CN111695154B - Information verification method and device based on block chain - Google Patents
Information verification method and device based on block chain Download PDFInfo
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Abstract
The invention provides a block chain-based information verification method and a block chain-based information verification device, wherein the method comprises the following steps: the first trusted node receives information to be verified and acquires a classification label corresponding to the information to be verified; the first trusted node queries whether a trusted node corresponding to the classification label exists in the blockchain network in a preset database of the first trusted node; the first trusted node receives the verification result of the encrypted information to be verified, which is issued in the blockchain network, decrypts the verification result, comprehensively judges the decrypted verification result and generates a final verification result of the information to be verified. The method and the device solve the problems that the masses and the third parties cannot trace the verification process of the information in the existing verification method, and the masses and the third parties cannot obtain the final verification result when different platforms have different verification results.
Description
Technical Field
The present invention relates to the field of information processing technologies, and in particular, to a blockchain-based information verification method and apparatus.
Background
Various information, some correct information and some erroneous information, often appear on the network. False information, i.e., rumors, can have negative impact if the rumors are repeatedly forwarded. In order to verify whether the network information is real, many platforms have a rumor function, and the function is to manually confirm the information through authoritative experts or institutions to complete the verification of the information, but the verification method can not trace the verification process of the information by masses and third parties, and the masses and the third parties can not obtain final verification results under the condition that verification results are different in different platforms.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides a block chain-based information verification method and device, which are used for solving the problems that the masses and the third parties cannot trace the verification process of information in the conventional verification method and cannot obtain the final verification result when different platforms have different verification results.
In a first aspect, an embodiment of the present invention provides a blockchain-based information verification method, including:
the first trusted node receives information to be verified and acquires a classification label corresponding to the information to be verified;
the first trusted node queries whether the trusted node corresponding to the classification label exists in a blockchain network in a preset database of the first trusted node, wherein the preset database comprises node identifiers, classification label sets and public keys of all the trusted nodes in the blockchain network;
if the trusted node corresponding to the classification label exists, the first trusted node encrypts the information to be verified and the classification label by adopting a public key of the trusted node corresponding to the classification label, and issues the encrypted information to be verified and the classification label to a blockchain network;
The first trusted node receives the encrypted verification result of the information to be verified, which is issued in the blockchain network, decrypts the verification result, comprehensively judges the decrypted verification result and generates a final verification result of the information to be verified.
Preferably, after the first trusted node queries whether the trusted node corresponding to the classification label exists in the blockchain network in the preset database of the first trusted node, the method further includes:
and if the trusted node corresponding to the classification label does not exist, the first trusted node encrypts the information to be verified and the classification label by adopting public keys of all trusted nodes in the blockchain network, and issues the encrypted information to be verified and classification label to the blockchain network.
Preferably, before the step of receiving the information to be verified and obtaining the classification label corresponding to the information to be verified by the first trusted node, the method further includes:
the demand node climbs network information with higher forwarding quantity in preset time from the Internet to serve as information to be verified, and the information to be verified is sent to the first trusted node;
The first trusted node obtains a classification label corresponding to information to be verified, and the classification label comprises:
the first trusted node receives information to be verified sent by the demand node;
the first trusted node performs semantic classification on the information to be verified to obtain a classification label;
the first trusted node further comprises, after generating a final verification result of the information to be verified:
and the first trusted node sends a final verification result of the information to be verified to the demand node.
Preferably, the demand node crawls network information with higher forwarding number in a preset time from the internet as information to be verified, and sends the information to be verified to the first trusted node, which includes:
the demand node crawls network information in preset time from the Internet, wherein the network information comprises title information, text information and URL information;
the demand node extracts network information which is corresponding to different URL information and has the same title information and text information from the network information, and the occurrence number of the network information is larger than a preset threshold value as the information to be verified, wherein the information to be verified comprises the title information and the text information;
The requiring node sends the information to be verified to the first trusted node;
the first trusted node performs semantic classification on the information to be verified to obtain a classification label, and the method comprises the following steps:
the first trusted node extracts one or more key words in the title information;
the first trusted node performs semantic classification on the one or more key words to obtain a classification label;
the first trusted node queries whether a trusted node corresponding to the classification label exists in a blockchain network in a preset database of the first trusted node, and the method comprises the following steps:
the first trusted node queries whether a classification label set corresponding to each node identifier contains the classification label in a preset database of the first trusted node;
if the classification label set corresponding to the node identifier contains the classification label, determining the node corresponding to the node identifier as a trusted node corresponding to the classification label.
Preferably, if the trusted node corresponding to the classification label exists, the first trusted node encrypts the information to be verified and the classification label by using a public key of the trusted node corresponding to the classification label, and issues the encrypted information to be verified and the classification label to a blockchain network, including:
If the trusted node corresponding to the classification label exists, the first trusted node queries a public key corresponding to the trusted node in the preset database;
the first trusted node encrypts the information to be verified and the classification label by adopting a public key corresponding to the trusted node;
the first trusted node respectively issues encrypted information to be verified and classification labels to a blockchain network, the encrypted information to be verified and the classification labels are used for triggering the trusted node to decrypt the information to be verified and the classification labels by using a private key, then the information to be verified is verified, a verification result, the information to be verified and the classification labels are generated into a HASH abstract, and meanwhile the HASH abstract, the verification result, the information to be verified and the classification labels are issued to the blockchain network.
