CN112837062A - Data fingerprint transaction management system and tracing method based on block chain-trusted computing - Google Patents
Data fingerprint transaction management system and tracing method based on block chain-trusted computing Download PDFInfo
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Abstract
The invention discloses a data fingerprint transaction management system and a tracing method based on a block chain-trusted computing, and belongs to the field of block chain-trusted computing, data fingerprint security transaction and copyright protection. The invention is based on the block chain-trusted computing technology, utilizes a facultative plain public key encryption algorithm to distinguish privacy and public information of source data, encrypts uplink to prevent tampering, stores all data on the block chain and supports privileged access of corresponding authorized roles. And the decoding module can compare the code reverse-pushing with the code before uplink so as to easily trace the source. Compared with the prior art, the invention mainly solves the problems of unfairness of a transaction platform, easy attack of a single-point center, lack of privacy, opaque information of two transaction parties, unfairness of transaction, complicated tracing steps and the like, and increases a facultative plain public key encryption algorithm for improving the security of transaction, and has simple process and no privacy information leakage.
Description
Technical Field
The invention relates to a data fingerprint transaction management system and a tracing method based on a block chain-trusted computing, and belongs to the field of block chain-trusted computing, data fingerprint security transaction and copyright protection.
Background
As an important branch of information hiding, data fingerprints are mainly used for copyright protection, and the research of the data fingerprints has important significance; the digital fingerprint is obtained by embedding different symbolic identification codes, namely fingerprints, into a digital medium by using a digital watermarking technology and then distributing the digital medium embedded with the fingerprints to users; after the distributor finds out the piracy, the distributor can determine the source of illegal copying by extracting the fingerprint in the pirated product, and prosecute the pirate, thereby playing a role in copyright protection. The electronic data and the corresponding 'data fingerprint' certificate can effectively prove the integrity and the generation time of the electronic data, and can better support the anti-repudiation of the data, so that the parties involved in the transaction can not deny the occurrence of the behaviors. To a certain extent, the distrust of consumers to the trading system in China is caused, the trust crisis is caused, and the tragedy is particularly a tripartite in the construction and development of honest social work in China.
The prior data transaction traceability platform only protects the benefits of buyers unilaterally, but assumes that a seller is a dishonest party, hides a data source and infringes intellectual property, but does not consider that the buyer can also be the dishonest party and unilaterally does not recognize the account, so that the benefits of a data provider are damaged by cheating with compensation air promised by the seller, the safety of the buyers and the sellers cannot be guaranteed, and even the public credibility of the transaction platform is lost. Therefore, there is a need to design a new block chain-based high-security encrypted transaction tracing management system and method to solve the above mentioned technical problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides a data fingerprint transaction management system and a tracing method based on block chain-trusted computing, which have the characteristics of decentralized, non-falsification and privacy protection of the block chain.
The technical scheme provided by the invention is as follows:
a data fingerprint transaction management system and a tracing method based on block chain-trusted computing comprise a processing holder, a source information acquisition module, a role verification module, a credit rating module, a credit management module, a storage module, a tracing module, an encryption/decryption module, an interactive communication module, a block chain main chain and a trusted supervision signal module; the processing holder is respectively in bidirectional data connection with the source information acquisition module, the role verification module, the credit rating module, the credit management module, the storage module, the source tracing module, the encryption/decryption module and the interactive communication module; the input end of the interactive communication module is in bidirectional data connection with the encryption/decryption module, the source tracing module and the storage module; the interactive communication module is in bidirectional data connection with a block chain main chain, and the block chain main chain is connected with the trusted supervision signal module; the one-way output of partial transaction data information, transaction information, company or personal information of a provider at the source end is connected with the input end of the source information acquisition module;
the information of the interactive information module and the information of the processing holder are encrypted by using facultative plain public key encryption in the encryption and decryption module, so that the interaction is safer; the reputation score is calculated by adopting an Eigen trust algorithm in a credit rating module; the Eigen Trust is in bidirectional connection with the processing holder, receives information and generates a global Trust value for a participant; trust values are recorded on the desk and relate to subsequent operations.
Furthermore, the encryption and decryption module comprises a facultative element state public key encryption submodule and a ciphertext analysis and decryption submodule, and the facultative element state public key encryption submodule comprises a generation encryption module and a ciphertext release module.
Furthermore, the generating and encrypting module adopts a facultative plain public key encryption algorithm, the generating and encrypting module is mainly used for encrypting corresponding unique data generated by a product, the encoded data is divided into a private part and a non-private part, the private part can be encrypted into a ciphertext, the privacy of the data is ensured, the data cannot be easily changed by people, meanwhile, specific information can be transparentized, the ciphertext issuing module packs the encrypted ciphertext data according to a format specified by a corresponding protocol contract and issues the packed message after adding a data signature.
