CN117155574A - Block chain endorsement method and device, electronic equipment and storage medium - Google Patents

Block chain endorsement method and device, electronic equipment and storage medium Download PDF

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Publication number
CN117155574A
CN117155574A CN202210560871.3A CN202210560871A CN117155574A CN 117155574 A CN117155574 A CN 117155574A CN 202210560871 A CN202210560871 A CN 202210560871A CN 117155574 A CN117155574 A CN 117155574A
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endorsement
node
blockchain
target
nodes
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刘克猛
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Tencent Technology Shenzhen Co Ltd
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Tencent Technology Shenzhen Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

The embodiment of the application provides a blockchain endorsing method, a device, electronic equipment and a storage medium, wherein the method can be applied to endorsing nodes in a blockchain; in the subsequent signature verification process, the embodiment of the application can embody that the current initiated service proposal has obtained endorsement results of M endorsement nodes aiming at the service proposal based on the generated target endorsement signature, reduces the transmission data volume of the service proposal in a network based on the mode, shortens a large amount of waiting time required in the subsequent signature verification process, and further improves the verification efficiency of the blockchain endorsement results.

Description

Block chain endorsement method and device, electronic equipment and storage medium
Technical Field
The present application relates to the field of blockchain technologies, and in particular, to a blockchain endorsing method, a blockchain endorsing device, an electronic device, and a storage medium.
Background
Blockchain (blockchain) is a distributed data set that combines blocks of data into a chain data structure in a sequential manner and cryptographically guarantees that they store data. Smart contract (smart contract) is a typical application of blockchain technology aimed at enabling intelligent, efficient scheduling of traffic among contract nodes on a chain by means of specified computer program code embedded in the blockchain.
Specifically, referring to fig. 1, in order to make a service proposal initiated in a blockchain have more public trust, when a trigger node corresponding to the proposal deploys an intelligent contract, a specified endorsement policy is usually set, so that an endorsement signature of a specified number of endorsement nodes in the blockchain on the proposal is obtained in advance before the service proposal initiated by the trigger node is executed; specifically, each application node with an endorsement function in the blockchain can sign the current service proposal based on meta information (representing a randomly generated data unit) and an endorsement private key carried by the meta information, so as to reflect the endorsement result of the corresponding endorsement node on the service proposal according to the generated endorsement signature.
On the basis, the triggering node can respectively initiate corresponding scheduling requests to a plurality of endorsement nodes associated with the triggering node through specifying problem parameters of the service proposal, so as to further attach endorsement signatures of a plurality of endorsement nodes responded by the triggering node to a data set corresponding to the service proposal, and based on the mode, the consensus node in the block chain can carry out multiple signature verification on the plurality of endorsement signatures obtained by the consensus node based on each carried endorsement public key, namely, according to meta information carried by each endorsement signature and the corresponding endorsement public key thereof, the endorsement results of each endorsement node are respectively verified.
However, in the related art, the above manner has the following drawbacks:
1) In the above process, the trigger node needs to add endorsement signatures responded by a plurality of endorsement nodes into the data set corresponding to the current service proposal together, so as to prove that the service proposal is completed endorsing by the endorsement nodes with the appointed number.
2) After the consensus node obtains the service proposal sent by the trigger node, the endorsement results of the carried endorsement signatures are respectively verified based on the carried endorsement public keys, and the endorsement verification process of the consensus node is generally longer, so that the block chain endorsement verification efficiency is generally lower under the actual condition.
Disclosure of Invention
The embodiment of the application provides a method, a device, electronic equipment and a storage medium for obtaining a blockchain endorsement result, which are used for improving the verification efficiency of the blockchain endorsement result.
In one aspect, an embodiment of the present application provides a blockchain endorsing method applied to an endorsing node in which an intelligent contract is deployed in a blockchain, the method including:
and obtaining a service proposal initiated by a trigger node in the block chain, wherein the service proposal comprises information to be uplinked.
Based on the intelligent contract, an endorsement request aiming at a service proposal is initiated to N other endorsement nodes in the blockchain, and endorsement signatures of M endorsement nodes are obtained, wherein M epsilon [1, N ], and each endorsement signature is obtained based on an endorsement private key carried by the corresponding endorsement node.
Aggregating the obtained M endorsement signatures to generate corresponding target endorsement signatures, wherein the target endorsement signatures represent: and endorsement results of the M endorsement nodes.
And sending the service proposal carrying the target endorsement signature to a consensus node in the blockchain, so that the consensus node verifies the target endorsement signature based on at least M preset endorsement public keys.
In one aspect, an embodiment of the present application provides a blockchain endorsing device, where the device is applied to an endorsing node in which an intelligent contract is deployed in a blockchain, and the device includes:
The system comprises an acquisition module, a trigger node and a service proposal generation module, wherein the acquisition module is used for acquiring a service proposal initiated by a trigger node in a block chain, and the service proposal comprises information to be uplinked.
The system comprises an acquisition module, a service proposal processing module and a service proposal processing module, wherein the acquisition module is used for initiating endorsement requests for service proposals to N other endorsement nodes in a blockchain based on intelligent contracts to obtain endorsement signatures of M endorsement nodes, wherein M is [1, N ], and each endorsement signature is obtained based on an endorsement private key carried by the corresponding endorsement node;
the aggregation module is used for aggregating the obtained M endorsement signatures to generate corresponding target endorsement signatures, wherein the target endorsement signatures represent: endorsement results of the M endorsement nodes;
and the transmission module is used for transmitting the service proposal carrying the target endorsement signature to the consensus node in the blockchain, so that the consensus node verifies the endorsement results of the M endorsement nodes based on at least M preset endorsement public keys.
