CN111081331A - Patient file privacy protection method and system - Google Patents
Patient file privacy protection method and system Download PDFInfo
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- CN111081331A CN111081331A CN201910959225.2A CN201910959225A CN111081331A CN 111081331 A CN111081331 A CN 111081331A CN 201910959225 A CN201910959225 A CN 201910959225A CN 111081331 A CN111081331 A CN 111081331A
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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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- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
- H04L9/0825—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
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Abstract
The application discloses a patient profile privacy protection method and system, wherein the method comprises the following steps: authorizing a given medical institution account to read and write one or more items of patient profile information in response to the patient obtaining account permissions; encrypting the patient file authorization item decrypted by the patient private key by using a public key of a specified medical institution, and then calling a block chain intelligent contract action to send the encrypted patient file authorization item to an account of the specified medical institution; the account of the appointed medical institution automatically synchronizes the patient file block data, and the private key of the appointed medical institution is used for decrypting the patient file item for checking; updating the patient profile in response to the designated medical institution, encrypting the updated patient profile item with the public key of the patient, and then invoking a blockchain intelligent contract action to send to the patient account; the patient account automatically synchronizes the patient profile block data, and adds the effective authorization item in the updated patient profile item to the patient profile; and encrypting the patient file by using the patient public key and then storing the patient file. The invention enables effective protection of patient profile privacy.
Description
Technical Field
The present application relates to the field of electrical digital data processing, and in particular, to a method and system for privacy protection of patient profiles.
Background
In the medical industry, health records, medical record information, patient information and the like are very important privacy data, need to be carefully treated, have different read-write authorities and visibility aiming at different scenes, and need to be tamper-proof and traceable under certain specific scenes, so that the individual privacy of patients can be conveniently shared among medical institutions and fully guaranteed. Most systems achieve these effects and purposes through centralized database authority control, encryption and other means. However, technical vulnerabilities are still available to developers, operation and maintenance persons of the system.
Disclosure of Invention
In order to overcome the defects in the prior art, the technical problem to be solved by the invention is to provide a method and a system for protecting privacy of a patient file, which can more effectively protect the privacy data of a patient.
To solve the technical problem, according to a first aspect of the present invention, there is provided a method for protecting privacy of a patient profile, the method comprising:
establishing a medical institution account and generating a medical institution public key and a medical institution private key;
establishing a patient account and a patient profile and generating a patient public key and a patient private key;
in response to the patient obtaining the patient account authority through the patient private key, authorizing the specified medical institution account to read and write one or more items of patient profile information;
responding to the authorization of a patient to a specified medical institution, encrypting a patient file authorization item decrypted by a patient private key by using a public key of the specified medical institution, and then calling a block chain intelligent contract action to send the encrypted patient file item to an account of the specified medical institution;
appointing an account of the medical institution to automatically synchronize the patient file block data, synchronizing the patient file items in the receipt to a file list, and decrypting the patient file items by using a private key of the appointed medical institution for checking;
updating the patient profile in response to the designated medical institution, encrypting the updated patient profile item with the patient's public key, and then invoking a blockchain intelligent contract action to send the encrypted updated patient profile item to the patient account;
the patient account automatically synchronizes the patient profile block data, decrypts the updated patient profile item in the receipt with the patient private key, and adds the valid authorization item in the updated patient profile item to the patient profile; and
and encrypting the patient file by using the patient public key and writing the encrypted patient file into the patient account health file for storage.
As an improvement of the method of the present invention, the method further comprises: and encrypting the patient file encrypted by the patient public key by using a supervisor public key, and then backing up and storing the file.
As another improvement of the method of the present invention, the method further comprises: and automatically deleting the expired authorization list and archive list data in response to account synchronization.
As a further improvement of the method of the present invention, the method further comprises: a medical institution account and/or patient account historical operational record is read from the block data.
As a further improvement of the method of the invention, the method further comprises: in response to receiving the patient request, the supervisor resets the patient key and/or restores the patient profile.
As another improvement of the method of the present invention, the method further comprises: in response to receiving the healthcare facility request, the supervisor resets the healthcare facility key.
As another improvement of the method of the present invention, the medical institution interacts with the blockchain in such a way that the offline signature is forwarded to the gateway broadcast.
