CN106372533B - Content storage method based on block chain technology - Google Patents
Content storage method based on block chain technology Download PDFInfo
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- CN106372533B CN106372533B CN201610823156.9A CN201610823156A CN106372533B CN 106372533 B CN106372533 B CN 106372533B CN 201610823156 A CN201610823156 A CN 201610823156A CN 106372533 B CN106372533 B CN 106372533B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
- G06F21/6227—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database where protection concerns the structure of data, e.g. records, types, queries
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/062—Securing storage systems
- G06F3/0623—Securing storage systems in relation to content
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0629—Configuration or reconfiguration of storage systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
Abstract
The invention relates to a content storage method based on a block chain technology, which comprises the following steps: establishing a private block chain network; dividing the content into a plurality of data blocks, and respectively storing the data blocks on corresponding nodes of the private block chain network; calculating the data blocks stored on each node to form at least one feature; at least one feature is anchored into the public blockchain network. The storage method can be implemented at low cost, and the security and reliability of the content or data can be further improved.
Description
Technical Field
The invention relates to the technical field of data storage.
Background
In the prior art, content storage and verification are generally implemented by using a database technology. However, there are significant limitations to either traditional relational or non-relational databases or existing distributed databases.
First, databases are centralized, and even distributed databases suffer from "centralized" problems, which results in that once the center is breached, all of the content stored in the database is no longer secure and, in many cases, even irretrievable.
Secondly, the storage mode of the database makes the content change very easy, and the stored content can be tampered as long as the management authority of the database is possessed, and even can be undiscovered.
Again, the maintenance of the database is performed by a group of specialized database maintenance personnel. Incorporated into the actual application, the maintainer of the database must also be very familiar with the business, which equates to a risk to a small number of maintainers.
Finally, in order to ensure high security and high availability of data of an enterprise, an enterprise often establishes a plurality of remote centers and synchronizes in real time by adopting a database synchronous backup mode, which greatly increases operation and maintenance costs.
Therefore, those skilled in the art are always expecting a content storage mode which is more secure and reliable and is low in implementation cost.
On the other hand, the blockchain is an account book data storage method, and is an addable general ledger database which exists in a peer-to-peer network in the form of multiple copies. The method has the characteristics of collective maintenance, decentralization, trust consensus mechanism, data non-tampering and the like.
In the aspect of data storage, the block chain adopts a chain type account book structure, and compared with a traditional two-dimensional database table structure, the block chain packs a certain amount of data records into data blocks, and then links the data blocks through summary information, so that the change of the database can be rapidly discriminated through a mathematical algorithm, and the data information can be effectively prevented from being tampered. On the network level, a P2P networking mode is adopted for a block chain, five to thousands of different service nodes capable of independently bearing service flow and data storage are provided according to different service types, and compared with the most mature two-place-three-center architecture in the traditional disaster recovery network structure, more nodes participate in the building of a core network and the storage of account book data, and the availability and reliability of the system are improved.
In addition, the block chain adopts a Hash algorithm and various symmetric and asymmetric encryption algorithms, so that identity management and access control can be performed on the nodes, the non-repudiation characteristics of accounting behaviors and data contents are ensured, and confidentiality of account information and accounting data is protected.
Disclosure of Invention
The invention aims to provide a content storage mode which is combined with a block chain technology, is safer and more reliable and has low implementation cost.
In order to achieve the above purpose, the invention provides a technical scheme as follows:
a content storage method based on block chain technology comprises the following steps: a) establishing a private block chain network; b) dividing the content into a plurality of data blocks, and respectively storing the data blocks on corresponding nodes of the private block chain network; c) calculating the data blocks stored on each node to form at least one characteristic; d) anchoring at least one feature into a public blockchain network.
Preferably, step a) comprises: the number of nodes of the private blockchain network is determined according to the size of the user traffic and/or the amount of content.
Preferably, step a) further comprises: determining which nodes in the private blockchain network need to be identified; a workload proof consensus algorithm is employed to establish and/or optimize a private blockchain network.
Preferably, step d) specifically comprises: periodically anchoring at least one feature into the public blockchain network.
Preferably, it further comprises step e): and combining the data blocks stored on each node of the private block chain network with corresponding features anchored in the public block chain network, and verifying each data block respectively.