Optionally, the service proposal further includes: triggering signature of the triggering node on the service proposal;
the acquisition module is specifically configured to, based on the intelligent contract, when an endorsement request for a service proposal is initiated to N other endorsement nodes in the blockchain:
and verifying the trigger signature.
And when the trigger signature verification is determined to be successful, based on the intelligent contract, an endorsement request for the service proposal is initiated to N other endorsement nodes in the blockchain.
Optionally, the aggregation module is specifically configured to aggregate the obtained M endorsement signatures to generate corresponding target endorsement signatures:
and aggregating the meta information carried by each of the M endorsement signatures to obtain corresponding target meta information, wherein each meta information represents: a corresponding endorsement node generates a random data unit for the service proposal;
and based on the target meta information, aggregating the obtained M endorsement signatures to generate corresponding target endorsement signatures.
Optionally, the target endorsement signature carries target meta information;
the transfer module is specifically configured to, when sending the service proposal carrying the target endorsement signature to the consensus node in the blockchain:
and sending the service proposal carrying the target meta information and the target endorsement signature to an consensus node in the blockchain, so that the consensus node obtains corresponding verification public keys based on at least M preset endorsement public keys, and then verifies endorsement results of the M endorsement nodes based on the target meta information and the verification public keys.
Optionally, before sending the target endorsement signature to at least one consensus node in the blockchain, the aggregation module is further configured to:
aggregating node identifiers of M endorsement nodes to generate corresponding target identifier information, wherein each node identifier is associated with a preset endorsement public key;
The transfer module is specifically configured to, when sending the service proposal carrying the target endorsement signature to at least one consensus node in the blockchain:
and sending the service proposal carrying the target identification information and the target endorsement signature to at least one consensus node in the blockchain, so that the at least one consensus node obtains corresponding M target endorsement public keys from at least M preset endorsement public keys based on the carried target identification information, and verifies the target endorsement signature based on the M target endorsement public keys.
Optionally, when the endorsement result of the M endorsement nodes is successfully verified, the consensus node generates a service block containing the service proposal;
the transfer module is further configured to, after sending the service proposal carrying the target endorsement signature to the consensus node in the blockchain:
and synchronizing the service blocks.
And obtaining an execution result of the service proposal based on the synchronized service block.
In one aspect, embodiments of the present application provide a computer device storing a computer program executable by a blockchain endorsement method, the computer device performing the steps of the blockchain endorsement method described above when the program is run on the computer device.
In one aspect, embodiments of the present application provide a computer readable storage medium storing a computer program executable by a computer device, which when run on the computer device, causes the computer device to perform the steps of the blockchain endorsement method described above.
In one aspect, embodiments of the present application also provide a computer program product which, when invoked by a computer, causes the computer to perform the method according to the first aspect.
The embodiment of the application provides a block chain endorsement method, a device, electronic equipment and a storage medium, wherein the method can be applied to endorsement nodes in a block chain, and concretely, the endorsement nodes applied to the method can initiate corresponding endorsement requests to an appointed number of endorsement nodes in the block chain through deployed intelligent contracts and acquired service proposals, aggregate each endorsement signature when acquiring each endorsement signature responded by the endorsement nodes, generate corresponding target endorsement signatures, and send the target endorsement signatures to consensus nodes in the block chain, so that the consensus nodes verify endorsement results of the endorsement nodes.
Based on the above manner, when a plurality of endorsement signatures are obtained, the embodiment of the application can aggregate the endorsement signatures and generate a corresponding target endorsement signature, so that the service proposal can be proved to be endorsed by a plurality of endorsement nodes by adding the target endorsement signature into the initiated service proposal, and the problem of increased transmission data volume caused by the simultaneous addition of a plurality of endorsement signatures is avoided; on the other hand, the consensus node can verify the endorsement results of the endorsement nodes at the same time only by verifying the target endorsement signature carried by the consensus node once after obtaining the service proposal, so that the problem of long verification time caused by repeated verification of the endorsement signatures is further avoided, and the verification efficiency of the blockchain endorsement results is improved.
Drawings
FIG. 1 is a schematic diagram of a related art according to an embodiment of the present application;
FIG. 2A is a schematic diagram of a data sharing system according to an embodiment of the present application;
FIG. 2B is a schematic diagram of a blockchain configuration provided by an embodiment of the present application;
FIG. 3 is a block chain system diagram according to an embodiment of the present application;
FIG. 4 is a schematic diagram of key distribution according to an embodiment of the present application;
FIG. 5 is a flowchart of a blockchain endorsement method provided by an embodiment of the present application;
fig. 6 is a schematic diagram of an endorsement signature acquisition process provided in an embodiment of the present application;
fig. 7 is a schematic diagram of a target endorsement signature acquisition process according to an embodiment of the present application;
FIG. 8 is a schematic diagram of a block generation process according to an embodiment of the present application;
FIG. 9 is a logic diagram of a blockchain endorsement scenario provided by an embodiment of the present application;
FIG. 10 is a logic diagram of another blockchain endorsement scenario provided by an embodiment of the present application;
FIG. 11 is a schematic diagram of a block chain endorsement device according to an embodiment of the present application;
fig. 12 is a schematic diagram of an electronic device according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.
