CN113672937B - Block chain link point - Google Patents
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- CN113672937B CN113672937B CN202110964774.6A CN202110964774A CN113672937B CN 113672937 B CN113672937 B CN 113672937B CN 202110964774 A CN202110964774 A CN 202110964774A CN 113672937 B CN113672937 B CN 113672937B
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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 node 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 determining unit. The identification determining unit is used for forming a trusted identification corresponding to each adjacent blockchain node when the reference trusted state of the adjacent blockchain node represents that the adjacent blockchain node is trusted; and when the reference trusted state of the adjacent blockchain node represents that the adjacent blockchain node is not trusted, forming an untrusted identifier corresponding to the adjacent blockchain node. By the technical scheme, the block chain node can know the credible state of each block chain node in the block chain system more accurately.
Description
The invention relates to a method for determining the credible state of a blockchain node, a blockchain node and a system, which are classified according to the application number 201810575106.2, the application date 2018, 6 and 6, and the application type.
Technical Field
The invention relates to the technical field of blockchain, in particular to a blockchain node.
Background
Blockchain is an decentralized storage and computing technology, and blockchain systems are typically constructed from a plurality of blockchain nodes interconnected by communication links, each of which can provide a corresponding service or issue contractual tasks. To increase the security of a 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 invention of China with the application number of CN201710358355.1 discloses a mobile terminal self-organizing network positioning method based on a blockchain, wherein the mobile terminal network comprises a plurality of nodes, node information of the nodes is stored in a block form, the plurality of blocks form a blockchain, block data in the blockchain is node information of the nodes, the node information at least comprises relative position information of adjacent nodes, and the method comprises the following steps: searching relative position information of adjacent nodes in the block chain; and acquiring the relative positions among nodes and the relative positions in the blockchain according to the relative position information of the adjacent nodes in the blockchain. The invention can regard the blocks in the block chain as the trusted nodes of the consensus mechanism, and according to the characteristics of the block chain, the users in the mobile terminal network can accurately position the position information of the users in the communication network under the condition of not depending on a trusted third party and under the condition of no GPS signal or weak GPS signal.
The invention of China with the application number of CN201410239309.6 relates to a trust value calculation method based on dynamic adjustment of a Beta reputation system, and the trust value of each node of a network is initialized based on the Beta reputation system; after the nodes interact, calculating the trust value T of the node through the following formula, and calculating the average trust value of the neighbor nodes; determining a trusted line f of the node according to the average trust value of the neighbor node; setting up a buffer area, wherein the upper limit of the buffer area is a trusted line f; a lower limit u of the buffer; and judging whether the node is trusted or not according to the trusted line f and the lower limit u of the buffer zone.
At present, each blockchain node in a blockchain system is connected with a computing cluster consisting of a plurality of computing nodes, the computing cluster can collect operation data of each blockchain node, calculate the credible state of each blockchain node according to the operation data of each blockchain node, and then feed back the credible state of each blockchain node to each blockchain node in the blockchain system.
In the above technical solution, the security of the computing cluster directly affects the trusted state of each blockchain node obtained by computing, which may cause that the blockchain node in the blockchain system cannot accurately know the trusted state of each blockchain node in the blockchain system.
The block chain node in the block chain system can determine whether each block chain node in the block chain system is credible or not, so the invention provides the block chain node capable of accurately knowing the credible state of each block chain node in the block chain system.
Disclosure of Invention
The embodiment of the invention provides a method for determining the trusted state of a blockchain node, the blockchain node and a system, wherein the blockchain node can be used for accurately knowing the trusted state of each blockchain node in a blockchain system.
In a first aspect, the present invention provides a method of determining a trusted status of a blockchain node, for use with a current blockchain node of a blockchain system, comprising:
collecting operation data of at least one adjacent blockchain node adjacent to the current blockchain node in the blockchain system;
determining the reference trusted 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 trusted 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 link point;
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 method comprises the steps of,
when the number of the adjacent blockchain nodes adjacent to the current blockchain node is not less than 2, the receiving at least one reference broadcast message respectively broadcast by each adjacent blockchain node further includes: and broadcasting each received reference broadcast message.
