CN117932697B - Block chain-based multi-mode intermodal one-system verification system and method - Google Patents
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Abstract
The invention relates to the technical field of block chain and data processing, in particular to a system and a method for multi-mode intermodal one-system verification based on block chain. Firstly, a dynamic distributed hash time lock algorithm is designed, a dynamic hash function is constructed, a time lock key is generated, and data are encrypted and decrypted. Then, a time-space coding mechanism is designed, and identifiers of data blocks are generated by combining time attributes and space attributes of data, so that a multidimensional data index structure is built, and cross-chain data are further inquired and verified. The invention solves the problem that the traditional block chain technology limits the real-time updating capability of data due to the characteristic that the data cannot be tampered; in the prior art, when data interoperation is performed between different blockchain platforms, the tracking, verifying and sharing processes of the data are complex and time-consuming, the data retrieval speed is low, and the access authority management is not flexible and fine enough.
Description
Technical Field
The invention relates to the technical field of block chain and data processing, in particular to a system and a method for multi-mode intermodal one-system verification based on block chain.
Background
In conventional blockchain technology, the non-tamper-ability of data is one of its most core characteristics, which ensures that data cannot be altered once written into the blockchain, providing extremely high security for the data. However, this also brings about difficulty in updating data in real time, and especially in application scenarios such as multi-mode intermodal—single system, where real-time data sharing and updating are required, how to realize real-time data updating and sharing while keeping data non-tamper-able becomes a technical problem to be solved.
In addition, with the widespread use of blockchain technology, the development of cross-chain technology has become an important direction of blockchain innovation. The cross-chain technology enables the interoperation of data and assets between different block chains, and greatly widens the application range of the block chain technology. However, the security and efficiency of cross-link data sharing become key factors restricting the development of the data sharing, and how to realize efficient cross-link data sharing and query on the basis of guaranteeing the data security is a problem to be solved in the prior art.
Chinese patent application No.: CN202111495494.1, publication date: 2022.06.28 discloses a block chain-based multi-type intermodal one-system verification system and method, wherein each segment of the multi-type intermodal corresponds to a segment block chain node, and the block chain node initiating the multi-type intermodal bill is connected with all other block chain link points in series to realize real-time intercommunication of information; the logistics information is distributed to different segmented block chain nodes through a block chain consensus mechanism, segmented block chain link points are used for confirming segmented logistics information of respective segments and linking logistics information of upstream and downstream linking segments, and the segmented logistics information is accumulated to a multi-type intermodal bill, so that multiparty confirmation of each party to different transport segments and uplink certification of the block chain nodes are guaranteed on the basis of the block chain multi-type intermodal bill, good trust relation of each node of the multi-type intermodal is facilitated to be established, unified documents of industry standard are formed through unified one piece, service linking and information sharing of each stage in the multi-type intermodal are facilitated to be realized, and cargo transfer efficiency is improved.
However, the above technology has at least the following technical problems: the traditional block chain technology provides data security assurance due to the characteristic that the data cannot be tampered, but also limits the real-time updating capability of the data, which is especially insufficient in application scenes in which the data needs to be updated frequently; the prior art faces efficiency and security challenges in cross-chain data sharing, especially when data interoperability between different blockchain platforms is involved, the tracking, verifying and sharing process of data tends to be complex and time-consuming, resulting in slow data retrieval speed and inflexible or inflexible access rights management.
Disclosure of Invention
The invention solves the problem that the traditional block chain technology has the characteristic of data non-falsification due to the provision of the block chain-based multi-mode intermodal one-system verification system and method, and provides the guarantee of data security, but also limits the real-time updating capability of the data, which is especially insufficient in the application scene of needing to frequently update the data; the prior art faces efficiency and security challenges in cross-chain data sharing, especially when data interoperability between different blockchain platforms is involved, the tracking, verifying and sharing process of data tends to be complex and time-consuming, resulting in slow data retrieval speed and inflexible or inflexible access rights management. The invention realizes safe real-time updating, high-efficiency cross-chain sharing and quick query verification of the block chain data, and solves the contradiction between the data non-falsifiability and the real-time updating requirement of the traditional block chain technology.
