CN112152982B - Processing method, device and medium of block chain information - Google Patents

Processing method, device and medium of block chain information Download PDF

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CN112152982B
CN112152982B CN201910582743.7A CN201910582743A CN112152982B CN 112152982 B CN112152982 B CN 112152982B CN 201910582743 A CN201910582743 A CN 201910582743A CN 112152982 B CN112152982 B CN 112152982B
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information
block chain
public key
blockchain
node device
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CN112152982A (en
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檀景辉
徐嗣焘
聂光耀
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
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  • General Engineering & Computer Science (AREA)
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Abstract

The embodiment of the invention discloses a method, a device and a medium for processing block chain information, wherein the method comprises the following steps: receiving query request information, wherein the query request information carries a block chain information identifier; searching for supervision information containing the block chain information identifier, wherein the supervision information also comprises processing indication information; and processing the block chain information corresponding to the block chain information identifier according to the processing indication information to obtain processed block chain information, and outputting the processed block chain information. By adopting the embodiment of the invention, the blockchain information can be processed according to the supervision information, and the condition that a user of the blockchain network service can only check the processed blockchain information is ensured.

Description

Processing method, device and medium of block chain information
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a medium for processing block chain information.
Background
The blockchain refers to a distributed ledger which combines data blocks in a sequential connection manner into a chained data structure and is cryptographically guaranteed to be non-falsifiable and non-counterfeitable. The data block stores two portions of data: at least one Block chain information and Block Header data (Block Header). Wherein each blockchain information includes details of a transaction (e.g., transaction amount, account information or signature), and the blockhead data includes information such as a Root Hash (Prev Hash) of a previous data block and a Root Hash (Root Hash) of a current data block. Since the data blocks are stored in a chain structure, once the blockchain information of a certain data block is changed, the Root Hash of the data block is changed, and the Root Hash of the data block is inconsistent with the Prev Hash of the next data block. Based on this, through the verification of the Prev Hash, the block chain information stored in the data block is ensured to be not falsifiable.
But as more and more traffic is carried over the blockchain, the information carried by the blockchain becomes richer and richer. The blockchain can ensure that the blockchain information stored in the data block is not falsifiable, but how to avoid the propagation and mass reading of sensitive, illegal, spam or rumors on the chain is a problem that needs to be solved at present.
Disclosure of Invention
Embodiments of the present invention provide a method, an apparatus, and a medium for processing blockchain information, which can process blockchain information according to supervision information, and ensure that a user of a blockchain network service can only view the processed blockchain information.
In a first aspect, an embodiment of the present invention provides a method for processing blockchain information, where the method includes:
receiving query request information, wherein the query request information carries a block chain information identifier, and further searching for supervision information containing the block chain information identifier, the supervision information further comprises processing indication information, processing the block chain information corresponding to the block chain information identifier according to the processing indication information to obtain processed block chain information, and outputting the processed block chain information.
In the technical scheme, when any node device in the blockchain network receives the query request information for the blockchain information, the blockchain information can be processed, for example, shielded or modified, according to the supervision information, so that it is ensured that a user of the blockchain network service can only view the processed blockchain information.
In one implementation, the supervision information may be acquired before the query request information is received, the supervision information further includes a first digital signature, the first digital signature is verified by using a first public key stored in advance, and when the verification is successful, the supervision information is issued to the blockchain network.
In the technical scheme, the supervision information is issued to the blockchain network only under the condition that the first digital signature in the supervision information is successfully verified, so that the supervision information is reliably transmitted in the blockchain network. Then, the user can use the device to perform the operation,
in one implementation, a founder block may be obtained prior to verifying the first digital signature using the pre-stored first public key, the founder block including the first public key, and then the first public key is stored.
In the technical scheme, for a blockchain network builder, the first public key can be preset in the created zone for any node device in the blockchain network to read. By this scheme, the authenticity of the first public key can be ensured.
In one implementation, before verifying the first digital signature by using the first pre-stored public key, public key information may be obtained, where the public key information includes the first public key and the second digital signature, the second digital signature is verified by using the second pre-stored public key, and when the verification is successful, the first public key is issued to the blockchain network and the first public key is stored.
In the technical scheme, after the public key information is obtained, the user identity of the uploaded public key information can be verified, and only a specific user identity can have the authority of uploading the first public key. According to the scheme, the public key information containing the first public key is issued to the block chain network only under the condition that the second digital signature is successfully verified, and the reliability of the first public key can be ensured through the block chain network.
In one implementation, obtaining public key information includes: public key information is obtained through the first service interface.
In the technical scheme, the verification and storage of the first public key can be realized through business function logic.
In one implementation, obtaining public key information includes: and installing a first intelligent contract and acquiring public key information through a first intelligent contract interface.
In the technical scheme, the verification and storage of the first public key can be realized through intelligent contract logic.
In one implementation, obtaining regulatory information includes: and acquiring the supervision information through a second service interface.
In the technical scheme, the verification and the processing of the supervision information can be realized through the service function logic.
In one implementation, obtaining regulatory information includes: and installing a second intelligent contract and acquiring supervision information through a second intelligent contract interface.
In the technical scheme, the verification and the processing of the supervision information can be realized through intelligent contract logic.
