CN108924130B - Block data verification method, device, equipment and storage medium - Google Patents
Block data verification method, device, equipment and storage medium Download PDFInfo
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- CN108924130B CN108924130B CN201810709885.0A CN201810709885A CN108924130B CN 108924130 B CN108924130 B CN 108924130B CN 201810709885 A CN201810709885 A CN 201810709885A CN 108924130 B CN108924130 B CN 108924130B
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Abstract
The embodiment of the invention discloses a method, a device, equipment and a storage medium for verifying block data. Wherein, the method comprises the following steps: receiving block data sent by a block generation node in a block chain system; and verifying the block data according to the transaction attribute information associated with the block data, and sending verification feedback to the block generation node. According to the technical scheme of the embodiment of the invention, the authenticity verification of the block data is realized through the transaction attribute information associated with the block data in the node, the diversity of block data verification in the block chain system is increased, the possibility that the block generation node maliciously generates the transaction record in the block data is reduced, and the authenticity of the block data recorded in the block chain is improved.
Description
Technical Field
The embodiment of the invention relates to the field of block chain data processing, in particular to a verification method, a verification device, verification equipment and a storage medium of block data.
Background
The blockchain is a novel application mode of computer technologies such as distributed data storage, point-to-point transmission, a consensus mechanism and an encryption algorithm, and mainly solves the trust and safety problems among strange nodes. The common knowledge mechanism is an important component of the blockchain technology, and the block generation right is obtained by the nodes based on the common knowledge mechanism. The consensus mechanism mainly includes a mining-based consensus algorithm, such as a mechanism for obtaining block generation rights based on competition, such as a Proof of Work (POW) and a Proof of interest (POS), and a non-mining-based consensus algorithm, such as a Byzantine Fault Tolerance mechanism (BFT) and a Practical Byzantine Fault Tolerance mechanism (PBFT), such as a mechanism for obtaining block generation rights based on voting.
At present, in a non-mining consensus mechanism, a block chain system directly delivers transaction requests within a certain time or a certain number to a node currently having a block generation right; the block generating node processes the transaction request to form a block, and sends the block data to other nodes, namely the block recording node, and the other nodes perform the same processing process to verify whether the processing result is consistent with the block data, if so, the block is approved and added into the block chain, otherwise, the block is not approved and discarded.
In the prior art, the verification of the block data is only to verify that the data is not modified when the transaction data of the node is written into the block, and the block passing the consensus is added into the block chain, but the authenticity verification of the transaction data is lacked, so that the block generation node maliciously generates the transaction data.
Disclosure of Invention
The embodiment of the invention provides a method, a device, equipment and a storage medium for verifying block data, which are used for verifying the authenticity of the block data and reducing the possibility that a block generation node maliciously generates transaction data.
In a first aspect, an embodiment of the present invention provides a method for verifying block data, where the method includes:
receiving block data sent by a block generation node in a block chain system;
and verifying the block data according to the transaction attribute information associated with the block data, and sending verification feedback to the block generation node.
In a second aspect, an embodiment of the present invention provides a method for verifying block data, where the method includes:
generating block data according to a transaction record of a node to be verified in a block chain system, wherein the node to be verified is any node in the block chain system;
and sending the block data to an associated node of the node to be verified so that the associated node verifies the block data according to associated transaction attribute information.
In a third aspect, an embodiment of the present invention provides an apparatus for verifying block data, where the apparatus includes:
the block receiving module is used for receiving block data sent by a block generating node in a block chain system;
and the block verification module is used for verifying the block data according to the transaction attribute information associated with the block data and sending verification feedback to the block generation node.
In a fourth aspect, an embodiment of the present invention provides an apparatus for verifying block data, where the apparatus includes:
the block generation module is used for generating block data according to the transaction record of a node to be verified in a block chain system, wherein the node to be verified is any node in the block chain system;
and the first block sending module is used for sending the block data to the associated node of the node to be verified so that the associated node verifies the block data according to the associated transaction attribute information.
In a fifth aspect, an embodiment of the present invention provides an apparatus, where the apparatus includes:
one or more processors;
storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors implement the method for verifying block data according to the first aspect.
In a sixth aspect, an embodiment of the present invention provides an apparatus, where the apparatus includes:
one or more processors;
storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors implement the method for verifying block data described in the second aspect.
In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for verifying block data in the first aspect.
In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for verifying block data described in the second aspect.
According to the verification method, device, equipment and storage medium of the block data provided by the embodiment of the invention, the authenticity verification of the block data is realized through the transaction attribute information associated with the block data in the nodes, the diversity of block data verification in a block chain system is increased, the possibility that the block generation nodes maliciously generate transaction records in the block data is reduced, and the authenticity of the block data recorded in the block chain is improved.
