CN110289060A - A kind of personal medical data storage method under the chain based on random Merkle tree - Google Patents
A kind of personal medical data storage method under the chain based on random Merkle tree Download PDFInfo
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- CN110289060A CN110289060A CN201910535720.0A CN201910535720A CN110289060A CN 110289060 A CN110289060 A CN 110289060A CN 201910535720 A CN201910535720 A CN 201910535720A CN 110289060 A CN110289060 A CN 110289060A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
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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
- G06F21/602—Providing cryptographic facilities or services
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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
- G06F21/6245—Protecting personal data, e.g. for financial or medical purposes
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H10/00—ICT specially adapted for the handling or processing of patient-related medical or healthcare data
- G16H10/60—ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
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Abstract
The present invention discloses a kind of personal medical data storage method under the chain based on random Merkle tree, the random piecemeal of data of storage, then the data block randomly ordered to its establishes a Merkle tree, only Merkle tree root Hash can be stored on block chain, and randomly ordered data block will store under chain, the sequence of data block is encrypted by the public key of data owner and is stored on block chain, data owner itself is decrypted sequence ciphertext using the private key of their own, then acquisition initial data is reconstructed to randomly ordered data block according to the former sequence that decryption obtains, ensure that initial data will not be revealed in data storage procedure under chain.The present invention uses block chain using distributed storage, Merkle tree, random data block sequencing to solve the scalability problem of block chain, while can guarantee that data can not be distorted and be can verify that in fly-by-night network environment.
Description
Technical field
The present invention relates to personal under medical data secure storage field more particularly to a kind of chain based on random Merkle tree
Medical data storage method.
Background technique
Currently, people often go to a doctor in multiple hospitals, but the Personal medical data between multiple hospitals is not
It mutually circulates, this all causes a degree of trouble for the health of diagnosis, medical institutions or individual.It there is now base
In a series of data sharing proposition solutions of the block catenary system for Personal medical data between each medical institutions, but that
A little methods have been unable to meet the rapid growth of current medical data, and Personal medical data amount is huge, and current block catenary system
Mostly be all it is non-expandable, cause performance with data increase and decline.
Summary of the invention
The purpose of the present invention is to provide a kind of medical data storage methods personal under chain based on random Merkle tree.
The technical solution adopted by the present invention is that:
A kind of personal medical data storage method under the chain based on random Merkle tree comprising data storage section and data are asked
Part is asked,
Specific step is as follows for data storage:
Step 1-1 obtains the medical data that data owner is transmitted to block catenary system,
The random piecemeal of medical data is formed several data blocks by step 1-2, and data block is randomly ordered,
Step 1-3 establishes a Merkle tree to randomly ordered data block,
Merkle tree root Hash is stored on block chain by step 1-4,
Step 1-5 carries out encryption generation to the sequence of data block using the public key of data requester and contains the close of block sequencing
Text,
Step 1-6, will be in randomly ordered data block storage to the trusted node of block chain；
Step 1-7, Merkle root cryptographic Hash, ciphertext and the nodal information of storage are generated block, and there are on block chain；
Specific step is as follows for request of data:
Step 2-1, data requester find data record to be used using intelligent contract；
Step 2-2 judges whether data requester is data owner；It is then, to execute step 2-3；Otherwise, intelligent conjunction is first passed through
Step 2-3 is executed after about being authorized again；
Step 2-3, intelligent contract find data record to be used and corresponding randomly ordered by obtaining from the node of storage
Data block；
Sequence ciphertext is decrypted in the private key of step 2-4, intelligent contract data requester, suitable based on the data block after decryption
The randomly ordered data block of ordered pair is reconstructed to obtain workable data；
Step 2-5 gives workable Data Concurrent to data requester.
Further, data owner is personal or hospital institution in step 1-1.
Further, trusted node is personal data center or credible medical institutions in step 1-7.
Further, data record to be used is that certain data records or personal data record in step 2-1.
Further, the data obtained in step 2-3 using the Merkle root cryptographic Hash verifying in data record to be used
Whether block is modified.
Further, being obtained in step 2-4 using the Merkle root cryptographic Hash verifying reconstruct in data record to be used can
The integrality of the data used.
The invention adopts the above technical scheme, proposes storage method under safe chain, greatly improves depositing for block chain
It stores up performance and provides the reliable shared of Personal medical data on the whole.The present invention using distributed storage, Merkle tree, with
Machine block sequencing uses block chain to solve (storage) scalability problem of block chain, while can guarantee fly-by-night
Data can not be distorted and be can verify that in network environment.