To solve the above technical problem, according to a second aspect of the present invention, there is provided a patient profile privacy protection system, comprising:
the medical institution registration module is used for establishing a medical institution account and generating a medical institution public key and a medical institution private key;
the patient registration module is used for establishing a patient account and a patient file and generating a patient public key and a patient private key;
the authorization module is used for responding to the patient to acquire the patient account authority through the patient private key and authorizing the appointed medical institution account to read and write one or more items of patient profile information;
the first sending module is used for responding to the authorization of the patient to the specified medical institution, encrypting the patient file authorization item decrypted by the patient private key by using the public key of the specified medical institution, and then calling a block chain intelligent contract action to send the encrypted patient file item to the account of the specified medical institution;
the first synchronization module is used for appointing a medical institution account to automatically synchronize the patient file block data, synchronizing the patient file items in the receipt to a file list, and decrypting the patient file items by using a private key of the appointed medical institution to check;
a second sending module, configured to update the patient profile in response to a designated medical institution, encrypt the updated patient profile item with the public key of the patient, and then invoke a blockchain intelligent contract action to send the encrypted updated patient profile item to the patient account;
a second synchronization module for the patient account to automatically synchronize the patient profile block data, decrypt the updated patient profile item in the receipt with the patient private key, and add the valid authorization item in the updated patient profile item to the patient profile; and
and the encryption module is used for encrypting the patient file by using the patient public key and then writing the patient file into the patient account health file for storage.
To solve the above technical problem, the tangible computer readable medium of the present invention comprises computer program code for performing the patient profile privacy protection method of the present invention.
To solve the above technical problem, the present invention provides an apparatus, comprising at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least some of the steps of the patient profile privacy protection method of the present invention.
According to the invention, through the combination of the asymmetric encryption technology and the block chain intelligent contract, all traditional medical operation steps and data (privacy information is encrypted by the asymmetric encryption technology in advance) are put into the block chain intelligent contract, so that all operations are traceable, the block chain intelligent contract has the characteristics of tamper resistance, traceability, sharability and the like, and meanwhile, the privacy of patients can be effectively protected and the independent option of the privacy disclosure of the medical information of the patients can be guaranteed.
Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a flow chart of an embodiment of a method according to the present invention.
FIG. 2 is a schematic diagram of an embodiment of a system according to the present invention.
For the sake of clarity, the figures are schematic and simplified drawings, which only show details which are necessary for understanding the invention and other details are omitted.
Detailed Description
Embodiments and examples of the present invention will be described in detail below with reference to the accompanying drawings.
The scope of applicability of the present invention will become apparent from the detailed description given hereinafter. It should be understood, however, that the detailed description and the specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only.
Figure 1 illustrates a flow diagram of one embodiment of a patient profile privacy protection method in accordance with the present invention.
At step S102, the medical institution establishes an account of the medical institution by the RPC registration service of the block chain node through invitation of the supervisor, and generates a public key and a private key (Base64 code) corresponding to the account based on an asymmetric encryption algorithm, such as an elliptic encryption algorithm, and the key pair can be reset by the supervisor if necessary. The medical institution information includes but is not limited to hospital name, level, type, web address, telephone, mailbox, address, etc. which is transparent and can be viewed by all.
In step S104, when the patient uses the corresponding system for the first time, an account of the patient in the system is established through a registered medical institution, and corresponding public and private keys (and possibly two-dimensional codes thereof) are generated, and the key pair can be reset by the administrator if necessary. The patient profile includes, but is not limited to, name, gender, date of birth, blood type, allergy history, disease history, surgical history, family history, birth history, etc., all of which are stored encrypted with the patient's public key, requiring the patient's individual private key to read or authorize a given medical facility to read or write. The medical facility may also provide key management or escrow services for the patient, increasing the ease of use of the system.
In step S106, when the patient obtains the patient account control right through the patient private key, the specified medical institution account may be authorized to read and write one or more items of patient profile information, and a valid time limit is specified, and if not specified, a certain time limit is defaulted and then the patient profile information expires. The patient may also revoke the currently valid authorization and/or regenerate the public and private key pairs to alter the patient's public key. Based on account authority, a patient can check personal health files, historical authorization, reading and writing and other operations, and partial information and check codes can be derived in a clear text for evidence demonstration if necessary.