Furthermore, the source information acquisition module is used for packaging and coding part of transaction data information, transaction information, company to which a provider belongs or personal information and sending the information to the processing holder for further analysis.
Furthermore, the credit rating module of the invention adopts an Eigen trust algorithm to calculate the reputation score for collecting and evaluating the historical credit of the user, so that the historical credit is recorded on the case and influences the subsequent operation.
Further, the information management module is used for collecting, analyzing and feeding back order content generated based on transaction and tracing management in the block chain.
Furthermore, the traceability module is used for analyzing the data processed by the encryption and decryption module, matching and tracing the source of the product, and obtaining partial transaction data information, transaction information, company or personal information to which the provider belongs.
Further, the facultative plain public key encryption algorithm of the present invention involves an encryption function Epk and a decryption function Dpr, whereinpkAndprrespectively a public key and a private key; given a prime number, Epk (x), no one can find x in polynomial time; furthermore, the algorithm has the following characteristics:
Epk(x + y) = Epk(x) +hEpk(y) mod N 2，
where x and y are plaintext messages; h is the operation of the facultative element state,Nis the encrypted group size;
for a given prime number c and ciphertext Epk(x) Having E ofpk(c·x)=Epk(X)c Mod N 2；
Its cryptographic function is used so that any additional information about the plaintext is not revealed.
Furthermore, the invention calculates the local area by the holder processing each timeTrust score valueV ijk (ii) a Each transaction from provider i to consumer jkAn information quality value of (1);
consumersjTo the provideriThe reputation of the contribution is R ij ：
The comprehensive sound of the provider i is known as R i ：
The transaction trust score is stored in the storage module through the processing cradle head; the integrity and transparency provided by the blockchain solve two major feature trust security problems and can affect subsequent transaction operations; the algorithm can ensure that the current trust values of both transaction parties cannot be calculated by a single party and are resident on the self, and the calculation of the global trust scores of any transaction parties cannot be interfered by any other transaction points and is only related to the self.
The invention has the beneficial effects that:
(1) through the role verification module, the credit rating module and the interactive communication module, a distributed trusted data transaction and traceability transaction system framework can be established, enough capacity can be possessed to ensure the whole distributed data transaction and traceability system, a producer and a consumer in a transaction platform can directly communicate, the complex and tedious multi-level transaction flow of the existing transaction platform is simplified, the right of a buyer and a seller in point-to-point education can be guaranteed through the encryption and decryption module, the seller is not afraid of leakage of privacy information and endless repudiation of the buyer, and the buyer is not afraid of property loss caused by goods not to a board.
(2) Through credit rating module and information management module, buyer and seller's credit value can carry out reasonable rating through Eigen trust algorithm according to historical transaction information to directly influence subsequent transaction operation, secondly, carry out data record with tamper-proofing and distributed mode on the block chain through tracing to the source module and storage module, fully guaranteed the reliable safe transaction record of data, can carry out the source of product to trace back fast conveniently simultaneously, and the most important source data: partial transaction data information, transaction information, company or personal information of a provider are captured and processed by the source information acquisition module, and all transaction data are recorded in a tamper-proof and distributed accounting mode in the whole trusted transaction framework, so that the safety and consistency of the data are guaranteed.
Drawings
FIG. 1 is a schematic diagram of the overall flow of the system of the present invention;
fig. 2 is a schematic diagram of an encryption/decryption module system according to the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and embodiments, without however restricting the scope of the invention thereto.
A data fingerprint transaction management system and a tracing method based on block chain-trusted computing comprise a processing holder, a source information acquisition module, a role verification module, a credit rating module, a credit management module, a storage module, a tracing module, an encryption/decryption module, an interactive communication module, a block chain main chain and a trusted supervision signal module;
the processing holder is respectively in bidirectional data connection with the source information acquisition module, the role verification module, the credit rating module, the credit management module, the storage module, the source tracing module, the encryption/decryption module and the interactive communication module; the input end of the processing cradle head is connected with the output end of the source information acquisition module, the output end of the processing cradle head is connected with the input end of the source information acquisition module, the input end of the processing cradle head is connected with the output end of the role verification module, the output end of the processing cradle head is connected with the input end of the role verification module, the input end of the processing cradle head is connected with the output end of the credit rating module, the output end of the processing cradle head is connected with the input end of the credit rating module, the input end of the processing cradle head is connected with the output end of the credit management module, the output end of the processing cradle head is connected with the input end of the credit management module, the input end of the processing cradle head is connected with the output end of the storage module, and the output end of the processing cradle head is, the input end of the processing holder is connected with the output end of the tracing module, the output end of the processing holder is connected with the person-conveying end of the tracing module, the input end of the processing holder is connected with the output end of the encryption/decryption module, and the output end of the processing holder is connected with the person-conveying end of the encryption/decryption module.