In one implementation, if the processing indication information is used to indicate to perform the block chain information masking processing, then the processing is performed on the block chain information corresponding to the block chain information identifier according to the processing indication information, so as to obtain the processed block chain information, including: and shielding the block chain information to obtain the processed block chain information.
In the technical scheme, the block chain information can be shielded according to the supervision information, and a user of the block chain service can not view shielded contents.
In one implementation, if the processing indication information includes blockchain modification information and the processing indication information is used to indicate that the blockchain information is modified, processing the blockchain information corresponding to the blockchain information identifier according to the processing indication information to obtain processed blockchain information, includes: and modifying the block chain information according to the block chain modification information to obtain the processed block chain information.
In the technical scheme, the blockchain information can be modified according to the processing indication information, so that a user of the blockchain service can be ensured to view the processed blockchain information.
In a second aspect, an embodiment of the present invention provides a device for processing blockchain information, where the device has a function of implementing the method for processing blockchain information described in the first aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.
In one implementation, the apparatus for processing blockchain information includes a receiving module, a processing module, and a sending module. The receiving module is used for receiving query request information, and the query request information carries a block chain information identifier; the processing module is used for searching for the supervision information containing the block chain information identifier, the supervision information also comprises processing indication information, and the block chain information corresponding to the block chain information identifier is processed according to the processing indication information to obtain processed block chain information; and the sending module is further used for outputting the processed block chain information.
In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores a computer program, where the computer program includes program instructions, and the program instructions, when executed by a processor, cause the processor to execute the processing method of the block chain information according to the first aspect.
In a fourth aspect, an embodiment of the present application provides a node device, including a receiver, a processor, and a transmitter, where the receiver is configured to receive query request information, where the query request information carries a block chain information identifier; the processor is used for searching for the supervision information containing the block chain information identifier, the supervision information also comprises processing indication information, and the block chain information corresponding to the block chain information identifier is processed according to the processing indication information to obtain processed block chain information; a transmitter for outputting the processed blockchain information.
In a fifth aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor and an interface circuit, where the interface circuit is coupled to the processor,
the processor is configured to execute a computer program or instructions to implement the method according to the first aspect;
the interface circuit is used for communicating with other modules outside the chip system.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings required to be used in the embodiments or the background art of the present invention will be described below.
Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for processing blockchain information according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating another method for processing blockchain information according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a Fabric blockchain system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a device for processing blockchain information according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a node device disclosed in the embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described below with reference to the drawings.
The block chain is a chain data structure formed by combining data blocks in a sequential connection mode according to a time sequence, and a distributed account book which ensures data to be not falsified and forged in a cryptographic mode is provided. The data block includes block chain information and block header data, and the block header data includes information such as Prev Hash of a previous data block and Root Hash of a current data block. In a specific implementation, once the blockchain information of a certain data block is changed, the Root Hash of the data block is changed, and the Root Hash of the data block is inconsistent with the Prev Hash of the next data block. Based on this, through the verification of the Prev Hash, the block chain information stored in the data block is ensured to be not falsifiable. However, the blockchain network cannot ensure that the blockchain information stored in the data block is legal, and if illegal information, garbage information or rumors are stored in the data block, the illegal information, garbage information or rumors will be widely spread and read in a large amount in the blockchain network, and the illegal information, garbage information or rumors stored in the data block cannot be deleted. In addition, if the data block stores sensitive information that is not publicly transmitted, the sensitive information is widely transmitted and read in a large amount in the block chain network, and the sensitive information is leaked. Based on this, how to avoid the propagation and mass reading of sensitive, illegal, spam or rumors on the chain is a problem that needs to be solved.
The embodiment of the application provides a processing method of block chain information, wherein first node equipment can receive query request information, the query request information carries a block chain information identifier, the first node equipment searches for supervision information containing the block chain information identifier, the supervision information further comprises processing indication information, the block chain information corresponding to the block chain information identifier is processed according to the processing indication information, processed block chain information is obtained, and the processed block chain information is output. In the embodiment of the application, any node device in the blockchain network can shield or modify the blockchain information according to the supervision information, and the like, so that a user of the blockchain network service can only view the shielded or modified blockchain information.
The first node device may be an access terminal, a User Equipment (UE), a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile terminal, a user terminal, a wireless communication device, a user agent, or a user equipment. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capability, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in the internet of things, a virtual reality device, a terminal device in a future 5G network, a terminal device in a future evolved Public Land Mobile Network (PLMN), or the like.
In order to better understand the method, apparatus, and medium for processing block chain information disclosed in the embodiments of the present application, a communication system to which the embodiments of the present application are applied is first described below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure. As shown in fig. 1, the communication system includes at least a first node apparatus 101 and a second node apparatus 102.
The first node apparatus 101 and the second node apparatus 102 constitute a blockchain network. The first node device 101 may receive query request information, where the query request information carries a blockchain information identifier, the first node device 101 may search for supervision information including the blockchain information identifier, where the supervision information further includes processing instruction information, and process, according to the processing instruction information, blockchain information corresponding to the blockchain information identifier to obtain processed blockchain information, and output the processed blockchain information. Similarly, when the second node device 102 receives the query request information, if the query request information carries the blockchain information identifier, the second node device 102 may search for the supervision information including the blockchain information identifier, where the supervision information further includes the processing instruction information, and process the blockchain information corresponding to the blockchain information identifier according to the processing instruction information, to obtain the processed blockchain information. By the scheme, the synchronization of the processed block chain information in the block chain network can be realized.