In step S108, after the patient authorizes the designated medical facility, the patient profile authorization items, such as disease history, marriage history, etc., decrypted using the patient private key are encrypted with the public key of the designated medical facility, and the blockchain smart contract action is invoked to send the encrypted patient profile items to the designated medical facility account. A blockchain is an ever-growing list of records, with cryptographic links between blocks. Each block contains the cryptographic hash, timestamp, and transaction data of the previous block. By design, the blockchain can resist tampering of data. It is an open, distributed ledger that can effectively record transactions between parties in a verifiable and permanent manner. As a distributed ledger, the blockchain is typically managed by peer-to-peer networks that collectively adhere to the protocols for inter-node communication and authentication of new blocks. Once recorded, the data in any given block cannot be changed retrospectively without changing all subsequent blocks, which requires consensus among most networks. The intelligent contract is an automatic execution contract, and agreement terms between a party A and a party B are directly written into a code line. The code and protocols contained therein reside in a distributed, decentralized blockchain network. Intelligent contract codes and application interfaces (application binding interfaces) are sourced and deployed in a distributed block chain network, and the contract source codes submit professional security audit companies and disclose security audit reports.
At step S110, the designated medical institution account automatically synchronizes the patient profile block data, synchronizes the patient profile items in the receipt to the profile list, and then can decrypt the patient profile items for viewing with the private key of the designated medical institution.
In step S112, if the designated medical institution has an update to the patient profile, such as adding a new record, the updated patient profile item is encrypted with the patient' S public key, and then a blockchain intelligent contract action is invoked to send the encrypted updated patient profile item to the patient account.
In step S114, the patient account automatically synchronizes the patient profile block data, decrypts the updated patient profile item in the receipt with the patient private key, and adds the valid authorization item in the updated patient profile item to the patient profile.
In step S116, the patient profile is encrypted with the patient public key and then written into the patient account health profile for storage for later use.
The medical institution interacts with the block chain in a way of forwarding the offline signature to the gateway broadcast so as to guarantee the information security.
In other embodiments, the inventive method may further comprise: encrypting the patient file encrypted by the patient public key by using a supervisor public key to backup and store the file; and/or automatically deleting expired authorization list and archive list data when the accounts are synchronized; and/or reading medical institution accounts and/or patient account historical operating records from the block data via a plug-in, such as a historical block interface for fast reading data. In addition, the supervisor can provide the functions of resetting the key, recovering the file, processing the special case appointed in advance and the like. The medical institution or independent third party may also provide access for key management, data synchronization, information inquiry, authorization, etc. of the patient account.
FIG. 2 illustrates a block diagram of one embodiment of a patient profile privacy protection system in accordance with the present invention, the system comprising: the medical institution registration module 202 is used for establishing a medical institution account and generating a medical institution public key and a medical institution private key; a patient registration module 204 for establishing a patient account, a patient profile and generating a patient public key and a patient private key; the authorization module 206 is used for authorizing the appointed medical institution account to read and write one or more items of patient profile information in response to the patient obtaining the patient account authority through the patient private key; a first sending module 208, configured to, in response to authorization of a specified medical institution by a patient, encrypt a patient profile authorization item decrypted by a patient private key with a public key of the specified medical institution, and then invoke a blockchain intelligent contract action to send the encrypted patient profile item to an account of the specified medical institution; a first synchronization module 210, configured to assign an account of a medical institution to automatically synchronize patient profile block data, synchronize a patient profile item in a receipt to a profile list, and decrypt the patient profile item with a private key of the assigned medical institution for viewing; a second sending module 212 for updating the patient profile in response to the designated medical institution, encrypting the updated patient profile item with the public key of the patient, and then invoking a blockchain smart contract action to send the encrypted updated patient profile item to the patient account; a second synchronization module 214 for the patient account to automatically synchronize the patient profile block data, decrypt the updated patient profile item in the receipt with the patient private key, and append the valid authorization item in the updated patient profile item to the patient profile; and an encryption module 216, configured to encrypt the patient profile with the patient public key and write the encrypted patient profile into the patient account health profile for storage.
The particular features, structures, or characteristics of the various embodiments described herein may be combined as suitable in one or more embodiments of the invention. Additionally, in some cases, the order of steps depicted in the flowcharts and/or in the pipelined process may be modified, as appropriate, and need not be performed exactly in the order depicted. In addition, various aspects of the invention may be implemented using software, hardware, firmware, or a combination thereof, and/or other computer implemented modules or devices that perform the described functions. Software implementations of the present invention may include executable code stored in a computer readable medium and executed by one or more processors. The computer readable medium may include a computer hard drive, ROM, RAM, flash memory, portable computer storage media such as CD-ROM, DVD-ROM, flash drives, and/or other devices, for example, having a Universal Serial Bus (USB) interface, and/or any other suitable tangible or non-transitory computer readable medium or computer memory on which executable code may be stored and executed by a processor. The present invention may be used in conjunction with any suitable operating system.