The invention provides a block chain-based multi-mode intermodal one-system verification system and a method thereof, which specifically comprise the following technical scheme:
the block chain-based multi-modal one-system verification system comprises the following parts:
The system comprises a hash generation module, a time lock key generation module, an encryption module, a decryption verification module, a space-time coding module, a data index module and a data storage module;
The hash generation module is used for constructing a dynamic hash function, introducing time sensitivity and generating a dynamic hash value, and is connected with the time lock key generation module and the space-time coding module in a data transmission mode;
The time lock key generation module is used for generating a time lock key by utilizing the dynamic hash value, the secret value and the locking time, and is connected with the encryption module in a data transmission mode;
the encryption module is used for encrypting the data by using the generated time lock key and generating a time lock certificate, and is connected with the decryption verification module and the data storage module in a data transmission mode;
The decryption verification module is used for decrypting the data by using the time lock key, verifying the integrity and timeliness of the data by using the time lock certification, and connecting the decryption verification module with the data storage module in a data transmission mode;
the space-time coding module is used for generating time-space coding of the data blocks based on the time stamps, the source chain identifiers and the space vectors, and is connected with the data index module in a data transmission mode;
The data index module is used for constructing a multidimensional data index structure by utilizing time-space coding, data content and security level, and is connected with the data storage module in a data transmission mode;
the data storage module is used for storing the encrypted data, the time lock evidence and the multidimensional data index structure.
The block chain-based multi-mode intermodal one-system verification method comprises the following steps:
s1, designing a dynamic distributed hash time lock algorithm, constructing a dynamic hash function, generating a time lock key, and encrypting and decrypting data;
s2, designing a time-space coding mechanism, generating identifiers of the data blocks, further constructing a multidimensional data index structure, and further inquiring and verifying cross-chain data.
The multi-system intermodal one-system verification system based on the block chain is applied to the multi-system intermodal one-system verification system based on the block chain.
Preferably, the S1 further specifically includes:
in constructing the dynamic hash function, a dynamic hash function based on time variable and data content is defined based on time sensitivity.
Preferably, the step S1 further includes:
a time lock key is generated using a dynamic hash function, the time lock key locking data prior to a predetermined point in time until unlocking when the predetermined point in time is reached or exceeded.
Preferably, the step S1 further includes:
Encrypting the data by using the generated time lock key, and generating a time lock certification; when the lock time is reached or exceeded, the data is decrypted using the time-lock key and the integrity and timeliness of the data is verified using the time-lock proof.
Preferably, the S2 further specifically includes:
A time-space coding mechanism is introduced to generate an identifier of a data block in combination with the time stamp of the data and the spatial properties of the data source chain.
Preferably, the step S2 further includes:
Based on the identifiers of the data blocks, a multidimensional data index structure is constructed, and the data is indexed and queried according to dimensions by utilizing the multidimensional data index structure.
Preferably, the S2 further specifically includes:
in the process of inquiring and verifying the cross-chain data, designing an inquiring process and a security verification method: the query process relies on the time-space coding of the query data block and the multidimensional data index structure to perform a matching query; the security verification then combines the operation of the time-space coding and the data content.
The technical scheme of the invention has the beneficial effects that:
1. The invention effectively enhances the safety of data through a dynamic hash function and a time locking mechanism; the dynamic hash function ensures that even under the condition of the same data content, the data hash values at different time points are different, thereby increasing the difficulty of data tampering; meanwhile, the application of the time lock key ensures that the data cannot be decrypted before the preset time, and further improves the safety in the data storage and transmission process.
2. The traditional blockchain technology is difficult to support real-time data update due to the non-tamperable characteristic, and the invention solves the problem by introducing a time-sensitive dynamic hash function, so that the data can be updated in real time while being kept non-tamperable, and the verifiability of supporting the data update is proved by a time lock.
3. The design of a time-space coding mechanism and a multidimensional data index structure enables cross-chain data sharing to be more efficient and flexible, the time-space coding is used for generating identifiers for each data block, the tracking and searching processes of data are simplified, and the multidimensional data index structure supports efficient data query according to different dimensions (such as time, source chains and the like), so that the query response speed is remarkably improved.
4. The invention opens up new possibility for the application of the blockchain technology in fields such as multi-mode intermodal one-system and the like by solving the contradiction between the non-tamper property of the blockchain data and the real-time update requirement; in the scenes of logistics, supply chain management, finance and the like which need high data security and real-time data updating, the application of the invention can greatly improve the efficiency and transparency of the business process.
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FIG. 1 is a block chain based multi-modal one-system verification system block diagram according to one embodiment of the present invention;
FIG. 2 is a flow chart of a method for block chain based multi-modal intermodal one-system verification in accordance with one embodiment of the present invention.
