WO2020134712A1

WO2020134712A1 - Blockchain data processing method, device and system

Info

Publication number: WO2020134712A1
Application number: PCT/CN2019/119312
Authority: WO
Inventors: 栗志果
Original assignee: 阿里巴巴集团控股有限公司
Priority date: 2018-12-26
Filing date: 2019-11-19
Publication date: 2020-07-02
Also published as: CN113689213A; TWI724579B; CN110033261B; TW202025032A; CN113689213B; CN110033261A

Abstract

A blockchain data processing method, device and system, which are used to achieve the purpose of ensuring data security while using the blockchain technology. Said method comprises: acquiring a plurality of pieces of hash data corresponding to a plurality of pieces of service data recorded by blocks in a first blockchain (S102); performing, in a preset obfuscation and encryption processing manner, obfuscation and encryption processing on the plurality of pieces of hash data, so as to obtain at least one piece of obfuscated target hash data (S104); fragmenting said at least one piece of target hash data (S106); and storing the fragmented target hash data in a second blockchain, respectively (S108).

Description

Blockchain data processing method, device and system

Technical field

This specification relates to the field of data processing technology, and in particular, to a blockchain data processing method, device, and system.

Background technique

The data stored on the blockchain has the characteristics of true transparency and irremovability. Even if the plaintext is encrypted or hashed, the public can still parse the blockchain to obtain the real data on the blockchain, such as The actual calling level of the blockchain can be inferred from the magnitude of the hash to obtain real data. It can be seen that the existing way of storing data on the blockchain is not very safe for users, especially in the scenario where the blockchain is used to store transaction data, the transparency of transaction data will bring a certain degree of risk to users.

Summary of the invention

The purpose of one or more embodiments of this specification is to provide a blockchain data processing method, device, and system to achieve the purpose of ensuring data security while using blockchain technology.

To solve the above technical problems, one or more embodiments of this specification are implemented as follows:

On the one hand, one or more embodiments of this specification provide a blockchain data processing method, including:

Obtain multiple hash data corresponding to multiple business data recorded in the block in the first blockchain;

Performing obfuscation encryption processing on the multiple hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation;

Slicing the at least one target hash data;

Store the target hash data after fragmentation into the second blockchain.

In one embodiment, the performing obfuscation encryption processing on the multiple hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation includes:

Perform hash calculation on each of the hash data at least once to obtain the at least one target hash data.

In one embodiment, the target hash data contained in each segment corresponding to the segmentation process is not more than a predetermined number.

In one embodiment, the storing of the hashed target hash data into the second blockchain includes:

Storing the target hash data contained in each of the shards as a business record in the second blockchain.

In one embodiment, before acquiring multiple pieces of hash data corresponding to multiple pieces of business data recorded in the block in the first blockchain, the method further includes:

It is determined that the data viewing authority of the first blockchain is only visible to the first designated user group; and, the data viewing authority of the second blockchain is determined to be visible to all users.

In one embodiment, the method further includes:

Storing the obfuscated encryption processing method in the third blockchain; and, determining that the data viewing authority of the third blockchain is only visible to the second designated user group.

On the other hand, one or more embodiments of this specification provide a blockchain data processing device, including:

An obtaining module, configured to obtain multiple hash data corresponding to multiple business data recorded in the block in the first blockchain;

An obfuscation module, configured to perform obfuscation and encryption processing on the multiple hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation;

A sharding module, configured to perform sharding processing on the at least one target hash data;

The first storage module is used to store the fragmented target hash data into the second blockchain respectively.

In still another aspect, one or more embodiments of this specification provide a blockchain data processing system, including a first blockchain, a data processing node, and a second blockchain; wherein:

The first blockchain is used to record multiple hash data corresponding to multiple business data;

The data processing node is used to obtain the multiple hash data of the block records in the first block chain;

The data processing node is further configured to perform obfuscation encryption processing on the multiple hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation; and to the at least one target hash data Perform sharding; store the target hash data after sharding into the second blockchain;

The second blockchain is used to store the hashed target hash data.