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Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1A is a flowchart of a block data verification method according to an embodiment of the present invention;
fig. 1B is a schematic architecture diagram of a block chain system in a method according to an embodiment of the present invention;
fig. 1C is a flowchart illustrating a method for verifying block data according to transaction attribute information associated with the block data in a method according to an embodiment of the present invention;
fig. 2 is a flowchart of a block data verification method according to a second embodiment of the present invention;
fig. 3 is a flowchart of a block data verification method according to a third embodiment of the present invention;
fig. 4 is a flowchart of a block data verification method according to a fourth embodiment of the present invention;
fig. 5 is a flowchart of a method for verifying block data interacted between nodes in a blockchain system according to a fifth embodiment of the present invention;
fig. 6 is a flowchart of a verification method for block data applied to a specific blockchain system according to a sixth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a block data verification apparatus according to a seventh embodiment of the present invention;
fig. 8 is a schematic structural diagram of a block data verification apparatus according to an eighth embodiment of the present invention;
fig. 9 is a schematic structural diagram of an apparatus according to a ninth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1A is a flowchart of a block data verification method according to an embodiment of the present invention, where the embodiment is applicable to a block recording node of any blockchain system, a blockchain may be a public chain, a federation chain, or a private chain, the blockchain system generally includes a plurality of nodes, each node obtains a block generation right based on a consensus mechanism to be a block generation node, and the block recording node is another node except the block generation node in the blockchain system. The scheme of the embodiment of the invention can be applied to the block processing process of how to verify the authenticity of the block data. The verification method for block data provided in this embodiment may be implemented by the verification apparatus for block data in a block recording node of a blockchain system provided in this embodiment of the present invention, where the verification apparatus may be implemented in a software and/or hardware manner and integrated in a computing device carrying the nodes of the blockchain system. Specifically, referring to fig. 1A, the method may include the steps of:
s110, receiving block data sent by a block generation node in the block chain system.
The blockchain system is a brand new distributed infrastructure and computing mode which utilizes a blockchain data structure to verify and store data, utilizes a distributed node consensus algorithm to generate and update data, utilizes a cryptographic mode to ensure the safety of data transmission and access, and utilizes an intelligent contract composed of automated script codes to program and operate data. The blockchain in this embodiment may also be a public chain based intelligent contract or Decentralized Application (DAPP) and tokens are issued in the blockchain. Optionally, the blockchain system may include a plurality of nodes, each node processes its corresponding transaction data, and when a specific node in each node needs to upload its transaction data to the blockchain for storage, each node in the blockchain may perform corresponding blockchain processing by sending a corresponding transaction request. The specific node in the blockchain system, which needs to upload the transaction data of the specific node to the blockchain, is a node to be verified in the blockchain system, and optionally, the node to be verified may be any node in the blockchain system. Specifically, the transaction record of the node to be verified is self transaction data which needs to be uploaded to the block chain by the node.
Specifically, the block generation node in this embodiment processes the transaction request corresponding to the node to be verified, generates corresponding block data, and sends the corresponding block data to the block recording node of the block chain system for verification. The block generation node may be determined by each node taking block generation weights based on a consensus mechanism in the block chain. Preferably, in this embodiment, each node in the block chain obtains the block generation weight based on a non-mining consensus algorithm, for example, the block generation node is determined by election, and the other nodes are used as the block recording nodes to verify the generated block data.
Optionally, the verification of the generated block data in the blockchain system is performed by a block recording node in the blockchain system, and the block recording node may receive the block data sent by the block generating node, and then verify the block data subsequently.
Optionally, before the block record node receives the corresponding block data, each node in the block chain system broadcasts its own transaction record in the block chain in advance, and attaches its own node identifier, that is, each transaction record corresponds to a specific node identifier, and each transaction record includes a corresponding serial number, and when other nodes in the block chain receive the broadcasted transaction record, they store it in their own transaction storage area. That is, the transaction storage area of each node in the blockchain system stores each transaction record processed by all other nodes in the blockchain system in advance according to the corresponding node identifier.
S120, verifying the block data according to the transaction attribute information associated with the block data, and sending verification feedback to the block generation node.
The transaction attribute information is transaction information pre-written in a local cache or a database by each node in the blockchain system according to transaction data correspondingly processed by the node, may be initial transaction information related to the transaction data processed by each node, and may also include basic information such as an upper limit value and a lower limit value of the transaction data of the corresponding node. Optionally, as shown in fig. 1B, in the present embodiment, a blockchain platform 20 is configured in addition to the blockchain system 10 including each node 11, and the blockchain platform may interact with each node in the blockchain system. Specifically, after each node in the blockchain system locally stores corresponding transaction attribute information, the blockchain platform may determine the relevance of each node according to the transaction attribute information of each node, and determine the relevance node of each node in advance, where the relevance node may include a blockchain generation node. For example, the blockchain platform may perform cluster analysis on the transaction attribute information of each node to obtain an associated node of each node. Optionally, when the transaction attribute information of the blockchain system node is changed, the blockchain platform may update the associated node of each node in time according to the changed transaction attribute information. The related transaction attribute information can be determined by the related node of the node to be verified corresponding to the transaction record in the block data. Preferably, in this embodiment, when the block generating node sends the block data, the block data may be sent only to the associated node of the node to be verified, the associated node of the node to be verified receives the block data, and performs a subsequent block data verification process, and meanwhile, the block generating node further needs to send the block data to the node to be verified in the block recording node for self verification, that is, only the block chain system node including the node to be verified and the associated node corresponding to the node to be verified performs consensus on the block data of the node to be verified.