Preferably, the method comprises the steps of,
the current broadcast message carries a current node identifier of the current blockchain node;
then, before determining the trusted status of each blockchain node in the blockchain system based on the current broadcast message and each of the reference broadcast messages, further includes:
according to the received reference node identifiers carried by the reference broadcast messages, performing de-duplication processing on the current broadcast message and the received reference broadcast messages to extract at least one item of target broadcast message;
the determining the 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 method comprises the steps of,
the forming a current broadcast message according to the reference trusted status of each adjacent blockchain node includes:
for each adjacent blockchain node, when the reference trusted state of the adjacent blockchain node characterizes the credibility of the adjacent blockchain node, forming a credible identifier corresponding to the adjacent blockchain node; forming an untrusted identifier corresponding to the adjacent blockchain node when the reference trusted state of the adjacent blockchain node characterizes that the adjacent blockchain node is untrusted;
for each adjacent blockchain node, forming a trusted record by using the trusted identification/untrusted identification of the adjacent blockchain node and the reference node identification of the adjacent blockchain node;
forming a current broadcast message by utilizing each trusted record and the current node identifier of the current blockchain 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 trusted record to determine a first voting number of the trusted identifications corresponding to each node identification respectively and a second voting number of the untrusted identifications corresponding to each node identification respectively;
Calculating the confidence coefficient of each blockchain node in the blockchain system according to the first voting number and the second voting number which are respectively corresponding to each node identifier;
and determining the trusted state of each blockchain node in the blockchain system according to the confidence of each blockchain node.
Preferably, the method comprises the steps of,
the determining the trusted status of each of the blockchain nodes in the blockchain system according to the confidence of each of the blockchain nodes comprises:
for each block chain node, determining the block chain node as a trusted node when the confidence 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 of the block chain node is less than the set threshold;
or alternatively, the first and second heat exchangers may be,
and sequencing the calculated confidence degrees according to the sequence from large to small, sequentially selecting a set number of confidence degrees according to the sequencing result, determining the blockchain nodes corresponding to the selected confidence degrees as trusted nodes, and determining the blockchain nodes corresponding to the unselected confidence degrees as untrusted nodes.
In a second aspect, the present invention provides a blockchain node for use in a blockchain system, comprising:
the data acquisition module is used for acquiring operation data of at least one adjacent blockchain node adjacent to the current blockchain node in the blockchain system;
the trusted computing module is used for determining the reference trusted state of each adjacent blockchain node according to the operation data of each adjacent blockchain node;
the broadcast processing module is used for forming a current broadcast message according to the reference trusted 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 link point;
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 method comprises the steps of,
the broadcast processing module is further configured to broadcast each received reference broadcast message when the number of neighboring blockchain nodes neighboring the current blockchain node is not less than 2.
Preferably, the method comprises the steps of,
further comprises: a deduplication processing module; wherein, the liquid crystal display device comprises a liquid crystal display device,
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 identifiers carried by each received reference broadcast message respectively so as to extract at least one item of target broadcast message;
and the state determining module is used for determining the credible state of each blockchain node in the blockchain system according to each target broadcast message.
Preferably, the method comprises the steps of,
the broadcast processing module includes: the device comprises an identification determining unit, a recording composition unit and a broadcasting composition unit; wherein, the liquid crystal display device comprises a liquid crystal display device,
the identification determining unit is used for forming a trusted identification corresponding to each adjacent blockchain node when the reference trusted state of the adjacent blockchain node represents that the adjacent blockchain node is trusted; forming an untrusted identifier corresponding to the adjacent blockchain node when the reference trusted state of the adjacent blockchain node characterizes that the adjacent blockchain node is untrusted;
the record composing unit is used for composing a trusted record by utilizing the trusted identification/untrusted identification of the adjacent blockchain node and the reference node identification of the adjacent blockchain node aiming at each adjacent blockchain node;
The broadcast composition unit is used for forming a current broadcast message by utilizing each trusted record and the current node identifier of the current blockchain node;
the state determination module includes: the system comprises a broadcast analysis unit, a record analysis unit, a confidence calculation unit and a state determination unit; wherein, the liquid crystal display device comprises a liquid crystal display device,
the broadcast analysis unit is used for analyzing each target broadcast message to obtain at least one trusted record;
the record analysis unit is used for analyzing each trusted record to determine the first voting number of the trusted identifications corresponding to each node identification respectively and determine the second voting number of the untrusted identifications corresponding to each node identification respectively;
the confidence calculating unit is used for calculating the confidence of each blockchain node in the blockchain system according to the first voting number and the second voting number which are respectively corresponding to each node identifier;
the state determining unit is used for determining the 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 blockchain system including at least two blockchain nodes as in any of the second aspects, wherein each of the blockchain nodes is interconnected by a communication link.