The design idea of the application is as follows:
the application relates to the technical field of blockchain, in particular to a distributed network data management technology for ensuring network transmission and access safety by utilizing a cryptography technology and a distributed consensus protocol.
In the related art, in order to make a service proposal constructed by a certain trigger node in a blockchain have more public confidence (i.e. obtain the consensus of most nodes in the chain), before the proposal is formally initiated, a scheduling request containing the corresponding proposal parameters of the service proposal is constructed according to the deployed intelligent contract, and is broadcasted to an endorsement node cluster in the current blockchain. Furthermore, each endorsement node in the blockchain, which receives the current scheduling request, can sign a corresponding endorsement generated based on the randomly generated data unit and the carried corresponding endorsement private key, so as to reflect the endorsement result of the corresponding endorsement node on the service proposal.
Based on the above process, when the trigger node needs to obtain the endorsement signature of the specified number, the trigger node packages and adds the endorsement signature into the data set corresponding to the service proposal, and then the trigger node sequentially verifies the endorsement results of a plurality of endorsement nodes by reinitiating the service proposal, so that in the subsequent process, the consensus node cluster receiving the service proposal can verify the endorsement results of a plurality of endorsement nodes based on the endorsement public key carried by the consensus node cluster and the received endorsement signatures.
However, based on the above process, the following drawbacks remain:
1) In the above process, the trigger node needs to add endorsement signatures responded by a plurality of endorsement nodes into the data set corresponding to the current service proposal together, so as to prove that the service proposal is completed endorsing by the endorsement nodes with the appointed number.
2) After the consensus node obtains the service proposal sent by the trigger node, the endorsement results of the carried endorsement signatures are respectively verified based on the carried endorsement public keys, and the endorsement verification process of the consensus node is generally longer, so that the block chain endorsement verification efficiency is generally lower under the actual condition.
In order to improve endorsement efficiency of a blockchain, the embodiment of the application provides a blockchain endorsement method, a blockchain endorsement device, electronic equipment and a storage medium, wherein the method can be applied to endorsement nodes in the blockchain, specifically, through an intelligent contract deployed and a service proposal obtained, corresponding endorsement requests are initiated to an appointed number of endorsement nodes in the blockchain, when each endorsement signature responded by the endorsement requests is obtained, each endorsement signature is aggregated, a corresponding target endorsement signature is generated, and the target endorsement signature representing endorsement results of a plurality of endorsement nodes is sent to a consensus node in the blockchain, so that the consensus node can verify the endorsement results of a plurality of endorsement nodes at one step.
Based on the mode, the embodiment of the application can embody the endorsement results of a plurality of endorsement nodes by adding the generated target endorsement signature into the initiated service proposal, thereby avoiding the problem of increased transmission data volume caused by the common addition of a plurality of endorsement signatures; on the other hand, as the common node in the blockchain only needs to aggregate the preset endorsement public key, the endorsement results of a plurality of endorsement nodes can be verified at one time based on the aggregated verification public key, so that the problem of long verification time of the common node on the endorsement results of the plurality of endorsement nodes is greatly shortened, and the verification efficiency of the endorsement results of the blockchain is improved.
An application scenario suitable for the blockchain endorsement method in the embodiment of the present application is described below by way of example, and referring to fig. 2A, a schematic diagram of an application scenario suitable for the embodiment of the present application is shown, where the application scenario diagram includes a data sharing system deployed with a blockchain.
Referring to the data sharing system shown in fig. 2A, the data sharing system is configured to perform data sharing between nodes, where the data sharing system may include a plurality of nodes 202, and the plurality of nodes 202 may be clients in the data sharing system. Each node 202 may receive input information during normal operation and maintain shared data within the data sharing system based on the received input information. In order to ensure the information intercommunication in the data sharing system, information connection can exist between each node in the data sharing system, and the nodes can transmit information through the information connection. For example, when any node in the data sharing system receives input information, other nodes in the data sharing system acquire the input information according to a consensus algorithm, and store the input information as data in the shared data, so that the data stored on all nodes in the data sharing system are consistent.
Each node in the data sharing system has a node identifier corresponding to the node identifier, and each node in the data sharing system can store the node identifiers of other nodes in the data sharing system, so that the generated block can be broadcast to other nodes in the data sharing system according to the node identifiers of other nodes. Each node can maintain a node identification list shown in the following table, and the node names and the node identifications are correspondingly stored in the node identification list. The node identifier may be an IP (Internet Protocol, protocol of interconnection between networks) address, or any other information that can be used to identify the node, and the serial number of the node is only illustrated in table 1.
TABLE 1
Node name Node identification
Node 1 1
Node 2 2
… …
Node N N
Each node in the data sharing system stores one and the same blockchain. The blockchain is composed of a plurality of blocks, referring to fig. 2B, the blockchain is composed of a plurality of blocks, the starting block comprises a block header and a block main body, the block header stores an input information characteristic value, a version number, a time stamp and a difficulty value, and the block main body stores input information; the next block of the starting block takes the starting block as a father block, the next block also comprises a block head and a block main body, the block head stores the input information characteristic value of the current block, the block head characteristic value of the father block, the version number, the timestamp and the difficulty value, and the like, so that the block data stored in each block in the block chain are associated with the block data stored in the father block, and the safety of the input information in the block is ensured.