In yet another aspect, one or more embodiments of this specification provide a blockchain data processing device, including:

Processor; and

A memory arranged to store computer-executable instructions, which when executed, causes the processor to:

Slicing the at least one target hash data;

Store the target hash data after fragmentation into the second blockchain.

In still another aspect, an embodiment of the present application provides a storage medium for storing computer-executable instructions, which when executed are implemented as follows:

Slicing the at least one target hash data;

Store the target hash data after fragmentation into the second blockchain.

Using the technical solution of one or more embodiments of this specification, multiple hash data corresponding to multiple business data recorded in the block in the first blockchain is obtained, and multiple hash data are processed according to the preset obfuscation encryption processing method. The hash data is obfuscated and encrypted to obtain at least one target hash data after obfuscation, and the at least one target hash data is fragmented, and then the fragmented target hash data is separately stored in the second block In the chain. It can be seen that the technical solution obfuscates multiple hash data corresponding to multiple business data, so that the final stored target hash data can be accessed by external users, but it is difficult for external users to analyze it to know the transaction size and transaction volume Level and other information. Therefore, while ensuring the true and transparent data in the blockchain, it can also ensure the security of the data, which is conducive to users to better protect their business when using the blockchain.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in one or more embodiments of this specification, the following will briefly introduce the drawings required in the description of the embodiments. Obviously, the drawings in the following description are only one of the description For some of the embodiments described in the multiple embodiments, for those of ordinary skill in the art, without paying any creative labor, other drawings can also be obtained based on these drawings.

FIG. 1 is a schematic flowchart of a blockchain data processing method according to an embodiment of the present specification;

2 is a schematic block diagram of a blockchain data processing device according to an embodiment of the present specification;

3 is a schematic block diagram of a blockchain data processing system according to an embodiment of this specification;

4 is a schematic block diagram of a blockchain data processing device according to an embodiment of the present specification.

detailed description

One or more embodiments of this specification provide a blockchain data processing method, device, and system to achieve the purpose of ensuring data security while using blockchain technology.

In order to enable those skilled in the art to better understand the technical solutions in one or more embodiments of this specification, the following will be combined with the drawings in one or more embodiments of this specification. The technical solution is described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of this specification, but not all the embodiments. Based on one or more embodiments of this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of one or more embodiments of this specification.

FIG. 1 is a schematic flowchart of a blockchain data processing method according to an embodiment of the present specification. As shown in FIG. 1, the method includes:

S102: Acquire multiple pieces of hash data corresponding to multiple pieces of business data recorded in the block in the first blockchain.

S104: Perform obfuscation encryption processing on multiple hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation.

S106: Perform fragmentation processing on at least one target hash data.

S108: Store the target hash data after fragmentation in the second blockchain.

In one embodiment, the multiple hash data corresponding to the multiple business data recorded in the block in the first blockchain is the ledger of the transaction recorded in the first blockchain. The ledger may be The nodes in the blockchain are accessible. The ledger is stored in the second blockchain after obfuscation and encryption processing, and the obfuscated and encrypted ledger stored in the second blockchain may be accessible to external users. Therefore, on the one hand, external users such as the public can access the ledger to ensure the authenticity and transparency of the data. On the other hand, since the external user obtains the obfuscated encrypted ledger, it is difficult to parse the obfuscated encrypted ledger. Obtaining relevant information about real transaction volume also guarantees the security of transaction information.

Therefore, the above technical solution obfuscates multiple hash data corresponding to multiple business data, so that the final stored target hash data can be accessed by external users, but it is difficult for external users to analyze it to know the transaction size and transaction Information such as magnitude. Therefore, while ensuring the true and transparent data in the blockchain, it can also ensure the security of the data, which is conducive to users to better protect their business when using the blockchain.

It should be understood that, in the embodiments of the present application, the obfuscation and encryption processing of hash data may include multiple manners.

Optionally, in an implementation manner, content composed of multiple hash data may be hashed to obtain one hash data.

