CN113672937A - Block chain link point - Google Patents
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- CN113672937A CN113672937A CN202110964774.6A CN202110964774A CN113672937A CN 113672937 A CN113672937 A CN 113672937A CN 202110964774 A CN202110964774 A CN 202110964774A CN 113672937 A CN113672937 A CN 113672937A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/57—Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
- G06F11/3006—Monitoring arrangements specially adapted to the computing system or computing system component being monitored where the computing system is distributed, e.g. networked systems, clusters, multiprocessor systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3055—Monitoring arrangements for monitoring the status of the computing system or of the computing system component, e.g. monitoring if the computing system is on, off, available, not available
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/542—Event management; Broadcasting; Multicasting; Notifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1863—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast comprising mechanisms for improved reliability, e.g. status reports
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- 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
Abstract
The invention provides a block chain link point which is applied to a block chain system and at least comprises a broadcast processing module. The broadcast processing module at least comprises an identification determination unit. The identifier determining unit is configured to, for each neighboring block chain node, form a trusted identifier corresponding to the neighboring block chain node when a reference trusted state of the neighboring block chain node represents that the neighboring block chain node is trusted; and when the reference credibility state of the adjacent blockchain node represents that the adjacent blockchain node is not credible, forming an unavailable beacon corresponding to the adjacent blockchain node. By the technical scheme of the invention, the block chain node can more accurately know the credible state of each block chain node in the block chain system.
Description
The invention relates to a method for determining the credible state of a block chain node, a block chain link point and a divisional application of a system, wherein the application number is 201810575106.2, the application date is 2018, 6.6.8, and the application type is the invention.
Technical Field
The invention relates to the technical field of block chains, in particular to a block chain link point.
Background
A blockchain is a decentralized storage and computing technology, and a blockchain system is generally composed of a plurality of blockchain nodes interconnected by communication links, and each blockchain node can provide a corresponding service or issue a contract task. In order to improve the security of the blockchain system, each blockchain node in the blockchain system needs to know the trusted status of itself and other blockchain nodes in the blockchain system.
The chinese invention with application number CN201710358355.1 discloses a mobile terminal self-organizing network positioning method based on block chains, where the mobile terminal network includes multiple nodes, node information of the nodes is stored in the form of blocks, the multiple blocks form a block chain, block data in the block chain is node information of the nodes, and the node information at least includes relative position information with adjacent nodes, including: searching relative position information of adjacent nodes in the block chain; and acquiring the relative position between the nodes and the relative position in the block chain according to the relative position information of the adjacent nodes in the block chain. The invention can regard the blocks in the block chain as the credible nodes of the consensus mechanism, and enables the users in the mobile terminal network to accurately position the position information of the users in the communication network under the condition of not depending on a credible third party and under the condition of no GPS signal or weak GPS signal according to the characteristics of the block chain.
The invention relates to a trust value calculation method based on dynamic regulation of a Beta credit system, which is based on the Beta credit system and initializes the trust value of each node of a network, wherein the trust value is calculated by a trust value calculation method based on the Beta credit system; after the nodes are interacted, calculating the trust value T of the node through the following formula, and calculating the average trust value of the neighbor node; determining a credible line f of the node according to the average credible value of the neighbor node; setting a buffer area, wherein the upper limit of the buffer area is a credible line f; a lower limit u of the buffer; and judging whether the node is credible or not according to the credible line f and the lower limit u of the buffer area.
Currently, each block chain link in a block chain system is connected with a computing cluster composed of a plurality of computing nodes, the computing cluster can collect operation data of each block chain node, calculate a trusted state of each block chain node according to the operation data of each block chain node, and then feed back the trusted state of each block chain node to each block chain node in the block chain system.
In the above technical solution, the security of the computing cluster directly affects the trusted state of each block chain node obtained by the computing cluster, which may cause that the block chain node in the block chain system cannot accurately know the trusted state of each block chain node in the block chain system.
The problem that a block link point in a block chain system cannot determine the trusted state of each block link point in the block chain system exists in the prior art, and a block link point is needed to enable the block link point in the block chain system to determine whether each block chain node in the block chain system is trusted or not, so that the invention provides the block link point capable of accurately knowing the trusted state of each block chain node in the block chain system.
Disclosure of Invention
The embodiment of the invention provides a method, a block chain link point and a system for determining the credible state of a block chain node, wherein the block chain node can more accurately know the credible state of each block chain node in a block chain system.
In a first aspect, the present invention provides a method for determining a trusted status of a blockchain node, applied to a current blockchain node of a blockchain system, including:
acquiring operation data of at least one adjacent block chain node adjacent to the current block chain link node in the block chain system;
determining a reference credibility state of each adjacent blockchain node according to the operation data of each adjacent blockchain node;
forming a current broadcast message according to the reference credibility state of each adjacent block chain node, and broadcasting the current broadcast message;
receiving at least one reference broadcast message respectively broadcast by each adjacent block chain node;
and determining the credible state of each block chain node in the block chain system according to the current broadcast message and each reference broadcast message.