In the above data sharing system, any machine, such as a server and a terminal, may be added to form a node, where the node may be located in an application layer of a blockchain, and is configured to implement a specific service according to an actual service requirement, record data related to an implementation function to form record data, carry a digital signature in the record data to represent a source of task data, and send the record data to other nodes in the data sharing system, so that the other nodes may add the record data to a temporary block when verifying that the source and integrity of the record data are successful (i.e. reaching a data consensus).
Specifically, in the data sharing system, the service functions of the node may include:
1) And the key generation is used for generating a specific public and private key pair for each node in the data sharing system, so that each node realizes the data consensus of other nodes aiming at the appointed service proposal in the subsequent process according to the public system parameters and the carried corresponding public and private key pairs.
2) Proposal sharing is used for constructing and initiating a service proposal for a specific service function, and the service proposal can contain specific service types to respectively represent operations such as inquiring or modifying stored specific service data.
3) And endorsing, which is used for obtaining the pre-execution result of the service proposal and generating an endorsement signature aiming at the service proposal based on the obtained pre-execution result, wherein the endorsement signature can be specifically generated based on the system parameters issued by the public node and the corresponding endorsement private key carried by the system parameters.
In an alternative embodiment, one of the endorsement nodes with an endorsement function in the data sharing system may be used as a proxy endorsement node to collect endorsement signatures of a specified number of other endorsement nodes in the blockchain when the service proposal is initiated, so as to alleviate the operation pressure of the trigger node.
4) And the consensus node is used for verifying endorsement signatures carried in the subsequently initiated service proposals to judge the data sources, the integrity and the like of the current service proposal, and optionally, when the verification is successful, the consensus node can add corresponding service data into the appointed temporary block.
It should be noted that each system node included in the foregoing represents only one service function of a corresponding physical node in an actual scenario, and does not represent the node itself of the physical node, so in an alternative embodiment, each physical node may actually carry one or more service functions specified in the foregoing, for example, may have two different service functions of endorsement and consensus mentioned in the foregoing at the same time, so as to be used as a corresponding endorsement node and consensus node in the embodiment of the present application.
For example, in an alternative embodiment, it is assumed that the data sharing system includes 10 physical nodes (node 1-node 10), and each node has a service function as shown in the following table 2:
TABLE 2
Node name Service function
Node 1 Key generation
Node 2 Proposal sharing
Node 3-node 6 Endorsement
Node 7-node 10 Consensus
Based on the service functions shown in table 2, referring to fig. 3, a block chain system diagram corresponding to the data sharing system is shown, where the system includes a key generating node 301, a triggering node 302, an endorsement node 303, and a consensus node 304.
In an alternative embodiment, the blockchain system may be implemented with a smart contract, where the smart contract is implemented by code deployed on the blockchain for executing when a certain condition is met, and characterizes contract terms between specific nodes, for example, an endorsement policy for the trigger node 302, and in particular, the smart contract may be expressed as: the trigger node 302 needs to obtain endorsement signatures for a specified number of endorsement nodes in the blockchain when initiating a traffic proposal. It is noted that in a practical scenario, the above-described smart contracts are not limited to executing contracts for specifying business proposals, but may also execute contracts that process received information.
In an alternative embodiment, referring to FIG. 4, prior to triggering node 302 to initiate a service proposal, key generating node 301 may employ a particular key generating algorithm to generate and issue a particular public-private key pair for each other node in the blockchain<x i ,y i >(x i Representing that the corresponding other node carriesIs the private key, y i Representing a public key carried by the corresponding other node, i representing the node name of the corresponding other node); optionally, the other nodes include, but are not limited to, the above-mentioned trigger node, endorsement node, or other node combinations, and the application is not limited thereto; specifically, in the embodiment of the present application, the public-private key pair may be obtained in the following manner:
x i ∈[1,p-1]
where p is a large prime number that makes discrete logarithm calculation over GF (p) infeasible, g is the primitive of GF (p), GF (p) is a specified prime field, based on the above equation, the key generation node 301 can generate and issue a specific public-private key pair for each other node in the blockchain system, and disclose the above system parameters p, g and a preset secure hash function H to each other node in the system as a basic condition for node consensus in the blockchain.
Further, based on the blockchain system shown in fig. 3, an embodiment of the present application provides a blockchain endorsing method, which may be executed by an endorsing node with an endorsing function specified in the blockchain system, and for convenience of description, the embodiment of the present application uses the node 3 as a designated proxy endorsing node, as shown in fig. 5, and the method includes:
s501: and obtaining a service proposal initiated by a trigger node in the block chain.
Specifically, the service proposal characterizes a certain transaction proposal including information to be uplink initiated by the trigger node, such as a shared account book.
In an optional embodiment, the service proposal may further include a trigger signature of the trigger node for the current service proposal, where the trigger signature may be obtained based on a trigger private key carried by the trigger node and service parameters of the service proposal, so as to be used for verifying the trigger signature carried by the proxy endorsement node when the proxy endorsement node obtains the initiated service proposal, and used for judging validity of the signature of the trigger node itself.
