash value; the operation of the hash value to obtain a new hash value comprises the following steps: if the hash value length is even, the hash value is divided into two equal parts, the two parts are subjected to exclusive OR operation to obtain a new hash value, if the hash value length is odd, the hash value is divided into two parts, the first part is one bit more than the second part, the last bit of the first part is copied and then added to the last of the second part, and the first part and the second part are subjected to exclusive OR operation to obtain the new hash value. The safety and integrity consistency of the ocean scientific investigation data are improved, and an ocean scientific investigation database is established and safely stored, shared and transacted.
Description
Technical Field
The invention relates to the technical field of marine investigation, in particular to a marine scientific investigation data sharing platform based on a blockchain and a data processing method.
Background
In China, the marine survey has smaller scale compared with other industries, the resources and the information are relatively single and distributed, and the marine survey is easy to logically integrate and manage. However, for many years, domestic marine investigation and monitoring data have not been effectively integrated, and relatively unified and modularized management systems and systems are formed. The data information acquired by various marine investigation equipment in real time at sea cannot be shared and interacted in time, most of the marine investigation equipment is taken as investigation units, most of the marine investigation equipment is arranged and used after the ship voyage task is finished, and the marine investigation equipment has serious hysteresis in time and becomes isolated data island. Moreover, since the manner of processing the survey data is different in each unit, most of the survey data itself is not clear in information, is not clear in category, and cannot be classified in a unified and reasonable standard. From the industrial macroscopic view, ocean scientific investigation data and resource information are difficult to transmit, share and integrate, management, application, sharing and service are scattered and chapter-free, transmission choking is realized, the application is single, the use rate is low, the processing is simple, and the data barrier phenomenon among various areas, organizations and institutions is serious. The utilization efficiency of ocean scientific investigation data and resources is restricted to a great extent, fruits which are obtained by the first-line operation of ocean investigation at great risk are wasted, and further the transformation and long-term development of the results of the ocean investigation industry are restricted. On the premise, the processing of the related data and resource information in the marine investigation industry, the real-time transmission, integration, interaction, sharing and reasonable distribution become the problems to be solved urgently.
The hash algorithm is suitable for encryption processing of ocean scientific investigation data, wherein the SHA-256 algorithm is the most mature and universal. The algorithm has the advantages of irreversibility, uniformity, tamper resistance and the like, and can ensure confidentiality, integrity and efficiency of encryption transmission of ocean scientific investigation data to a certain extent. However, the algorithm has the technical defects of collision of output values caused by the same length of the output values, fixed length of generated hash values, integral signature by a single node, code implementation loopholes, randomness of a second-order differential output sequence and the like, is easy to attack by birthday and differential attack, and has the risk of data disclosure and distortion. Therefore, there is a need for adaptive improvement and innovation of SHA256 algorithm for the characteristics and requirements of marine scientific data encryption process. The core requirements of the encryption processing of ocean scientific investigation data mainly comprise the following points:
1. the accuracy is that: marine scientific data cannot be tampered with or partially lost during transmission and storage.
2. The reliability is as follows: the source and quality of marine scientific investigation data are ensured to be reliable, and the marine scientific investigation data can be verified and audited.
3. Ensuring that some of the information of the marine scientific data is not acquired or compromised by unauthorized third party units.
4. The method can be used as follows: ensuring that the licensed units can access and use the marine scientific data normally.
5. The method is rapid: the ocean scientific investigation data of one line and one hand can be rapidly encrypted, packaged and uplink, and multi-party sharing is realized.
Based on the technical problems, the invention provides an improved technical scheme.
Disclosure of Invention
The invention provides a marine scientific investigation data sharing platform and a data processing method based on a blockchain, which realize the processing of related data and resource information in the marine investigation industry, and realize real-time transmission, integration, interaction, sharing and reasonable distribution.