In an implementation manner, before the first node device 101 receives the query request information, the supervision information may be acquired, the supervision information further includes a first digital signature, the first node device 101 may further verify the first digital signature by using a first public key stored in advance, and when the verification is successful, the supervision information is issued to the blockchain network. For example, the user having the first private key has a right to shield or modify the blockchain information, for example, when the user needs to shield or modify the blockchain information, the processing instruction information may be generated by the first node device 101, and the processing instruction information and the blockchain information identifier are digitally signed by the first node device 101 using the first private key uploaded by the user to obtain a first digital signature, and the first node device 101 generates the supervision information including the blockchain information identifier, the processing instruction information, and the first digital signature. The first node device 101 stores a first public key in advance, and only when the first node device 101 successfully verifies the first digital signature using the first public key, the supervision information is sent to any node device in the blockchain network except the first node device 101, for example, the second node device 102. In addition, after receiving the supervision information from the first node device 101, the second node device 102 may verify the first digital signature using a first public key stored in advance by the second node device 102, and in a case where the verification of the first digital signature using the first public key is successful, the second node device 102 may store the supervision information. Then, the user can use the device to perform the operation,
any node device in the blockchain network stores at least one data block, and the block identifier can be used for identifying the data block. Each data chunk may include at least one blockchain information, the information identification identifying blockchain information.
The regulatory information may include a blockchain information identification, processing indication information, and a first digital signature.
The block chain information identifier may include a block identifier and an information identifier, and the node device may determine that the block chain information identified by the block chain information identifier is the block chain information identified by the information identifier in the data block identified by the block identifier. The format of the blockchain information identifier may be a blockchain identifier-information identifier, for example, if the blockchain information identifier is 1-10, the data block identified by the blockchain identifier 1 is a 1 st data block, and the blockchain information identified by the information identifier 10 is a 10 th blockchain information, that is, the blockchain information identifier 1-10 indicates a 10 th transaction in the 1 st data block, the node device may determine that the 10 th blockchain information in the first data block is the blockchain information identified by the blockchain information identifier.
The processing indication information may include administrative actions and notes. The supervision action is used for indicating to mask or modify the blockchain information, for example, when the supervision action is used as field "mask", the node device may determine that the blockchain information needs to be masked; when the supervision action is field "modify", the node device may determine that modification processing needs to be performed on the blockchain information. The remarks may include the mask reason or the blockchain modification information, and the node device may modify the blockchain information according to the blockchain modification information.
The first digital signature may be obtained by the first node apparatus 101 digitally signing the blockchain information identifier and the processing instruction information using the first private key uploaded by the user. After the node device acquires the supervision information, the block chain information identifier and the processing indication information can be acquired only when the first digital signature is successfully verified.
The node device described in the embodiment of the present application may be any node device in a blockchain network.
For example, the regulatory information may be as shown in table 1:
TABLE 1
Block number
Transaction sequence number
Supervisory action (Shielding/modifying)
Supplementary notes (reasons for shielding/content of modification)
First digital signature
The supervision information may have various data structures, such as tables, files, etc., and the structural diagram of the supervision information shown in table 1 is only for example and does not limit the embodiment of the present invention. As shown in table 1, the block id may be represented by a block number, the information id may be represented by a transaction serial number, and the processing instruction information includes a supervision action and a comment.
It should be noted that the node device that acquires the supervision information and issues the supervision information to the node device of the blockchain network, and the node device that receives the query request information and processes the blockchain information corresponding to the blockchain information identifier according to the processing instruction information may be the same node device or different node devices. For example, the first node apparatus 101 acquires the supervision information, verifies a first digital signature included in the supervision information using a first public key stored in advance, and issues the supervision information to the blockchain network when the verification is successful. In addition, the second node device 102 receives the query request information, the query request information carries the blockchain information identifier, searches for the supervision information including the blockchain information identifier, and the supervision information further includes processing instruction information, processes the blockchain information corresponding to the blockchain information identifier according to the processing instruction information, obtains processed blockchain information, and outputs the processed blockchain information. For another example, the first node device 101 acquires the supervision information, verifies the first digital signature included in the supervision information by using the first public key stored in advance, and issues the supervision information to the blockchain network when the verification is successful. Then, the first node device 101 receives the query request information, where the query request information carries the blockchain information identifier, searches for the supervision information including the blockchain information identifier, and the supervision information further includes processing instruction information, processes the blockchain information corresponding to the blockchain information identifier according to the processing instruction information, obtains processed blockchain information, and outputs the processed blockchain information.
It should be noted that the blockchain network at least includes the first node device 101 and the second node device 102, and the blockchain network shown in fig. 1 is composed of the first node device 101 and the second node device 102, which is only used for example and does not constitute a limitation to the embodiment of the present invention, for example, the blockchain network includes the first node device, the second node device, and the third node device.
It should be understood that the communication system described in the embodiment of the present invention is for more clearly illustrating the technical solution of the embodiment of the present invention, and does not form a limitation on the technical solution provided in the embodiment of the present invention, and as a person having ordinary skill in the art knows that along with the evolution of the system architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems.