In an optional embodiment, the service proposal may further include a service type corresponding to the current proposal, for example, in the embodiment of the present application, the service types may be respectively expressed as a "read" service type and a "write" service type, where the "read" service type is used to characterize a query operation of the current service proposal on stored specified service data, the "write" service type is used to characterize a modification operation of the current service proposal on stored specified service data, and when the service proposal sent by the current trigger node is obtained, the proxy endorsement node may respond to an endorsement operation to be performed by the current service proposal based on the "write" service type carried by the proxy endorsement node.
In an alternative embodiment, the service proposal may further include a corresponding service timestamp to indicate the corresponding initiation time of the current service proposal.
For example, the proxy endorsement node may receive a service proposal initiated by the trigger node<TRANSACTION,tx,ty,t,c j >σ cj Wherein tx is the service entity of the service proposal, c j The node name of the trigger node is indicated,<>σ cj and the ty is the service type of the service proposal and is the write service type.
S502: based on the intelligent contract, an endorsement request aiming at the service proposal is initiated to N other endorsement nodes in the blockchain, and endorsement signatures of M endorsement nodes are obtained.
Specifically, when the trigger signature and the service timestamp carried in the service proposal are successfully verified by the proxy endorsement node, an endorsement request for the service proposal can be initiated to N other endorsement nodes in the blockchain based on the intelligent contract deployed in the blockchain system to obtain endorsement signatures of M endorsement nodes in the blockchain for the service proposal, wherein M epsilon [1, N ] is the number of endorsement nodes associated with the trigger node, and M is the number of endorsement signatures specified in the intelligent contract.
For example, referring to fig. 6, assuming that the number of endorsement signatures specified in the intelligent contracts is 3, when the corresponding trigger signature and the service timestamp verification are successful in the service proposal obtained by the proxy endorsement node, corresponding endorsement requests can be initiated to other endorsement nodes (node 4-node 6) in the blockchain based on the intelligent contracts deployed in the illustrated blockchain.
It will be appreciated that the aforementioned endorsement node may be each of the other endorsement nodes (node 4-node 6) that initiate the endorsement request, and may also be a proxy endorsement node that performs the current blockchain endorsement method, which is not limiting in this respect.
In an alternative embodiment, corresponding to the system parameters p, g disclosed by the key generation node and the preset secure hash function H, each of the other endorsement or proxy endorsement nodes mentioned above may itself obtain the corresponding endorsement signature in the following manner:
wherein l represents the node identification of the corresponding endorsement node, k l Representing a random number, k, corresponding to the corresponding endorsement node l ∈[1,p-1]，x l And the endorsement private key carried by the corresponding endorsement node is represented and distributed by the key distribution node.
S503: and aggregating the obtained M endorsement signatures to generate corresponding target endorsement signatures.
Further, after the endorsement signature of the specified number of the intelligent contracts is collected, the obtained M endorsement signatures are aggregated based on a multiple signature algorithm, and corresponding target endorsement signatures are generated.
In an alternative embodiment, the metadata r corresponding to the system parameters p, g and the preset secure hash function H disclosed by the key generation node may be randomly generated according to the service proposal based on each endorsement node l The obtained M endorsement signatures are aggregated to generate corresponding target endorsement signatures, specifically, meta information of the obtained M endorsement nodes may be aggregated to aggregate the endorsement signatures of the M endorsement nodes according to the corresponding target meta information obtained by the aggregation operation, to generate corresponding target endorsement signatures, specifically, the target endorsement signatures obtained by the aggregation operation<S,R>σ l As shown in the following formula.
Furthermore, based on the above manner, the M endorsement signatures obtained by the proxy endorsement node respectively determine the endorsement result of each endorsement node, and convert the multiple endorsement results into a single multiple endorsement signature, so that the endorsement results of the M endorsement nodes can be simultaneously represented.
In an optional embodiment, before the target endorsement signature is sent to the consensus nodes in the blockchain, node identifiers of the M endorsement nodes may be further aggregated to generate corresponding target identifier information, where each node identifier is associated with a preset endorsement public key, and by further adding the target identifier information to a data set corresponding to the current service proposal, each consensus node may determine the corresponding M target endorsement public keys based on the carried target identifier information, and verify the endorsement result of the M endorsement nodes based on the verification public key obtained by aggregating the target endorsement public keys.
For example, referring to fig. 7, assuming that in the above process, an endorsement signature of the current service proposal by the proxy endorsement node (node 3) and two endorsement nodes (node 4 and node 5) is obtained, based on the above manner, the proxy endorsement result may aggregate the obtained multiple endorsement signatures based on the obtained multiple endorsement signatures and generate corresponding target endorsement signatures, and based on the respective node identifications of the endorsement nodes, the proxy endorsement node may further generate target identification information characterizing the multiple endorsement node identifications, so that the subsequent consensus node verifies the generated target endorsement signature based on the carried target identification information.
S504: and sending the service proposal carrying the target endorsement signature to the consensus node in the blockchain, so that the consensus node verifies the endorsement results of the M endorsement nodes based on at least M preset endorsement public keys.
Further, the proxy endorsement node broadcasts the service proposal carrying the target endorsement signature to the consensus node cluster in the blockchain, and optionally, the service proposal carrying the target endorsement signature can also be sent to at least one designated consensus node in the cluster, so that the at least one consensus node can be disclosed to the consensus node cluster in the blockchain in a broadcasting mode and the like.