Preferably, the first and second electrodes are formed of a metal,
when the number of the neighboring block chain nodes neighboring the current block chain node is not less than 2, the receiving at least one reference broadcast message respectively broadcast by each of the neighboring block chain nodes further includes: broadcasting the received reference broadcast messages.
Preferably, the first and second electrodes are formed of a metal,
the current broadcast message carries a current node identifier of the current block chain node;
before the determining the trusted status of each blockchain node in the blockchain system according to the current broadcast message and each reference broadcast message, further includes:
according to the reference node identifiers carried by the received reference broadcast messages respectively, performing de-duplication processing on the current broadcast message and the received reference broadcast messages to extract at least one target broadcast message;
determining a trusted status of each blockchain node in the blockchain system according to the current broadcast message and each reference broadcast message includes: and determining the credible state of each blockchain node in the blockchain system according to each target broadcast message.
Preferably, the first and second electrodes are formed of a metal,
the forming a current broadcast message according to the reference trusted status of each of the neighboring blockchain nodes includes:
for each adjacent blockchain node, when the reference credibility state of the adjacent blockchain node represents that the adjacent blockchain node is credible, forming a credible identification corresponding to the adjacent blockchain node; when the reference credibility state of the adjacent blockchain node represents that the adjacent blockchain node is not credible, forming an unavailable beacon corresponding to the adjacent blockchain node;
for each adjacent blockchain node, forming a credible record by using the credible identification/non-credible identification of the adjacent blockchain node and the reference node identification of the adjacent blockchain node;
forming a current broadcast message by using each trusted record and a current node identifier of the current block chain node;
then, the determining the trusted status of each blockchain node in the blockchain system according to each target broadcast message includes:
analyzing each target broadcast message to obtain at least one trusted record;
analyzing each piece of credible record to determine a first voting number of the credible identification corresponding to each node identification and a second voting number of the non-credible identification corresponding to each node identification;
calculating the confidence of each block chain node in the block chain system according to the first voting number and the second voting number respectively corresponding to each node identifier;
and determining the credibility state of each blockchain node in the blockchain system according to the confidence coefficient of each blockchain node.
Preferably, the first and second electrodes are formed of a metal,
determining a trusted state of each blockchain node in the blockchain system according to the confidence of each blockchain node includes:
for each block chain node, determining the block chain node as a trusted node when the confidence coefficient of the block chain node is not less than a set threshold, and determining the block chain node as an untrusted node when the confidence coefficient of the block chain node is less than the set threshold;
or the like, or, alternatively,
sequencing the calculated confidence degrees in a descending order, sequentially selecting a set number of confidence degrees according to a sequencing result, determining the block link points corresponding to the selected confidence degrees as credible nodes, and determining the block link points corresponding to the unselected confidence degrees as incredible nodes.
In a second aspect, the present invention provides a block chain link point, applied to a block chain system, including:
the data acquisition module is used for acquiring the operation data of at least one adjacent block chain node adjacent to the current block chain node in the block chain system;
the trusted computing module is used for determining the reference trusted state of each adjacent block chain node according to the running data of each adjacent block chain node;
the broadcast processing module is used for forming a current broadcast message according to the reference credibility state of each adjacent block chain node and broadcasting the current broadcast message; receiving at least one reference broadcast message respectively broadcast by each adjacent block chain node;
and the state determining module is used for determining the credible state of each block chain node in the block chain system according to the current broadcast message and each reference broadcast message.
Preferably, the first and second electrodes are formed of a metal,
the broadcast processing module is further configured to broadcast each received reference broadcast message when the number of the neighboring block chain nodes neighboring the current block chain node is not less than 2.
Preferably, the first and second electrodes are formed of a metal,
further comprising: a deduplication processing module; wherein the content of the first and second substances,
the de-duplication processing module is used for performing de-duplication processing on the current broadcast message and each received reference broadcast message according to the reference node identification carried by each received reference broadcast message to extract at least one target broadcast message;
the state determining module is configured to determine, according to each target broadcast message, a trusted state of each blockchain node in the blockchain system.