The input end of the interactive communication module is in bidirectional data connection with the encryption/decryption module, the source tracing module and the storage module; the interactive communication module is in bidirectional data connection with a block chain main chain, and the block chain main chain is connected with the trusted supervision signal module; the one-way output of partial transaction data information, transaction information, company or personal information of a provider at the source end is connected with the input end of the source information acquisition module;
the information of the interactive information module and the information of the processing holder are encrypted by using facultative plain public key encryption in the encryption and decryption module, so that the interaction is safer; the reputation score is calculated by adopting an Eigen trust algorithm in a credit rating module; the Eigen Trust is in bidirectional connection with the processing holder, receives information and generates a global Trust value for a participant; trust values are recorded on the desk and relate to subsequent operations.
In this embodiment, the encryption and decryption module includes a facultative plain public key encryption submodule and a ciphertext analysis and decryption submodule, and the facultative plain public key encryption submodule includes a generation encryption module and a ciphertext publishing module.
The generation encryption module is mainly used for encrypting corresponding unique data generated by a product, the encoded data is divided into a privacy part and a non-privacy part, the privacy part can be encrypted into a ciphertext function, the privacy of the data is guaranteed, the data cannot be easily changed by people, meanwhile, specific information can be transparentized, and the ciphertext issuing module packs the encrypted ciphertext data according to a format specified by a corresponding protocol contract and issues the packed message after adding a data signature.
The source information acquisition module is used for packaging and coding part of transaction data information, transaction information, company of a provider or personal information and transmitting the packaged and coded information to the processing holder for further analysis.
The credit rating module of the embodiment adopts an Eigen trust algorithm to calculate the reputation score for collecting and evaluating the historical credit of the user, so that the historical credit is recorded on the case and subsequent operations are influenced.
The information management module in this embodiment is used for collecting, analyzing, and feeding back order content generated based on transaction and traceability management in a block chain.
The tracing module is used for analyzing the data processed by the encryption and decryption module, matching and tracing the source of the product, and acquiring partial transaction data information, transaction information, company or personal information to which the provider belongs.
The transaction trust score is stored in the storage module through the processing cradle head; the integrity and transparency provided by the blockchain solve two major feature trust security problems and can affect subsequent transaction operations; the algorithm can ensure that the current trust values of both transaction parties cannot be calculated by a single party and are resident on the self, and the calculation of the global trust scores of any transaction parties cannot be interfered by any other transaction points and is only related to the self.
The block chain-trusted computing-based data fingerprint transaction management system and the tracing method in the embodiment specifically include the following steps:
a. firstly, a user logs in an account, and then retrieves a product according to a required condition;
b. performing point-to-point secure transaction in the transaction framework platform;
c. the product with doubtful meaning can be safely tracked through the source tracing module.
The method of the embodiment establishes a distributed trusted data transaction and traceability transaction system framework, which has enough capacity to ensure the whole distributed data transaction and traceability system, so that producers and consumers in a transaction platform can communicate directly, the complex and tedious multi-level transaction process of the existing transaction platform is simplified, and through an encryption and decryption module, rights and benefits of buyers and sellers in point-to-point education can be guaranteed, sellers are not afraid of leakage of privacy information and endless repudiation of buyers, buyers are not afraid of property loss caused by goods not being subjected to boards, in addition, through a credit rating module and an information management module, credit values of the buyers and sellers can be reasonably rated according to historical transaction information by utilizing an Eigen trust algorithm, so that subsequent transaction operations are directly influenced, and secondly, data recording is carried out on a block chain in a tamper-proof and distributed manner through the traceability module and a storage module, the reliable safe transaction record of data has fully been guaranteed, can carry out the source of product to trace back fast conveniently simultaneously, and the most important source data: partial transaction data information, transaction information, company or personal information of a provider are captured and processed by the source information acquisition module, and all transaction data are recorded in a tamper-proof and distributed accounting mode in the whole trusted transaction framework, so that the safety and consistency of the data are guaranteed.