For example, if the hash data corresponding to the 4 storage records in a block of the blockchain are HashA, HashB, HashC, and HashD, then the hash data after the encryption process is obfuscated HashABCD=Hash(HashA+HashB+HashC +HashD), where the function Hash() represents a hash calculation function, such as MD5, SHA-1, SHA-256, SHA-384, SHA-512, and so on. In the Bitcoin system, the hash algorithm used is SHA-256.

Optionally, in another implementation manner, the content of any one of the hash data may be divided into multiple parts and hash calculations may be separately performed to obtain multiple pieces of hash data corresponding to the content of the multiple parts.

For example, assuming that the hash data corresponding to a storage record in a block of the blockchain is HashA, HashA can be split into HashA1 and HashA2, and then hashed separately, that is, HashA1'=Hash(HashA1) , HashA2'=Hash(HashA2), HashA1' and HashA2' at this time are hash data obtained by obfuscating and encrypting HashA. Of course, you can also split HashA into 3 parts, 4 parts, or even more parts. How many parts you want to split and how to split them is configurable.

Optionally, in another implementation manner, the content composed of multiple hash data may be further divided into multiple parts of content, and the content of each part is separately hashed to obtain the multiple parts of Multiple hash data corresponding to the content.

For example, suppose that the hash data corresponding to the 4 storage records in a block of the blockchain are HashA, HashB, HashC, and HashD. The content of its composition is HashABCD=(HashA+HashB+HashC+HashD); HashABCD is divided into HashABCD1 and HashABCD2, and then hash calculation of HashABCD1 and HashABCD2 respectively to obtain Hash(HashABCD1) and Hash(HashABCD2), Hash(HashABCD1) and Hash(HashABCD2) are multiple hash corresponding to the content of the multiple parts data.

In addition, it should be understood that the obfuscation scheme of the embodiment of the present application may also perform multi-layer obfuscation encryption processing, that is, hash data after one layer of obfuscation encryption processing, and then one or more layers of obfuscation encryption processing. The algorithms for obfuscation and encryption in different layers can be the same or different.

For example, assuming that the hash data corresponding to the 4 storage records in a block of the blockchain are HashA, HashB, HashC, and HashD, the hash information after the first layer of obfuscation encryption processing is HashABCD=Hash(HashA+ HashB+HashC+HashD); the hash data after the second layer of obfuscation encryption processing is Hash(HashABCD1) and Hash(HashABCD2), where HashABCD=HashABCD1+HashABCD2.

Optionally, in another implementation manner, the hash data may be fragmented and/or hashed one or more times. Specifically, the hash data may only be fragmented to obtain the target hash data, or the fragmentation processing and hash calculation may be combined to obfuscate and encrypt the hash data to obtain the target hash data.

The following lists a detailed obfuscation encryption processing method.

First, perform fragmentation processing on the hash data according to the specified fragmentation rule to obtain multiple first data fragments.

Among them, the specified sharding rules include: the rules for sharding according to the specified data length; for example, if the specified data length is 64KB, then the hash data is divided according to the rule that each data fragment size is 64KB; or, according to the specified duration The rules for sharding; for example, if the specified duration is 1 second, then the sharding is performed according to the hash data stored in each second. For example, the hash data stored in the current 1 second is a piece of data, and the hash stored in the next 1 second Hope data is the next piece of data.

Secondly, hash calculation is performed on each first data segment to obtain multiple second data segments.

Finally, the obfuscated encrypted target hash data is determined according to multiple second data fragments. Specifically, the second data segment may be directly determined as the target hash data, and the second data segment may be fragmented and/or hashed one or more times again to finally obtain the target hash data.

In this embodiment, a confusion encryption processing method in which hash data is first fragmented and then hashed is calculated on the data fragments obtained after fragmentation. Obviously, due to the variety of obfuscation and encryption processing methods, the target hash data after the obfuscation and encryption processing is difficult to be known by external users, so the security of the target hash data can be ensured.