Optionally, when the verification process of the block data is executed, the block recording node receives the block data sent by the block generating node, first verifies the validity of the block data according to the prior art, each block recording node can verify the validity of the block data by using corresponding hash operation, when the verification is passed, the block recording node determines the verification correctness of the corresponding transaction record stored in the transaction storage area of the block recording node according to the node identifier and the serial number corresponding to the transaction record in the block data, verifies the authenticity of the transaction record in the block data by combining with the associated transaction attribute information locally stored in the associated node of the node to be verified in the block recording node, and sends the verification result to the block generating node for verification feedback.
Optionally, as shown in fig. 1C, verifying the tile data according to the transaction attribute information associated with the tile data may specifically include:
and S121, performing initial verification on the transaction result in the block data according to an initial verification algorithm.
Specifically, the transaction result is a transaction record obtained by performing hash operation encryption on the block data, and the initial verification algorithm may be an algorithm for verifying a decrypted hash result in the block data in the prior art. Optionally, when receiving the block data sent by the block generation node, the to-be-verified node and the associated node in the block recording node may first decrypt the encrypted hash result in the block data by using the public key of the block generation node to obtain a decrypted hash result, then perform hash operation on the multiple transaction records in the block data, compare the hash result obtained by the operation with the decrypted hash result in the block data, and if the hash result is consistent with the hash result, consider that the block data is sent by the block generation node and has not been tampered in the transmission process.
And S122, determining the locally stored corresponding transaction record and the associated transaction attribute information according to the node identifier and the serial number corresponding to the transaction record in the block data, and verifying the correctness and the authenticity of the transaction record in the block data.
Specifically, the block recording node performs initial verification on the transaction result in the block data, and after the verification is passed, the correctness and the authenticity of the transaction record in the block data need to be further verified. The block recording node can determine the transaction records of the to-be-verified node in the block recording node and the to-be-verified node locally stored in the transaction storage area of the associated node according to the node identifier and the serial number corresponding to the transaction record in the block data, and the transaction attribute information associated with the to-be-verified node locally stored in the associated node, compare and judge whether the transaction records in the block data are the same as the transaction records obtained by locally storing in the transaction storage area to verify the correctness of the transaction records, can perform summary calculation on the transaction records in the block data and the transaction records locally stored, compare whether the summary calculation results are the same to accelerate the comparison, and when the verification is passed, also need to verify the authenticity of the transaction records in the block data according to the associated transaction attribute information.
Optionally, before performing the authenticity verification on the block data, the blockchain platform may further determine, according to the type and the processing requirement of the transaction record in the block data, whether the authenticity verification of the transaction record in the block data needs to be performed in advance, and if necessary, verify the block data according to the method in this embodiment; otherwise, the verification is directly performed according to the existing block verification method, that is, only the validity and correctness of the block data can be verified. Optionally, a specific verification method may be determined according to the transaction value of the transaction record in the zone data and the requirement of the system transaction processing rate (TPS). For example, after the block data is generated by the block generation node, if the block data is a non-financial transaction record or a transaction record with low requirements on TPS, the block generation node determines a relevant node of the node to be verified according to the node identifier, and performs an authenticity verification process on the block data in this embodiment, and if the block data is a financial transaction (transfer, payment, purchase, settlement, etc.) or a transaction record with high requirements on TPS, the block data is verified according to the existing BFT, PBFT, and other non-mining consensus algorithms, and the authenticity verification is not performed.
According to the technical scheme provided by the embodiment, the authenticity verification of the block data is realized through the transaction attribute information associated with the block data in the node, the diversity of block data verification in the block chain system is increased, the possibility that the block generation node maliciously generates the transaction record in the block data is reduced, and the authenticity of the block data recorded in the block chain is improved.
Example two
Fig. 2 is a flowchart of a block data verification method according to a second embodiment of the present invention. The present embodiment is optimized based on the first embodiment. Specifically, referring to fig. 2, the present embodiment may include the following steps:
and S210, locally storing the transaction records of all the nodes in the blockchain system in combination with the corresponding node identifiers so as to carry out data verification subsequently.
Specifically, in the blockchain system, before the verification method of the blockchain data in this embodiment is executed, each node needs to broadcast its own transaction record in the blockchain system, so that each node can store the transaction records of all other nodes in the blockchain system in its own transaction storage area. Optionally, each node locally stores the transaction records broadcast by all other nodes in the blockchain system in combination with the corresponding node identifiers, where the broadcast transaction records further include corresponding serial numbers, so that the locally stored corresponding transaction records are timely extracted according to the node identifiers and the transaction serial numbers during subsequent verification, and the block data is verified.
Optionally, before the performing the verification method of the block data in this embodiment, the method may further include:
and acquiring cloud storage space which is correspondingly distributed by the blockchain platform according to the value of the transaction attribute information in the node of the blockchain platform.
Wherein the blockchain platform interacts with all nodes in the blockchain system. In order to stimulate each node in the blockchain system to process more high-value transaction data, in this embodiment, when each node in the blockchain system writes corresponding transaction attribute information in a local cache or a database, the blockchain platform may further determine the type and the quantity of the transaction attribute information in each node, so as to allocate a cloud storage space with a corresponding capacity to the cloud storage space, so as to stimulate each node to process the associated high-value transaction data. Optionally, before the block recording node executes the block data verification method in this embodiment, a cloud storage space correspondingly allocated by the block chain platform according to the value of the transaction attribute information in its own node may also be obtained in advance, so as to improve data processing efficiency, where the allocated cloud storage space may be used as a supplement and/or backup for local storage of the node.