Preferably, if the trusted node corresponding to the classification label does not exist, the first trusted node encrypts the information to be verified and the classification label by using public keys of all trusted nodes in the blockchain network, and issues the encrypted information to be verified and classification label to the blockchain network, including:
If the trusted node corresponding to the classification label does not exist, the first trusted node queries public keys corresponding to all the trusted nodes in the blockchain network in the preset database;
the first trusted node adopts public keys corresponding to all the trusted nodes to encrypt the information to be verified and the classification labels respectively;
the first trusted node respectively issues encrypted information to be verified and classification labels to a blockchain network, each trusted node in the blockchain network is used for triggering each trusted node to decrypt the information to be verified and the classification labels by using respective private keys, determining whether the information to be verified can be verified, verifying the information to be verified under the condition that the information to be verified can be verified, generating a HASH abstract by using a verification result, the information to be verified and the classification labels, and issuing the HASH abstract, a verification result, the information to be verified and the classification labels to the blockchain network.
Preferably, the first trusted node receives the encrypted verification result of the information to be verified, decrypts the verification result, comprehensively determines the decrypted verification result, and generates a final verification result of the information to be verified, including:
The first trusted node receives the HASH digest, the verification result, the information to be verified and the classification label which are sent by one or more trusted nodes in a blockchain network;
the first trusted node carries out HASH processing on the verification result, the information to be verified and the classification label, compares the HASH processed result with the HASH abstract, and judges whether the verification result, the information to be verified and the classification label are tampered;
and if the verification result, the information to be verified and the classification label are not tampered, the first trusted node queries weight information corresponding to the one or more trusted nodes in a preset database, and comprehensively judges according to the weight information and the verification result to generate a final verification result of the information to be verified.
Preferably, after the first trusted node issues the encrypted information to be verified and the classification tag to the blockchain network, the method further includes:
the trusted node for verifying the information to be verified issues the verification result, the node identification and the classification label of the encrypted information to be verified to the blockchain network;
and decrypting the verification result, the node identification and the classification label of the encrypted information to be verified, which are issued to the blockchain network, by all the trusted nodes in the blockchain network, and updating the preset database of the trusted nodes according to the decrypted node identification and the classification label.
Preferably, after the step of generating the final verification result of the information to be verified by the first trusted node, the method further includes:
the preset database also contains the weights of all the trusted nodes in the blockchain network;
the first trusted node issues a final verification result of the encrypted information to be verified to a blockchain network;
and adding 1 to weight information corresponding to the trusted nodes with the same verification result as the final verification result in a preset database of all the trusted nodes in the block chain network.
In a second aspect, an embodiment of the present invention provides a blockchain-based information verification device, applied to a first trusted node, where the device includes:
the classification acquisition module is used for receiving the information to be verified and acquiring a classification label corresponding to the information to be verified;
the node query module is used for querying whether the trusted nodes corresponding to the classification labels exist in the blockchain network in a preset database, wherein the preset database comprises node identifiers, classification label sets and public keys of all the trusted nodes in the blockchain network;
the first sending module is used for encrypting the information to be verified and the classification label by adopting a public key of the trusted node corresponding to the classification label when the trusted node corresponding to the classification label exists, and issuing the encrypted information to be verified and the classification label to a blockchain network;
And the comprehensive judgment module is used for receiving the verification result of the encrypted information to be verified, which is issued in the blockchain network, decrypting the verification result, comprehensively judging the decrypted verification result and generating a final verification result of the information to be verified.
According to the information verification method and device based on the blockchain, the first trusted node receives the information to be verified and acquires the classification label corresponding to the information to be verified, and the first trusted node inquires whether the trusted node corresponding to the classification label exists in the blockchain network in the preset database of the first trusted node, so that the information to be verified can be rapidly mapped to one or more trusted nodes with verification functions on the information to be verified in the blockchain network; meanwhile, the first trusted node receives the verification result of the encrypted information to be verified, which is issued in the blockchain network, decrypts the verification result, comprehensively judges the decrypted verification result, and generates a final verification result of the information to be verified, thereby solving the problem that the masses and third parties cannot obtain the final verification result due to different verification results of different platforms in the existing verification method. In addition, the problem that the current verification method cannot trace the verification process of information by masses and third parties is solved through the information verification based on the blockchain.