Of course, in addition to the above-mentioned methods of obfuscation encryption, a variety of other methods of obfuscation encryption can also be used to perform obfuscation encryption on hash data, including a combination of multiple fragmentation processing and multiple hash calculations, and The order of multiple fragmentation processing and multiple hash calculations is not limited. The more fragmentation processing and/or hash calculations, that is, the more complicated the obfuscation encryption processing method, the higher the security of the target hash data.

In one embodiment, before obtaining the hash data corresponding to the business data recorded in the first blockchain, it may be determined that the data viewing authority of the first blockchain is only visible to the first designated user group, such as only Visible to all nodes in the first blockchain; and, determine the data viewing authority of the second blockchain to be visible to all users, such as external users such as the public can access the data.

Wherein, the first designated user group may be one user or multiple users.

In this embodiment, since the first blockchain is only visible to the first designated user group and not visible to other external users, the multiple hash data corresponding to the multiple business data stored in the block in the first blockchain is very large It is difficult for external users to know, so as to ensure the security of multiple hash data corresponding to multiple business data; in addition, because the second blockchain is visible to all users, that is, all users can learn about the storage in the second blockchain Obfuscated encrypted target hash data, thus ensuring the transparency and authenticity of the data in the blockchain, and even if external users learn the obfuscated encrypted target hash data stored in the second blockchain, because the target is not known The hash data corresponds to the obfuscated encryption processing method, so it is impossible to obtain the real data of the business data, thereby ensuring the security of the business data, which is beneficial for users to better protect their business when using the blockchain.

In one embodiment, when the obfuscated and encrypted at least one target hash data is stored in the second blockchain, the obfuscated and encrypted at least one target hash data may be first fragmented, and then fragmented The target hash data is stored in the second blockchain.

In this embodiment, the target hash data contained in each shard corresponding to the sharding process is not more than a predetermined number, where the total length of the predetermined number of target hash data should not be greater than the second blockchain The maximum length of data recorded in the middle block. Therefore, when performing fragmentation processing on at least one target hash data after obfuscation and encryption, fragmentation can be performed in such a manner that each fragment contains a fixed number of target hash data, where the fixed number should not be greater than a predetermined number number.

In this embodiment, after fragmentation processing is performed on at least one target hash data after obfuscation and encryption, multiple fragments are obtained. Therefore, when the target hash data after fragmentation is stored in the second blockchain, the target hash data contained in each fragment can be stored in the second blockchain as a business record.

In one embodiment, the obfuscated encryption processing method may be stored in the third blockchain, and the data viewing authority of the third blockchain may be determined to be visible only to the second designated user group.

The second designated user group may be one user or multiple users. The second designated user group may be the same as or different from the first designated user group (ie, the user group visible to the first blockchain). The second designated user group may be workers related to the data stored in the first blockchain/second blockchain, such as the maintenance personnel of the blockchain, the user(s) may The hash data stored in the second blockchain is managed, such as storage, update, etc.; or, the user(s) can also manage the obfuscated encryption processing methods stored in the third blockchain, such as storage, Modify and other operations.

In this embodiment, the obfuscated encryption processing method is separately stored in the third blockchain, so that the second designated user group can easily learn the obfuscated encryption processing method, so as to obtain the real data of the business data by acquiring the obfuscated encryption processing method. Moreover, since the third blockchain is only visible to the second designated user group and not visible to other external users, it is difficult for external users to know the obfuscated encryption processing method stored in the third blockchain, so it is difficult to know the trueness of business data Data ensures the security of business data.

In one embodiment, the obfuscated encryption processing method can also be stored in the first blockchain. Since the first blockchain is only visible to the first designated user group and other external users are not visible, the first blockchain The stored obfuscated encryption processing method is difficult to be known by external users, so that it is difficult for external users to know the real data of the business data, ensuring the security of the business data.

In this embodiment, storing the obfuscation encryption processing method together with the hash data corresponding to the business data in the first area chain can not only ensure the security of the business data, but also save the occupation of the blockchain by the obfuscation encryption processing method.