S220, block data sent by the block generation node in the block chain system is received.
And S230, if the block data comprises a plurality of transaction records, performing parallel initial verification on transaction results in the block data by adopting multiple threads according to an initial verification algorithm.
The multiple threads are multiple running programs configured in the block recording node, each running program processes one transaction record, and the multiple threads can be executed in the block recording node at the same time, so that the processing speed of block data verification is improved. Optionally, when receiving the block data sent by the block generation node, the number of transaction records included in the block data is first determined, and when the block data includes multiple transaction records, the block recording node performs parallel initial verification on multiple transaction results in the block data according to an initial verification algorithm by using multiple threads.
S240, according to the node identifications and the serial numbers corresponding to the transaction records in the block data, the locally stored corresponding transaction records and the associated transaction attribute information are determined, and the correctness and the authenticity of the transaction records in the block data are verified in a multithreading parallel mode.
Specifically, if the block data comprises a plurality of transaction records, the block recording node determines a plurality of locally stored corresponding transaction records and associated transaction attribute information by adopting a plurality of threads according to node identifiers and serial numbers corresponding to the plurality of transaction records in the block data, and verifies the correctness and the authenticity of the plurality of transaction records in the block data by adopting multithreading parallel, so that the verification speed of the block data is further improved, the block data verification limit of authenticity verification determined by a block chain platform according to the transaction value of the transaction records in the block data and the system transaction processing speed is reduced, and the block data authenticity verification range is expanded.
Optionally, in this embodiment, the block recording node may further send verification feedback to the block generating node, so that the block generating node performs corresponding reward and punishment on the to-be-verified node corresponding to the block data according to the verification result, and arouses the enthusiasm of each node for uploading the high-value transaction data.
According to the technical scheme provided by the embodiment, the authenticity verification of the block data is realized through the transaction attribute information associated with the block data in the node, the diversity of block data verification in the block chain system is increased, the possibility that the block generation node maliciously generates the transaction record in the block data is reduced, and the authenticity of the block data recorded in the block chain is improved.
EXAMPLE III
Fig. 3 is a flowchart of a block data verification method according to a third embodiment of the present invention, where the present embodiment is applied to a block generation node of any block chain system, a block chain may be a public chain, a federation chain, or a private chain, and a block chain system usually includes a plurality of nodes, and each node obtains a block generation right to be a block generation node based on a consensus mechanism. The scheme of the embodiment of the invention can be suitable for the block processing process of how to verify the block data. The verification method for block data provided in this embodiment may be executed by the verification apparatus for block data applied to the block generation node of the blockchain system provided in this embodiment of the present invention, and the apparatus may be implemented in a software and/or hardware manner and integrated in a computing device carrying the nodes of the blockchain system. Specifically, referring to fig. 3, the method may include the steps of:
s310, block data is generated according to the transaction records of the nodes to be verified in the block chain system.
The specific node in the blockchain system, which needs to upload the transaction data of the specific node to the blockchain, is a node to be verified in the blockchain system, and optionally, the node to be verified may be any node in the blockchain system. Specifically, the transaction record of the node to be verified is self transaction data which needs to be uploaded to the block chain by the node. When the node to be verified needs to upload the transaction record, the node to be verified sends a corresponding transaction request, and the transaction request is processed by the block generation node in the block chain system, wherein the block generation node can be determined by acquiring a block generation right by each node based on a consensus mechanism in the block chain. Preferably, in this embodiment, each node in the block chain obtains the block generation weight based on a non-mining consensus algorithm, for example, the block generation node is determined by election, and the other nodes are used as the block recording nodes to verify the generated block data.
Specifically, when a to-be-verified node in a blockchain system needs to upload a transaction record of the to-be-verified node to a blockchain for storage, a corresponding transaction request is sent in the blockchain system, a block generation node processes the transaction record of the to-be-verified node in the transaction request, firstly, a plurality of transaction records corresponding to the identification are obtained in a transaction storage area of the to-be-verified node according to a node identification of the to-be-verified node and are placed into a block, hash operation is performed on the transaction records, the hash operation result is encrypted by a private key of the to-be-verified node, and the encrypted hash result is placed into the block together to generate corresponding block data.
S320, the block data is sent to the associated node of the node to be verified, so that the associated node verifies the block data according to the associated transaction attribute information.
The associated nodes are nodes with higher relevance between the transaction data of each node in the blockchain and the transaction data in the nodes to be verified, and the associated nodes of the nodes to be verified comprise the nodes to be verified. In this embodiment, in order to determine the associated node, each node in the blockchain system may write corresponding transaction attribute information in a local cache or a database in advance according to the transaction data correspondingly processed by the node. Optionally, after each node in the blockchain system locally stores the corresponding transaction attribute information, the blockchain platform may determine the association between the nodes according to the transaction attribute information respectively stored by each node, and determine the associated nodes of each node in advance, where the associated nodes may include a blockchain generation node. For example, the blockchain platform may perform cluster analysis on the transaction attribute information of each node to obtain an associated node of each node. Optionally, when the transaction attribute information of the blockchain system node is changed, the blockchain platform may update the associated node of each node in time according to the changed transaction attribute information.