In an alternative embodiment, corresponding to the system parameters p, g disclosed by the key generation node and the preset secure hash function H, the consensus node may determine the verification public key corresponding to the target endorsement signature in the following manner:
wherein y is l Representing a preset endorsement public key of the respective endorsement node, which may be publicly available by the key distribution node as described above, in an alternative embodiment, each endorsement public key is associated with a node identification of the respective endorsement node, each of which may then be based on the obtainingAnd determining and obtaining each endorsement public key corresponding to the corresponding node identifier according to the obtained target identification information so as to aggregate each endorsement public key and obtain a corresponding verification public key.
Further, after obtaining the verification public key, each consensus node verifies the target endorsement signature carried by the current service proposal based on the disclosed system parameters, and in an alternative embodiment, the target endorsement signature may be verified based on a configured verification equation, as follows:
R R g S ＝Y RH(m) mod p
wherein R is target meta information carried by the target endorsement signatures, S is target endorsement signatures corresponding to M endorsement signatures, and p, g and H are respectively disclosed system parameters.
Based on the mode, the consensus node can verify the endorsement results of a plurality of endorsement nodes simultaneously by verifying the target endorsement signature once through the disclosed system parameters, so that a large amount of waiting time caused by multiple times of verification is avoided, and the endorsement verification efficiency of the blockchain is further improved.
Further, referring to fig. 8, after the target endorsement signature is successfully verified by the above-mentioned consensus node, a service block corresponding to the current service proposal can be generated by using a consensus algorithm such as Raft, PBFT, etc., and the service block is put into a currently configured block chain, and after the service block is uplink, the above-mentioned proxy endorsement node can further obtain the latest block from the consensus node synchronously, so as to obtain the execution result of the service proposal initiated by the proxy endorsement node.
Referring to fig. 9, a logic diagram of a blockchain endorsement scenario is provided, where the logic diagram includes a blockchain formed by a plurality of terminal devices or server devices, where each terminal device or server device may be regarded as a corresponding blockchain node included in the blockchain; it is assumed that the blockchain has an intelligent contract installed therein that can be used to share an account book.
As an embodiment, in the above-mentioned blockchain endorsement scenario shown in fig. 9, a target object may construct and initiate a service proposal transmission for storing service data modification to other nodes in the blockchain through a trigger node having a proposal construction function in the blockchain, and collect and aggregate a specified number of endorsement signatures by receiving an endorsement operation of the specified endorsement node of the service proposal on the proposal, so that the service proposal initiated by the target object satisfies an endorsement policy configured in the blockchain.
Referring to fig. 10, a logic diagram of another blockchain endorsement scenario is provided, where the logic diagram includes a plurality of servers and terminal devices added to a blockchain, and each terminal device or server may be regarded as a blockchain node included in the blockchain.
As another embodiment, in the above-mentioned alternative blockchain endorsement scenario shown in fig. 10, based on the blockchain endorsement method proposed by the embodiment of the present application, the terminal device may not need to perform further signature collection work when initiating the specified service proposal T, but collect the endorsement signature S1 of the management server and aggregate the endorsement signature S2 generated by itself in a manner that the logistics server receiving the service proposal endorses the service proposal, and when the aggregation is successful, append the generated target endorsement signature S to the service proposal T and send the target endorsement signature S to the specified audit server.
Further, in the above-mentioned other embodiment, the audit server is based on the verification method provided by the embodiment of the present application, and only needs to perform one verification on the received target endorsement signature S, so that the verification results of the endorsement signatures S1 and S2 can be quickly determined. The method greatly improves the efficiency of endorsement operation before generating the block B, further improves the verification efficiency of endorsement signature by a common node in a block chain, ensures the quick consensus of the initiated service proposal, and on the other hand, based on the method, terminal equipment can quickly obtain the execution result of the current service proposal from the synchronized service block without excessive collection operation, thereby further improving the service experience of a target object on the service executed on the block chain.
Based on the application scenarios presented by the two embodiments, it can be seen that the blockchain endorsement method provided by the application can verify that the current service proposal has obtained endorsement results of a plurality of endorsement nodes through one generated target endorsement signature, so that the problem of increased transmission data volume caused by common addition of the endorsement signatures is avoided, the transmission rate of the current service proposal in a network is improved, and on the other hand, the consensus node can obtain verification results of a plurality of endorsement results only by the aggregated verification public key, thereby greatly shortening the verification time of the endorsement signature in the blockchain and improving the endorsement efficiency of the blockchain.
Based on the same technical concept, an embodiment of the present application provides a schematic structural diagram of a blockchain endorsement device, as shown in fig. 11, the device 1100 includes:
the obtaining module 1101 is configured to obtain a service proposal initiated by a trigger node in a blockchain, where the service proposal includes information to be uplink.
The collection module 1102 is configured to initiate endorsement requests for service proposals to N other endorsement nodes in the blockchain based on the intelligent contract, and obtain endorsement signatures of M endorsement nodes, where M e [1, N ], where each endorsement signature is obtained based on an endorsement private key carried by the corresponding endorsement node;
An aggregation module 1103, configured to aggregate the obtained M endorsement signatures to generate corresponding target endorsement signatures, where the target endorsement signatures represent: endorsement results of the M endorsement nodes;
and the transmission module 1104 is configured to send the service proposal carrying the target endorsement signature to the consensus node in the blockchain, so that the consensus node verifies endorsement results of the M endorsement nodes based on at least M preset endorsement public keys.