In summary, specific embodiments of the subject matter have been described. Other embodiments are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve the desired results. Additionally, the processes depicted in the drawings do not necessarily require the particular order shown, or sequential order, to achieve the desired results. In certain embodiments, multitasking and parallel processing may be advantageous.

The above is the blockchain data processing method provided by one or more embodiments of this specification. Based on the same idea, one or more embodiments of this specification also provide a blockchain data processing device.

FIG. 2 is a schematic block diagram of a blockchain data processing device according to an embodiment of the present specification. As shown in FIG. 2, the blockchain data processing device 200 includes:

The obtaining module 210 is used to obtain multiple hash data corresponding to multiple business data recorded in the block in the first blockchain;

The obfuscation module 220 is configured to perform obfuscation encryption processing on multiple hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation;

A sharding module 230, configured to perform sharding processing on the at least one target hash data;

The first storage module 240 is used to store the fragmented target hash data in the second blockchain, respectively.

In one embodiment, the obfuscation module 220 includes:

The calculation unit is configured to perform hash calculation on each hash data at least once to obtain at least one target hash data.

In one embodiment, each fragment corresponding to the fragmentation process contains no more than a predetermined number of target hash data.

In one embodiment, the first storage module 240 includes:

The storage unit is used to store the target hash data contained in each shard as a business record in the second blockchain.

In one embodiment, the apparatus 200 further includes:

The first determining module is used to determine the data viewing authority of the first blockchain to only the first designated user before acquiring the multiple hash data corresponding to the multiple business data recorded in the block in the first blockchain The group is visible; and, the data viewing authority of the second blockchain is determined to be visible to all users.

In one embodiment, the apparatus 200 further includes:

A storage and determination module for storing the obfuscated encryption processing method in the third blockchain; and, determining that the data viewing authority of the third blockchain is only visible to the second designated user group.

Using the device of one or more embodiments of this specification, by acquiring multiple hash data corresponding to multiple business data recorded in a block in the first blockchain, and processing multiple hash data according to a preset obfuscation encryption processing method It is hoped that the data is obfuscated and encrypted to obtain at least one target hash data after obfuscation, and the at least one target hash data is fragmented, and then the fragmented target hash data is separately stored in the second blockchain in. It can be seen that this technical solution obfuscates multiple hash data corresponding to multiple business data, so that the final stored target hash data can be accessed by external users, but it is difficult for external users to analyze it to know the transaction size and transaction volume Level and other information. Therefore, while ensuring the transparency of the data in the blockchain, it can also ensure the security of the data, which is conducive to users to better protect their business when using the blockchain.

Those skilled in the art should understand that the above-mentioned blockchain data processing device can be used to implement the aforementioned blockchain data processing method, and the detailed description thereof should be similar to the aforementioned method part description. Elaborate.

Based on the same idea, one or more embodiments of this specification also provide a blockchain data processing system.

3 is a schematic block diagram of a blockchain data processing system according to an embodiment of the present specification. As shown in FIG. 3, the blockchain data processing system 300 includes a first blockchain 310, a data processing node 320, and a third Two blockchain 330; Among them:

The first blockchain 310 is used to record multiple hash data corresponding to multiple business data;

The data processing node 320 is used to obtain multiple hash data of block records in the first blockchain 310;

The data processing node 320 is further configured to perform obfuscation encryption processing on multiple hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation; perform fragmentation processing on at least one target hash data; Store the target hash data after fragmentation into the second blockchain 330 respectively;

The second blockchain 330 is used to store the fragmented target hash data.

In one embodiment, the data processing node 320 is also used to:

Perform hash calculation on each hash data at least once to obtain at least one target hash data.

In one embodiment, the data processing node 320 is also used to:

In one embodiment, the system 300 further includes:

The third blockchain is used to store obfuscation and encryption processing methods;

Correspondingly, the data processing node 320 is also used to determine that the third blockchain data viewing authority is only visible to the second designated user group.