Drawings
Fig. 1: a flowchart of a blockchain-based information verification method according to embodiment 1 of the present invention;
fig. 2: the block chain-based information verification device of embodiment 2 of the present invention is a block diagram;
fig. 3: the block chain-based information verification device according to embodiment 3 of the present invention is a block diagram.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," "third," "fourth," and the like in the description and claims of the present application and in the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
Example 1:
as shown in fig. 1, the present embodiment provides a blockchain-based information verification method, which includes the following steps:
step S102: the first trusted node receives information to be verified and acquires a classification label corresponding to the information to be verified;
the first trusted node is any trusted node in a blockchain network, the blockchain network is composed of a plurality of trusted nodes, and the trusted nodes can be authorities, authenticated specialists, real-name verified network big V and the like. Each trusted node has a verification function of verification information corresponding to one or more classification labels, and the classification labels can be politics, economy, folk life, epidemic situation, life, science and technology, medical treatment, education, media, entertainment and the like.
Optionally, in step S102: before the step of receiving the information to be verified and obtaining the classification label corresponding to the information to be verified, the method may further include:
the demand node crawls network information with higher forwarding quantity in preset time from the Internet to serve as information to be verified, and sends the information to be verified to the first trusted node;
the demand node may be a rumor-forming mechanism, and is responsible for periodically crawling and reloading network information with higher load number from the internet as information to be verified, and sending the information to be verified to any one of the trusted nodes in the blockchain network, such as the first trusted node, through the blockchain API interface.
Specifically, the demand node crawls network information in preset time from the Internet, wherein the network information comprises title information, text information and URL information;
the demand node extracts network information which is corresponding to different URL information and has the same title information and text information from the network information, and the occurrence number of the network information is larger than a preset threshold value as information to be verified, wherein the information to be verified comprises the title information and the text information;
the requiring node sends the information to be verified to the first trusted node.
Optionally, the obtaining, by the first trusted node, a classification label corresponding to the information to be verified includes:
the first trusted node receives information to be verified sent by a demand node;
the first trusted node performs semantic classification on the information to be verified to obtain a classification label;
specifically, the first trusted node extracts one or more key words in the header information;
the first trusted node performs semantic classification on one or more key words to obtain a classification label;
for example, the first trusted node crawls network information with higher number of recent weekly reloads from the internet as information to be verified, and the content is as follows:
title: the weight is-! Shuanghuanglian oral liquid can inhibit new coronavirus
Text content: the reporter is informed from Shanghai medicine of national academy of sciences on 31 days, and the research initially finds that the Chinese patent medicine Shuanghuanglian oral liquid can inhibit novel coronaviruses. The research of new medicines for treating coronavirus infection and pneumonia by Jiang Hualiang institutions is started by Shanghai medicine institute, and screening, evaluating and researching new medicines for old medicines are focused on the basis of early SARS related research and medicine discovery results.
The first trusted node extracts keywords from the header information as follows: the new crown, virus and Shuanghuanglian, the first trusted node generates a classification label as epidemic situation through semantic analysis according to the keywords.
Step S104: the first trusted node queries whether a trusted node corresponding to the classification label exists in the blockchain network in a preset database of the first trusted node;
the preset database comprises node identifiers, a classification label set, public keys and weight information of all trusted nodes in the blockchain network.
It should be noted that, all the trusted nodes in the blockchain network include respective preset databases, in an initial state, each trusted node presets a part of classification tag initial values according to the previously grasped blockchain network node data, a part of the trusted node classification tag sets without grasping information can be empty, node weights are consistent, and defaulting can be 1, wherein each trusted node grasps at least its own classification tag set, for example, the preset database of the first trusted node a may include information as shown in table 1 in an initial state, the first trusted node a sets its classification tag set "politics and economy", then presets a part of classification tag initial values in the classification tag sets according to the previously grasped information of the trusted nodes B and C, and the classification tag set is empty because the first trusted node a does not have the previously grasped information for the trusted node D.
Table 1:
| node identification | Classification tag set | Public key | Weight information |
| A | Politics, economy | abcdefg | 1 |
| B | Epidemic situation and life | egfewefa | 1 |
| C | Epidemic situation | dbcfefg | 1 |
| D | NULL | kgfemefa | 1 |
In this embodiment, when one trusted node joins the blockchain network, the public key of each trusted node is broadcasted to the blockchain network, so that the node identifier and the public key of the trusted node are added to the respective preset database by other trusted nodes in the blockchain network, then each node presets the initial value of the classification label of the trusted node according to the information of the trusted node which is grasped in advance, and if the information is not grasped, the classification label set of the trusted node is set to be NULL.
Optionally, in step S104, the querying, by the first trusted node, whether a trusted node corresponding to the classification label exists in the blockchain network in the preset database of the first trusted node, may include:
the first trusted node queries whether a classification label set corresponding to each node identifier contains a classification label in a preset database of the first trusted node;
if the classification label set corresponding to the node identification contains the classification label, determining the node corresponding to the node identification as a trusted node corresponding to the classification label. The trusted nodes corresponding to the classification labels can be one or more.
In this embodiment, it is assumed that the preset database of the first trusted node a is shown in table 1, when the classification label is "epidemic situation", the first trusted node a queries whether the classification label set of all the trusted nodes in the preset database includes "epidemic situation", obtains that the classification label sets of the trusted nodes B and C include "epidemic situation" after query, and determines that the trusted nodes B and C are trusted nodes corresponding to the classification label.