The related modules involved in the system are all hardware system modules or functional modules combining computer software programs or protocols with hardware in the prior art, and the computer software programs or the protocols involved in the functional modules are all known in the technology of persons skilled in the art, and are not improvements of the system; the improvement of the system is the interaction relation or the connection relation among all the modules, namely the integral structure of the system is improved, so as to solve the corresponding technical problems to be solved by the system.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A data fingerprint transaction management system and a tracing method based on block chain-trusted computing are characterized by comprising a processing holder, a source information acquisition module, a role verification module, a credit rating module, a credit management module, a storage module, a tracing module, an encryption/decryption module, an interactive communication module, a block chain main chain and a trusted supervision signal module;
the processing holder is respectively in bidirectional data connection with the source information acquisition module, the role verification module, the credit rating module, the credit management module, the storage module, the source tracing module, the encryption/decryption module and the interactive communication module;
the interactive communication module is in bidirectional data connection with the encryption/decryption module, the source tracing module and the storage module;
the interactive communication module is in bidirectional data connection with a block chain main chain, and the block chain main chain is connected with the trusted supervision signal module; the one-way output of partial transaction data information, transaction information, company or personal information of a provider at the source end is connected with the input end of the source information acquisition module;
the information of the interactive information module and the information of the processing holder are encrypted by using facultative plain public key encryption in the encryption and decryption module, so that the interaction is safer; the reputation score is calculated by adopting an Eigen trust algorithm in a credit rating module; the Eigen Trust is in bidirectional connection with the processing holder, receives information and generates a global Trust value for a participant; trust values are recorded on the desk and relate to subsequent operations.
2. The system and the method for managing the data fingerprint transaction based on the blockchain-trusted computing as claimed in claim 1, wherein: the encryption and decryption module comprises a facultative plain public key encryption submodule and a ciphertext analysis and decryption submodule, and the facultative plain public key encryption submodule comprises a generation encryption module and a ciphertext release module.
3. The system and the method for managing the data fingerprint transaction based on the blockchain-trusted computing as claimed in claim 2, wherein: the generating and encrypting module adopts a facultative plain public key encryption algorithm, is mainly used for encrypting corresponding unique data generated by a product, divides the encoded data into a privacy part and a non-privacy part, has the function of encrypting the privacy part into a ciphertext, ensures the privacy of the data, ensures that the data cannot be easily changed by people, and also can transparentize specific information, and the ciphertext issuing module packs the encrypted ciphertext data according to a format specified by a corresponding protocol contract and issues the packed message after adding a data signature.
4. The system and the method for managing the data fingerprint transaction based on the blockchain-trusted computing as claimed in claim 1, wherein: the source information acquisition module is used for packaging and coding part of transaction data information, transaction information, companies to which the providers belong or personal information and sending the packaged and coded information to the processing holder for further analysis.
5. The system and the method for managing the data fingerprint transaction based on the blockchain-trusted computing as claimed in claim 1, wherein: the credit rating module adopts an Eigen trust algorithm to calculate the reputation score for collecting and evaluating the historical credit of the user, so that the historical credit is recorded on the case and the subsequent operation is influenced.
6. The system and the method for managing the data fingerprint transaction based on the blockchain-trusted computing as claimed in claim 1, wherein: and the information management module is used for collecting, analyzing and feeding back order content generated based on transaction and tracing management in the block chain.
7. The system and the method for managing the data fingerprint transaction based on the blockchain-trusted computing as claimed in claim 1, wherein: the source tracing module is used for analyzing the data processed by the encryption and decryption module, matching and tracing the source of the product, and acquiring partial transaction data information, transaction information, company or personal information to which the provider belongs.
8. The blockchain-trusted computing based data fingerprint transaction management system and tracing method according to claim 1, wherein the facultative plain public key encryption feature isThe method comprises the following steps: the algorithm involves an encryption function Epk and a decryption function Dpr, whereinpkAndprrespectively a public key and a private key; given a prime number, Epk (x), no one can find x in polynomial time; furthermore, the algorithm has the following characteristics:
Epk(x + y) = Epk(x) +hEpk(y) mod N 2，
where x and y are plaintext messages; h is the operation of the facultative element state,Nis the encrypted group size;
for a given prime number c and ciphertext Epk(x) Having E ofpk(c·x)=Epk(X)c Mod N 2；
Its cryptographic function is used so that any additional information about the plaintext is not revealed.
9. The system and the method for managing the data fingerprint transaction based on the blockchain-trusted computing as claimed in claim 1, wherein: calculating a local trust score value for each pan-tilt processingV ijk (ii) a Each transaction from provider i to consumer jkAn information quality value of (1);
consumersjTo the provideriThe reputation of the contribution is R ij ：
The comprehensive sound of the provider i is known as R i ：
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