Optionally, after the block generation node generates the corresponding block data according to the transaction record of the node to be verified, the association node of the node to be verified is determined according to the node identifier of the node to be verified, and the generated block data is respectively sent to the corresponding association nodes, where the block data needs to be sent to the node to be verified for self verification, so as to prevent the block generation node from maliciously generating the block data. Optionally, when the identification algorithm in the block chain system of this embodiment performs the verification process of the block data, the block chain nodes participating in the verification are the to-be-verified node and other associated nodes of the to-be-verified node, respectively, where the block generation node may also be an associated node of the to-be-verified node. Specifically, after receiving the block data, each associated node first verifies the validity of the block data according to the prior art, and each associated node can verify the hash result in the block data by using the public key of the block generation node, and if the two are consistent, the block data is considered to be sent by the block generation node and has not been tampered in the transmission process. Optionally, the subsequent node to be verified and each associated node perform consensus according to a preset consensus algorithm in this embodiment, for example, the node to be verified and each associated node obtain corresponding transaction records in their own transaction storage areas according to node identifiers corresponding to the transaction records in the received block data, and compare the transaction records in the block data with the obtained transaction records to determine whether the transaction records are the same, so as to verify the correctness of the transaction records. Optionally, on the basis of the verification scheme, each associated node may also verify the authenticity of the transaction record in the block data according to the transaction attribute information stored by itself in association with the transaction record in the block data, so as to prevent the node to be verified from uploading false transaction information in the block chain.
According to the technical scheme provided by the embodiment, the authenticity verification of the block data is realized through the transaction attribute information associated with the block data in the node, the diversity of block data verification in the block chain system is increased, the possibility that the block generation node maliciously generates the transaction record in the block data is reduced, and the authenticity of the block data recorded in the block chain is improved.
Example four
Fig. 4 is a flowchart of a block data verification method according to a fourth embodiment of the present invention. This embodiment is optimized based on the third embodiment. Specifically, referring to fig. 4, the present embodiment may include the following steps:
and S410, acquiring cloud storage space correspondingly allocated by the blockchain platform according to the value of the transaction attribute information in the node of the blockchain platform.
The block chain platform interacts with all nodes in the block chain system, and allocates cloud storage space with corresponding capacity to the block chain platform according to the transaction attribute information of the block generation nodes. Optionally, before the node executes the method for verifying the block data in this embodiment, the cloud storage space that is correspondingly allocated by the block chain platform according to the value of the transaction attribute information in the node of the node may also be acquired.
S420, generating block data according to the transaction record of the node to be verified in the block chain system.
S430, the block data is sent to the associated node of the node to be verified, so that the associated node verifies the block data according to the associated transaction attribute information.
S440, receiving verification feedback of the associated nodes to the block data, and if the number of the associated nodes passing the verification is greater than or equal to the verification threshold, sending the block data to other nodes in the block chain system.
The verification threshold is determined by a consensus mechanism in the blockchain system, and is the number of nodes passing the verification of the corresponding block data when the block consensus passes. For example, the corresponding verification threshold in the PBFT-based consensus algorithm is (2N +1)/3, where N is the total number of nodes participating in the consensus.
Optionally, after the block data is verified by each associated node, the block generation node receives corresponding verification feedback sent by each associated node, and determines the number of associated nodes that pass the block data verification according to a verification feedback result, if the number of associated nodes that pass the verification is greater than or equal to a verification threshold in a consensus mechanism corresponding to the block chain system, and reaches a corresponding consensus ratio, it indicates that the block data is valid, correct, and real, each node in the block chain achieves consensus on the block data, and the block generation node may send the block data to all other nodes in the block chain system, so that the other nodes upload the block data to a block chain stored in itself, and ensure consistency of the block chain. Optionally, when the other nodes upload the block data to the block chain stored in the other nodes, the transaction record corresponding to the block data in the transaction storage area of the other nodes may also be deleted, so as to increase the storage space. At this time, the block generation node may also upload the block data to its corresponding block chain, and delete the transaction record corresponding to the block data in its transaction storage area according to the uploaded block data.
According to the technical scheme provided by the embodiment, the authenticity verification of the block data is realized through the transaction attribute information associated with the block data in the node, the diversity of block data verification in the block chain system is increased, the possibility that the block generation node maliciously generates the transaction record in the block data is reduced, and the authenticity of the block data recorded in the block chain is improved.
EXAMPLE five
Fig. 5 is a flowchart of a verification method of block data interacted between nodes in a blockchain system according to a fifth embodiment of the present invention. The present embodiment is further explained on the basis of the above embodiments, the interaction process of each node of the blockchain system. As shown in fig. 5, this embodiment may specifically include the following steps:
and S510, the block generation node and the block recording node respectively acquire cloud storage spaces which are correspondingly distributed by the block chain platform according to the value of the transaction attribute information in the node.
And S520, the block generation node and the block record node respectively and locally store the transaction records of all the nodes in the block chain system in combination with the corresponding node identifiers so as to carry out data verification subsequently.