Referring to fig. 2, based on the schematic architecture diagram of the communication system shown in fig. 1, fig. 2 is a schematic flow chart of a method for processing block chain information according to an embodiment of the present invention, where the method includes, but is not limited to, the following steps:
step S201: the first node equipment acquires supervision information, wherein the supervision information comprises a block chain information identifier, processing indication information and a first digital signature.
The manner of acquiring the supervision information by the first node device may include the following two ways:
and (I) the first node equipment acquires the supervision information through the second service interface.
For example, the first node device may provide a second service interface for access by the user. The user may access the second service interface and set the administration information. After the first node device acquires the supervision information, the identity of the user can be verified, and only the specific user identity can have the authority of uploading the supervision information. After the supervision information is successfully verified, the first node device stores the blockchain information identification and the processing indication information in a database or a disk, and meanwhile, distributes the supervision information to other node devices, such as a second node device, in the blockchain network except the first node device. Illustratively, the first node device may broadcast the supervision information to any node device in the block chain network through the gossip network.
For example, the way for the first node device to verify the identity of the user may be: the user uploads the first private key, the block chain information identifier and the processing indication information through the second service interface of the first node device, the first node device carries out digital signature on the block chain information identifier and the processing indication information according to the first private key to obtain a first digital signature, and then the first node device generates supervision information containing the block chain information identifier, the processing indication information and the first digital signature. The first node device may then verify the first digital signature according to the first public key stored in advance, and when the verification is successful, the first node device may determine that the authentication of the user is successful.
And (II) the first node equipment installs a second intelligent contract and acquires the supervision information through a second intelligent contract interface.
For example, the first node device may provide a second intelligent contract interface for access by a user. The user can access the second intelligent contract interface and set the supervision information. After the first node device acquires the supervision information, the identity of the user can be verified, and only the specific user identity can have the authority of uploading the supervision information. After the supervision information is successfully verified, the first node device stores the blockchain information identification and the processing indication information in a database or a disk, and meanwhile, distributes the supervision information to other node devices, such as a second node device, in the blockchain network except the first node device. Illustratively, the first node device may broadcast the supervision information to any node device in the block chain network through the gossip network.
For example, the way for the first node device to verify the identity of the user may be: the user uploads the first private key, the block chain information identifier and the processing indication information through a second intelligent contract interface of the first node device, the first node device carries out digital signature on the block chain information identifier and the processing indication information according to the first private key to obtain a first digital signature, and then the first node device generates supervision information containing the block chain information identifier, the processing indication information and the first digital signature. The first node device may then verify the first digital signature according to the first public key stored in advance, and when the verification is successful, the first node device may determine that the authentication of the user is successful.
The first service interface and the second service interface may be the same service interface or different service interfaces, and are not limited in this embodiment.
In an implementation manner, since the first digital signature is obtained by the first node device digitally signing the block chain information identifier and the processing instruction information by using the first private key uploaded by the user, after the first node device obtains the supervision information, the first public key needs to be used to verify the first digital signature. In order to ensure the reliability of the supervision information, it is necessary to improve the reliability of the first public key acquired by the first node device, and based on this, the first node device may acquire the first public key in the following two ways.
Before the first node device obtains the supervision information, a created block can be obtained, the created block comprises a first public key, and the first node device can store the first public key.
Here, the created block refers to the first earliest constructed data block in the blockchain network. For example, after the blockchain system builder builds the blockchain network, the first public key may be pre-provisioned into the founder block. The blockchain system builder can upload the first public key through any node device in the blockchain network. For example, the created block may be located in a first node device, and then the first node device may transmit the created block to the blockchain network, that is, send the created block to any node device in the blockchain network except the first node device, for example, a second node device, and at the same time, the first node device may store the first public key, and the second node device may also obtain and store the first public key. For another example, the created block may be located in the second node device, and then the second node device may transmit the created block to the blockchain network, that is, send the created block to any node device in the blockchain network except the second node device, for example, the first node device, and meanwhile, the second node device may store the first public key, and the first node device may also obtain and store the first public key. Through the scheme, the synchronization of the first public key in the block chain network can be realized.
According to the embodiment of the application, the authenticity of the first public key does not need to be verified, the authenticity of the first public key is guaranteed by a block chain system builder, and the processing efficiency of the first public key can be improved.
Second, before the first node device acquires the supervision information, public key information may be acquired, where the public key information includes the first public key and the second digital signature. The first node device may verify the second digital signature using a pre-stored second public key. When the verification is successful, the first node device may issue the public key information to the blockchain network to which the first node device belongs, and at the same time, the first node device may further store the first public key. In addition, after the first node device issues the public key information to the blockchain network, any node device in the blockchain network can verify the first digital signature by using the second public key, and when the verification passes, the public key information is stored.
In this embodiment, the first node device issues the public key information to the blockchain network to which the first node device belongs, and synchronization of the first public key in the blockchain network may be achieved through a consensus algorithm. For example, after the public key information is identified through the blockchain network, the first public key can be packaged into the data block, so that reliable propagation of the first public key in the blockchain network is realized.
The second digital signature is obtained by the first node device performing digital signature on the first public key by using a second private key uploaded by the user, and after receiving the public key information, the first node device needs to verify the second digital signature by using the second public key. The second public key may be preset into the founder block by the blockchain system builder to achieve synchronization in the blockchain network.