The embodiment of the invention provides a method for determining the trusted 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 is adjacent to the current block chain node, the current block chain node can determine the reference trusted 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 a current broadcast message according to the reference trusted state of each adjacent block chain node and broadcasting, each adjacent block chain node can know the reference trusted 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 broadcast by each adjacent block chain node, the current broadcast message and each received reference broadcast message can reflect the reference trusted state of each adjacent block chain node in the block chain system, one block chain node can calculate the trusted state of each block chain node relative to the other block chain node according to the current block chain node, and each block chain node can calculate the trusted state of each block chain node in the current block chain node and each block chain node, and each system can not be more accurately calculated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for determining a blockchain node trusted status in accordance with an embodiment of the present invention;
FIG. 2 is a flow chart of another method for determining the trusted status of blockchain nodes provided by an embodiment of the present invention;
FIG. 3 is a schematic block chain node according to one embodiment of the present invention;
FIG. 4 is a block chain node according to another embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present invention are within the scope of protection 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, applied to a current blockchain node of a blockchain system, comprising:
step 101, collecting operation data of at least one adjacent blockchain node adjacent to the current blockchain node in the blockchain system;
step 102, determining the reference trusted state of each adjacent blockchain node according to the operation data of each adjacent blockchain node;
step 103, forming a current broadcast message according to the reference trusted state of each adjacent block chain node, and broadcasting the current broadcast message;
104, receiving at least one reference broadcast message respectively broadcast by each adjacent block link point;
step 105, determining the trusted status of each blockchain node in the blockchain system according to the current broadcast message and each reference broadcast message.
In the embodiment shown in fig. 1, the method is applied to a current blockchain node of a blockchain system, the current blockchain node can determine a reference trusted state of each adjacent blockchain node according to the operation data of each adjacent blockchain node by collecting the operation data of each adjacent blockchain node, after forming a current broadcast message according to the reference trusted state of each adjacent blockchain node and broadcasting, each adjacent blockchain node can know the reference trusted state of each adjacent blockchain node relative to the current blockchain node according to the current broadcast message, and correspondingly, after the current blockchain node receives each reference broadcast message broadcasted by each adjacent blockchain node, the current broadcast message and each received reference broadcast message thereof can reflect the reference trusted state of each adjacent blockchain node in the blockchain system, and the current blockchain node can determine the trusted state of each blockchain node in the blockchain system according to the current broadcast message and each reference broadcast message, and then calculate the trusted state of each blockchain node in the blockchain system according to the current broadcast message is not more accurate.
In the above embodiments, determining the trusted status of the blockchain node specifically refers to determining whether the blockchain node is a trusted node.
In the above embodiments, the neighboring blockchain node neighboring the current blockchain link point specifically refers to a blockchain node neighboring the current blockchain link point on a region or a communication link, capable of receiving a broadcast message broadcasted by the current blockchain node and capable of receiving a broadcast message broadcasted by the current blockchain node in the blockchain system.
It should be understood by those skilled in the art that the method for determining the trusted status of a blockchain node in a blockchain system according to the embodiments of the present invention may be applied to each blockchain node in a blockchain system, and the various method embodiments provided in the present invention are described only when the method is implemented on a current blockchain node, i.e., one method step performed on the current blockchain node, and all other blockchain nodes in the blockchain system except the current blockchain node perform the same or similar content as the step for convenience of description.
When any one of the blockchain nodes in the blockchain system is used as the current blockchain node, other blockchain nodes in the blockchain system are adjacent to the current blockchain node, the embodiment shown in fig. 1 can enable any one of the current blockchain nodes in the blockchain system to know the trusted state of each blockchain node in the blockchain system more accurately, that is, each blockchain node in the blockchain system can know the trusted state of each blockchain node in the blockchain system more accurately through the embodiment shown in fig. 1. However, the blockchain system includes a large number of blockchain nodes in a partial traffic scenario, there are typically multiple adjacent blockchain nodes adjacent to any blockchain node of the blockchain system, and there are also a large number of blockchain nodes that are not adjacent to the blockchain node.