Preferably, the first and second electrodes are formed of a metal,
the broadcast processing module includes: an identification determination unit, a recording composition unit, and a broadcast composition unit; wherein the content of the first and second substances,
the identifier determining unit is configured to, for each of the neighboring blockchain nodes, form a trusted identifier corresponding to the neighboring blockchain node when the reference trusted state of the neighboring blockchain node represents that the neighboring blockchain node is trusted; when the reference credibility state of the adjacent blockchain node represents that the adjacent blockchain node is not credible, forming an unavailable beacon corresponding to the adjacent blockchain node;
the record forming unit is configured to form a trusted record by using, for each of the neighboring block chain nodes, the trusted identifier/untrusted identifier of the neighboring block chain node and the reference node identifier of the neighboring block chain node;
the broadcast composition unit is used for forming a current broadcast message by using each trusted record and the current node identification of the current block link node;
then, the state determination module includes: the system comprises a broadcast analysis unit, a record analysis unit, a confidence coefficient calculation unit and a state determination unit; wherein the content of the first and second substances,
the broadcast analysis unit is used for analyzing each target broadcast message to obtain at least one trusted record;
the record analysis unit is configured to analyze each piece of the trusted record to determine a first voting number of the trusted identifier corresponding to each node identifier, and determine a second voting number of the untrusted identifier corresponding to each node identifier;
the confidence coefficient calculating unit is configured to calculate a confidence coefficient of each block chain node in the block chain system according to the first voting number and the second voting number respectively corresponding to each node identifier;
the state determining unit is configured to determine a trusted state of each blockchain node in the blockchain system according to the confidence of each blockchain node.
In a third aspect, an embodiment of the present invention provides a block chain system, including at least two block chain link points as described in any one of the second aspects, wherein each of the block chain nodes are interconnected through a communication link.
The embodiment of the invention provides a method for determining the credibility state of a block chain node, the block chain node and a block chain system, the method is applied to a current block chain node of the block chain system, the block chain system has one or more adjacent block chain nodes adjacent to the current block chain node, the current block chain node can determine the reference credibility state of each adjacent block chain node according to the operation data of each adjacent block chain node by collecting the operation data of each adjacent block chain node, after forming and broadcasting the current broadcast message according to the reference credibility state of each adjacent block chain node, each adjacent block chain node can know the reference credibility state of each adjacent block chain node relative to the current block chain node according to the current broadcast message, correspondingly, after the current block chain node receives each reference broadcast message broadcasted by each adjacent block chain node adjacent to the current block chain node, the current broadcast message and each reference broadcast message received by the current broadcast message can reflect the reference credibility state of one block chain node relative to another block chain node under every two adjacent block chain nodes in the block chain system, and the current block chain node can determine the credibility state of each block chain node in the block chain system according to the current broadcast message and each reference broadcast message, and does not depend on an external computing cluster, so that the block chain node can know the credibility state of each block chain node in the block chain system more accurately.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a method for determining a trusted status of a blockchain node according to an embodiment of the present invention;
fig. 2 is a flowchart of another method for determining a trusted status of a blockchain node according to an embodiment of the present invention;
FIG. 3 is a block link point configuration according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another blockchain node according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a method for determining a trusted status of a blockchain node, which is applied to a current blockchain node of a blockchain system, and includes:
103, forming a current broadcast message according to the reference credibility state of each adjacent block chain node, and broadcasting the current broadcast message;
and 105, determining the credible state of each block chain node in the block chain system according to the current broadcast message and each reference broadcast message.
As shown in fig. 1, the method is applied to a current blockchain node of a blockchain system, where the blockchain system has one or more neighboring blockchain nodes neighboring to the current blockchain node, the current blockchain node can acquire operation data of each neighboring blockchain node, determine a reference trusted state of each neighboring blockchain node according to the operation data of each neighboring blockchain node, form and broadcast a current broadcast message according to the reference trusted state of each neighboring blockchain node, and each neighboring blockchain node can know the reference trusted state of each neighboring blockchain node relative to the current blockchain node according to the current broadcast message, and accordingly, after the current blockchain node receives each reference broadcast message broadcasted by each neighboring blockchain node neighboring to the current blockchain node, the current broadcast message and each reference broadcast message received by the current broadcast message can reflect each two neighboring blockchain nodes in the blockchain system The current block link point can determine the credibility state of each block link node in the block link system according to the current broadcast message and each reference broadcast message, and does not depend on an external computing cluster, so that the block link node can know the credibility state of each block link node in the block link system more accurately.
In the foregoing embodiment, determining the trusted state of the blockchain node specifically refers to determining whether the blockchain node is a trusted node.
In the above embodiments, the neighboring block link node adjacent to the current block link point specifically refers to a block link node that is adjacent to the current block link point on a geographical or communication link in the block link system and is capable of receiving the broadcast message broadcasted by the current block link node and the current block link point is capable of receiving the broadcast message broadcasted by the current block link node.