Optionally, the service proposal further includes: triggering signature of the triggering node on the service proposal;
the collection module 1102 is specifically configured to, when an endorsement request for a service proposal is initiated to N other endorsement nodes in the blockchain based on the intelligent contract:
and verifying the trigger signature.
And when the trigger signature verification is determined to be successful, based on the intelligent contract, an endorsement request for the service proposal is initiated to N other endorsement nodes in the blockchain.
Optionally, when the obtained M endorsement signatures are aggregated to generate corresponding target endorsement signatures, the aggregation module 1103 is specifically configured to:
and aggregating the meta information carried by each of the M endorsement signatures to obtain corresponding target meta information, wherein each meta information represents: a corresponding endorsement node generates a random data unit for the service proposal;
And based on the target meta information, aggregating the obtained M endorsement signatures to generate corresponding target endorsement signatures.
Optionally, the target endorsement signature carries target meta information;
the delivery module 1104 is specifically configured to, when sending the service proposal carrying the target endorsement signature to the consensus node in the blockchain:
and sending the service proposal carrying the target meta information and the target endorsement signature to an consensus node in the blockchain, so that the consensus node obtains corresponding verification public keys based on at least M preset endorsement public keys, and then verifies endorsement results of the M endorsement nodes based on the target meta information and the verification public keys.
Optionally, before sending the target endorsement signature to at least one consensus node in the blockchain, the aggregation module 1103 is further configured to:
aggregating node identifiers of M endorsement nodes to generate corresponding target identifier information, wherein each node identifier is associated with a preset endorsement public key;
the delivery module 1104 is specifically configured to, when sending the service proposal carrying the target endorsement signature to at least one consensus node in the blockchain:
and sending the service proposal carrying the target identification information and the target endorsement signature to at least one consensus node in the blockchain, so that the at least one consensus node obtains corresponding M target endorsement public keys from at least M preset endorsement public keys based on the carried target identification information, and verifies the target endorsement signature based on the M target endorsement public keys.
Optionally, when the endorsement result of the M endorsement nodes is successfully verified, the consensus node generates a service block containing the service proposal;
the delivery module 1104 is further configured to, after sending the service proposal carrying the target endorsement signature to the consensus node in the blockchain:
and synchronizing the service blocks.
And obtaining an execution result of the service proposal based on the synchronized service block.
The embodiment of the application provides a block chain endorsement method, a device, electronic equipment and a storage medium, wherein the method can be applied to endorsement nodes in a block chain, and concretely, the endorsement nodes applied to the method can initiate corresponding endorsement requests to an appointed number of endorsement nodes in the block chain through deployed intelligent contracts and acquired service proposals, aggregate each endorsement signature when acquiring each endorsement signature responded by the endorsement nodes, generate corresponding target endorsement signatures, and send the target endorsement signatures to consensus nodes in the block chain, so that the consensus nodes verify endorsement results of the endorsement nodes.
Based on the above manner, when a plurality of endorsement signatures are obtained, the embodiment of the application can aggregate the endorsement signatures and generate a corresponding target endorsement signature, so that the service proposal can be proved to be endorsed by a plurality of endorsement nodes by adding the target endorsement signature into the initiated service proposal, and the problem of increased transmission data volume caused by the simultaneous addition of a plurality of endorsement signatures is avoided; on the other hand, the consensus node can verify the endorsement results of the endorsement nodes at the same time only by verifying the target endorsement signature carried by the consensus node once after obtaining the service proposal, so that the problem of long verification time caused by repeated verification of the endorsement signatures is further avoided, and the endorsement efficiency of the blockchain is improved.
Based on the same technical concept, the embodiment of the present application provides a computer device, which may be a terminal device and/or a server, as shown in fig. 12, including at least one processor 1201 and a memory 1202 connected to the at least one processor, where the embodiment of the present application is not limited to a specific connection medium between the processor 1201 and the memory 1202, and in fig. 12, the processor 1201 and the memory 1202 are connected by a bus, for example. The buses may be divided into address buses, data buses, control buses, etc.
In an embodiment of the present application, the memory 1202 stores instructions executable by the at least one processor 1201, and the at least one processor 1201 can perform the steps of the blockchain endorsement method described above by executing the instructions stored by the memory 1202.
Where the processor 1201 is a control center of a computer device, various interfaces and lines may be utilized to connect various portions of the computer device, implementing blockchain endorsements by running or executing instructions stored in the memory 1202 and invoking data stored in the memory 1202. Alternatively, the processor 1201 may include one or more processing units, and the processor 1201 may integrate an application processor that primarily processes operating systems, user interfaces, application programs, and the like, with a modem processor that primarily processes wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 1201. In some embodiments, processor 1201 and memory 1202 may be implemented on the same chip, or they may be implemented separately on separate chips in some embodiments.
The processor 1201 may be a general purpose processor such as a Central Processing Unit (CPU), digital signal processor, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, and may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution.