Preferably, it further comprises step f): and after the data blocks stored on each node based on the private block chain network pass verification respectively, adding nodes to the private block chain network.
Compared with the existing data storage mode based on a database, the content storage method provided by the invention can introduce the characteristics of decentralization, a trust consensus mechanism, data non-falsification and the like, so that the data or the content is safer and more reliable. Furthermore, by combining a private blockchain network, a public blockchain network, the storage method can be implemented at low cost; by verifying the data or the content through the combination, the security of the content or the data can be further improved.
Drawings
Fig. 1 is a flowchart illustrating a content storage method based on a blockchain technique according to an embodiment of the present invention.
Fig. 2 illustrates a flowchart of a content storage method based on a blockchain technique according to another embodiment of the present invention.
Detailed Description
As shown in fig. 1, a first embodiment of the present invention provides a content storage method based on a block chain technique, which includes the following steps:
step S10, a private blockchain network is established.
Specifically, first, the size of the private blockchain network or the number of nodes thereof may be determined according to the size of the user traffic and/or the amount of content to be stored.
Preferably, in this step, it is also determined which nodes in the private blockchain network need to be identified together; and employing a proof of work (POW) consensus algorithm to establish and/or optimize a private blockchain network.
It will be appreciated that in order for these nodes to agree, a node consensus algorithm needs to be designed to facilitate the selection of the accounting (storage) node and to agree on the legitimacy and validity of each data block. The user can define the consensus algorithm according to the service logic thereof, and the number of the nodes is optimally controlled to be 5-8.
In addition, the number of nodes may be modified or optimized according to different block chain techniques.
And step S11, dividing the content into a plurality of data blocks, and storing the data blocks on corresponding nodes of the private block chain network respectively.
Specifically, after the data blocks are stored on the corresponding nodes, the data blocks can be linked with each other through the summary information, and the data blocks and the link relation among the data blocks jointly form the content to be stored, so that any change of the content can be quickly discriminated.
Step S12, calculating the data blocks stored on each node to form at least one feature.
In this step, each data block in the private blockchain network may be calculated according to a certain algorithm (e.g., a merkel hash algorithm), so as to obtain one or a group of characteristics, such as a hash value or other data statistical characteristics. The features may correspond to the data blocks one to one, such that the one feature may reflect characteristics of the corresponding data block; alternatively, a single feature may be formed based on multiple blocks of data, thereby enabling the feature to characterize the characteristics of the stored content.
And step S13, anchoring the at least one characteristic to the public block chain network.
Specifically, the one or more characteristics calculated in step S12 may be anchored to a public blockchain (e.g., bitcoin public blockchain, etherhouse public blockchain, etc.) network, so that the fairness of the public blockchain network may be utilized to verify the validity and validity of each data block in the private blockchain network.
Preferably, the features can be anchored to the public blockchain network periodically at a certain frequency to facilitate the updating and security of data or content.
For example, if a ticket service performs ticket storage and validation, the ticket service system can set the mechanism for anchoring based on the volume of the ticket, such as setting a public chain anchor every 10 ten thousand tickets. Then, a timing task may be set in the service system, and when the number of tickets increases to 10 ten thousand, the 10 ten thousand pieces of data are packaged and stored in the private blockchain network, and meanwhile, the mercker tree calculation is performed according to the hash value of each record, and finally, a root value (root of the mercker tree) is calculated, and the root value is sent to the public blockchain network for recording.
The content storage method is realized based on the block chain technology, and compared with the existing data storage mode based on a database, the content storage method can ensure that data or content is safer and more reliable. In addition, the block chain technology is utilized, and the data can be conveniently stored, inquired and verified without setting a large database, so that the implementation and maintenance cost is low, and the method is favorable for popularization and application in the industry.
As shown in fig. 2, a second embodiment of the present invention provides another content storage method based on the block chain technique, which can be improved on the basis of the first embodiment.
Specifically, it comprises: step S10, establishing a private block chain network; step S11, dividing the content into multiple data blocks, and storing the data blocks in corresponding nodes of the private block chain network; step S12, calculating the data blocks stored on each node to form at least one characteristic; and step S13, anchoring the at least one characteristic to the public block chain network.