As used herein, the singular forms "a", "an" and "the" include plural references (i.e., have the meaning "at least one"), unless the context clearly dictates otherwise. It will be further understood that the terms "has," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The foregoing describes some preferred embodiments of the present invention, but it should be emphasized that the invention is not limited to these embodiments, but can be implemented in other ways within the scope of the inventive subject matter. Various modifications and alterations of this invention will become apparent to those skilled in the art without departing from the spirit and scope of this invention.
Claims (10)
1. A method of patient profile privacy protection, the method comprising:
establishing a medical institution account and generating a medical institution public key and a medical institution private key;
establishing a patient account and a patient profile and generating a patient public key and a patient private key;
in response to the patient obtaining the patient account authority through the patient private key, authorizing the specified medical institution account to read and write one or more items of patient profile information;
responding to the authorization of a patient to a specified medical institution, encrypting a patient file authorization item decrypted by a patient private key by using a public key of the specified medical institution, and then calling a block chain intelligent contract action to send the encrypted patient file item to an account of the specified medical institution;
appointing an account of the medical institution to automatically synchronize the patient file block data, synchronizing the patient file items in the receipt to a file list, and decrypting the patient file items by using a private key of the appointed medical institution for checking;
updating the patient profile in response to the designated medical institution, encrypting the updated patient profile item with the patient's public key, and then invoking a blockchain intelligent contract action to send the encrypted updated patient profile item to the patient account;
the patient account automatically synchronizes the patient profile block data, decrypts the updated patient profile item in the receipt with the patient private key, and adds the valid authorization item in the updated patient profile item to the patient profile; and
and encrypting the patient file by using the patient public key and writing the encrypted patient file into the patient account health file for storage.
2. The method of claim 1, further comprising:
and encrypting the patient file encrypted by the patient public key by using a supervisor public key, and then backing up and storing the file.
3. The method of claim 1, wherein the authorizing further comprises specifying a validity period for the authorized item.
4. The method of claim 3, further comprising:
and automatically deleting the expired authorization list and archive list data in response to account synchronization.
5. The method of claim 1, further comprising:
a medical institution account and/or patient account historical operational record is read from the block data.
6. The method of claim 1, further comprising:
in response to receiving the patient request, the supervisor resets the patient key and/or restores the patient profile.
7. The method of claim 1, further comprising:
in response to receiving the healthcare facility request, the supervisor resets the healthcare facility key.
8. The method of claim 1, further comprising:
and in response to the patient obtaining the patient account authority through the patient private key, regenerating the public key and the private key of the patient.
9. The method of claim 1, wherein the medical institution interacts with the blockchain in such a way that the offline signature is forwarded to the gateway broadcast.
10. A patient profile privacy protection system, the system comprising:
the medical institution registration module is used for establishing a medical institution account and generating a medical institution public key and a medical institution private key;
the patient registration module is used for establishing a patient account and a patient file and generating a patient public key and a patient private key;
the authorization module is used for responding to the patient to acquire the patient account authority through the patient private key and authorizing the appointed medical institution account to read and write one or more items of patient profile information;
the first sending module is used for responding to the authorization of the patient to the specified medical institution, encrypting the patient file authorization item decrypted by the patient private key by using the public key of the specified medical institution, and then calling a block chain intelligent contract action to send the encrypted patient file item to the account of the specified medical institution;
the first synchronization module is used for appointing a medical institution account to automatically synchronize the patient file block data, synchronizing the patient file items in the receipt to a file list, and decrypting the patient file items by using a private key of the appointed medical institution to check;
a second sending module, configured to update the patient profile in response to a designated medical institution, encrypt the updated patient profile item with the public key of the patient, and then invoke a blockchain intelligent contract action to send the encrypted updated patient profile item to the patient account;
a second synchronization module for the patient account to automatically synchronize the patient profile block data, decrypt the updated patient profile item in the receipt with the patient private key, and add the valid authorization item in the updated patient profile item to the patient profile; and
and the encryption module is used for encrypting the patient file by using the patient public key and then writing the patient file into the patient account health file for storage.
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