S530, the block generation node generates block data according to the transaction record of the node to be verified in the block chain system.
S540, the block generation node sends the block data to the associated node of the node to be verified.
S550, each associated node in the block recording nodes receives the block data sent by the block generating node in the block chain system.
S560, if the block data includes multiple transaction records, then each associated node in the block record nodes verifies the multiple transaction records in the block data in parallel by using multiple threads.
S570, the block generating node receives the verification feedback of the associated node to the block data, and if the number of associated nodes passing the verification is greater than or equal to the verification threshold, sends the block data to other nodes in the block chain system.
According to the technical scheme provided by the embodiment, the authenticity verification of the block data is realized through the transaction attribute information associated with the block data in the node, the diversity of block data verification in the block chain system is increased, the possibility that the block generation node maliciously generates the transaction record in the block data is reduced, and the authenticity of the block data recorded in the block chain is improved.
EXAMPLE six
Fig. 6 is a flowchart of a verification method for block data applied to a specific blockchain system according to a sixth embodiment of the present invention. The embodiment provides a specific application scenario based on the above embodiment. In this embodiment, the blockchain system includes 10 nodes a-J, the block generation node is node B, and other nodes are all the block recording nodes in the blockchain system. The block generation node in this embodiment is generated by voting and selecting each node in the block chain system, for example, a master node in the PBFT consensus, a Leader node in the RAFT, and a new block generation node when the block generation node fails.
Specifically, each node writes corresponding transaction attribute information in a local cache or a database in advance. Wherein, the node A writes in 'a transfer record with a bank, a commodity logistics record, a commodity buying and selling circulation record, a company personnel record and the like', the node B also writes in 'a transfer record with a bank, a commodity logistics record, a commodity buying and selling circulation record, a company personnel record and the like', the node C writes in 'a transfer record with a bank, a commodity logistics record, a commodity buying and selling circulation record and the like', the node D writes in 'a transfer record with a bank, a company personnel record and the like', the nodes E-F only write in 'a commodity buying and selling circulation record and the like', the nodes G-J do not write in any relevant information, and only write in 'registration information of certain type of certificate and certificate'. Wherein for node A, nodes A-F are nodes associated therewith and nodes G-J are nodes unassociated therewith.
As shown in fig. 6, the verification method applied to the block data in the specific blockchain system may include the following steps:
s610, the block generation node B receives the transaction request of the node A, searches the transaction record of the node A in the transaction storage area of the block generation node B, and processes the transaction record to generate block data.
Specifically, the block generation node B takes out a plurality of transaction records of the node A from the transaction storage area of the block generation node B, determines the associated node B-F corresponding to the node A according to the node identification, and determines the associated node A-F participating in the round of verification. And then, starting to participate in verification, putting a plurality of transaction records of the node A into the block by the block generation node B before verification, carrying out hash operation on the transaction records, encrypting the hash operation result by using a private key of the node A, putting the encrypted hash result into the block together, and generating corresponding block data.
S620, the block generation node B sends the generated block data to the nodes A, C-F and other related nodes respectively.
S630, the node A and the nodes C-F verify the block data, and feed back the verification result to the block generation node B.
Specifically, the node A and the nodes C-F respectively carry out Hash decryption on the received block data, the validity of a transaction result is verified, after the verification is passed, the correctness of the transaction record in the block data is judged through the transaction record of the node A stored in the transaction storage areas of the node A and the nodes C-F, and the authenticity of the block data is verified according to the transaction attribute information related to the node A, the nodes C-F and the nodes A. For example, the transaction request sent by the node a is "a company sends 5000-element wage to an employee", the node B sends the processed block data to the node C, and the income condition of the employee of the company is also written in the node C, wherein "the highest wage sent to the employee of the company is 4500" is stated in the transaction attribute information of the node C, at this time, the node C directly determines that the verification fails according to the transaction attribute information of the node C when verifying the block data, and the authenticity verification of the block data is realized.
And S640, the block generation node B receives the verification feedback sent by the node A and the nodes C-F, and if the number of the associated nodes passing the verification is greater than or equal to the verification threshold, the block generation node B sends the block data to other nodes in the block chain system.
Optionally, assuming that PBFT consensus is used in this embodiment, nodes a to E all return consensus responses that pass verification, node F returns consensus responses that fail verification, or node F does not return consensus responses, then the block generation node B determines that 5 nodes pass verification and are greater than or equal to (2N +1)/3 nodes, where N is a total number of nodes, where N is 6, and sends the block data to node a and nodes C to J in the block chain system, so that other nodes add the block data to their own block chains and delete corresponding transaction records in the block data from their own transaction storage areas.
According to the technical scheme provided by the embodiment, the authenticity verification of the block data is realized through the transaction attribute information associated with the block data in the node, the diversity of block data verification in the block chain system is increased, the possibility that the block generation node maliciously generates the transaction record in the block data is reduced, and the authenticity of the block data recorded in the block chain is improved.
EXAMPLE seven
Fig. 7 is a schematic structural diagram of a verification apparatus for block data according to a seventh embodiment of the present invention, specifically, as shown in fig. 7, the verification apparatus may include:
a block receiving module 710, configured to receive block data sent by a block generating node in a block chain system;
the block verification module 720 is configured to verify the block data according to the transaction attribute information associated with the block data, and send verification feedback to the block generation node.