Detailed Description
In order to further illustrate the technical means and effects adopted by the present invention to achieve the preset purposes, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Referring to fig. 1, a blockchain-based multi-modal one-system verification system provided by an embodiment of the invention includes the following:
The system comprises a hash generation module, a time lock key generation module, an encryption module, a decryption verification module, a space-time coding module, a data index module and a data storage module;
the hash generation module is used for constructing a dynamic hash function, introducing time sensitivity, enabling a hash value to change along with time, and generating a dynamic hash value, wherein the hash generation module is connected with the time lock key generation module and the space-time coding module in a data transmission mode;
The time lock key generation module is used for generating a time lock key by utilizing the dynamic hash value, the secret value and the locking time, and is connected with the encryption module in a data transmission mode;
the encryption module is used for encrypting the data by using the generated time lock key and generating a time lock certificate so as to ensure that the data cannot be decrypted before the appointed time, and the encryption module is connected with the decryption verification module and the data storage module in a data transmission mode;
The decryption verification module is used for decrypting the data by using the time lock key, verifying the integrity and timeliness of the data by using the time lock certification, and connecting the decryption verification module with the data storage module in a data transmission mode;
The space-time coding module is used for generating a time-space code of each data block based on the time stamp, the source chain identification and the space vector, and the space-time coding module is connected with the data index module in a data transmission mode;
The data index module is used for constructing a multidimensional data index structure by utilizing time-space coding, data content and security level, and is connected with the data storage module in a data transmission mode;
The data storage module is used for storing the encrypted data, the time lock evidence and the multidimensional data index structure and providing support for data query and access.
Referring to fig. 2, a blockchain-based multi-intermodal one-system verification method according to an embodiment of the present invention includes the steps of:
s1, designing a dynamic distributed hash time lock algorithm, constructing a dynamic hash function, generating a time lock key, and encrypting and decrypting data;
In order to solve the contradiction between the non-tamper property of the block chain data and the real-time updating requirement and simultaneously ensure the safety and the effectiveness of the cross-chain data sharing, a dynamic distributed hash time locking algorithm is designed. In the blockchain technology, the non-tamperability of data is realized through a hash function, and a hash value is used as a unique identifier of the data.
First, the hash generation module builds a dynamic hash function whose output depends not only on the input data itself but also on the time variable. To introduce time sensitivity, the hash value is allowed to change over time, supporting verifiable updates of the data. To this end, a dynamic hash function based on time variables and data content is defined:
Wherein, Representing a dynamic hash function,/>Representing input data, i.e. raw information that needs to be hashed, including transaction data, contracts and agreements, authentication and audit records, etc./>, andIs the current timestamp,/>Representing string join operations,/>Is a standard hash function (e.g., SHA-256). By combining the data, the time stamp, the sine value of the time stamp and the logarithmic value of the time stamp plus one, a hash function which changes with time is constructed, and even the same data, different hash values can be generated at different time points, so that the real-time updating of the data is supported.
To implement a time-locking mechanism, a time-locking key is generated that is capable of locking data until a predetermined point in time is reached or exceeded, and is not unlocked. The time lock key generation module realizes the generation of the time lock key through the following formula:
Wherein, Is a time-locked key for encrypting data, which can be decrypted only after a specified point in time,/>Is a secret value used to add additional randomness and security in generating the key,/>Representing bitwise exclusive OR operations,/>Is a predetermined lock time, and after the specified data is encrypted, the data can be decrypted only after the predetermined lock time point is reached or exceeded. By combining the output of the dynamic hash function and the bitwise exclusive-or operation, a time-locked time-dependent key is generated, increasing security and introducing time sensitivity.
The encryption module then encrypts the data using the generated time-lock key and generates a time-lock proof that ensures that the data cannot be decrypted before the specified time. Encryption of data and generation of time lock proof are performed by the following formula:
Wherein, Representing encrypted data, encrypting with a time-locked key to ensure that the data cannot be accessed until a specified time,/>Is an encryption function, encrypts the original data using a time-locked key,Is a time lock proof, generated by combining a time lock key, a lock time, a cosine value of the lock time, and a square root of the lock time plus two. The above formula ensures that the data cannot be decrypted before the lock time without the correct key, while providing a way to verify the integrity and timeliness of the data after the lock time.
And when the locking time is reached or exceeded, the decryption verification module decrypts the data by using the time lock key, and verifies the integrity and timeliness of the data by using the time lock certification. The decryption and verification process is as follows:
Wherein, Is the decrypted data, the encrypted data is decrypted using the time-locked key,Is a decryption function, decrypting encrypted data using a time-locked key,/>Is a verification function for confirming whether the data is correctly unlocked after a specified time,/>Is the unlock time, representing the point in time at which decryption of the data is attempted.