According to an aspect of the present disclosure, there is provided a marine scientific investigation data processing method, the method comprising:
acquiring marine scientific investigation data acquired by marine investigation equipment; the marine survey apparatus is disposed on land or a survey vessel;
wherein the marine scientific data includes, but is not limited to: longitude data, latitude data, seawater pressure data, chlorophyll concentration data, and temperature, salinity, dissolved oxygen concentration, and nutrient salt concentration of seawater;
Processing the marine scientific data through an improved hash algorithm, comprising:
Determining the hash value length of the data according to the type and the size of the marine scientific investigation data: the hash value length is between 32 bits and 256 bits if the data is of the text type, and between 16 bits and 64 bits if the data is of the numeric type;
obtaining a hash value through a hash algorithm according to the data and the hash length corresponding to the data;
The step of calculating the hash value to obtain a new hash value comprises the following steps: if the hash value length is even, dividing the hash value into two equal-length parts, performing exclusive-or operation on the two parts to obtain a new hash value, if the hash value length is odd, dividing the hash value into two equal-length parts, wherein the first part is one bit more than the second part, copying the last bit of the first part, adding the copied last bit of the first part to the last bit of the second part, and performing exclusive-or operation on the first part and the second part to obtain the new hash value;
the new hash value is the processing result of the ocean scientific investigation data.
In one possible implementation, the method includes:
Acquiring marine scientific investigation data acquired by marine investigation equipment;
Wherein the marine scientific data comprises: longitude data, latitude data, seawater pressure data, chlorophyll concentration data, and temperature, salinity, dissolved oxygen concentration, and nutrient salt concentration of seawater;
multiple signing of marine scientific data comprising:
Dividing marine scientific investigation data into a plurality of fragment data according to the number of processing nodes;
Storing the fragment data into a fragment data list;
The processing node carries out hash operation on the fragment data through a hash algorithm to obtain a corresponding hash value;
Encrypting the hash value according to the private key of the node to obtain a digital signature;
And adding the tuple formed by the hash value and the corresponding digital signature into a list, respectively combining all the hash values and the corresponding digital signatures in the list into a character string, carrying out hash operation on the synthesized character string through a hash algorithm to obtain a hash value, and carrying out hash operation on the hash value of the synthesized character string by using private key combinations of all the processing nodes to obtain a multi-signature result.
According to an aspect of the present disclosure, there is provided a marine scientific investigation data sharing platform based on a blockchain, the platform applying the marine scientific investigation data processing method, the platform comprising: a alliance chain consisting of a plurality of marine survey units; wherein the nodes on the alliance chain are servers of the plurality of marine survey units; the nodes comprise super nodes, consensus nodes, storage nodes and participation nodes; the super node has verification authority, the common node has data transaction authority, the storage node has data storage and transaction authority, and the super node, the common node, the storage node, the nodes above and the participating nodes have data acquisition authority;
the server of the ocean investigation unit acquires ocean scientific investigation data acquired by the processed ocean investigation equipment through satellite communication; performing multiple signature processing on the data by the rights node of the ocean scientific investigation data;
The rights node of the ocean scientific investigation data broadcasts description information of the ocean scientific investigation data to the consensus nodes in the alliance chain;
Each consensus node competes and determines a storage node with the storage authority of ocean scientific investigation data in a voting mode;
The storage node issues storage request information to the data ownership node, and the data ownership node sends ocean scientific investigation data to the data storage node after receiving the storage request information;
The storage node adds the self address information of the description information of the data and then issues the description information of the data as block data to the alliance chain to generate a new zone block, and the new zone block is linked to the tail part of the alliance chain after being time stamped;
And the super node verifies the uplink block data, and after the verification is passed, the super node and each consensus node respectively account for the successful data storage.
In one possible implementation, the data requesting node in the coalition chain retrieves descriptive information of marine scientific data in the coalition chain; according to the address of the data storage node in the description information, sending data transaction request information to the data storage node, and the identity information of the data request node;
the data storage node receives the data transaction request information and then sends transaction authentication request information to the data request node;
after confirming the transaction authentication request information, the data request node sends transaction authentication confirmation information to the data storage node;
After receiving the transaction authentication confirmation information, the data storage node sends the encrypted ocean scientific investigation data to the data request node;
The data request node decrypts the received ocean data according to the private key of the data request node to obtain ocean scientific investigation data;
The data request node performs format verification on the decrypted marine scientific investigation data, and if the verification is correct, the data request node sends transaction confirmation information to the data storage node, and the data storage node sends feedback information to the data request node after receiving the confirmation information;
The data storage node issues the transaction record as block data to the alliance chain, and marks a time stamp on the block data, and after the super node verifies the transaction, the super node and each consensus node account for and broadcast the transaction to end.