According to the technical scheme provided by the embodiment, the verification of the block data is realized through the transaction attribute information associated with the block data in the node, the diversity of the block data verification in the block chain system is increased, the possibility that the block generation node maliciously generates the transaction record in the block data is reduced, and the authenticity of the block data recorded in the block chain is improved.
Further, the above apparatus may further include: the record storage module 730 is configured to, before receiving the block data sent by the block generation node in the blockchain system, locally store the transaction records of all nodes in the blockchain system in combination with the corresponding node identifiers, so as to perform data verification subsequently.
Further, the block verification module 720 may include: an initial verification unit 7201 configured to perform initial verification on a transaction result in the tile data according to an initial verification algorithm; the correctness and authenticity verifying unit 7202 is configured to determine the locally stored corresponding transaction record and the associated transaction attribute information according to the node identifier and the serial number corresponding to the transaction record in the block data, and verify the correctness and authenticity of the transaction record in the block data.
Further, the block verification module 720 may further be configured to: and if the block data comprises a plurality of transaction records, verifying the authenticity of the transaction records in the block data in a multithread parallel mode.
Further, the above apparatus may further include: the cloud storage obtaining module 740 is configured to obtain a cloud storage space that is correspondingly allocated by the blockchain platform according to the value of the transaction attribute information in the node of the blockchain platform, where the blockchain platform interacts with all nodes in the blockchain system.
The verification apparatus for block data provided in this embodiment is applicable to the verification method for block data applied to the block recording node of the block chain system provided in any of the above embodiments, and has corresponding functions and advantages.
Example eight
Fig. 8 is a schematic structural diagram of a verification apparatus for block data according to an eighth embodiment of the present invention, specifically, as shown in fig. 8, the verification apparatus may include:
the block generation module 810 is configured to generate block data according to a transaction record of a node to be verified in the blockchain system, where the node to be verified is any node in the blockchain system;
the first block sending module 820 is configured to send the block data to an associated node of the node to be verified, so that the associated node verifies the block data according to the associated transaction attribute information.
According to the technical scheme provided by the embodiment, the verification of the block data is realized through the transaction attribute information associated with the block data in the node, the diversity of the block data verification in the block chain system is increased, the possibility that the block generation node maliciously generates the transaction record in the block data is reduced, and the authenticity of the block data recorded in the block chain is improved.
Further, the above apparatus may further include: the second block sending module 830 is configured to receive verification feedback of the associated node on the block data, and send the block data to other nodes in the blockchain system if the number of associated nodes passing the verification is greater than or equal to the verification threshold.
Further, the above apparatus may further include: the cloud storage obtaining module 840 is configured to obtain a cloud storage space that is correspondingly allocated by the blockchain platform according to the value of the transaction attribute information in the node of the blockchain platform, where the blockchain platform interacts with all nodes in the blockchain system.
The verification apparatus for block data provided in this embodiment is applicable to the verification method for block data applied to the block generation node of the block chain system provided in any of the above embodiments, and has corresponding functions and advantages.
Example nine
Fig. 9 is a schematic structural diagram of an apparatus according to a ninth embodiment of the present invention, as shown in fig. 9, the apparatus includes a processor 90, a storage device 91, and a communication device 92; the number of processors 90 in the device may be one or more, and one processor 90 is taken as an example in fig. 9; the processor 90, the storage means 91 and the communication means 92 in the device may be connected by a bus or other means, as exemplified by the bus connection in fig. 9.
The storage device 91 serves as a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the verification method applied to the block data in each node of the block chain system in the embodiment of the present invention. The processor 90 executes various functional applications and data processing of the device by running software programs, instructions and modules stored in the storage device 91, that is, implements the above-described verification method applied to the tile data in the tile record node of the blockchain system.
The storage device 91 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the storage 91 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the storage 91 may further include memory located remotely from the processor 90, which may be connected to the device over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The communication means 92 may be used to implement a network connection or a mobile data connection between devices carrying nodes in the blockchain system.
The device provided by this embodiment may be used to execute the verification method applied to the block data in each node of the block chain system provided by any of the above embodiments, and has corresponding functions and advantages.
Example ten
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, can implement the method for verifying the tile data applied to the tile record node of the tile chain system in any of the embodiments described above. The method specifically comprises the following steps:
receiving block data sent by a block generation node in a block chain system;
and verifying the block data according to the transaction attribute information associated with the block data, and sending verification feedback to the block generation node.
Or, the method may specifically include:
generating block data according to the transaction record of a node to be verified in the block chain system, wherein the node to be verified is any node in the block chain system;
and sending the block data to the associated node of the node to be verified so that the associated node verifies the block data according to the associated transaction attribute information.