Optionally, in step S104: after the step of querying whether the first trusted node has the trusted node corresponding to the classification label in the blockchain network in the preset database of the first trusted node, the method may further include:
if the trusted node corresponding to the classified label does not exist, the first trusted node encrypts the information to be verified and the classified label by adopting public keys of all trusted nodes in the blockchain network, and issues the encrypted information to be verified and the classified label to the blockchain network.
Specifically, if no trusted node corresponding to the classification label exists, the first trusted node queries public keys corresponding to all the trusted nodes in the blockchain network in a preset database;
the first trusted node adopts public keys corresponding to all the trusted nodes to encrypt the information to be verified and the classification labels respectively;
The first trusted node respectively issues the encrypted information to be verified and the classification label to the blockchain network, each trusted node in the blockchain network is used for triggering the decryption of the information to be verified and the classification label by using the private key of each trusted node, determining whether the information to be verified can be verified, verifying the information to be verified under the condition that the information to be verified can be verified, generating a HASH abstract by using a verification result, the information to be verified and the classification label, and issuing the HASH abstract, a verification result, the information to be verified and the classification label to the blockchain network.
In this embodiment, since the classification label of other trusted nodes grasped in advance by each trusted node in the initial stage is not perfect, if the first trusted node does not query the trusted node corresponding to the classification label in the preset database, the first trusted node sends the classification label and the information to be verified to all the trusted nodes in the blockchain network. And after all the trusted nodes acquire the information sent by the first trusted node and decrypt the information by using the private key of the trusted nodes, acquiring the information to be verified and the corresponding classification labels. All the trusted nodes inquire whether the self-classification label set of the respective preset database contains the classification label, if so, the information to be verified can be verified, and under the condition that the information to be verified can be verified, the trusted nodes respectively verify whether the content of the information to be verified is correct, and generate a verification result. And simultaneously generating a HASH abstract from the verification result, the information to be verified and the classification label, and issuing the verification result, the information to be verified and the classification label together with the HASH abstract to the blockchain network after the signature is encrypted by using a private key of the private key. If the information to be verified cannot be verified, the trusted node does not verify the information to be verified.
Step S106: if the trusted node corresponding to the classification label exists, encrypting the information to be verified and the classification label by the first trusted node by adopting a public key of the trusted node corresponding to the classification label, and issuing the encrypted information to be verified and the classification label to the blockchain network;
specifically, if the trusted node corresponding to the classification label exists, the first trusted node queries a public key corresponding to the trusted node in a preset database;
the first trusted node encrypts information to be verified and a classification label by adopting a public key corresponding to the trusted node;
the first trusted node respectively distributes the encrypted information to be verified and the classified label to the blockchain network, the encrypted information to be verified and the encrypted classified label are used for triggering the trusted node to decrypt the information to be verified and the classified label by using the private key, then the information to be verified is verified, a verification result, the information to be verified and the classified label are generated into a HASH abstract, and meanwhile, the HASH abstract, the verification result, the information to be verified and the classified label are distributed to the blockchain network.
Optionally, after the first trusted node issues the encrypted information to be verified and the classification tag to the blockchain network, the method may further include:
The trusted node for verifying the information to be verified issues the verification result, the node identification and the classification label of the encrypted information to be verified to the blockchain network;
and decrypting the verification result, the node identification and the classification label of the encrypted information to be verified, which are issued to the blockchain network, by all the trusted nodes in the blockchain network, and updating the preset database of the trusted nodes according to the decrypted node identification and the classification label.
In this embodiment, in order to improve the reliability of the verification of the information to be verified, the whole process of the verification process of the information to be verified is traceable, and the trusted node for verifying the information to be verified issues the verification result, the node identifier and the classification tag of the encrypted information to be verified to the blockchain network.
In this embodiment, if N trusted nodes corresponding to the classification labels exist, the first trusted node encrypts N times with public keys of the N trusted nodes respectively and issues the encrypted N times to the blockchain network, and the N trusted nodes receive the broadcast with the signature issued by the first trusted node and decrypt the broadcast with the private key of the N trusted nodes to obtain the information to be verified and the corresponding classification label. And each of the N trusted nodes verifies whether the information content to be verified is correct or not, and generates a verification result. And simultaneously generating a HASH abstract from the verification result, the information to be verified and the classification label, and issuing the verification result, the information to be verified and the classification label together with the HASH abstract to the blockchain network after the signature is encrypted by using a private key of the private key. All the trusted nodes in the block chain network receive the broadcast with the signature issued by the N trusted nodes, and acquire the verification result with the HASH abstract, the information to be verified and the classification label after decrypting by adopting the public keys of the N trusted nodes. And (3) carrying out HASH processing on the verification result by all trusted nodes of the blockchain network, comparing the verification result with a HASH abstract, if the verification result is consistent, confirming that the verification information is correct and not tampered, dynamically updating a preset database of the blockchain network according to signatures of N nodes after the verification is correct, and if a classification label set corresponding to the N nodes in the preset database of the blockchain network does not contain the classification label, adding the classification label, otherwise, not adding the classification label.