Thus, in one embodiment of the present invention, when the number of neighboring blockchain nodes neighboring 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: and broadcasting each received reference broadcast message.
In the above embodiment, when there are a plurality of adjacent blockchain nodes adjacent to one blockchain node of the blockchain system and there are one or more non-adjacent blockchain nodes not adjacent to the one or more adjacent blockchain nodes, each blockchain node of the blockchain system will broadcast each broadcast message (reference broadcast message) received by the blockchain node again (i.e. the broadcast message broadcast by any one of the first adjacent blockchain nodes adjacent to the current blockchain node can be broadcast by the current blockchain node to each of the second adjacent blockchain nodes adjacent to the current blockchain node), so that the broadcast message (current broadcast message) formed by one blockchain node can be gradually propagated to each of the non-adjacent blockchain nodes not adjacent to the one blockchain node, and thus the reference trusted state of each adjacent blockchain node adjacent to the blockchain node relative to the blockchain node can be known by each blockchain node in the blockchain system.
In one possible implementation, the blockchain node may also perform a corresponding self-judgment process that the current blockchain node broadcasts again the reference broadcast message it receives if and only if it is determined that there are multiple neighboring blockchain nodes for the current blockchain node.
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 can determine the reference trusted status of B and D, i.e., C can determine the reference trusted status of D and B with respect to C, respectively, C can broadcast the broadcast message Y to B, D after forming the broadcast message Y with respect to the reference trusted status of C according to B, D, and B can 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 can learn the reference trusted status of B and D with respect to C, respectively, through the broadcast message Y.
Thus, when one block chain link point of the block chain system has a plurality of adjacent block chain nodes adjacent to the block chain link point and one or more non-adjacent block chain nodes not adjacent to the block chain node are present, the reliable state of each block chain node in the block chain system can be known more accurately by any block chain node in the block chain system.
When any current node of the blockchain system re-broadcasts each reference broadcast message received by the current node, the reference broadcast message formed by the same blockchain node can be received by the same blockchain node for a plurality of times. For example, the blockchain system includes blockchain nodes A, B, C, D, B, C each adjacent D and B, C each adjacent a; thus, when receiving one broadcast message X formed and broadcast by a, each B, C broadcasts the received broadcast message X to D, which causes D to receive the broadcast message X formed and broadcast by a and B, C. The broadcast messages received repeatedly in the follow-up process do not have substantial reference meaning, so that the repeated processing is needed to be carried out on each reference broadcast message received by the current block chain node and the formed current broadcast message, thereby realizing the accurate determination of the credible state of each block chain node. Specifically, in one embodiment of the present invention, the current broadcast message carries a current node identifier of the current blockchain node;
then, before determining the trusted status of each blockchain node in the blockchain system based on the current broadcast message and each of the reference broadcast messages, further includes:
According to the received reference node identifiers carried by the reference broadcast messages, performing de-duplication processing on the current broadcast message and the received reference broadcast messages to extract at least one item of target broadcast message;
the determining the 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 the reference credibility state of each adjacent blockchain node adjacent to the blockchain node, and when one current blockchain node is invaded by an invader to cause the credibility of the reference credibility state of each adjacent blockchain node determined by the current blockchain node to be unreliable, the credibility of the reference credibility state of each adjacent blockchain node determined by the current blockchain node is reduced, and the current blockchain node possibly has different reference credibility states corresponding to a plurality of different adjacent blockchain nodes adjacent to the current blockchain node. Thus, in one embodiment of the present invention, the forming the 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 trusted state of the adjacent blockchain node characterizes the credibility of the adjacent blockchain node, forming a credible identifier corresponding to the adjacent blockchain node; forming an untrusted identifier corresponding to the adjacent blockchain node when the reference trusted state of the adjacent blockchain node characterizes that the adjacent blockchain node is untrusted;
for each adjacent blockchain node, forming a trusted record by using the trusted identification/untrusted identification of the adjacent blockchain node and the reference node identification of the adjacent blockchain node;
forming a current broadcast message by utilizing each trusted record and the current node identifier of the current blockchain 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 trusted record to determine a first voting number of the trusted identifications corresponding to each node identification respectively and a second voting number of the untrusted identifications corresponding to each node identification respectively;
Calculating the confidence coefficient of each blockchain node in the blockchain system according to the first voting number and the second voting number which are respectively corresponding to each node identifier;
and determining the trusted state of each blockchain node in the blockchain system according to the confidence of each blockchain node.