Of course, the storage medium containing computer-executable instructions provided by the embodiments of the present invention is not limited to the method operations described above, and may also perform related operations in the verification method applied to the block data in the block recording node of the block chain system provided by any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the verification apparatus for chunk data in a chunk recording node applied to the chunk chain system, the included units and modules are only divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A method for verifying block data, comprising:
receiving block data sent by a block generation node in a block chain system;
verifying the block data according to transaction attribute information associated with the block data, and sending verification feedback to the block generation node, so that the block generation node determines the number of associated nodes passing the block data verification according to a verification feedback result, if the number of the associated nodes passing the verification is greater than or equal to a verification threshold value in a consensus mechanism corresponding to the block chain system, the block data is sent to all other nodes in the block chain system, and the other nodes upload the block data to a block chain stored by the other nodes, wherein the associated nodes are determined by a block chain platform after judging the relevance of each node according to the transaction attribute information of each node;
the verifying the tile data according to transaction attribute information associated with the tile data comprises:
and determining the locally stored corresponding transaction record and the associated transaction attribute information according to the node identifier and the serial number corresponding to the transaction record in the block data, and verifying the correctness and the authenticity of the transaction record in the block data, wherein the correctness is verified through the locally stored and acquired corresponding transaction record, and the authenticity is verified through the associated transaction attribute information.
2. The method of claim 1, prior to receiving block data transmitted by a block generation node in a block chaining system, further comprising:
and locally storing the transaction records of all the nodes in the block chain system in combination with the corresponding node identifiers so as to carry out data verification subsequently.
3. The method of claim 2, wherein verifying the tile data according to transaction attribute information associated with the tile data comprises:
and performing initial verification on the transaction result in the block data according to an initial verification algorithm.
4. The method of claim 1, wherein the validating the tile data according to transaction attribute information associated with the tile data further comprises:
and if the block data comprises a plurality of transaction records, verifying the transaction records in the block data in parallel by adopting multithreading.
5. The method of claim 1, further comprising:
and acquiring a cloud storage space which is correspondingly distributed by a blockchain platform according to the value of the transaction attribute information in the node of the blockchain platform, wherein the blockchain platform interacts with all nodes in the blockchain system.
6. A method for verifying block data, comprising:
generating block data according to a transaction record of a node to be verified in a block chain system, wherein the node to be verified is any node in the block chain system;
sending the block data to a related node of the node to be verified so that the related node verifies the block data according to related transaction attribute information, wherein the related node is determined by a block chain platform after judging the relevance of each node through the transaction attribute information of each node;
and receiving verification feedback of the associated node to the block data, and if the number of the associated nodes passing the verification is greater than or equal to a verification threshold, sending the block data to other nodes in the block chain system, so that the other nodes upload the block data to a block chain stored by the other nodes, wherein the verification feedback comprises verification results of the correctness and the authenticity of the transaction record in the block data.
7. The method of claim 6, further comprising:
and acquiring a cloud storage space which is correspondingly distributed by a blockchain platform according to the value of the transaction attribute information in the node of the blockchain platform, wherein the blockchain platform interacts with all nodes in the blockchain system.
8. An apparatus for verifying block data, comprising:
the block receiving module is used for receiving block data sent by a block generating node in a block chain system;
the block verification module is used for verifying the block data according to the transaction attribute information associated with the block data and sending verification feedback to the block generation node so that the block generation node determines the number of associated nodes passing the block data verification according to a verification feedback result, and if the number of the associated nodes passing the verification is greater than or equal to a verification threshold value in a consensus mechanism corresponding to the block chain system, the block data is sent to all other nodes in the block chain system so that the other nodes upload the block data to a block chain stored in the block chain platform, wherein the associated nodes are determined by the block chain platform after the block chain platform judges the relevance of each node according to the transaction attribute information of each node;
the verifying the tile data according to transaction attribute information associated with the tile data comprises:
and determining the locally stored corresponding transaction record and the associated transaction attribute information according to the node identifier and the serial number corresponding to the transaction record in the block data, and verifying the correctness and the authenticity of the transaction record in the block data, wherein the correctness is verified through the locally stored and acquired corresponding transaction record, and the authenticity is verified through the associated transaction attribute information.
9. An apparatus for verifying block data, comprising:
the block generation module is used for generating block data according to the transaction record of a node to be verified in a block chain system, wherein the node to be verified is any node in the block chain system;
the first block sending module is used for sending the block data to the associated node of the node to be verified so that the associated node verifies the block data according to the associated transaction attribute information, wherein the associated node is determined by the block chain platform after judging the association of each node through the transaction attribute information of each node;
and the second block sending module is used for receiving verification feedback of the associated node on the block data, and if the number of the associated nodes passing the verification is greater than or equal to a verification threshold, sending the block data to other nodes in the block chain system to enable the other nodes to upload the block data to a block chain stored in the other nodes, wherein the verification feedback comprises verification results of the correctness and the authenticity of the transaction record in the block data.
10. An apparatus for verifying block data, comprising:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a method of validating tile data as claimed in any one of claims 1 to 5.
11. An apparatus for verifying block data, comprising:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a method of validating tile data as claimed in any one of claims 6 to 7.
12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method of verifying block data according to any one of claims 1 to 5.
13. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method of verifying block data according to any one of claims 6 to 7.
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| CN110766552B (en) * | 2019-09-28 | 2023-10-20 | 北京瑞卓喜投科技发展有限公司 | Business processing method and device based on block chain |
| CN110728515A (en) * | 2019-09-28 | 2020-01-24 | 北京瑞卓喜投科技发展有限公司 | Service processing method and device based on block chain |
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