Using the system of one or more embodiments of this specification, multiple hash data corresponding to multiple business data recorded in the block in the first blockchain is acquired, and multiple hash data are processed according to the preset obfuscation encryption processing method. It is hoped that the data is obfuscated and encrypted to obtain at least one target hash data after obfuscation, and the at least one target hash data is fragmented, and then the fragmented target hash data is separately stored in the second blockchain in. It can be seen that the technical solution obfuscates multiple hash data corresponding to multiple business data, so that the final stored target hash data can be accessed by external users, but it is difficult for external users to analyze it to know the transaction size and transaction volume Level and other information. Therefore, while ensuring the transparency of the data in the blockchain, it can also ensure the security of the data, which is conducive to users to better protect their business when using the blockchain.

Those skilled in the art should understand that the above-mentioned blockchain data processing system can be used to implement the aforementioned blockchain data processing method, and the detailed description thereof should be similar to the aforementioned method part description. Elaborate.

Based on the same idea, one or more embodiments of this specification also provide a blockchain data processing device, as shown in FIG. 4. Blockchain data processing equipment may have relatively large differences due to different configurations or performances, and may include one or more processors 401 and memory 402, and one or more storage applications or data may be stored in the memory 402. Among them, the memory 402 may be short-term storage or persistent storage. The application program stored in the memory 402 may include one or more modules (not shown), and each module may include a series of computer-executable instructions in the blockchain data processing device. Furthermore, the processor 401 may be configured to communicate with the memory 402 and execute a series of computer-executable instructions in the memory 402 on the blockchain data processing device. The blockchain data processing device may also include one or more power supplies 403, one or more wired or wireless network interfaces 404, one or more input/output interfaces 405, and one or more keyboards 406.

Specifically in this embodiment, the blockchain data processing device includes a memory and one or more programs, where one or more programs are stored in the memory, and one or more programs may include one or more modules, And each module may include a series of computer-executable instructions to the blockchain data processing device, and is configured to be executed by one or more processors. The one or more programs include the following computer-executable instructions:

Slicing the at least one target hash data;

Store the target hash data after fragmentation into the second blockchain respectively.

Optionally, when the computer-executable instructions are executed, the processor may also:

Optionally, the target hash data contained in each fragment corresponding to the fragment processing is not more than a predetermined number. Optionally, when the computer-executable instructions are executed, the processor may also:

The target hash data contained in each of the fragments is stored in the second block chain as a business record.

Before acquiring multiple hash data corresponding to multiple business data recorded in the block in the first blockchain, determine that the data viewing authority of the first blockchain is only visible to the first designated user group; and, It is determined that the data viewing authority of the second blockchain is visible to all users.

One or more embodiments of this specification also propose a computer-readable storage medium that stores one or more programs, the one or more programs include instructions, and the instructions include multiple application programs When an electronic device of the

The system, device, module or unit explained in the above embodiments may be specifically implemented by a computer chip or entity, or implemented by a product having a certain function. A typical implementation device is a computer. Specifically, the computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or A combination of any of these devices.

For the convenience of description, when describing the above device, the functions are divided into various units and described separately. Of course, when implementing one or more embodiments of this specification, the functions of each unit may be implemented in the same or more software and/or hardware.

Those skilled in the art should understand that one or more embodiments of this specification may be provided as a method, system, or computer program product. Therefore, one or more embodiments of this specification may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, one or more embodiments of this specification may employ computer programs implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code The form of the product.

One or more embodiments of this specification are described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present application. It should be understood that each flow and/or block in the flowchart and/or block diagram and a combination of the flow and/or block in the flowchart and/or block diagram may be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, special-purpose computer, embedded processing machine, or other programmable data processing device to produce a machine that enables the generation of instructions executed by the processor of the computer or other programmable data processing device A device for realizing the functions specified in one block or multiple blocks of one flow or multiple flows of a flowchart and/or one block or multiple blocks of a block diagram.

These computer program instructions may also be stored in a computer readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, the instructions The device implements the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and/or block diagrams.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operating steps are performed on the computer or other programmable device to produce computer-implemented processing, which is executed on the computer or other programmable device The instructions provide steps for implementing the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and/or block diagrams.