It should be understood by those skilled in the art that when the current blockchain node determines the reference trusted state 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 operated by the corresponding neighboring blockchain node, a current storage address of the operated application program, a user triggering the operation 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 blockchain node mainly acquires operation data recorded by a TPM chip, and then detects whether a real-time abstract value of an application program operated on an adjacent blockchain 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 a corresponding application program has authority to operate a corresponding reference program or not so as to determine the reference trusted state of the adjacent blockchain node.
Accordingly, when the current blockchain node detects that the real-time abstract value of an application program operated on an adjacent blockchain node is different from the pre-stored reference abstract value, or detects that the standard storage address of the application program operated by the blockchain node is different from the current storage address, or detects that a user triggering the operation of the corresponding application program has permission to operate the corresponding reference program, the reference trusted state of the adjacent blockchain node is characterized as untrusted, and at the moment, an untrusted identifier corresponding to the adjacent blockchain node can be formed; otherwise, a trusted identification corresponding to the neighboring blockchain node may be formed.
Obviously, when the first voting number corresponding to one node identifier is relatively large and the second voting number corresponding to the node identifier is relatively small, the confidence level for evaluating the trusted state of the blockchain node corresponding to the equipment of the node is higher; conversely, when the first number of votes corresponding to a node identifier is relatively small and the second number of votes corresponding to the node identifier is relatively large, the confidence level for evaluating the trusted state of the blockchain node corresponding to the device of the node is indicated to be lower.
In summary, after determining the reference trusted status of each adjacent blockchain node adjacent to the current blockchain node, the current blockchain node forms a corresponding trusted identifier or an untrusted identifier according to the reference trusted status, and forms a trusted record with the formed trusted identifier or untrusted identifier and the reference node identifier of the adjacent blockchain node corresponding to the trusted identifier or untrusted identifier; in the subsequent process, after analyzing each trusted record carried by each item label broadcast message, the confidence coefficient of each blockchain node can be calculated by using the first voting number and the second voting number respectively corresponding to each node identifier, so that the trusted state of each blockchain node can be objectively and accurately determined through the confidence coefficient respectively corresponding to each blockchain node.
Specifically, in the above embodiment, the confidence of each blockchain node in the blockchain system may be calculated by the following formula:
wherein ρi characterizes the confidence of the blockchain node corresponding to the ith node identifier, αi characterizes the first number of votes corresponding to the ith node identifier, and βi characterizes the second number of votes corresponding to the ith node identifier.
Based on the above embodiments, determining the trusted status of each of the blockchain nodes in the blockchain system may be accomplished in accordance with the confidence of each of the blockchain nodes in any of two ways:
In the mode 1, for each blockchain node, the blockchain node is determined to be a trusted node when the confidence of the blockchain node is not less than a set threshold, and the blockchain node is determined to be an untrusted node when the confidence of the blockchain node is less than the set threshold.
And 2, sorting the calculated confidence degrees according to the order from large to small, sequentially selecting a set number of confidence degrees according to the sorting result, determining the blockchain nodes corresponding to the selected confidence degrees as trusted nodes, and determining the blockchain nodes corresponding to the unselected confidence degrees as untrusted nodes. In mode 2, the set number is determined according to the product of the total number of all the blockchain nodes and 10% of the nodes in the blockchain system according to the characteristic that lie-spreading cost approaches 90%.
For more clear explanation of the technical solution 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 is adjacent to D is adjacent to E, and for convenience of description, only uses blockchain node A, B, C, D to cooperate with current blockchain node E to implement determining the trusted status of each blockchain node by the blockchain node E, as shown in fig. 2, specifically may include the following steps:
In step 201, a collects B operational data, B collects A, C, D operational data, C collects B, E operational data, and D collects B, E operational data.
In step 202, a determines the reference trusted status of B from the operational data of B, B determines the operational status of A, C, D from the operational data of A, C, D, C determines the reference trusted status of B, E from the operational data of B, E, and D determines the reference trusted status of B, E from the operational data of B, E, respectively.
Step 203, a forms a first broadcast message, B forms a second broadcast message, C forms a third broadcast message, D forms a fourth broadcast message, and E forms a fifth broadcast message.