According to the method and the device, the classification label set in the preset database of all the trusted nodes is updated through the actual verification process of the information to be verified each time, so that the accuracy of classification labels of all the trusted nodes is achieved, any one trusted node can confirm and share the classification labels of the trusted nodes to a blockchain network through the verification process of the information to be verified once, the problem that the classification of the information is not accurate enough in the prior art can be solved, the information to be verified is accurately classified, and quick verification can be achieved. With the continuous acquisition of information to be verified and the continuous verification of the information to be verified, the preset database classification label set of each trusted node is approaching saturation.
Step S108: the first trusted node receives the verification result of the encrypted information to be verified, which is issued in the blockchain network, decrypts the verification result, comprehensively judges the decrypted verification result and generates a final verification result of the information to be verified.
In this embodiment, the verification result is one of correct and incorrect, and the final verification result is one of correct, incorrect and unable to verify.
Optionally, step S108: the first trusted node receives the verification result of the encrypted information to be verified issued in the blockchain network, decrypts the verification result, comprehensively judges the decrypted verification result, and generates a final verification result of the information to be verified, which may include:
The first trusted node receives HASH digests, verification results, information to be verified and classification labels sent by one or more trusted nodes in the blockchain network;
the first trusted node carries out HASH processing on the verification result, the information to be verified and the classification label, compares the HASH processed result with a HASH abstract, and judges whether the verification result, the information to be verified and the classification label are tampered;
if the verification result, the information to be verified and the classification label are not tampered, the first trusted node queries weight information corresponding to one or more trusted nodes in a preset database, comprehensively judges according to the weight information and the verification result, and generates a final verification result of the information to be verified.
In this embodiment, in order to prevent a final verification result error caused by tampering of the verification result in the propagation process, the first trusted node determines whether the verification result, the information to be verified and the classification label are tampered before comprehensively determining the verification result, and comprehensively determines the verification result if not tampered.
The final verification result may be the result with the largest number of correct or incorrect times in the verification result. Assuming that two verification results are correct and one verification result is incorrect, the final verification result is incorrect.
Preferably, in order to increase the weight of the trusted node with high weight in the final verification result, comprehensive judgment can be performed according to the weight information and the verification result, so as to generate the final verification result of the information to be verified. The method comprises the following steps: comparing the weight information corresponding to the correct result with the weight information sum corresponding to the error result in the trusted node, and if the weight information sum corresponding to the correct result is larger than the weight information sum corresponding to the error result, finally verifying that the result is correct; if the weight information sum corresponding to the correct result is equal to the weight information sum corresponding to the wrong result, the final verification result is not judged. Assuming that the first trusted node receives verification results of the trusted nodes B, C and D in the blockchain network, wherein the verification results are correct, correct and incorrect respectively, the respective weight information is 1, 1 and 3 respectively, that is, the sum of the weight information corresponding to the correct result is 2, and the sum of the weight information corresponding to the incorrect result is 3, the final verification result is incorrect.
Optionally, after the step of generating the final verification result of the information to be verified, the first trusted node may further include:
and the first trusted node sends a final verification result of the information to be verified to the demand node.
The first trusted node issues a final verification result of the encrypted information to be verified to the blockchain network;
all the trusted nodes in the block chain network increase the weight information corresponding to the trusted nodes with the same verification result as the final verification result by 1 in a preset database.
In this embodiment, after the first trusted node issues the final verification result of the encrypted information to be verified to the blockchain network, all the trusted nodes in the blockchain network update their respective preset databases, and the weight information of the trusted node whose verification result is the same as the final verification result in the actual verification process is increased by 1, so that the authority of the trusted node verification result is measured by the weight information, and the accuracy of the final verification result is further ensured.
According to the information verification method based on the blockchain, the first trusted node receives the information to be verified and acquires the classification label corresponding to the information to be verified, and the first trusted node inquires whether the trusted node corresponding to the classification label exists in the blockchain network in the preset database of the first trusted node, so that the information to be verified can be rapidly mapped to one or more trusted nodes with verification functions on the information to be verified in the blockchain network; meanwhile, the first trusted node receives the verification result of the encrypted information to be verified, which is issued in the blockchain network, decrypts the verification result, comprehensively judges the decrypted verification result, and generates a final verification result of the information to be verified, thereby solving the problem that the masses and third parties cannot obtain the final verification result due to different verification results of different platforms in the existing verification method. In addition, the problem that the current verification method cannot trace the verification process of information by masses and third parties is solved through the information verification based on the blockchain.