The mechanism for updating the block chain data and sharing the cross-chain data not only solves the contradiction between the non-tamper property of the data and the real-time updating requirement, but also ensures the safety and the effectiveness of the cross-chain data sharing, and shows the innovation and the practical value in the application of the block chain technology.
S2, designing a time-space coding mechanism, generating identifiers of the data blocks, further constructing a multidimensional data index structure, and further inquiring and verifying cross-chain data.
The dynamic distributed hash time locking algorithm realizes the non-tamper property and real-time updating of data through a dynamic hash function and a time locking mechanism, and simultaneously ensures the safety and the effectiveness of cross-chain data sharing. However, there are limitations in terms of efficiency and query speed of processing large-scale cross-chain data, so that a cross-chain data processing algorithm is designed, a time-space coding mechanism and a multidimensional data index structure are introduced, and the large-scale cross-chain data is processed and verified.
By designing a time-space coding mechanism and introducing a time stamp and the space attribute of a source chain on the premise of keeping the data untampereable, the identifier of the data block is generated, so that the data security is enhanced, and the possibility is provided for quick retrieval and verification of the data. The data blocks are derived from various operations and transactions in the multi-modal intermodal process, including cargo transportation records, contract information, transaction credentials, authentication information, audit logs, and the like. The multidimensional data index structure enables efficient data query according to different dimensions (such as time, source chain and the like), and improves the query response speed.
Firstly, a space-time coding module introduces a time-space coding mechanism, and a unique identifier of each data block is generated by combining the time attribute and the space (namely source chain) attribute of the data, so that a security gap which can occur when the data is updated in real time and shared across chains in a dynamic distributed hash time locking algorithm is made up. The generation of the time-space coding depends on the time stamp of the data, the source chain identification and the independent space vector. The specific formula is as follows:
Wherein, An i-th instance representing a time-space encoding, which is a unique identifier that integrates time stamp, source chain identification, and space vector information, for encrypting and indexing cross-chain data blocks; /(I)Is a hash function for generating a unique and irreversible hash value of the data; /(I)Is a timestamp of a data block, representing a specific point in time when the ith data block is generated or recorded; /(I)A source chain identification, namely a blockchain identification of the source of the ith data block; /(I)Is a spatial vector, which is a vector dynamically generated according to the source chain of the ith data block, for enhancing the spatial dimension and complexity of coding; /(I)Is a complex function, dependent on the timestamp/>, of the data blockSource chain identification/>And space vector/>For increasing the computational complexity and data correlation of the time-space coding; constant/>To adjust the timestamp/>Influence, constant/>, in a space-time coding generation formulaFor adjusting source chain identity/>Weights in the encoding.
The data index module constructs a multidimensional data index structure responding to the query request in order to enable the data to be indexed and queried according to time, space and other relevant dimensions, and adopts the following formula:
Wherein, An ith instance representing a multidimensional data index, constructed from time-space coding, a data index structure capable of supporting efficient queries in time, space, and other dimensions; /(I)、/>And/>Respectively constructing a multidimensional data index structure, processing data content and a function of security level, and designing construction and query efficiency for optimizing the data index; /(I)Is the content of the ith data block; /(I)Is the security level of the ith data block, indicating the sensitivity or importance of the data; constant/>In the construction formula for adjusting the multidimensional data index structure, the data content/>And security level/>Is a combined effect of (2); constant/>Directly influencing a baseline level in a multi-dimensional data index structure construction formula, and adding an initial threshold value for the index; constant/>Is a hash valueA baseline shift is added, so that the adjustment capability of the algorithm on the sensitivity of the data content is improved; constant/>Adjusted security level/>Exponential influence during the calculation.
In order to realize the inquiry and verification of the cross-chain data, an inquiry process and a security verification method are designed. The query process relies on the time-space coding of the query data block and the multidimensional data index structure to carry out matching query, so that the efficiency and the accuracy of data query are ensured; security verification combines the complex operations of time-space coding and data content to verify the security and integrity of the data. The security verification formula is:
Wherein, Representing a security verification result for confirming the integrity and security of the data; /(I)Representing bitwise exclusive OR operation for enhancing the complexity of the security verification formula; /(I)And/>The weight and the proportion of the operation in the formula are adjusted by a preset constant, and can be set according to specific application scenes and safety requirements. The security verification formula further strengthens the security of the data in the unlocking and verification processes by combining exclusive-or operation, exponential and modular operation, and ensures that the authenticity and the integrity of the data are fully ensured even in a complex cross-chain environment.