In a typical configuration, the computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include non-permanent memory, random access memory (RAM) and/or non-volatile memory in a computer-readable medium, such as read only memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.

Computer readable media, including permanent and non-permanent, removable and non-removable media, can store information by any method or technology. The information may be computer readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, read-only compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, Magnetic tape cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. As defined in this article, computer-readable media does not include temporary computer-readable media (transitory media), such as modulated data signals and carrier waves.

It should also be noted that the terms "include", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device that includes a series of elements not only includes those elements, but also includes Other elements not explicitly listed, or include elements inherent to such processes, methods, goods, or equipment. Without more restrictions, the element defined by the sentence "include one..." does not exclude that there are other identical elements in the process, method, commodity or equipment that includes the element.

One or more embodiments of this specification may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present application may also be practiced in distributed computing environments in which remote processing devices connected through a communication network perform tasks. In a distributed computing environment, program modules may be located in local and remote computer storage media including storage devices.

The embodiments in this specification are described in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method embodiment.

The above is only one or more embodiments of this specification and is not intended to limit this specification. For those skilled in the art, various modifications and changes can be made to one or more embodiments of this specification. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification should be included in the scope of claims of one or more embodiments of this specification.

Claims

A blockchain data processing method, including:

Obtain multiple hash data corresponding to multiple business data recorded in the block in the first blockchain;

Performing obfuscation encryption processing on the multiple hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation;

Slicing the at least one target hash data;

Store the target hash data after fragmentation into the second blockchain.
According to the method of claim 1, performing obfuscation encryption processing on the plurality of hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation includes:

Perform hash calculation on each of the hash data at least once to obtain the at least one target hash data.
According to the method of claim 2, the target hash data contained in each fragment corresponding to the fragmentation processing is not more than a predetermined number.
According to the method of claim 3, storing the target hash data after fragmentation into the second blockchain includes:

Storing the target hash data contained in each of the shards as a business record in the second blockchain.
The method according to claim 1, before acquiring multiple pieces of hash data corresponding to multiple pieces of business data recorded in the block in the first blockchain, further comprising:

It is determined that the data viewing authority of the first blockchain is only visible to the first designated user group; and, the data viewing authority of the second blockchain is determined to be visible to all users.
The method of claim 1, further comprising:

Storing the obfuscated encryption processing method in the third blockchain; and, determining that the data viewing authority of the third blockchain is only visible to the second designated user group.
A blockchain data processing device, including:

An obtaining module, configured to obtain multiple hash data corresponding to multiple business data recorded in the block in the first blockchain;

An obfuscation module, configured to perform obfuscation and encryption processing on the multiple hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation;

A sharding module, configured to perform sharding processing on the at least one target hash data;

The first storage module is used to store the fragmented target hash data into the second blockchain respectively.
A blockchain data processing system includes a first blockchain, a data processing node, and a second blockchain; where:

The first blockchain is used to record multiple hash data corresponding to multiple business data;

The data processing node is used to obtain the multiple hash data of the block records in the first block chain;

The data processing node is further configured to perform obfuscation encryption processing on the multiple hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation; and to the at least one target hash data Perform sharding; store the target hash data after sharding into the second blockchain;

The second blockchain is used to store the hashed target hash data.
A blockchain data processing device, including:

Processor; and

A memory arranged to store computer-executable instructions, which when executed, causes the processor to:

Obtain multiple hash data corresponding to multiple business data recorded in the block in the first blockchain;

Performing obfuscation encryption processing on the multiple hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation;

Slicing the at least one target hash data;

Store the target hash data after fragmentation into the second blockchain.
A storage medium is used to store computer-executable instructions, and the executable instructions, when executed, implement the following process:

Obtain multiple hash data corresponding to multiple business data recorded in the block in the first blockchain;

Performing obfuscation encryption processing on the multiple hash data according to a preset obfuscation encryption processing method to obtain at least one target hash data after obfuscation;

Slicing the at least one target hash data;

Store the target hash data after fragmentation into the second blockchain.