Example 2:
as shown in fig. 2, the present embodiment provides a blockchain-based information verification device, which is applied to a first trusted node, and the device includes:
the classification acquisition module 202 is configured to receive information to be verified and acquire a classification label corresponding to the information to be verified;
the node query module 204 is connected to the classification acquisition module 202, and is configured to query a preset database for whether there are trusted nodes corresponding to classification labels in the blockchain network, where the preset database includes node identifiers, classification label sets and public keys of all trusted nodes in the blockchain network;
the first issuing module 206 is connected with the node query module 204, and is configured to encrypt the information to be verified and the classification label by using a public key of the trusted node corresponding to the classification label when the trusted node corresponding to the classification label exists, and issue the encrypted information to be verified and the classification label to the blockchain network;
the comprehensive judging module 208 is connected with the first sending module 206, and is configured to receive the verification result of the encrypted information to be verified, which is issued in the blockchain network, decrypt the verification result, and comprehensively judge the decrypted verification result to generate a final verification result of the information to be verified;
Optionally, the apparatus may further include:
and the second issuing module is connected with the node query module 204 and is used for encrypting the information to be verified and the classification label by adopting public keys of all the trusted nodes in the blockchain network if the trusted nodes corresponding to the classification label do not exist, and issuing the encrypted information to be verified and classification label to the blockchain network.
Optionally, the apparatus may further include:
the network information acquisition module is used for enabling the demand node to crawl network information with higher forwarding quantity in preset time from the Internet to serve as information to be verified, and sending the information to be verified to the first trusted node;
optionally, the classification acquisition module 202 may further include:
the first receiving module is used for receiving the information to be verified sent by the demand node by the first trusted node;
the classification label module is used for carrying out semantic classification on the information to be verified by the first trusted node to obtain a classification label;
optionally, the apparatus may further include:
and the first sending module is used for sending the final verification result of the information to be verified to the demand node by the first trusted node.
Optionally, the network information acquisition module may further include:
the crawling module is used for crawling network information in preset time from the Internet by the demand node, wherein the network information comprises title information, text information and URL information;
the extraction module is used for extracting network information which is corresponding to different URL information and has the same title information and text information from the network information and has the occurrence number larger than a preset threshold value as the information to be verified, wherein the information to be verified comprises the title information and the text information;
and the second sending module is used for sending the information to be verified to the first trusted node by the requiring node.
Optionally, the classification tag module may further include:
guan Jianzi extracting module, configured to extract one or more key words in the header information by using the first trusted node;
the semantic classification module is used for carrying out semantic classification on the one or more key words by the first trusted node to obtain classification labels;
optionally, the node query module 204 may further include:
the first query module is used for querying whether the classification label set corresponding to each node identifier contains the classification label in a preset database of the first trusted node;
And the trusted node determining module is used for determining the node corresponding to the node identifier as the trusted node corresponding to the classification label if the classification label set corresponding to the node identifier contains the classification label.
Optionally, the first distribution module 206 may further include:
the first processing module is used for inquiring a public key corresponding to the trusted node in the preset database if the trusted node corresponding to the classification label exists;
the second processing module is used for encrypting the information to be verified and the classification label by the first trusted node by adopting a public key corresponding to the trusted node;
the third processing module is configured to issue the encrypted information to be verified and the classification tag to the blockchain network respectively by the first trusted node, and after the encrypted information to be verified and the classification tag are used to trigger the trusted node to decrypt the information to be verified and the classification tag with a private key, verify the information to be verified, generate a HASH digest by using a verification result, the information to be verified and the classification tag, and issue the HASH digest, the verification result, the information to be verified and the classification tag to the blockchain network.
Optionally, the second publishing module may further include:
a fourth processing module, configured to query, if there is no trusted node corresponding to the classification label, the first trusted node in the preset database for public keys corresponding to all trusted nodes in the blockchain network;
a fifth processing module, configured to encrypt the information to be verified and the classification label by using public keys corresponding to all the trusted nodes by using the first trusted node;
the sixth processing module is configured to issue the encrypted information to be verified and the classification tag to the blockchain network respectively by the first trusted node, and after each trusted node in the blockchain network decrypts the information to be verified and the classification tag with respective private keys, determine whether the information to be verified can be verified, and verify the information to be verified and generate a HASH digest by using a verification result, the information to be verified and the classification tag when the information to be verified can be verified is determined, and issue the HASH digest, a verification result, the information to be verified and the classification tag to the blockchain network.
Optionally, the comprehensive judgment module 208 may further include:
the second receiving module is used for receiving the HASH digest, the verification result, the information to be verified and the classification label which are sent by one or more trusted nodes in the blockchain network by the first trusted node;
the judging module is used for carrying out HASH processing on the verification result, the information to be verified and the classification label by the first trusted node, comparing the HASH processed result with the HASH abstract and judging whether the verification result, the information to be verified and the classification label are tampered or not;
and the final verification result module is used for inquiring weight information corresponding to the one or more trusted nodes in a preset database by the first trusted node if the verification result, the information to be verified and the classification label are not tampered, and comprehensively judging according to the weight information and the verification result to generate a final verification result of the information to be verified.
Optionally, the apparatus may further include:
the first storage module is used for issuing the verification result, the node identification and the classification label of the encrypted information to be verified to the blockchain network by the trusted node for verifying the information to be verified;
And the classification label updating module is used for decrypting the verification result, the node identification and the classification label of the encrypted information to be verified, which are issued to the blockchain network, by all the trusted nodes in the blockchain network, and updating a preset database of the classification label updating module according to the decrypted node identification and the classification label.