It should be understood by those skilled in the art that the method for determining the trusted status of the blockchain node in the blockchain system according to the embodiments of the present invention may be applied to each blockchain node in the blockchain system, and for convenience of description, the method is only described when the method is implemented on a current blockchain node, that is, a method step executed on the current blockchain node, and other blockchain nodes except the current blockchain node in the blockchain system may execute the same or similar content as the step.
When any one of the blockchain nodes in the blockchain system is used as a current blockchain node and other blockchain nodes in the blockchain system are all adjacent to the current blockchain node, the embodiment shown in fig. 1 enables any one of the current blockchain nodes in the blockchain system to more accurately know the trusted state of each blockchain node in the blockchain system, that is, each blockchain node in the blockchain system can more accurately know the trusted state of each blockchain node in the blockchain system through the embodiment shown in fig. 1. However, the number of the blockchain nodes included in the blockchain system in a part of the traffic scenarios is large, and for any blockchain node of the blockchain system, there are usually a plurality of adjacent blockchain nodes adjacent thereto, and there are also a large number of blockchain nodes not adjacent to the blockchain node.
Therefore, in an embodiment of the present invention, when the number of the neighboring blockchain nodes neighboring to the current blockchain node is not less than 2, the receiving at least one reference broadcast message respectively broadcast by each of the neighboring blockchain nodes further includes: broadcasting the received reference broadcast messages.
In the above embodiment, when there are a plurality of neighboring blockchain nodes adjacent to a blockchain node of the blockchain system and there are one or more non-neighboring blockchain nodes not adjacent to the neighboring blockchain node, each blockchain node of the blockchain system broadcasts again the broadcast messages (reference broadcast messages) received by the blockchain node (i.e. the broadcast message broadcast by any first neighboring blockchain node adjacent to the current blockchain node can be broadcast to each second neighboring blockchain node adjacent to the current blockchain node through the current blockchain node), so that the broadcast message (current broadcast message) formed by one blockchain node can gradually propagate to each non-neighboring blockchain node not adjacent to the current blockchain node in the blockchain system, and further each neighboring blockchain node adjacent to the blockchain node can be reliably propagated with respect to the reference blockchain node of the blockchain node The state can be known by each blockchain node in the blockchain system.
In one possible implementation, the block-link point may further perform a corresponding self-determination process, that is, if and only if it is determined that there are a plurality of neighboring block-link nodes in the current block-link point, the reference broadcast message received by the block-link point is broadcasted again.
For example, the blockchain system includes blockchain nodes A, B, C, D, a adjacent to B, B adjacent to C, C adjacent to D; thus, C may determine the reference trust states of B and D, i.e., C may determine the reference trust states of D and B with respect to C, respectively, C may broadcast the broadcast message Y to B, D after forming the broadcast message Y according to B, D from the reference trust states with respect to C, B may broadcast the broadcast message Y again after receiving the broadcast message Y broadcast by C adjacent thereto, such that a adjacent to B also receives the broadcast message Y, and thus a may know the reference trust states of B and D with respect to C, respectively, through the broadcast message Y.
Therefore, when a plurality of adjacent blockchain nodes exist in one blockchain node of the blockchain system and one or more non-adjacent blockchain nodes which are not adjacent to the node exist, any blockchain node in the blockchain system can know the credible state of each blockchain node in the blockchain system more accurately.
When any current node in the blockchain system broadcasts again the reference broadcast messages received by the current node, the reference broadcast messages formed by the same blockchain node may be received by the same blockchain node for multiple times. For example, the blockchain system includes blockchain nodes a, B, C, D, where B and C are all adjacent to D, and B, C are all adjacent to a; thus, B, C broadcasts the received broadcast message X to D when it receives one broadcast message X formed and broadcast by a, which results in D receiving multiple times the broadcast message X formed by a and broadcast by B, C. The subsequent repeatedly received broadcast messages do not have substantial reference meanings, so that the reference broadcast messages received by the current block chain node and the formed current broadcast messages need to be subjected to de-duplication processing, and the credible state of each block chain node is accurately determined. Specifically, in an embodiment of the present invention, the current broadcast message carries a current node identifier of the current block chain node;
before the determining the trusted status of each blockchain node in the blockchain system according to the current broadcast message and each reference broadcast message, further includes:
according to the reference node identifiers carried by the received reference broadcast messages respectively, performing de-duplication processing on the current broadcast message and the received reference broadcast messages to extract at least one target broadcast message;
determining a trusted status of each blockchain node in the blockchain system according to the current broadcast message and each reference broadcast message includes: and determining the credible state of each blockchain node in the blockchain system according to each target broadcast message.