Detailed description of the invention
The present invention is described in further details below in conjunction with the drawings and specific embodiments；
Fig. 1 is the flow diagram of personal medical data storage method under a kind of chain based on random Merkle tree of the present invention.
Specific embodiment
As shown in Figure 1, the invention discloses a kind of medical data storage method personal under chain based on random Merkle tree,
It includes data storage section and data-request parts,
Specific step is as follows for data storage:
Step 1-1 obtains the medical data that data owner is transmitted to block catenary system,
The random piecemeal of medical data is formed several data blocks by step 1-2, and data block is randomly ordered；Step 1-3, to
The data block of machine sequence establishes a Merkle tree,
Merkle tree root Hash is stored on block chain by step 1-4,
Step 1-5 carries out encryption generation to the sequence of data block using the public key of data requester and contains the close of block sequencing
Text,
Step 1-6, will be in randomly ordered data block storage to the trusted node of block chain；Storage reduces area under the chain of data block
The storage of block chain main chain relies on, and improves block catenary system overall performance.And piecemeal store Personal medical data realize safety altogether
It enjoys, storage Central Plains data will not be revealed.
Step 1-7, Merkle root cryptographic Hash, ciphertext and the nodal information of storage are generated block, and there are on block chain；
Specific step is as follows for request of data:
Step 2-1, data requester find data record to be used using intelligent contract；
Step 2-2 judges whether data requester is data owner；It is then, to execute step 2-3；Otherwise, intelligent conjunction is first passed through
Step 2-3 is executed after about being authorized again；
Step 2-3, intelligent contract find data record to be used and corresponding randomly ordered by obtaining from the node of storage
Data block；
Sequence ciphertext is decrypted in the private key of step 2-4, intelligent contract data requester, suitable based on the data block after decryption
The randomly ordered data block of ordered pair is reconstructed to obtain workable data；
Step 2-5 gives workable Data Concurrent to data requester.
Further, data owner is personal or hospital institution in step 1-1.
Further, trusted node is personal data center or credible medical institutions in step 1-7.
Further, data record to be used is that certain data records or personal data record in step 2-1.
Further, the data obtained in step 2-3 using the Merkle root cryptographic Hash verifying in data record to be used
Whether block is modified.
Further, being obtained in step 2-4 using the Merkle root cryptographic Hash verifying reconstruct in data record to be used can
The integrality of the data used.
The present invention is basic storing framework using Merkle tree, and the basic skills of random Merkle tree is the data storage
Random piecemeal, then the data block randomly ordered to its establishes a Merkle tree, and only Merkle tree root Hash can be stored in
On block chain, and randomly ordered data block will store under chain, if as soon as a data record is randomly divided into n block, then there is n!
The total data block sequencing of index magnitude ensure that the safety of data in big degree.The sequence of data block will be gathered around by data
The public key for the person of having is encrypted and is stored on block chain, only has data owner itself using the private key pair of their own in this way
Sequence ciphertext is decrypted, and acquisition original number then is reconstructed to randomly ordered data block according to the former sequence that decryption obtains
According to, it is ensured that initial data (original text) will not be revealed in data storage procedure under chain.
Since data storage of the invention is carried out in distributed trustless network environment, the present invention is selected
Merkle tree is so that data have the characteristics that verifiability.Data are divided into after several data blocks, and data block can store respectively
In different nodes in a network, data block can be obtained from different network nodes, by calculating Merkle tree Hash not only
The data being finally synthesizing can be verified, can also verify whether its data block for being distributed in each node is modified.
The present invention uses block chain using distributed storage, Merkle tree, random data block sequencing to solve block chain
(storage) scalability problem, while can guarantee that data can not be distorted and be can verify that in fly-by-night network environment.