In order to ensure the reliability of the public key information, it is necessary to improve the reliability of the second public key acquired by the first node device. For example, after the blockchain system builder builds the blockchain network, the second public key may be pre-provisioned into the created block. The blockchain system builder can upload the second public key through any node device in the blockchain network. For example, the created block may be located in a first node device, and then the first node device may transmit the created block to the blockchain network, that is, send the created block to any node device in the blockchain network except the first node device, for example, a second node device, and at the same time, the first node device may store the second public key, and the second node device may also obtain and store the second public key. For another example, the created block may be located in the second node device, and then the second node device may transmit the created block to the blockchain network, that is, send the created block to any node device in the blockchain network except the second node device, for example, the first node device, and meanwhile, the second node device may store the second public key, and the first node device may also obtain and store the second public key. Through the scheme, the synchronization of the second public key in the blockchain network can be realized.
The method for the first node device to obtain the public key information may include the following two methods:
the first node device sends public key information to the first node device through the first service interface.
For example, a first node device may provide a first service interface for access by a user. The user may access the first service interface and set the public key information. After the first node device acquires the public key information, the identity of the user can be verified, and only with the specific user identity, the first node device can have the authority of uploading the public key information. After the verification of the public key information is successful, the first node device stores the first public key in a database or a disk, and simultaneously issues the public key information to other node devices, such as a second node device, in the blockchain network except the first node device. Illustratively, the first node device may broadcast the public key information to any node device in the block chain network through the gossip network.
For example, the way for the first node device to verify the identity of the user may be: the user uploads the second private key and the first public key through the first service interface of the first node device, the first node device carries out digital signature on the first public key according to the second private key to obtain a second digital signature, and then the first node device generates public key information containing the first public key and the second digital signature. The first node device may then verify the second digital signature according to the pre-stored second public key, and when the verification is successful, the first node device may determine that the authentication of the user is successful. The second public key pre-stored by the first node device may be acquired in the foundational block.
And (II) the first node equipment installs the first intelligent contract and sends the public key information to the second node equipment through the first intelligent contract interface.
For example, a first node device may provide a first intelligent contract interface for access by a user. The user may access the first intelligent contract interface and set public key information. After the first node device acquires the public key information, the identity of the user can be verified, and only with the specific user identity, the first node device can have the authority of uploading the public key information. After the verification of the public key information is successful, the first node device stores the first public key in a database or a disk, and simultaneously sends the public key information to any node device in the blockchain network, such as a second node device. Illustratively, the first node device may broadcast the public key information to any node device in the block chain network through the gossip network.
For example, the way for the first node device to verify the identity of the user may be: the user uploads the second private key and the first public key through the first intelligent contract interface of the first node device, the first node device carries out digital signature on the first public key according to the second private key to obtain a second digital signature, and then the first node device generates public key information containing the first public key and the second digital signature. The first node device may then verify the second digital signature according to the pre-stored second public key, and when the verification is successful, the first node device may determine that the authentication of the user is successful. The second public key pre-stored by the first node device may be acquired in the foundational block.
The user may broadcast the first public key, the second public key, the public key information, or the supervision information through any node device in the blockchain network, and transmit the supervision information to the node device of the blockchain network, transmit the public key information to the node device of the blockchain network, transmit the first public key to the node device of the blockchain network, and transmit the second public key to the node device of the blockchain network, which may be different node devices or the same node device, which is not specifically limited by the embodiment of the present application. The first node device may be any node device in a blockchain network.
Step S202: the first node device verifies the first digital signature using the first public key.
Step S203: and when the verification is successful, the first node equipment issues the supervision information to the blockchain network to which the first node equipment belongs.
After the first node device issues the supervision information to the blockchain network to which the first node device belongs, any node device in the blockchain network can verify the first digital signature by using the first public key, and when the verification is passed, the supervision information is stored. Then, when any node device in the blockchain network receives the query request information for the blockchain information, the blockchain information corresponding to the blockchain information identifier can be processed according to the processing instruction information to obtain processed blockchain information, and the processed blockchain information is output.
Step S204: the first node equipment receives query request information, and the query request information carries a block chain information identifier.
Step S205: and the first node equipment processes the block chain information corresponding to the block chain information identifier according to the processing indication information to obtain the processed block chain information.
The first node device may store the supervisory information after successfully verifying the first digital signature using the first public key. When receiving the query request information, the first node device may determine whether the blockchain information identifier carried in the query request information matches the blockchain information identifier in the supervision information, and when the blockchain information identifier carried in the query request information matches the blockchain information identifier in the supervision information, the first node device may process the blockchain information according to the processing instruction information to obtain the processed blockchain information.
The manner for the first node device to determine whether the block identifier carried in the query request information matches the block chain information identifier in the supervision information may be: the first node device judges whether the block chain information identifier carried by the query request information exists in the block chain information identifier of the supervision information.
The processing performed by the first node device on the blockchain information includes, but is not limited to, a masking process or a modification process.
In one implementation, if the processing indication information is used to indicate that the blocking processing is performed on the blockchain information, the first node device may perform the blocking processing on the blockchain information to obtain the processed blockchain information.
For example, if the data block contains the content "123 abc & &", and the user needs to perform the masking processing on "abc" in the data block, the user may upload processing indication information for indicating the masking processing on the block chain information "abc" in the data block. After the first node device successfully verifies the first digital signature using the first public key, the block chain information "abc" may be masked, and the processed block chain information may be "123 & &".