In step 203, each broadcast message may carry a corresponding trusted record to form a node identifier of a blockchain node of the broadcast message, where each trusted record is formed by a node identifier of a corresponding neighboring blockchain node and a trusted identifier or an untrusted identifier formed according to a trusted state of the blockchain node, which are described in detail in the foregoing embodiments and are not described herein.
Step 204, a broadcasts the first broadcast message to B, B broadcasts the second broadcast message and the first broadcast message received thereby to C, D, C broadcasts the third broadcast message and the first broadcast message received thereby, the second broadcast message to E, and D broadcasts the fourth broadcast message and the first broadcast message received thereby, the second broadcast message to E.
In step 205, the E receives the first broadcast message, the second broadcast message, and the third broadcast message of the C broadcast, and the E receives the first broadcast message, the second broadcast message, and the fourth broadcast message of the D broadcast.
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, the E needs to repeatedly receive the first broadcast message and the second broadcast message respectively broadcast by C and D, and after the de-repetition process, the E can extract a first broadcast message, a second broadcast message, a third broadcast message, a fourth broadcast message, and a fifth broadcast message.
Step 207, the e parses each tag broadcast message to extract the trusted records carried by each tag broadcast message.
Step 208, e parses each trusted record to determine a first number of votes for the trusted identifications corresponding to the node identifications of A, B, C, D, E, respectively, and a second number of votes for the untrusted identifications corresponding to the node identifications of A, B, C, D, E, respectively.
Step 209, e calculates a confidence level of A, B, C, D, E in the blockchain system according to the first vote number and the second vote number corresponding to each of the node identifiers.
Step 210, determining the trusted status of A, B, C, D, E in the blockchain system based on the confidence of A, B, C, D, E.
In step 210, A, B, C, D, E in the blockchain system is determined to be a trusted node or an untrusted node, respectively, based on the magnitude of the confidence in A, B, C, D, E.
The embodiment of the invention provides a blockchain node. The apparatus embodiments may be implemented by software, or may be implemented by hardware or a combination of hardware and software. From the hardware level, the blockchain node may include basic hardware such as a processor, a memory, a network interface, and a nonvolatile memory, and may also include other hardware such as a forwarding chip responsible for processing a message and a TPM chip recording operation data of the blockchain node. Taking a software implementation as an example, as shown in fig. 3, the device in a logic sense is formed by reading corresponding computer program instructions in a nonvolatile memory into a memory by a CPU of a device where the device is located for operation. The blockchain node provided in this embodiment is applied to a blockchain system, and includes:
a data acquisition module 301, configured to acquire operation data of at least one neighboring blockchain node neighboring the current blockchain node in the blockchain system;
A trusted computing module 302, configured to determine a reference trusted status of each of the neighboring blockchain nodes according to the operation data of each of the neighboring blockchain nodes;
a broadcast processing module 303, configured to form a current broadcast message according to the reference trusted status of each neighboring blockchain node, and broadcast the current broadcast message; receiving at least one reference broadcast message respectively broadcast by each adjacent block link point;
the state determining module 304 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.
In one embodiment of the present invention, the broadcast processing module 303 is further configured to broadcast each received reference broadcast message when the number of neighboring blockchain nodes neighboring the current blockchain node is not less than 2.
Referring to fig. 4, in one embodiment of the present invention, the blockchain node further includes: a deduplication processing module 401; wherein, the liquid crystal display device comprises a liquid crystal display device,
the de-duplication processing module 401 is configured to de-duplication process the current broadcast message and each received reference broadcast message according to the reference node identifier carried by each received reference broadcast message, so as to extract at least one target broadcast message;
The state determining module 304 is configured to determine a trusted state of each blockchain node in the blockchain system according to each of the target broadcast messages.