Optionally, the preset database further includes weights of all trusted nodes in the blockchain network, and the apparatus may further include:
the second storage module is used for the first trusted node to issue the final verification result of the encrypted information to be verified to the blockchain network;
and the weight updating module is used for adding 1 to weight information corresponding to the trusted nodes with the same verification result as the final verification result in a preset database of the trusted nodes in the blockchain network.
Example 3:
as shown in fig. 3, the present embodiment provides a blockchain-based information verification device, including a memory 21 and a processor 22, the memory 21 storing instructions, the processor 22 executing the instructions to perform the blockchain-based information verification method in embodiment 1.
The memory 21 is connected to the processor 22, the memory 21 may be a flash memory, a read-only memory, or other memories, and the processor 22 may be a central processing unit or a single chip microcomputer.
The blockchain-based information verification device provided in embodiments 2 to 3 receives the information to be verified and obtains the classification label corresponding to the information to be verified through the first trusted node, and the first trusted node queries whether the blockchain network has the trusted node corresponding to the classification label in the preset database of the first trusted node, so that the information to be verified can be rapidly mapped to one or more trusted nodes with verification functions on the verification information in the blockchain network; meanwhile, the first trusted node receives the verification result of the encrypted information to be verified, which is issued in the blockchain network, decrypts the verification result, comprehensively judges the decrypted verification result, and generates a final verification result of the information to be verified, thereby solving the problem that the masses and third parties cannot obtain the final verification result due to different verification results of different platforms in the existing verification method. In addition, the problem that the current verification method cannot trace the verification process of information by masses and third parties is solved through the information verification based on the blockchain.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (9)
1. A blockchain-based information verification method, the method comprising:
the first trusted node receives information to be verified and acquires a classification label corresponding to the information to be verified;
the first trusted node queries whether the trusted node corresponding to the classification label exists in a blockchain network in a preset database of the first trusted node, wherein the preset database comprises node identifiers, classification label sets and public keys of all the trusted nodes in the blockchain network;
if the trusted node corresponding to the classification label exists, the first trusted node encrypts the information to be verified and the classification label by adopting a public key of the trusted node corresponding to the classification label, and issues the encrypted information to be verified and the classification label to a blockchain network, and after the trusted node corresponding to the classification label in the blockchain network decrypts the information to be verified and the classification label by using a private key, the information to be verified is verified;
if the trusted nodes corresponding to the classification labels do not exist, the first trusted node adopts public keys of all trusted nodes in the blockchain network to encrypt the information to be verified and the classification labels respectively, the encrypted information to be verified and the classification labels are issued to the blockchain network, and each trusted node in the blockchain network is triggered to decrypt the information to be verified and the classification labels by using respective private keys and then verify the information to be verified;
The first trusted node queries weight information corresponding to one or more trusted nodes in a preset database, receives the encrypted verification result of the information to be verified, which is issued in the blockchain network, decrypts the verification result, comprehensively judges according to the weight information and the decrypted verification result, and generates a final verification result of the information to be verified.
2. The blockchain-based information verification method of claim 1, wherein prior to the step of the first trusted node receiving information to be verified and obtaining a class label corresponding to the information to be verified, the method further comprises:
the demand node climbs network information with higher forwarding quantity in preset time from the Internet to serve as information to be verified, and the information to be verified is sent to the first trusted node;
the first trusted node obtains a classification label corresponding to information to be verified, and the classification label comprises:
the first trusted node receives information to be verified sent by the demand node;
the first trusted node performs semantic classification on the information to be verified to obtain a classification label;
the first trusted node further comprises, after generating a final verification result of the information to be verified:
And the first trusted node sends a final verification result of the information to be verified to the demand node.
3. The blockchain-based information verification method according to claim 2, wherein the requiring node crawls network information with higher forwarding number in a preset time from the internet as information to be verified, and sends the information to be verified to the first trusted node, including:
the demand node crawls network information in preset time from the Internet, wherein the network information comprises title information, text information and URL information;
the demand node extracts network information which is corresponding to different URL information and has the same title information and text information from the network information, and the occurrence number of the network information is larger than a preset threshold value as the information to be verified, wherein the information to be verified comprises the title information and the text information;
the requiring node sends the information to be verified to the first trusted node;
the first trusted node performs semantic classification on the information to be verified to obtain a classification label, and the method comprises the following steps:
the first trusted node extracts one or more key words in the title information;
The first trusted node performs semantic classification on the one or more key words to obtain a classification label;
the first trusted node queries whether a trusted node corresponding to the classification label exists in a blockchain network in a preset database of the first trusted node, and the method comprises the following steps:
the first trusted node queries whether a classification label set corresponding to each node identifier contains the classification label in a preset database of the first trusted node;
if the classification label set corresponding to the node identifier contains the classification label, determining the node corresponding to the node identifier as a trusted node corresponding to the classification label.