Compared with the prior art, the invention has the beneficial effects that:
In the ocean scientific investigation data processing method disclosed by the embodiment of the disclosure, the length of the hash value generated by the hash algorithm is variable, and the length of the hash value can be dynamically adjusted according to the type and the size of ocean scientific investigation data, so that the information density and the anti-collision capability of the hash value are improved. The new hash value can be used for verification and comparison of marine scientific data. For example, the integrity and consistency of the data may be verified by comparing the hash value of the original data with the processed hash value.
In the ocean scientific investigation data processing method of an embodiment of the present disclosure, ocean scientific investigation data is divided into multiple segments, each segment is hashed and signed by different nodes, and then all hash values and signatures are combined into a final hash value and signature, thereby improving the usability and security of the data. The result of the multiple signature may be used for secure transmission of data. The result of the multiple signature can be used for verification and comparison of data. For example, the integrity and consistency of the data may be verified by comparing the original data to the processed multiple signatures.
The marine scientific investigation data sharing platform based on the blockchain can realize safe sharing and efficient management of the marine scientific investigation data. For example, the data can be stored in a decentralised manner by a block chain technology, so that the safety and reliability of the data are improved. The large marine investigation database and the transaction platform are created by adopting a decentralization system architecture and an algorithm, so that solid guarantee is provided for storage, transmission, interaction and sharing of marine scientific investigation data. The alliance chain is used as a localized variant of the blockchain, can provide a safe, efficient and controllable way for marine investigation industry participants to carry out cooperation and data exchange according to the characteristics of decentralization and transparent disclosure, solves the problem of island of marine investigation industry data on the basis of logic, realizes autonomous storage, release, search and interaction of marine scientific investigation data, ensures that the transaction process is safe and controllable, realizes comprehensive supervision, creates a marine investigation big database and a safe storage, sharing and transaction platform, thereby promoting digital transformation and innovation development of the marine investigation field, and integrating a unified and modularized marine investigation management system.
Drawings
FIG. 1 shows a block flow diagram of a marine scientific data processing method according to an embodiment of the present disclosure.
FIG. 2 shows a block flow diagram of a method of marine scientific data processing according to an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments, features and aspects of the disclosure will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
In addition, numerous specific details are set forth in the following detailed description in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements, and circuits well known to those skilled in the art have not been described in detail in order not to obscure the present disclosure.
Fig. 1 shows a flowchart of a marine scientific data processing method according to an embodiment of the present disclosure, and as shown in fig. 1, the marine scientific data processing method includes:
S101, acquiring marine scientific investigation data acquired by marine investigation equipment; the marine survey apparatus is disposed on land or a survey vessel;
wherein the marine scientific data includes, but is not limited to: longitude data, latitude data, seawater pressure data, chlorophyll concentration data, and temperature, salinity, dissolved oxygen concentration, and nutrient salt concentration of seawater;
Processing the marine scientific data through an improved hash algorithm, comprising:
S102, determining the hash value length of the data according to the type and the size of the marine scientific investigation data: the hash value length is between 32 bits and 256 bits if the data is of the text type, and between 16 bits and 64 bits if the data is of the numeric type;
S103, obtaining a hash value through a hash algorithm according to the data and the hash length corresponding to the data;
S104, calculating the hash value to obtain a new hash value comprises the following steps: if the hash value length is even, dividing the hash value into two equal-length parts, performing exclusive-or operation on the two parts to obtain a new hash value, if the hash value length is odd, dividing the hash value into two equal-length parts, wherein the first part is one bit more than the second part, copying the last bit of the first part, adding the copied last bit of the first part to the last bit of the second part, and performing exclusive-or operation on the first part and the second part to obtain the new hash value;
s105, the new hash value is the processing result of the ocean scientific investigation data.
For example, argo buoy and underwater glider acquire marine scientific data by monitoring data such as temperature, salinity, depth, pressure, etc. of sea water as marine survey equipment. The underwater glider is an underwater robot which can observe and detect the ocean in a large scale and long time sequence in the ocean water body, realizes the heave through buoyancy adjustment and realizes the underwater gliding movement by the aid of the hydrodynamic force of the fixed wings. After the track is preset, the real-time hydrological data of the route can be automatically measured through the carried CTD and other sensors, and satellite communication is used for transmitting the observed data and receiving remote control instructions.