Each blockchain node in the blockchain system determines a reference credibility state of each adjacent blockchain node adjacent to the blockchain node, and when a current blockchain node is invaded by an invader and causes the previous blockchain node to be untrustworthy, the determined reference credibility state of each adjacent blockchain node is also reduced in credibility, so that the current blockchain node possibly has different reference credibility states relative to a plurality of different adjacent blockchain nodes adjacent to the current blockchain node. Therefore, in an embodiment of the present invention, the forming a current broadcast message according to the reference trusted status of each of the neighboring blockchain nodes includes:
for each adjacent blockchain node, when the reference credibility state of the adjacent blockchain node represents that the adjacent blockchain node is credible, forming a credible identification corresponding to the adjacent blockchain node; when the reference credibility state of the adjacent blockchain node represents that the adjacent blockchain node is not credible, forming an unavailable beacon corresponding to the adjacent blockchain node;
for each adjacent blockchain node, forming a credible record by using the credible identification/non-credible identification of the adjacent blockchain node and the reference node identification of the adjacent blockchain node;
forming a current broadcast message by using each trusted record and a current node identifier of the current block chain node;
then, the determining the trusted status of each blockchain node in the blockchain system according to each target broadcast message includes:
analyzing each target broadcast message to obtain at least one trusted record;
analyzing each piece of credible record to determine a first voting number of the credible identification corresponding to each node identification and a second voting number of the non-credible identification corresponding to each node identification;
calculating the confidence of each block chain node in the block chain system according to the first voting number and the second voting number respectively corresponding to each node identifier;
and determining the credibility state of each blockchain node in the blockchain system according to the confidence coefficient of each blockchain node.
As will be understood by those skilled in the art, when the current blockchain node determines the reference Trusted status of each neighboring blockchain node according to the operation data of each neighboring blockchain node, the operation data mainly includes a real-time hash value of the application software executed by the corresponding neighboring blockchain node, a current storage address of the executed application program, a user triggering the execution of the corresponding application program, and the like, and these operation data may be recorded by a TPM (Trusted platform module) chip disposed in the neighboring blockchain node. The current block chain node mainly collects operation data recorded by the TPM chip, and then detects whether a real-time abstract value of an application program operated on the adjacent block chain node is the same as a pre-stored reference abstract value, whether a standard storage address of the operated application program is the same as a current storage address, and whether a user triggering the operation of the corresponding application program has the authority of operating the corresponding reference program, so that the reference credibility state of the adjacent block chain node is determined.
Correspondingly, when detecting that the real-time abstract value of the application program operated on one adjacent block chain node is different from the pre-stored reference abstract value, or detecting that the standard storage address of the application program operated on the block chain node is different from the current storage address, or detecting whether a user triggering the operation of the corresponding application program has the authority of operating the corresponding reference program, the reference credibility state of the adjacent block chain node is represented as incredible, and at the moment, an incredible identification corresponding to the adjacent block chain node can be formed; otherwise, a trusted identifier corresponding to the neighboring blockchain node may be formed.
Obviously, when the first voting number corresponding to a node identifier is relatively large and the second voting number corresponding to the node identifier is relatively small, the higher the confidence corresponding to the device of the node for evaluating the credibility state of the block link point is; conversely, when the first voting number corresponding to a node identifier is relatively small and the second voting number corresponding to the node identifier is relatively large, it indicates that the confidence corresponding to the device of the node for evaluating the confidence state of the block link point is lower.
In summary, after determining the reference trusted status of each adjacent block chain node adjacent to the current block chain node, the current block chain node forms a corresponding trusted identifier or non-trusted identifier according to the reference trusted status of the current block chain node, and forms a trusted record with the reference node identifier of the adjacent block chain node corresponding to the current block chain node by using the formed trusted identifier or non-trusted identifier; in the subsequent process, after analyzing each credible record carried by each item label broadcast message, the confidence coefficient of each block chain node can be calculated by using the first voting quantity and the second voting quantity respectively corresponding to each node identifier, so that the credible state of each block chain node is objectively and accurately determined by the confidence coefficient respectively corresponding to each block chain node.
Specifically, in the above embodiment, the confidence level of each blockchain node in the blockchain system may be calculated by the following formula:
and the rho i represents the confidence coefficient of the block chain node corresponding to the ith node identifier, the alpha i represents the first voting quantity corresponding to the ith node identifier, and the beta i represents the second voting quantity corresponding to the ith node identifier.
Based on the above embodiment, determining the trusted state of each blockchain node in the blockchain system according to the confidence of each blockchain node may be implemented by any one of the following two ways:
in the mode 1, for each block chain node, when the confidence of the block chain node is not less than a set threshold, the block chain node is determined to be a trusted node, and when the confidence of the block chain node is less than the set threshold, the block chain node is determined to be an untrusted node.
