CN109741819B - Clinical care system and method based on block chain and data encryption method - Google Patents
Clinical care system and method based on block chain and data encryption method Download PDFInfo
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Abstract
A clinical care system, a method and a data encryption method based on a block chain relate to the technical field of the block chain, the system comprises a nurse station data system, a doctor data system and patient intelligent equipment which are respectively connected with a block chain unit, the block chain unit is connected with a ward server, the ward server records and stores data information of patients in wards, the block chain unit comprises a block chain network and is integrated with an encryption unit, an area chain node, a response node, a storage unit and an information release unit which are located in the block chain network, the area chain node is in information communication with the response node, the storage unit is in communication interaction with the information release unit, and the storage unit and the information release unit are in communication interaction with the storage unit. The invention can realize the information exchange of the patient data, the data can not be falsified and can be permanently stored, the medical personnel can conveniently grasp the integral illness state of the patient, and the safety performance is high by encrypting the data.
Description
Technical Field
The present invention relates to the field of blockchain technology, and more particularly, to a clinical care system and method based on blockchain, and a data encryption method.
Background
Clinical care, one of the main responsibilities of nurses and attendants, is usually directed to almost every aspect of a patient's daily life, where infusion and medication are almost all clinical care-related parts of the patient, and the physician is required to further treat the patient according to the care and recovery of the patient. With the development of electronic information technology, the current patient data is usually in an electronic mode, and in hospitals, because of a large number of patients, the case information data of each patient, especially the inpatient is huge, so that the management is very inconvenient, and when a doctor changes shifts, if the patient data is changed, other people cannot see which doctor comes from the data. Causing medical inconvenience to a certain extent. In recent years, the block chain technology is widely spread and applied due to the obvious characteristics of decentralization, non-tamper property, transparent process, traceability and the like, and the invention discloses a clinical care system and a data processing system method based on the block chain.
Disclosure of Invention
Aiming at the defects of the prior art, the invention discloses a clinical care system and method based on a block chain and a data encryption method, wherein the block chain technology is adopted, so that doctors, nurses and patients can realize information exchange of data through block chain units, the data cannot be falsified and is permanently stored, and the medical care personnel can conveniently grasp the integral state of illness of the patients; meanwhile, the invention adopts the encryption unit to encrypt the data released by the information release unit, thereby ensuring the security of data transmission.
The invention adopts the following technical scheme:
a blockchain-based clinical care system comprising a nurses ' station data system, a doctors ' data system and a patients ' smart device, further comprising:
the ward server is used for recording and storing data information of the patients in the wards;
the block chain units are all in signal connection with the ward server;
the nurse station data system, the doctor data system and the patient intelligent equipment are respectively connected with the block chain unit;
the block chain unit comprises a block chain network, an encryption unit, an area chain node, a response node, a storage unit and an information release unit, wherein the encryption unit, the area chain node, the response node, the storage unit and the information release unit are positioned in the block chain network;
the region link node is in communication connection with the response node, the storage unit is in communication connection with the information release unit, and the storage unit and the information release unit are in communication connection with the storage unit respectively;
the blockchain network comprises: a nurse station data system node, a doctor data system node, a patient intelligent equipment node and an information transfer node;
the nurse station data system node is used for connecting the communication between the nurse station and the block chain network; the doctor data system node is used for connecting a doctor and the communication of the blockchain network; the patient smart device node is for connecting a patient to communication of a blockchain network; the information transfer node is used for connecting information communication among the block chain units;
the nurse station data system node interacts with data information of the doctor data system node through the block chain network, the response node feeds back a nursing instruction sent to the nurse station data system node by the doctor data system node, and the information transfer node converts information of the nurse station data system node, the doctor data system node and the patient intelligent equipment node;
the block chain nodes are connected in a chain manner, and the block chain nodes issue data information of each adjacent node in at least one target adjacent node in the ward server, the nurse station data system, the doctor data system and the patient intelligent equipment to a block chain network;
the information release unit is a hardware device for releasing dynamic memory space, the information release unit is arranged to acquire information from the storage unit, and release part of information by using the C language programmer to release the memory space according to the request of a nurse station, a doctor or a patient, and the released information is transmitted to a data system node of the nurse station, a data system node of the doctor or an intelligent device node of the patient through an information transfer node;
wherein the encryption unit in the blockchain unit comprises: an intermediate key generation unit for generating an intermediate key from the random number; an expanded key generation unit for generating an expanded key from the intermediate key generated by the intermediate key generation unit; a scramble arithmetic operation unit that generates scramble data by performing a scramble arithmetic operation on target data and then generates an expanded key.