In one embodiment of the present invention, the broadcast processing module 303 includes: the device comprises an identification determining unit, a recording composition unit and a broadcasting composition unit; wherein, the liquid crystal display device comprises a liquid crystal display device,
the identification determining unit is used for forming a trusted identification corresponding to each adjacent blockchain node when the reference trusted state of the adjacent blockchain node represents that the adjacent blockchain node is trusted; forming an untrusted identifier corresponding to the adjacent blockchain node when the reference trusted state of the adjacent blockchain node characterizes that the adjacent blockchain node is untrusted;
the record composing unit is used for composing a trusted record by utilizing the trusted identification/untrusted identification of the adjacent blockchain node and the reference node identification of the adjacent blockchain node aiming at each adjacent blockchain node;
the broadcast composition unit is used for forming a current broadcast message by utilizing each trusted record and the current node identifier of the current blockchain node;
Then, the state determination module 304 includes: the system comprises a broadcast analysis unit, a record analysis unit, a confidence calculation unit and a state determination unit; wherein, the liquid crystal display device comprises a liquid crystal display device,
the broadcast analysis unit is used for analyzing each target broadcast message to obtain at least one trusted record;
the record analysis unit is used for analyzing each trusted record to determine the first voting number of the trusted identifications corresponding to each node identification respectively and determine the second voting number of the untrusted identifications corresponding to each node identification respectively;
the confidence calculating unit is used for calculating the confidence of each blockchain node in the blockchain system according to the first voting number and the second voting number which are respectively corresponding to each node identifier;
the state determining unit is used for determining the trusted state of each blockchain node in the blockchain system according to the confidence of each blockchain node.
The content of information interaction and execution process between the units in the device is based on the same conception as the embodiment of the method of the present invention, and specific content can be referred to the description in the embodiment of the method of the present invention, which is not repeated here.
The embodiment of the invention provides a blockchain system, which comprises at least two blockchain nodes provided in any embodiment of the invention, wherein the blockchain nodes are interconnected through communication links. Those skilled in the art will appreciate that in an actual traffic scenario, the blockchain system includes a number of blockchain nodes that is much greater than 2.
In the blockchain system provided in the above embodiment, a service program for implementing blockchain tamper resistance and blockchain storage certificate may be deployed, and a service interface for issuing an intelligent contract or sharing service data may be provided to users such as securities, banking systems, e-commerce, etc., after determining the trusted status of each blockchain node in each blockchain system, that is, after implementing determining each blockchain node in the blockchain system as a trusted node or an untrusted node, respectively, each determined trusted node may be used to execute a corresponding task or provide a corresponding service or execute an intelligent contract issued by any trusted node; conversely, when a blockchain node is determined to be an untrusted node, services provided by the node, shared data, or intelligent contracts issued by the node will be invalidated, and at the same time, when contract requests issued by users or other trusted nodes reach the untrusted node, the service requests will also be terminated.
In a specific service scenario, when the blockchain system provided by the embodiment of the invention provides a validation service for an external computing cluster, after receiving a validation request sent by the external computing cluster, the method provided by the embodiment of the invention firstly determines the trusted state of each blockchain node of the blockchain system, namely, each blockchain node of the blockchain system is respectively as a trusted node or an untrusted node, the voting right of each untrusted node is terminated, and only a certain number of trusted nodes are selected from the determined trusted nodes to quickly complete the validation service according to the received validation request.
In summary, each embodiment of the present invention has at least the following advantages:
1. in an embodiment of the present invention, when one or more adjacent blockchain nodes exist in the blockchain system and are adjacent to the current blockchain node, the current blockchain node can determine the reference trusted state of each adjacent blockchain node according to the operation data of each adjacent blockchain node by collecting the operation data of each adjacent blockchain node, after forming the current broadcast message according to the reference trusted state of each adjacent blockchain node and broadcasting, each adjacent blockchain node can know the reference trusted state of each adjacent blockchain node relative to the current blockchain node according to the current broadcast message, correspondingly, after the current blockchain node receives each reference broadcast message broadcast by each adjacent blockchain node adjacent to the current blockchain node, the current broadcast message and each received reference broadcast message can reflect the reference trusted state of one blockchain node relative to another blockchain node in the blockchain system, and the current blockchain node can determine the trusted state of each blockchain node in the blockchain system according to the current broadcast message and each reference broadcast message, and the current blockchain node can not calculate the trusted state of each blockchain node in the blockchain system.
2. In one embodiment of the present invention, when a blockchain link point of a blockchain system has a plurality of neighboring blockchain nodes adjacent to the blockchain node, and one or more non-neighboring blockchain nodes not adjacent to the blockchain node exist, each blockchain node of the blockchain system will broadcast each broadcast message received by the blockchain node again, so that the broadcast message formed by one blockchain node can be gradually propagated to each non-neighboring blockchain node not adjacent to the blockchain node in the blockchain system, and further the reference trusted state of each neighboring blockchain node adjacent to the blockchain node relative to the blockchain node can be known by each blockchain node in the blockchain system.