And 2, sequencing the calculated confidence degrees in a descending order, sequentially selecting a set number of confidence degrees according to a sequencing result, determining the block link points corresponding to the selected confidence degrees as credible nodes, and determining the block link points corresponding to the unselected confidence degrees as non-credible nodes. In the method 2, the set number can be determined according to the characteristic that the lie cost approaches 90%, and the product of the total number of nodes of all the blockchain nodes in the blockchain system and 10%.
For more clearly illustrating the technical solutions and advantages of the present invention, the following specifically uses a blockchain system to include blockchain nodes A, B, C, D, E, where a is adjacent to B, C and D are both adjacent to B, and C and D are both adjacent to E, and for convenience of description, only uses a blockchain node A, B, C, D to cooperate with a current blockchain node E to determine the trusted status of each blockchain node through the blockchain node E, as shown in fig. 2, specifically may include the following steps:
In step 203, each broadcast message may carry a node identifier of a block link point of the broadcast message formed by a corresponding trusted record, and each trusted record is composed of a node identifier of a corresponding adjacent block link node and a trusted identifier or an un-trusted identifier formed according to a trusted status of the block link node.
In step 206, E performs a de-duplication process on each received broadcast message and the broadcast message formed thereby to extract at least one target broadcast message.
In step 206, E needs to repeatedly receive the first broadcast message and the second broadcast message broadcast by C and D, respectively, and after the deduplication processing, E may extract a first broadcast message, a second broadcast message, a third broadcast message, a fourth broadcast message, and a fifth broadcast message.
At step 210, a confidence level of A, B, C, D, E is determined for A, B, C, D, E in the blockchain system.
In step 210, i.e. according to the confidence level of A, B, C, D, E, A, B, C, D, E in the blockchain system is determined as a trusted node or an untrusted node, respectively.
The embodiment of the invention provides a block chain node. The device embodiments may be implemented by software, or by hardware, or by a combination of hardware and software. From the hardware aspect, the block link node may include basic hardware such as a processor, a memory, a network interface, and a nonvolatile memory, and may further include other hardware such as a forwarding chip responsible for processing a packet and a TPM chip for recording operation data of the block link node. Taking a software implementation as an example, as shown in fig. 3, as a logical apparatus, the apparatus is formed by reading, by a CPU of a device in which the apparatus is located, corresponding computer program instructions in a non-volatile memory into a memory for execution. The block chain node provided in this embodiment is applied to a block chain system, and includes:
a data acquisition module 301, configured to acquire operation data of at least one adjacent blockchain node adjacent to the current blockchain node in the blockchain system;
a trusted computing module 302, configured to determine, according to the operation data of each neighboring blockchain node, a reference trusted state of each neighboring blockchain node;
a broadcast processing module 303, configured to form a current broadcast message according to the reference trusted status of each neighboring block chain node, and broadcast the current broadcast message; receiving at least one reference broadcast message respectively broadcast by each adjacent block chain node;
a state determining module 304, configured to determine, according to the current broadcast message and each of the reference broadcast messages, a trusted state of each blockchain node in the blockchain system.
In an embodiment of the present invention, the broadcast processing module 303 is further configured to broadcast each received reference broadcast message when the number of the neighboring block chain nodes adjacent to the current block chain node is not less than 2.
Referring to fig. 4, in an embodiment of the present invention, the block chain node further includes: a deduplication processing module 401; wherein the content of the first and second substances,
the deduplication processing module 401 is configured to perform deduplication processing on the current broadcast message and each received reference broadcast message according to a reference node identifier carried by each received reference broadcast message, so as to extract at least one target broadcast message;
then, the state determining module 304 is configured to determine a trusted state of each blockchain node in the blockchain system according to each target broadcast message.
In an embodiment of the present invention, the broadcast processing module 303 includes: an identification determination unit, a recording composition unit, and a broadcast composition unit; wherein the content of the first and second substances,
the identifier determining unit is configured to, for each of the neighboring blockchain nodes, form a trusted identifier corresponding to the neighboring blockchain node when the reference trusted state of the neighboring blockchain node represents that the neighboring blockchain node is trusted; when the reference credibility state of the adjacent blockchain node represents that the adjacent blockchain node is not credible, forming an unavailable beacon corresponding to the adjacent blockchain node;
the record forming unit is configured to form a trusted record by using, for each of the neighboring block chain nodes, the trusted identifier/untrusted identifier of the neighboring block chain node and the reference node identifier of the neighboring block chain node;
the broadcast composition unit is used for forming a current broadcast message by using each trusted record and the current node identification of the current block link node;
then, the status determination module 304 includes: the system comprises a broadcast analysis unit, a record analysis unit, a confidence coefficient calculation unit and a state determination unit; wherein the content of the first and second substances,
the broadcast analysis unit is used for analyzing each target broadcast message to obtain at least one trusted record;
the record analysis unit is configured to analyze each piece of the trusted record to determine a first voting number of the trusted identifier corresponding to each node identifier, and determine a second voting number of the untrusted identifier corresponding to each node identifier;
the confidence coefficient calculating unit is configured to calculate a confidence coefficient of each block chain node in the block chain system according to the first voting number and the second voting number respectively corresponding to each node identifier;
the state determining unit is configured to determine a trusted state of each blockchain node in the blockchain system according to the confidence of each blockchain node.