4. The blockchain-based information verification method of claim 3, wherein if the trusted node corresponding to the classification tag exists, the first trusted node encrypts the information to be verified and the classification tag by using a public key of the trusted node corresponding to the classification tag, and issues the encrypted information to be verified and the classification tag to a blockchain network, including:
if the trusted node corresponding to the classification label exists, the first trusted node queries a public key corresponding to the trusted node in the preset database;
The first trusted node encrypts the information to be verified and the classification label by adopting a public key corresponding to the trusted node;
the first trusted node respectively issues encrypted information to be verified and classification labels to a blockchain network, the encrypted information to be verified and the classification labels are used for triggering the trusted node to decrypt the information to be verified and the classification labels by using a private key, then the information to be verified is verified, a verification result, the information to be verified and the classification labels are generated into a HASH abstract, and meanwhile the HASH abstract, the verification result, the information to be verified and the classification labels are issued to the blockchain network.
5. The blockchain-based information verification method of claim 4, wherein if the trusted node corresponding to the classification tag does not exist, the first trusted node encrypts the information to be verified and the classification tag by using public keys of all trusted nodes in a blockchain network, and issues the encrypted information to be verified and the classification tag to the blockchain network, including:
if the trusted node corresponding to the classification label does not exist, the first trusted node queries public keys corresponding to all the trusted nodes in the blockchain network in the preset database;
The first trusted node adopts public keys corresponding to all the trusted nodes to encrypt the information to be verified and the classification labels respectively;
the first trusted node respectively issues encrypted information to be verified and classification labels to a blockchain network, each trusted node in the blockchain network is used for triggering each trusted node to decrypt the information to be verified and the classification labels by using respective private keys, determining whether the information to be verified can be verified, verifying the information to be verified under the condition that the information to be verified can be verified, generating a HASH abstract by using a verification result, the information to be verified and the classification labels, and issuing the HASH abstract, a verification result, the information to be verified and the classification labels to the blockchain network.
6. The blockchain-based information verification method of claim 5, wherein the first trusted node receives the verification result of the encrypted information to be verified issued in the blockchain network, decrypts the verification result, comprehensively determines the decrypted verification result, and generates a final verification result of the information to be verified, including:
The first trusted node receives the HASH digest, the verification result, the information to be verified and the classification label which are sent by one or more trusted nodes in a blockchain network;
the first trusted node carries out HASH processing on the verification result, the information to be verified and the classification label, compares the HASH processed result with the HASH abstract, and judges whether the verification result, the information to be verified and the classification label are tampered;
and if the verification result, the information to be verified and the classification label are not tampered, the first trusted node queries weight information corresponding to the one or more trusted nodes in a preset database, and comprehensively judges according to the weight information and the verification result to generate a final verification result of the information to be verified.
7. The blockchain-based information verification method of any of claims 1-6, wherein after the first trusted node publishes the encrypted information to be verified and the classification tag to the blockchain network, further comprising:
the trusted node for verifying the information to be verified issues the verification result, the node identification and the classification label of the encrypted information to be verified to the blockchain network;
And decrypting the verification result, the node identification and the classification label of the encrypted information to be verified, which are issued to the blockchain network, by all the trusted nodes in the blockchain network, and updating the preset database of the trusted nodes according to the decrypted node identification and the classification label.
8. The blockchain-based information verification method of claim 7, further comprising, after the step of the first trusted node generating a final verification result of the information to be verified:
the preset database also contains the weights of all the trusted nodes in the blockchain network;
the first trusted node issues a final verification result of the encrypted information to be verified to a blockchain network;
and adding weight information corresponding to the trusted nodes with the same verification result as the final verification result in a preset database of all the trusted nodes in the block chain network.
9. A blockchain-based information verification device for use in a first trusted node, comprising:
the classification acquisition module is used for receiving the information to be verified and acquiring a classification label corresponding to the information to be verified;
the node query module is used for querying whether the trusted nodes corresponding to the classification labels exist in the blockchain network in a preset database, wherein the preset database comprises node identifiers, classification label sets and public keys of all the trusted nodes in the blockchain network;
The first sending module is used for encrypting the information to be verified and the classification label by adopting a public key of the trusted node corresponding to the classification label when the trusted node corresponding to the classification label exists, releasing the encrypted information to be verified and the classification label to the blockchain network, triggering the trusted node corresponding to the classification label in the blockchain network to decrypt the information to be verified and the classification label by using a private key, and then verifying the information to be verified; the method comprises the steps that when a trusted node corresponding to the classification label does not exist, public keys of all trusted nodes in a blockchain network are adopted to encrypt information to be verified and the classification label respectively, the encrypted information to be verified and the encrypted classification label are issued to the blockchain network, and each trusted node in the blockchain network is triggered to decrypt the information to be verified and the classification label by using respective private keys and then verify the information to be verified;
the comprehensive judging module is used for inquiring weight information corresponding to one or more trusted nodes in a preset database, receiving the verification result of the encrypted information to be verified issued in the blockchain network, decrypting the verification result, and comprehensively judging according to the weight information and the decrypted verification result to generate a final verification result of the information to be verified.
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