In one implementation, if the processing indication information is used to indicate that modification processing is performed on the blockchain information, and the processing indication information includes the blockchain modification information, the first node device may modify the blockchain information according to the blockchain modification information to obtain processed blockchain information. The modification process may include, but is not limited to, information replacement or information addition, etc.
For example, if the content contained in the data block is "123 ABC & &", and the user needs to modify the block chain information "ABC" in the data block to "ABC", the user may upload processing indication information, where the processing indication information is used to indicate that the block chain information "ABC" in the data block is modified, and the modified block chain information is "ABC". After the first node device successfully verifies the first digital signature using the first public key, modification processing may be performed on the block chain information "ABC", and the processed block chain information may be "123 ABC &.
For another example, if the content contained in the data block is "123 ABC &", and the user needs to add "ABC" after the block chain information "ABC" in the data block, the user may upload processing indication information, where the processing indication information is used to indicate that the block chain information "ABC" in the data block is modified, and the modified block chain information is "abcabcabc". After the first node device successfully verifies the first digital signature by using the first public key, modification processing may be performed on the blockchain information "abc", and the processed blockchain information may be "123 abcABC & &".
Step S206: and the first node equipment outputs the processed block chain information.
For example, the processed blockchain information is displayed through a display screen of the first node device, or played through a speaker of the first node device.
In the embodiment of the invention, the first node equipment acquires the supervision information, verifies the first digital signature by using the first public key stored in advance, and when the verification is successful, the first node equipment issues the supervision information to the block chain network to which the first node equipment belongs. Then, the first node device may receive query request information, where the query request information carries the blockchain information identifier, and process, according to the processing instruction information, the blockchain information corresponding to the blockchain information identifier to obtain processed blockchain information, and output the processed blockchain information. The first node equipment issues the supervision information to the blockchain network only under the condition that the first digital signature in the supervision information is successfully verified, and reliable transmission of the supervision information in the blockchain network is achieved. Then, the first node device performs processing such as shielding or modifying on the blockchain information according to the supervision information, and ensures that a user of the blockchain network service can only view the blockchain information after the processing such as shielding or modifying.
Referring to fig. 3, based on the schematic architecture diagram of the communication system shown in fig. 1, fig. 3 is a schematic flow chart of another block chain information processing method according to an embodiment of the present invention, where the method includes, but is not limited to, the following steps:
step S301: the first node equipment acquires supervision information, wherein the supervision information comprises a block chain information identifier, processing indication information and a first digital signature.
Step S302: the first node device verifies the first digital signature using the first public key.
Step S303: and when the verification is successful, the first node equipment issues the supervision information to the blockchain network to which the first node equipment belongs.
Step S304: and the second node equipment receives query request information, wherein the query request information carries the block chain information identifier.
Step S305: and the second node equipment processes the block chain information corresponding to the block chain information identifier according to the processing indication information to obtain the processed block chain information.
Step S306: and the second node equipment outputs the processed block chain information.
In the embodiment of the invention, the first node equipment acquires the supervision information, verifies the first digital signature by using the first public key stored in advance, and when the verification is successful, the first node equipment issues the supervision information to the block chain network to which the first node equipment belongs. Then, the second node device may receive the query request information, where the query request information carries the blockchain information identifier, and process, according to the processing instruction information, the blockchain information corresponding to the blockchain information identifier to obtain processed blockchain information, and output the processed blockchain information. The first node equipment issues the supervision information to the blockchain network only under the condition that the first digital signature in the supervision information is successfully verified, and reliable transmission of the supervision information in the blockchain network is achieved. And then, the second node device performs processing such as shielding or modification on the blockchain information according to the supervision information, so as to ensure that a user of the blockchain network service can only view the shielded or modified blockchain information.
Based on the descriptions of fig. 1 to fig. 3, fig. 4 illustrates a scenario to which the processing method of the block chain information is applied. As shown in fig. 4, taking the open-source hyper-hedge Fabric blockchain system as an example, the function of processing, such as shielding or modifying blockchain information, is implemented. FIG. 4 is a schematic diagram of the Fabric blockchain system.
The setting of the first public key and the checking of the supervision information by any node device can be respectively realized by an intelligent contract.
The administrator system integrated Fabric SDK can call the first intelligent contract interface to realize the verification and storage of the first public key, and generates a data block through the sequencing of management node equipment (such as Orderer node equipment) to realize the broadcast of the block chain network. In addition, the administrator system can call the second intelligent contract interface to verify and store the supervision information, and generate a data block through the sequencing of the management node equipment to realize the broadcasting of the block chain network.
The Fabric blockchain system may verify the second digital signature and thus the authenticity of the first public key, and store the authentic first public key in the stateDB in the form of a key/value.
The Fabric blockchain system verifies the authenticity of the first digital signature based on the first public key stored in the stateDB. The supervision information passing the verification is stored in a stateDB in the form of key/value.