The Argo buoy and the underwater glider have strong timeliness of acquiring data, miscellaneous content and more demand parties, and need to be rapidly transmitted and shared in the global scope, but at present, the data management mode of the Argo buoy and the underwater glider is still limited to the point-to-point transmission of the traditional internet, and cannot be rapidly shared, interacted and integrated in a large scale according to the identity information, the rights and interests information and the actual demands of multiple demand parties.
In the ocean scientific investigation data processing method disclosed by the embodiment of the disclosure, the length of the hash value generated by the hash algorithm is variable, and the length of the hash value can be dynamically adjusted according to the type and the size of ocean scientific investigation data, so that the information density and the anti-collision capability of the hash value are improved. The new hash value can be used for verification and comparison of marine scientific data. For example, the integrity and consistency of the data may be verified by comparing the hash value of the original data with the processed hash value.
FIG. 2 shows a block flow diagram of a method of marine scientific data processing according to an embodiment of the present disclosure. A method of marine scientific data processing, the method comprising:
S201, acquiring marine scientific investigation data acquired by marine investigation equipment;
Wherein the marine scientific data comprises: longitude data, latitude data, seawater pressure data, chlorophyll concentration data, and temperature, salinity, dissolved oxygen concentration, and nutrient salt concentration of seawater;
multiple signing of marine scientific data comprising:
s202, dividing marine scientific investigation data into a plurality of fragment data according to the number of processing nodes;
s203, storing the fragment data into a fragment data list;
S204, the processing node carries out hash operation on the fragment data through a hash algorithm to obtain a corresponding hash value;
S205, encrypting the hash value according to the private key of the node to obtain a digital signature;
S206, adding the tuple formed by the hash value and the corresponding digital signature into a list, respectively merging all hash values in the list and the corresponding digital signatures into a character string, carrying out hash operation on the synthesized character string through a hash algorithm to obtain a hash value, and carrying out hash operation on the hash value of the synthesized character string by using private key combinations of all processing nodes to obtain a multi-signature result.
In the ocean scientific investigation data processing method of an embodiment of the present disclosure, ocean scientific investigation data is divided into multiple segments, each segment is hashed and signed by different nodes, and then all hash values and signatures are combined into a final hash value and signature, thereby improving the usability and security of the data. The result of the multiple signature may be used for secure transmission of data. The result of the multiple signature can be used for verification and comparison of data. For example, the integrity and consistency of the data may be verified by comparing the original data to the processed multiple signatures. The usability and the safety of the data are improved.
The marine scientific investigation data sharing platform based on the blockchain disclosed by the embodiment of the disclosure, which applies the marine scientific investigation data processing method, comprises the following steps: a alliance chain consisting of a plurality of marine survey units; wherein the nodes on the alliance chain are servers of the plurality of marine survey units; the nodes comprise super nodes, consensus nodes, storage nodes and participation nodes; the super node has verification authority, the consensus node has data transaction authority, the storage node has data storage and transaction authority, and the above nodes and the participating nodes have data acquisition authority;
the server of the ocean investigation unit acquires ocean scientific investigation data acquired by the processed ocean investigation equipment through satellite communication; performing multiple signature processing on the data by the rights node of the ocean scientific investigation data;
The rights node of the ocean scientific investigation data broadcasts description information of the ocean scientific investigation data to the consensus nodes in the alliance chain;
Each consensus node competes and determines a storage node with the storage authority of ocean scientific investigation data in a voting mode;
The storage node issues storage request information to the data ownership node, and the data ownership node sends ocean scientific investigation data to the data storage node after receiving the storage request information;
The storage node adds the self address information of the description information of the data and then issues the description information of the data as block data to the alliance chain to generate a new zone block, and the new zone block is linked to the tail part of the alliance chain after being time stamped;
And the super node verifies the block data of the uplink, and after the verification is passed, the super node and each consensus node respectively account, the data storage is successful, and all nodes on the chain can search the block records and search the ocean scientific investigation data.