Memory 1202 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The Memory 1202 may include at least one type of storage medium, which may include, for example, flash Memory, hard disk, multimedia card, card Memory, random access Memory (Random Access Memory, RAM), static random access Memory (Static Random Access Memory, SRAM), programmable Read-Only Memory (Programmable Read Only Memory, PROM), read-Only Memory (ROM), charged erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory), magnetic Memory, magnetic disk, optical disk, and the like. Memory 1202 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 1202 in embodiments of the present application may also be circuitry or any other device capable of performing storage functions for storing program instructions and/or data.
Based on the same inventive concept, an embodiment of the present application provides a computer readable storage medium storing a computer program executable by a computer device, which when run on the computer device, causes the computer device to perform the steps of the blockchain endorsement method described above.
Based on the same inventive concept, embodiments of the present application provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the steps of the blockchain endorsement method described above.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, or as a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
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 stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function 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 (10)

1. A blockchain endorsement method, characterized by being applied to an endorsement node in which an intelligent contract is deployed in a blockchain, comprising:
Acquiring a service proposal initiated by a trigger node in the block chain, wherein the service proposal comprises information to be uplink;
based on the intelligent contract, an endorsement request aiming at the service proposal is initiated to N other endorsement nodes in the blockchain, and endorsement signatures of M endorsement nodes are obtained, wherein M is [1, N ], and each endorsement signature is obtained based on an endorsement private key carried by the corresponding endorsement node;
aggregating the obtained M endorsement signatures to generate corresponding target endorsement signatures, wherein the target endorsement signatures represent: endorsement results of the M endorsement nodes;
and sending the service proposal carrying the target endorsement signature to an consensus node in the blockchain, so that the consensus node verifies endorsement results of the M endorsement nodes based on at least M preset endorsement public keys.
2. The method of claim 1, wherein the service proposal further comprises: the triggering node signs the triggering signature of the service proposal;
then, based on the intelligent contract, initiating an endorsement request for the service proposal to N other endorsement nodes in the blockchain, including:
Verifying the trigger signature;
and when the trigger signature verification is determined to be successful, based on the intelligent contract, an endorsement request for the service proposal is initiated to N other endorsement nodes in the blockchain.
3. The method of claim 2, wherein aggregating the obtained M endorsement signatures to generate corresponding target endorsement signatures, comprises:
and aggregating the meta information carried by each of the M endorsement signatures to obtain corresponding target meta information, wherein each meta information represents: a corresponding endorsement node generates a random data unit for the service proposal;
and based on the target meta information, aggregating the obtained M endorsement signatures to generate corresponding target endorsement signatures.
4. The method of claim 3, wherein the target endorsement signature carries target meta information;
the sending the service proposal carrying the target endorsement signature to a consensus node in the blockchain includes:
and sending the service proposal carrying the target meta information and the target endorsement signature to a consensus node in the blockchain, so that the consensus node obtains corresponding verification public keys based on at least M preset endorsement public keys, and verifies endorsement results of the M endorsement nodes based on the target meta information and the verification public keys.
5. The method of any of claims 1-4, wherein prior to the sending the target endorsement signature to a consensus node in the blockchain, further comprising:
aggregating node identifiers of M endorsement nodes to generate corresponding target identifier information, wherein each node identifier is associated with a preset endorsement public key;
the sending the service proposal carrying the target endorsement signature to a consensus node in the blockchain includes:
and sending the service proposal carrying the target identification information and the target endorsement signature to a consensus node in the blockchain, so that the consensus node obtains corresponding M target endorsement public keys from at least M preset endorsement public keys based on the carried target identification information, and verifies endorsement results of the M endorsement nodes based on the M target endorsement public keys.
6. The method of claim 5, wherein the consensus node generates a traffic block containing the traffic proposal when endorsement results of the M endorsement nodes are verified successfully;
after the service proposal carrying the target endorsement signature is sent to the consensus node in the blockchain, the method further comprises:
Synchronizing the service blocks;
and obtaining an execution result of the service proposal based on the synchronized service block.
7. A blockchain endorsement device, characterized in that it is applied to an endorsement node in which an intelligent contract is deployed in a blockchain, comprising:
the system comprises an acquisition module, a trigger node and a service proposal generation module, wherein the acquisition module is used for acquiring a service proposal initiated by the trigger node in the block chain, and the service proposal contains information to be uplinked;
the acquisition module is used for initiating endorsement requests aiming at the service proposal to N other endorsement nodes in the blockchain based on the intelligent contract to obtain endorsement signatures of M endorsement nodes, wherein M epsilon [1, N ], and each endorsement signature is obtained based on an endorsement private key carried by the corresponding endorsement node;
the aggregation module is used for aggregating the obtained M endorsement signatures to generate corresponding target endorsement signatures, and the target endorsement signatures represent: endorsement results of the M endorsement nodes;
and the transmission module is used for transmitting the service proposal carrying the target endorsement signature to the consensus node in the blockchain, so that the consensus node verifies the endorsement results of the M endorsement nodes based on at least M preset endorsement public keys.
8. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of any of claims 1-6 when the program is executed.
9. A computer readable storage medium storing computer instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1-6.
10. A computer program product, characterized in that the computer program product, when called by a computer, causes the computer to perform the method according to any of claims 1-6.
CN202210560871.3A 2022-05-23 2022-05-23 Block chain endorsement method and device, electronic equipment and storage medium Pending CN117155574A (en)

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