The format of the supervision information is AuditWithSigstruct:
typeAuditWithSigstruct{
AuditInfoAuditForTx// a piece of supervision information content
Signature[]byte
}
typeAuditForTxstruct{
AuditType int32//0 represents masking a transaction, and 1 represents modifying a transaction
TxNumber string/transaction serial number
Block Numer string// block sequence number of exchange
Modified contents of ModifiedInfo string/certain transaction
}
The common user system, the integrated Fabric SDK, can access the service interface of any node device to view the content of the data block. Any node device can read the content of the specific data block from the local account book according to the requirement of the user system, and simultaneously, shield or modify the specific transaction content of the data block which is read into the memory according to the locally stored supervision information. In this embodiment, the content of the data block in the locally stored ledger is not changed, and only the content of the output data block is changed.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a processing apparatus of blockchain information according to an embodiment of the present invention, where the processing apparatus of blockchain information is used to execute steps executed by a first node device in the method embodiment corresponding to fig. 2, and the processing apparatus of blockchain information may include:
a receiving module 501, configured to receive query request information, where the query request information carries the block chain information identifier;
a processing module 502, configured to search for supervision information including the blockchain information identifier, where the supervision information further includes processing indication information;
the processing module 502 is further configured to process the block chain information corresponding to the block chain information identifier according to the processing indication information, so as to obtain processed block chain information;
the sending module 503 is further configured to output the processed blockchain information.
In one implementation, the receiving module 501 is further configured to, before receiving the query request information, obtain the supervision information, where the supervision information further includes a first digital signature;
the processing module 502 is further configured to verify the first digital signature by using a pre-stored first public key;
the sending module 503 is further configured to issue the supervision information to the blockchain network when the verification is successful.
In one implementation, the receiving module 501 is further configured to obtain a created block before the processing module 502 verifies the first digital signature by using a pre-stored first public key, where the created block includes the first public key;
the processing module 502 is further configured to store the first public key.
In one implementation, the receiving module 501 is further configured to obtain public key information before the processing module 502 verifies the first digital signature by using a pre-stored first public key, where the public key information includes the first public key and a second digital signature;
the processing module 502 is further configured to verify the second digital signature by using a pre-stored second public key;
a sending module 503, configured to issue the first public key to the blockchain network when the verification is successful;
the processing module 502 is further configured to store the first public key.
In one implementation, the obtaining public key information by the receiving module 501 includes:
and acquiring the public key information through a first service interface.
In one implementation, the obtaining public key information by the receiving module 501 includes:
installing a first intelligent contract;
and acquiring the public key information through a first intelligent contract interface.
In one implementation, the receiving module 501 obtains the supervision information, including:
and acquiring the supervision information through a second service interface.
In one implementation, the receiving module 501 obtains the supervision information, including:
installing a second intelligent contract;
and acquiring the supervision information through a second intelligent contract interface.
In one implementation, the processing indication information is used to indicate that the block chain information is masked;
the processing module 502 processes the blockchain information corresponding to the blockchain information identifier according to the processing instruction information to obtain processed blockchain information, including:
and shielding the block chain information to obtain the processed block chain information.
In one implementation, the processing indication information includes block chain modification information, and the processing indication information is used for indicating that the block chain information is modified;
the processing module 502 processes the blockchain information corresponding to the blockchain information identifier according to the processing instruction information to obtain processed blockchain information, including:
and modifying the block chain information according to the block chain modification information to obtain the processed block chain information.
It should be noted that details that are not mentioned in the embodiment corresponding to fig. 5 and specific implementation manners of the steps executed by each module may refer to the embodiment shown in fig. 2 and the foregoing details, and are not described again here.
In one implementation, the associated functions implemented by the various modules in FIG. 5 may be implemented in connection with a processor, a receiver, and a transmitter. Referring to fig. 6, fig. 6 is a schematic structural diagram of a node device according to an embodiment of the present invention, where the node device includes a processor 601, a memory 602, a receiver 603, and a transmitter 604, and the processor 601, the memory 602, the receiver 603, and the transmitter 604 are connected through one or more communication buses.
Processor 601 is configured to support the node device to perform the corresponding functions of the first node device in the method of fig. 2. The processor 601 may be a Central Processing Unit (CPU), a Network Processor (NP), a hardware chip, or any combination thereof.
The memory 602 is used for storing program codes and the like. The memory 602 may include volatile memory (volatile memory), such as Random Access Memory (RAM); the memory 602 may also include a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory 602 may also comprise a combination of memories of the kind described above.
The receiver 603 is used for receiving data, for example, the receiver 603 is used for acquiring supervision information or query request information.
The transmitter 604 is used to transmit data, for example, the transmitter 604 is used to distribute supervision information to the blockchain network or output processed blockchain information.
The processor 601 may call the program code stored in the memory 602 to perform the following operations:
receiving query request information by a receiver 603, where the query request information carries the block chain information identifier;
searching for supervision information containing the block chain information identifier, wherein the supervision information further comprises processing indication information;
processing the block chain information corresponding to the block chain information identifier according to the processing indication information to obtain processed block chain information;
the processed blockchain information is output by the transmitter 604.
In one implementation, before the processor 601 receives the query request information through the receiver 603, the following operations may be further performed:
acquiring, by a receiver 603, regulatory information including a blockchain information identifier, processing instruction information, and a first digital signature;
verifying the first digital signature by using a first public key stored in advance;
when the verification is successful, issuing the supervision information to the blockchain network through the transmitter 604;
in one implementation, before the processor 601 verifies the first digital signature by using the first public key stored in advance, the following operations may be further performed:
obtaining, by the receiver 603, a created block, the created block including the first public key;
storing the first public key.