Claims (6)
1. a kind of personal medical data storage method under chain based on random Merkle tree, it is characterised in that: it includes that data are deposited
Storage part and data-request parts,
Specific step is as follows for data storage:
Step 1-1 obtains the medical data that data owner is transmitted to block catenary system,
The random piecemeal of medical data is formed several data blocks by step 1-2, and data block is randomly ordered,
Step 1-3 establishes a Merkle tree to randomly ordered data block,
Merkle tree root Hash is stored on block chain by step 1-4,
Step 1-5 carries out encryption generation to the sequence of data block using the public key of data requester and contains the close of block sequencing
Text,
Step 1-6, will be in randomly ordered data block storage to the trusted node of block chain；
Step 1-7, Merkle root cryptographic Hash, ciphertext and the nodal information of storage are generated block, and there are on block chain；
Specific step is as follows for request of data:
Step 2-1, data requester find data record to be used using intelligent contract；
Step 2-2 judges whether data requester is data owner；It is then, to execute step 2-3；Otherwise, intelligent conjunction is first passed through
Step 2-3 is executed after about being authorized again；
Step 2-3, intelligent contract find data record to be used and corresponding randomly ordered by obtaining from the node of storage
Data block；
Sequence ciphertext is decrypted in the private key of step 2-4, intelligent contract data requester, suitable based on the data block after decryption
The randomly ordered data block of ordered pair is reconstructed to obtain workable data；
Step 2-5 gives workable Data Concurrent to data requester.
2. personal medical data storage method, special under a kind of chain based on random Merkle tree according to claim 1
Sign is: data owner is personal or hospital institution in step 1-1.
3. personal medical data storage method, special under a kind of chain based on random Merkle tree according to claim 1
Sign is: trusted node is personal data center or credible medical institutions in step 1-7.
4. personal medical data storage method, special under a kind of chain based on random Merkle tree according to claim 1
Sign is: data record to be used is that certain data records or personal data record in step 2-1.
5. personal medical data storage method, special under a kind of chain based on random Merkle tree according to claim 1
Sign is: whether the data block obtained in step 2-3 using the Merkle root cryptographic Hash verifying in data record to be used is by more
Change.
6. personal medical data storage method, special under a kind of chain based on random Merkle tree according to claim 1
Sign is: obtaining workable data using the Merkle root cryptographic Hash verifying reconstruct in data record to be used in step 2-4
Integrality.
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Cited By (6)
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|---|---|---|---|---|
| CN110647503A (en) * | 2019-10-09 | 2020-01-03 | 重庆特斯联智慧科技股份有限公司 | Distributed storage method and device |
| CN111599425A (en) * | 2020-04-27 | 2020-08-28 | 合肥工业大学 | Block chain-oriented node dynamic hierarchical electronic medical record storage method and device |
| CN111597567A (en) * | 2020-05-14 | 2020-08-28 | 腾讯科技（深圳）有限公司 | Data processing method, data processing device, node equipment and storage medium |
| CN112951357A (en) * | 2021-03-23 | 2021-06-11 | 电子科技大学 | Block chain-based virtual medical resource transverse expansion method |
| WO2022068362A1 (en) * | 2020-09-29 | 2022-04-07 | 深圳壹账通智能科技有限公司 | Block chain-based information processing method and apparatus, device, and medium |
| CN114553436A (en) * | 2022-02-23 | 2022-05-27 | 山东省计算中心（国家超级计算济南中心） | Data security sharing and privacy protection method and system for intelligent medical engineering |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110647503A (en) * | 2019-10-09 | 2020-01-03 | 重庆特斯联智慧科技股份有限公司 | Distributed storage method and device |
| CN111599425A (en) * | 2020-04-27 | 2020-08-28 | 合肥工业大学 | Block chain-oriented node dynamic hierarchical electronic medical record storage method and device |
| CN111599425B (en) * | 2020-04-27 | 2023-12-05 | 合肥工业大学 | Hierarchical electronic medical record storage method and device based on block chain oriented node dynamics |
| CN111597567A (en) * | 2020-05-14 | 2020-08-28 | 腾讯科技（深圳）有限公司 | Data processing method, data processing device, node equipment and storage medium |
| CN111597567B (en) * | 2020-05-14 | 2022-03-04 | 腾讯科技（深圳）有限公司 | Data processing method, data processing device, node equipment and storage medium |
| WO2022068362A1 (en) * | 2020-09-29 | 2022-04-07 | 深圳壹账通智能科技有限公司 | Block chain-based information processing method and apparatus, device, and medium |
| CN112951357A (en) * | 2021-03-23 | 2021-06-11 | 电子科技大学 | Block chain-based virtual medical resource transverse expansion method |
| CN112951357B (en) * | 2021-03-23 | 2023-05-09 | 电子科技大学 | Virtual medical resource lateral expansion method based on blockchain |
| CN114553436A (en) * | 2022-02-23 | 2022-05-27 | 山东省计算中心（国家超级计算济南中心） | Data security sharing and privacy protection method and system for intelligent medical engineering |
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