Data representation in a multi-dimensional data index structureAnd spatio-temporal encoding of data/>And other security level parameters are used for verifying the security of the data item together, so that the data is ensured to be subjected to strict security check before being queried and accessed, and meanwhile, the multi-dimensional data index structure is fused into a formula, so that the effect and the importance of the data in the multi-dimensional data index structure are enhanced.
In summary, the blockchain-based multi-modal one-system verification system and method are completed.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. A blockchain-based multi-modal one-system verification system, comprising:
The system comprises a hash generation module, a time lock key generation module, an encryption module, a decryption verification module, a space-time coding module, a data index module and a data storage module;
The hash generation module is used for constructing a dynamic hash function, introducing time sensitivity, defining the dynamic hash function based on time variable and data content, generating a dynamic hash value, and connecting the hash generation module with the time lock key generation module and the space-time coding module in a data transmission mode;
The time lock key generation module is used for generating a time lock key by utilizing the dynamic hash value, the secret value and the locking time; the time lock key can lock data before a preset time point, and can not be unlocked until the preset time point is reached or exceeded; the time lock key generation module is connected with the encryption module in a data transmission mode;
the encryption module is used for encrypting the data by using the generated time lock key and generating a time lock certificate, and is connected with the decryption verification module and the data storage module in a data transmission mode;
The decryption verification module is used for decrypting the data by using the time lock key, verifying the integrity and timeliness of the data by using the time lock certification, and connecting the decryption verification module with the data storage module in a data transmission mode;
The space-time coding module is used for generating time-space coding of the data blocks based on the time stamp, the source chain identification and the space vector, and further generating identifiers of the data blocks; the space vector is a vector dynamically generated according to a source chain of the data block; the data blocks are derived from various operations and transactions in the multi-modal intermodal process; the space-time coding module is connected with the data index module in a data transmission mode;
The data index module is used for constructing a multi-dimensional data index structure by utilizing time-space coding, data content and security level, and indexing and inquiring data by utilizing the multi-dimensional data index structure according to time, space and dimension; the data index module is connected with the data storage module in a data transmission mode by utilizing the data representation and the time-space coding of the data and other security level parameters in the multidimensional data index structure to finish the verification of the security of the data item;
the data storage module is used for storing the encrypted data, the time lock evidence and the multidimensional data index structure.
2. The block chain-based multi-modal one-system verification method applied to the block chain-based multi-modal one-system verification system as claimed in claim 1 is characterized by comprising the following steps:
s1, designing a dynamic distributed hash time lock algorithm, constructing a dynamic hash function, generating a time lock key, and encrypting and decrypting data;
s2, designing a time-space coding mechanism, generating identifiers of the data blocks, further constructing a multidimensional data index structure, and further inquiring and verifying cross-chain data.
3. The blockchain-based multi-intermodal one-system verification method of claim 2, wherein S1 specifically comprises:
in constructing the dynamic hash function, a dynamic hash function based on time variable and data content is defined based on time sensitivity.
4. The blockchain-based multi-intermodal one-system verification method of claim 3, wherein S1 specifically comprises:
a time lock key is generated using a dynamic hash function, the time lock key locking data prior to a predetermined point in time until unlocking when the predetermined point in time is reached or exceeded.
5. The blockchain-based multi-intermodal one-system verification method of claim 4, wherein S1 specifically comprises:
Encrypting the data by using the generated time lock key, and generating a time lock certification; when the lock time is reached or exceeded, the data is decrypted using the time-lock key and the integrity and timeliness of the data is verified using the time-lock proof.
6. The blockchain-based multi-intermodal one-system verification method of claim 2, wherein S2 specifically comprises:
A time-space coding mechanism is introduced to generate an identifier of a data block in combination with the time stamp of the data and the spatial properties of the data source chain.
7. The blockchain-based multi-intermodal one-system verification method of claim 6, wherein S2 specifically comprises:
Based on the identifiers of the data blocks, a multidimensional data index structure is constructed, and the data is indexed and queried according to dimensions by utilizing the multidimensional data index structure.
8. The blockchain-based multi-intermodal one-system verification method of claim 2, wherein S2 specifically comprises:
in the process of inquiring and verifying the cross-chain data, designing an inquiring process and a security verification method: the query process relies on the time-space coding of the query data block and the multidimensional data index structure to perform a matching query; the security verification then combines the operation of the time-space coding and the data content.
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