In one implementation, before the processor 601 verifies the first digital signature by using the first public key stored in advance, the following operations may be further performed:
obtaining public key information through a receiver 603, wherein the public key information comprises the first public key and a second digital signature;
verifying the second digital signature by using a pre-stored second public key;
issuing, by the transmitter 604, the first public key to the blockchain network when the verification is successful;
storing the first public key.
In one implementation, the processor 601, through the receiver 603, obtains public key information, including:
and acquiring the public key information through a first service interface.
In one implementation, the processor 601, through the receiver 603, obtains public key information, including:
installing a first intelligent contract;
and acquiring the public key information through a first intelligent contract interface.
In one implementation, the processor 601 obtains the supervision information through the receiver 603, including:
and acquiring the supervision information through a second service interface.
In one implementation, the processor 601 obtains the supervision information through the receiver 603, including:
installing a second intelligent contract;
and acquiring the supervision information through a second intelligent contract interface.
In one implementation, the processing indication information is used to indicate that the block chain information is masked;
the processor 601, according to the processing instruction information, processes the blockchain information corresponding to the blockchain information identifier to obtain processed blockchain information, including:
and shielding the block chain information to obtain the processed block chain information.
In one implementation, the processing indication information includes block chain modification information, and the processing indication information is used for indicating that the block chain information is modified;
the processor 601, according to the processing instruction information, processes the blockchain information corresponding to the blockchain information identifier to obtain processed blockchain information, including:
and modifying the block chain information according to the block chain modification information to obtain the processed block chain information.
Further, the processor 601 may further cooperate with the receiver 603 and the transmitter 604 to execute operations corresponding to the first node device in the embodiment shown in fig. 2, which may specifically refer to the description in the method embodiment and is not described herein again.
An embodiment of the present invention further provides a computer-readable storage medium, which can be used to store computer software instructions for the node device in the embodiment shown in fig. 6, and which contains a program designed for the node device in the foregoing embodiment.
The computer readable storage medium includes, but is not limited to, flash memory, hard disk, solid state disk.
An embodiment of the present invention further provides a computer program product, and when being executed by a computing device, the computer program product may execute the resource publishing method designed for the first node device in the foregoing embodiment of fig. 2.
In an embodiment of the present invention, there is further provided a chip including a processor and a memory, where the memory includes the processor and the memory, and the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, and the computer program is used to implement the method in the above method embodiment.
Those of ordinary skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (12)

1. A method for processing block chain information, comprising:
receiving query request information, wherein the query request information carries a block chain information identifier;
searching for supervision information containing the block chain information identifier, wherein the supervision information further comprises processing indication information, the supervision information is issued in a block chain network after any node in the block chain is successfully verified by using a first public key, the first public key is issued in the block chain network after any node in the block chain is successfully verified by using a second public key, the second public key is preset in a creation block by a block chain system builder, the first public key is transmitted in the block chain network through a first intelligent contract, and the supervision information is transmitted in the block chain network through the second intelligent contract;
processing the block chain information corresponding to the block chain information identifier according to the processing indication information to obtain processed block chain information;
and outputting the processed block chain information.
2. The method of claim 1, wherein before receiving the query request information, further comprising:
acquiring the supervision information, wherein the supervision information also comprises a first digital signature;
verifying the first digital signature by using a first public key stored in advance;
and when the verification is successful, issuing the supervision information to the blockchain network.
3. The method of claim 2, wherein before verifying the first digital signature using the pre-stored first public key, the method further comprises:
obtaining a created block, wherein the created block comprises the first public key;
storing the first public key.
4. The method of claim 2, wherein before verifying the first digital signature using the pre-stored first public key, the method further comprises:
acquiring public key information, wherein the public key information comprises the first public key and a second digital signature;
verifying the second digital signature by using a pre-stored second public key;
when the verification is successful, the first public key is issued to the block chain network;
storing the first public key.
5. The method of claim 4, wherein the obtaining public key information comprises:
and acquiring the public key information through a first service interface.
6. The method of claim 4, wherein the obtaining public key information comprises:
installing a first intelligent contract;
and acquiring the public key information through a first intelligent contract interface.
7. The method of claim 2, wherein the obtaining the regulatory information comprises:
and acquiring the supervision information through a second service interface.
8. The method of claim 2, wherein the obtaining the regulatory information comprises:
installing a second intelligent contract;
and acquiring the supervision information through a second intelligent contract interface.
9. The method according to claim 1, wherein the processing indication information is used to indicate that the block chain information is masked;
the processing the block chain information corresponding to the block chain information identifier according to the processing indication information to obtain processed block chain information includes:
and shielding the block chain information to obtain the processed block chain information.
10. The method according to claim 1, wherein the processing indication information includes block chain modification information, and the processing indication information is used for indicating that the block chain information is modified;
the processing the block chain information corresponding to the block chain information identifier according to the processing indication information to obtain processed block chain information includes:
and modifying the block chain information according to the block chain modification information to obtain the processed block chain information.
11. A device for processing blockchain information, comprising means for performing the method of any of claims 1 to 10.
12. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program comprising program instructions which, when executed by a processor, cause the processor to carry out the method according to any one of claims 1 to 10.
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