Unlike the first embodiment described above, it further includes step S14: and combining the data blocks stored on each node of the private block chain network with corresponding features anchored in the public block chain network, and verifying each data block respectively. This verification may be performed at the direction of the user or may be performed periodically.
After the verification, high availability and high reliability of the stored content can be ensured.
As a preferred implementation of the second embodiment, after step S14, the following steps may be further performed: and after the data blocks stored on each node based on the private block chain network pass the verification respectively, adding nodes to the private block chain network. The added new node can be used for storing a new data block, so that the updating or the expansion of the content is realized.
Compared with the first embodiment, the second embodiment is further beneficial to providing public trust for the data blocks stored on each node of the private blockchain network, and a trusted new node can be further added to update or expand the stored content.
It is to be appreciated that when combined with a particular application scenario, multiple Application Program Interfaces (APIs) can be defined and implemented.
The API is a bridge between the user service system and the private block chain, and is also a bridge between the private block chain and the public block chain. Through the calling of the API, a developer of a business system can quickly and conveniently use the block chain technology to realize the storage, the retrieval and the verification of the content without learning the block chain technology. In order to accommodate most scenarios of content storage and verification, six types of API interfaces may be proposed.
1) And a content storage API. The service system can rapidly save the content to be stored in the private blockchain network by calling the interface.
2) And a content query API. The service system can quickly retrieve the content stored in the private blockchain network by calling the interface.
3) And public chain anchoring parameter setting API. As described above, the function of public chain anchoring is added to ensure the fairness of the private blockchain network. The parameter setting of the public link anchor is called by the service system, for example, the service system may set the frequency of anchoring the public link according to the service rule and requirement, such as anchoring once every 100 pieces of content or anchoring once every 72 hours, or according to the user instruction. And appropriate anchoring parameters are set, so that the cost of using the public chain can be saved, and the safety of the content can be ensured.
4) And public chain anchoring parameter query API. Corresponding to the setting of the public chain anchoring parameters, the business system can inquire the set public chain anchoring parameters at any time. With the change of the service function or requirement, the anchor parameter that has been set may be modified, and at this time, the parameter needs to be queried through the interface and then the parameter setting API is called to modify the parameter.
5) And the public chain anchoring result query API. After the service system sets the public chain anchoring parameters, the private block chain can regularly anchor content to the public chain according to rules and set algorithms when conditions are met, and the service system can query the result of anchoring to the public chain within a certain time period according to the anchoring parameter configuration.
6) And verifying the public chain anchoring result API. When a new node needs to be added to the private blockchain network, the newly added node must verify the fairness of the entire private blockchain network for security reasons to prevent fraud by the entire private blockchain. Specifically, the newly added node may randomly synchronize some content in the private blockchain network, then obtain the hash value anchored to the public blockchain through the interface, and then verify the correctness of the hash value through the set anchoring rule and algorithm.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Various modifications may be made by those skilled in the art without departing from the spirit of the invention and the appended claims.
Claims (6)
1. A content storage method based on block chain technology comprises the following steps:
a) establishing a private block chain network;
b) dividing the content into a plurality of data blocks, and respectively storing the data blocks on corresponding nodes of the private block chain network, so that the data blocks are mutually linked through summary information and jointly form the content;
c) calculating the data blocks stored on each node to form at least one characteristic;
d) anchoring the at least one feature into a public blockchain network; and
e) and adding nodes to the private blockchain network based on the data blocks stored on the nodes of the private blockchain network passing verification respectively.
2. The method of claim 1, wherein step a) comprises:
determining the number of nodes of the private blockchain network according to the user service scale and/or the content amount.
3. The method of claim 2, wherein step a) further comprises:
determining which nodes in the private blockchain network need to be identified;
employing a workload attestation consensus algorithm to establish and/or optimize the private blockchain network.
4. The method of claim 1, wherein the characteristic is a hash value.
5. The method according to claim 1, wherein said step d) comprises in particular:
periodically anchoring the at least one feature into the public blockchain network.
6. The method according to any one of claims 1 to 5, characterized in that it further comprises a step f):
and combining the data blocks stored on each node of the private blockchain network with corresponding features anchored in the public blockchain network, and verifying each data block respectively.
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