3. In one embodiment of the invention, after determining the reference trusted state of each adjacent blockchain node adjacent to the current blockchain node, the current blockchain node forms a corresponding trusted identifier or an untrusted identifier according to the reference trusted state, and forms a trusted record with the formed trusted identifier or untrusted identifier and the reference node identifier of the adjacent blockchain node corresponding to the trusted identifier or untrusted identifier; in the subsequent process, after analyzing each trusted record carried by each item label broadcast message, the confidence coefficient of each blockchain node can be calculated by using the first voting number and the second voting number respectively corresponding to each node identifier, so that the trusted state of each blockchain node can be objectively and accurately determined through the confidence coefficient respectively corresponding to each blockchain node.
4. In an embodiment of the present invention, when the blockchain system provided by the foregoing embodiment of the present invention provides a validation service for an external computing cluster, after receiving a validation request sent by the external computing cluster, the method provided by the embodiment of the present invention first determines, from each blockchain node trusted state of the blockchain system, that is, each blockchain node of the blockchain system is respectively determined as a trusted node or an untrusted node by the method provided by the embodiment of the present invention, terminates the voting rights of each untrusted node, and only selects a certain number of trusted nodes from the determined trusted nodes to quickly complete the validation service according to the received validation request.
It is noted that relational terms such as first and second, and the like, are 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. Moreover, 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, an element defined by the statement "comprises one" does not exclude that an additional identical element is present in a process, method, article or apparatus that comprises the element.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (10)
1. A block chain node is characterized by being applied to a block chain system and comprising a broadcast processing module,
the broadcast processing module comprises at least an identification determining unit,
the identification determining unit is used for forming a trusted identification corresponding to each adjacent blockchain node when the reference trusted state of the adjacent blockchain node represents that the adjacent blockchain node is trusted; forming an untrusted identifier corresponding to the adjacent blockchain node when the reference trusted state of the adjacent blockchain node characterizes that the adjacent blockchain node is untrusted;
analyzing each item label broadcast message to obtain at least one trusted record;
analyzing each trusted record to determine a first voting number of the trusted identifications corresponding to each node identification respectively and a second voting number of the untrusted identifications corresponding to each node identification respectively;
Calculating the confidence coefficient of each blockchain node in the blockchain system according to the first voting number and the second voting number which are respectively corresponding to each node identifier;
and determining the trusted state of each blockchain node in the blockchain system according to the confidence of each blockchain node.
2. The blockchain node of claim 1, further comprising a data acquisition module,
the data acquisition module is used for acquiring operation data of at least one adjacent block chain node adjacent to the current block chain link point in the block chain system.
3. The blockchain node of claim 2, wherein the blockchain node further comprises a trusted computing module,
the trusted computing module is used for determining the reference trusted state of each adjacent blockchain node according to the operation data of each adjacent blockchain node.
4. The blockchain node of claim 3, wherein the broadcast processing module is configured to form a current broadcast message according to a 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 link point.
5. The blockchain node of claim 4, further comprising 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 neighboring blockchain nodes neighboring the current blockchain node is not less than 2.
7. The blockchain node of claim 6, further comprising: a deduplication processing module; wherein, the liquid crystal display device comprises a liquid crystal display device,
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 identifiers carried by each received reference broadcast message respectively so as to extract at least one item of target broadcast message;
and the state determining module is used for determining the credible state of each blockchain node in the blockchain system according to each target broadcast message.
8. The blockchain node of claim 7, wherein the broadcast processing module further comprises a record composing unit,
the record composing unit is used for composing a trusted record by utilizing the trusted identification/untrusted identification of the adjacent blockchain nodes and the reference node identification of the adjacent blockchain nodes aiming at each adjacent blockchain node.
9. The blockchain node of claim 8, wherein the broadcast processing module further comprises a broadcast component unit,
and the broadcast composition unit is used for forming a current broadcast message by utilizing each trusted record and the current node identification of the current blockchain node.
10. The blockchain node of claim 9, wherein the status determination module comprises: broadcast analysis unit, record analysis unit, confidence calculation unit and state determination unit.
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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 |
| CN112688960B (en) * | 2020-12-30 | 2022-10-14 | 北京八分量信息科技有限公司 | Method, system and related product for calculating connection strength in internet node authentication |
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| CN113672938A (en) | 2021-11-19 |
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