For example, the process of acquiring data from the platform is as follows: after the data request node which needs to acquire the ocean scientific data on the chain retrieves the description information of the ocean scientific data, the data transaction request information and the node identity information are sent to the data storage node according to the data storage node address in the description information. And after receiving the data transaction request information, the data rights node sends a transaction authentication request to the data rights node. And after the data right node confirms, returning transaction authentication confirmation information. After receiving the transaction authentication confirmation information, the data storage node encrypts and packages the data through an improved ocean scientific investigation data processing method, and ocean data is sent to the data request node in a point-to-point mode. The data request node decrypts the received ocean data according to the private key of the data request node to obtain ocean scientific investigation data, and verifies the data; if the verification is correct, the data right node sends the transaction confirmation information to the data storage node, and the data storage node sends the feedback information to the data right node after receiving the confirmation information. After the feedback information is successfully sent, the data storage node issues the record of the transaction as block data to a data transaction chain, a new block is generated and connected to the tail of the block chain, a timestamp is marked, and after the super node passes verification, the super node and each consensus node account, and the transaction is broadcasted to end. Thereafter, each participating node can directly access the search block record of the consensus node on the chain for investigation data search.
The new hash value is the processing result of the ocean scientific investigation data, and the processing result is stored, transmitted, shared and interacted with a platform, and the ocean scientific investigation data high-efficiency sharing and the platform processing are realized by improving the ocean scientific investigation data processing method, creating a non-coin alliance chain suitable for the ocean scientific investigation data processing.
The marine scientific investigation data sharing platform based on the blockchain can realize safe sharing and efficient management of the marine scientific investigation data. For example, the data can be stored in a decentralised manner by a block chain technology, so that the safety and reliability of the data are improved. The large marine investigation database and the transaction platform are created by adopting a decentralization system architecture and an algorithm, so that solid guarantee is provided for storage, transmission, interaction and sharing of marine scientific investigation data. The alliance chain is used as a localized variant of the blockchain, can provide a safe, efficient and controllable way for marine investigation industry participants to carry out cooperation and data exchange according to the characteristics of decentralization and transparent disclosure, solves the problem of island of marine investigation industry data on the basis of logic, realizes autonomous storage, release, search and interaction of marine scientific investigation data, ensures that the transaction process is safe and controllable, realizes comprehensive supervision, creates a marine investigation big database and a safe storage, sharing and transaction platform, thereby promoting digital transformation and innovation development of the marine investigation field, and integrating a unified and modularized marine investigation management system.
In one possible implementation, the data requesting node in the coalition chain retrieves descriptive information of marine scientific data in the coalition chain; according to the address of the data storage node in the description information, sending data transaction request information to the data storage node, and the identity information of the data request node;
the data storage node receives the data transaction request information and then sends transaction authentication request information to the data request node;
after confirming the transaction authentication request information, the data request node sends transaction authentication confirmation information to the data storage node;
After receiving the transaction authentication confirmation information, the data storage node sends the encrypted ocean scientific investigation data to the data request node;
The data request node decrypts the received ocean data according to the private key of the data request node to obtain ocean scientific investigation data;
The data request node performs format verification on the decrypted marine scientific investigation data, and if the verification is correct, the data request node sends transaction confirmation information to the data storage node, and the data storage node sends feedback information to the data request node after receiving the confirmation information; the format check is to verify whether the investigation data has obvious decoding errors or not and whether the messy codes appear or not.
The data storage node issues the transaction record as block data to the alliance chain, and marks a time stamp on the block data, and after the super node verifies the transaction, the super node and each consensus node account for and broadcast the transaction to end. The transaction record includes: the system comprises a data sender, a data receiver, a data verifier, an index of transaction data and a transaction type.
The marine investigation coinless alliance chain eliminates instability from volatility and value solidification of digital currency. In conventional blockchains, fluctuations in digital monetary prices can lead to participants experiencing significant risks in transactions, affecting the stability and predictability of marine scientific data storage and transmission. The non-coin alliance chain reduces the influence of digital currency economic fluctuation on the marine scientific investigation data alliance chain network through identity conditions and other incentive mechanisms such as rights and interests proving or contribution proving, thereby improving the reliability and safety of marine scientific investigation data transmission and interaction. The convenience provides a safer and more reliable digital environment for industries and participants, and promotes the development and innovation of the digitalization of ocean data.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (4)
1. A method for processing marine scientific investigation data, the method comprising:
acquiring marine scientific investigation data acquired by marine investigation equipment; the marine survey apparatus is disposed on land or a survey vessel;
wherein the marine scientific data includes, but is not limited to: longitude data, latitude data, seawater pressure data, chlorophyll concentration data, and temperature, salinity, dissolved oxygen concentration, and nutrient salt concentration of seawater;
Processing the marine scientific data through an improved hash algorithm, comprising:
Determining the hash value length of the data according to the type and the size of the marine scientific investigation data: the hash value length is between 32 bits and 256 bits if the data is of the text type, and between 16 bits and 64 bits if the data is of the numeric type;
obtaining a hash value through a hash algorithm according to the data and the hash length corresponding to the data;
The step of calculating the hash value to obtain a new hash value comprises the following steps: if the hash value length is even, dividing the hash value into two parts with equal length, performing exclusive-or operation on the two parts to obtain a new hash value, if the hash value length is odd, dividing the hash value into two parts, wherein the first part is one bit more than the second part, copying the last bit of the first part, adding the copied last bit of the first part to the second part, and performing exclusive-or operation on the first part and the second part to obtain the new hash value;
the new hash value is the processing result of the ocean scientific investigation data.