Because the information interaction, execution process, and other contents between the units in the device are based on the same concept as the method embodiment of the present invention, specific contents may refer to the description in the method embodiment of the present invention, and are not described herein again.
An embodiment of the present invention provides a block chain system, including at least two block chain nodes provided in any one embodiment of the present invention, where each of the block chain nodes is interconnected through a communication link. As will be appreciated by those skilled in the art, in an actual traffic scenario, the blockchain system includes a number of blockchain link points much greater than 2.
In the block chain system provided in the above embodiment, a service program for implementing block chain tamper resistance and block chain verification, and a service interface for providing users such as securities, banking systems, e-commerce and the like with intelligent contract or shared service data may be further deployed, and after the trusted state of each block chain node of each block chain system is determined, that is, after each block chain node in the block chain system is determined as a trusted node or an untrusted node, the determined trusted nodes may be used to execute corresponding tasks or provide corresponding services or execute an intelligent contract issued by any trusted node; conversely, when a blockchain node is determined to be an untrusted node, the service provided by the node, the shared data, or the intelligent contract issued by the node is invalidated, and at the same time, the contract request issued by the user or other trusted node reaches the untrusted node, the service request is terminated.
In a specific service scenario, when the block chain system provided by the above embodiment of the present invention provides a validation service to an external computing cluster, after receiving a validation request sent by the external computing cluster, first determining, by the method provided by the embodiment of the present invention, a trusted state of each block chain link point of the block chain system, that is, determining, by the method provided by the embodiment of the present invention, each block chain link point of the block chain system as a trusted node or an untrusted node, respectively, terminating the voting right of each untrusted node, and selecting only a certain number of trusted nodes from the determined trusted nodes to complete the validation service quickly according to the received validation request.
In summary, the embodiments of the present invention have at least the following advantages:
1. in an embodiment of the present invention, the block chain system has one or more neighboring block chain nodes adjacent to a current block chain node, the current block chain node can acquire operation data of each neighboring block chain node, determine a reference credibility state of each neighboring block chain node according to the operation data of each neighboring block chain node, form and broadcast a current broadcast message according to the reference credibility state of each neighboring block chain node, and each neighboring block chain node can know the reference credibility state of each neighboring block chain node relative to the current block chain node according to the current broadcast message, and accordingly, after the current block chain node receives each piece of reference broadcast message broadcast by each neighboring block chain node adjacent to the current block chain node, the current broadcast message and each piece of reference broadcast message received by the current block chain node can reflect that each two neighboring block chain nodes in the block chain system are adjacent to each other, the block chain node can determine the credible state of each block chain node in the block chain system according to the current broadcast message and each reference broadcast message, and does not depend on an external computing cluster, so that the block chain node can know the credible state of each block chain node in the block chain system more accurately.
2. In an embodiment of the present invention, when a block link point of a block link system has a plurality of neighboring block link nodes adjacent to the block link point, and one or more non-neighboring block link nodes not adjacent to the neighboring block link node exist, each block link node of the block link system broadcasts each broadcast message received by the block link node again, so that the broadcast message formed by one block link node can be gradually propagated to each non-neighboring block link node not adjacent to the neighboring block link node in the block link system, and further, the reference trusted status of each neighboring block link node adjacent to the block link point with respect to the block link point can be known by each block link node in the block link system.
3. In one embodiment of the invention, after the reference credibility state of each adjacent block chain node adjacent to the current block chain node is determined, a corresponding credible identifier or an unavailable identifier is formed according to the reference credibility state of the current block chain node, and a credible record is formed by utilizing the formed credible identifier or unavailable identifier and the reference node identifier of the adjacent block chain node corresponding to the formed credible identifier or unavailable identifier; in the subsequent process, after analyzing each credible record carried by each item label broadcast message, the confidence coefficient of each block chain node can be calculated by using the first voting quantity and the second voting quantity respectively corresponding to each node identifier, so that the credible state of each block chain node is objectively and accurately determined by the confidence coefficient respectively corresponding to each block chain node.
4. In an embodiment of the present invention, when providing a validation service to an external computing cluster based on the blockchain system provided in the above embodiment of the present invention, after receiving a validation request sent by the external computing cluster, first determining, by the method provided in the embodiment of the present invention, a trusted state of each blockchain link point of the blockchain system, that is, determining, by the method provided in the embodiment of the present invention, each blockchain link point of the blockchain system as a trusted node or an untrusted node, respectively, terminating a voting right of each untrusted node, and selecting only a certain number of trusted nodes from the determined trusted nodes to quickly complete a validation service according to the received validation request.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement "comprises an" does not exclude the presence of other similar elements in the process, method, article, or apparatus that comprises the element.
Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A block chain node is applied to a block chain system and comprises a broadcast processing module,
the broadcast processing module includes at least an identification determination unit,
the identifier determining unit is configured to, for each neighboring block chain node, form a trusted identifier corresponding to the neighboring block chain node when a reference trusted state of the neighboring block chain node represents that the neighboring block chain node is trusted; and when the reference credibility state of the adjacent blockchain node represents that the adjacent blockchain node is not credible, forming an unavailable beacon corresponding to the adjacent blockchain node.
2. A block link point according to claim 1, wherein the block link node further comprises a data acquisition module,
the data acquisition module is used for acquiring the operation data of at least one adjacent block chain node adjacent to the current block chain node in the block chain system.
3. A block link point according to claim 2, wherein the block link node further comprises a trusted computing module,
and the trusted computing module is used for determining the reference trusted state of each adjacent block chain node according to the running data of each adjacent block chain node.
4. The blockchain node of claim 3, wherein the broadcast processing module is configured to form a current broadcast message according to the reference trusted status of each of the neighboring blockchain nodes, and broadcast the current broadcast message; and receiving at least one reference broadcast message respectively broadcast by each adjacent block chain node.
5. The blockchain node of claim 4, wherein the blockchain node further comprises a state determination module,
the state determining module is configured to determine a trusted state of each blockchain node in the blockchain system according to the current broadcast message and each reference broadcast message.
6. The blockchain node of claim 5, wherein the broadcast processing module is further configured to broadcast each received reference broadcast message when the number of the neighboring blockchain nodes neighboring the current block link point is not less than 2.
7. A block link point as in claim 6, further comprising: a deduplication processing module; wherein the content of the first and second substances,
the de-duplication processing module is used for performing de-duplication processing on the current broadcast message and each received reference broadcast message according to the reference node identification carried by each received reference broadcast message to extract at least one target broadcast message;
the state determining module is configured to determine, according to each target broadcast message, a trusted state of each blockchain node in the blockchain system.
8. The blockchain node of claim 7, wherein the broadcast processing module further includes a record component unit,
the record forming unit is configured to form a trusted record by using, for each of the neighboring block chain nodes, the trusted identifier/untrusted identifier of the neighboring block chain node and the reference node identifier of the neighboring block chain node.
9. The blockchain node of claim 8, wherein the broadcast processing module further includes a record component unit,
and the broadcast composition unit is used for forming a current broadcast message by using each trusted record and the current node identification of the current block link node.
10. A block link point as claimed in claim 9, wherein the status determination module comprises: the system comprises a broadcast analysis unit, a record analysis unit, a confidence coefficient calculation unit and a state determination unit; wherein the content of the first and second substances,
the broadcast analysis unit is used for analyzing each target broadcast message to obtain at least one trusted record;
the record analysis unit is configured to analyze each piece of the trusted record to determine a first voting number of the trusted identifier corresponding to each node identifier, and determine a second voting number of the untrusted identifier corresponding to each node identifier;
the confidence coefficient calculating unit is configured to calculate a confidence coefficient of each block chain node in the block chain system according to the first voting number and the second voting number respectively corresponding to each node identifier;
the state determining unit is configured to determine a trusted state of each blockchain node in the blockchain system according to the confidence of each blockchain node.
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| WO2020164040A1 (en) * | 2019-02-14 | 2020-08-20 | Siemens Aktiengesellschaft | Status change management method, apparatus and computer-readable medium |
| CN109951527B (en) * | 2019-02-20 | 2020-08-25 | 华东师范大学 | Virtualization system-oriented hypervisor integrity detection method |
| CN110324422B (en) * | 2019-07-05 | 2020-08-28 | 北京大学 | Cloud application verification method and system |
| CN111400277B (en) * | 2020-03-06 | 2020-10-16 | 安徽中科智链信息科技有限公司 | Block chain health state evaluation method and block chain dynamic anchoring system and method |
| CN111491020B (en) * | 2020-04-08 | 2021-09-28 | 腾讯科技（深圳）有限公司 | Data processing method, data processing device, computer equipment and storage medium |
| CN112070508B (en) * | 2020-09-14 | 2021-08-06 | 易宝支付有限公司 | Block chain payment processing method based on block chain finance and block chain payment platform |
| CN112583798B (en) * | 2020-11-30 | 2022-11-08 | 北京八分量信息科技有限公司 | Method, device and related product for screening common identification nodes from block chain system |
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