2. A method for processing marine scientific investigation data, the method comprising:
Acquiring marine scientific investigation data acquired by marine investigation equipment;
Wherein the marine scientific data comprises: longitude data, latitude data, seawater pressure data, chlorophyll concentration data, and temperature, salinity, dissolved oxygen concentration, and nutrient salt concentration of seawater;
multiple signing of marine scientific data comprising:
Dividing marine scientific investigation data into a plurality of fragment data according to the number of processing nodes;
Storing the fragment data into a fragment data list;
The processing node carries out hash operation on the fragment data through a hash algorithm to obtain a corresponding hash value;
Encrypting the hash value according to the private key of the node to obtain a digital signature;
And adding the tuple formed by the hash value and the corresponding digital signature into a list, respectively combining all the hash values and the corresponding digital signatures in the list into a character string, carrying out hash operation on the synthesized character string through a hash algorithm to obtain a hash value, and carrying out hash operation on the hash value of the synthesized character string by using private key combinations of all the processing nodes to obtain a multi-signature result.
3. A marine scientific data sharing platform based on a blockchain, the platform applying the marine scientific data processing method of claim 2, wherein the platform comprises: a alliance chain consisting of a plurality of marine survey units; wherein the nodes on the alliance chain are servers of the plurality of marine survey units; the nodes comprise super nodes, consensus nodes, storage nodes and participation nodes; the super node has verification authority, the common node has data transaction authority, the storage node has data storage and transaction authority, and the super node, the common node, the storage node and the participating node all have data acquisition authority;
the server of the ocean investigation unit acquires ocean scientific investigation data acquired by the processed ocean investigation equipment through satellite communication; performing multiple signature processing on the data by the rights node of the ocean scientific investigation data;
The rights node of the ocean scientific investigation data broadcasts description information of the ocean scientific investigation data to the consensus nodes in the alliance chain;
Each consensus node competes and determines a storage node with the storage authority of ocean scientific investigation data in a voting mode;
The storage node issues storage request information to the data ownership node, and the data ownership node sends ocean scientific investigation data to the data storage node after receiving the storage request information;
The storage node adds the self address information of the description information of the data and then issues the description information of the data as block data to the alliance chain to generate a new zone block, and the new zone block is linked to the tail part of the alliance chain after being time stamped;
And the super node verifies the uplink block data, and after the verification is passed, the super node and each consensus node respectively account for the successful data storage.
4. The marine-chain-based scientific-examination data sharing platform of claim 3, wherein the data requesting node in the coalition chain retrieves descriptive information of marine-scientific-examination data in the coalition chain; according to the address of the data storage node in the description information, sending data transaction request information to the data storage node, and the identity information of the data request node;
the data storage node receives the data transaction request information and then sends transaction authentication request information to the data request node;
after confirming the transaction authentication request information, the data request node sends transaction authentication confirmation information to the data storage node;
After receiving the transaction authentication confirmation information, the data storage node sends the encrypted ocean scientific investigation data to the data request node;
The data request node decrypts the received ocean data according to the private key of the data request node to obtain ocean scientific investigation data;
The data request node performs format verification on the decrypted marine scientific investigation data, and if the verification is correct, the data request node sends transaction confirmation information to the data storage node, and the data storage node sends feedback information to the data request node after receiving the confirmation information;
The data storage node issues the transaction record as block data to the alliance chain, and marks a time stamp on the block data, and after the super node verifies the transaction, the super node and each consensus node account for and broadcast the transaction to end.
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