Further, the information transfer node carries information transmitted by any one of a nurse station, a doctor and a patient and information released by the information release unit, and distributes the information acquired from the blockchain network to the blockchain nodes and the adjacent nodes thereof and expands the information outwards in a chained manner.
Further, the information release unit includes an information release control unit, an information release receiving unit, an information release matching unit, and an information confirmation unit, where the information release control unit controls a range released by the information release receiving unit, the information release receiving unit receives a control instruction of the information release control unit, the information release matching unit receives the information received by the information release receiving unit, and the information confirmation unit receives the information that the information release matching unit is successfully matched.
A method of a blockchain based clinical care system, the method comprising:
step 1: the nurse inputs the patient data into the ward server; a nurse collects the patient data of a plurality of wards, and inputs the data of all patients into a ward server in the form of electronic information for filing, so that the medical staff can inquire, start and track the data conveniently;
step 2: the data input into the ward server by the nurse is subjected to information release through the block chain unit; after the data of the patient is converted into the form of electronic information, uploading the data of the patient to the blockchain node through the blockchain network by the ward server;
and step 3: the block chain unit filters and encrypts information to be issued; the data of the patient is stored in a storage unit, the information release unit retrieves the information to be released from the storage unit, the information which is not required to be released is stored in the storage unit, so that the information to be released is filtered, and the encryption unit encrypts the information to be released by the information release unit;
and 4, step 4: the encryption unit performs encryption and decryption work; the encryption unit encrypts and decrypts the received data by adopting an encryption algorithm;
and 5: nurse, doctor and patient perform information interaction through acquired password
A method of data encryption for a blockchain based clinical care system, the method comprising:
step 1: generating an intermediate key from the random number;
step 2: generating an extended key from the generated intermediate key;
and step 3: scrambled data is generated by performing a scrambling operation on the target data and the generated extended key.
Further, the method for generating the intermediate key from the random number includes:
step 1: obtaining first arithmetic operation data by performing arithmetic operation on the random number and the first fixed number;
step 2: obtaining second arithmetic operation data by performing arithmetic operation on the random number and the second fixed number;
and step 3: generating a first intermediate key through repeated processing, and further obtaining a plurality of intermediate keys; the first intermediate key is generated by performing a plurality of scrambling operations on the first arithmetic operation data and the second arithmetic operation data while changing the first fixed number and the second fixed number.
Further, the method for generating the expanded key from the generated intermediate key includes:
step 1: selecting any one of a plurality of intermediate keys using an intermediate key selection table;
step 2: generating a plurality of unit expansion keys from the selected intermediate key;
and step 3: an extended key is generated by combining the generated plurality of unit extended keys.
Further, the method for generating random numbers includes:
step 1: selecting any blockchain in the blockchain network;
step 2: taking any unpackaged block in the selected block chain as a target block;
and step 3: after the target block is generated in the block chain network, extracting a hash value and transaction data in the target block; and splicing the transaction data and the hash value to obtain a random number.
Further, the method for generating random numbers further comprises:
carrying out hash operation on the random number to obtain a commercial random number with a preset length; the step of extracting the hash value and at least part of the transaction data in the target block comprises: extracting a complete hash value in the target block; extracting any part of the transaction data in the target block according to a preset length to obtain at least part of transaction data; the step of extracting any part of the transaction data in the target block comprises: and extracting the digital part of the transaction data in the target block according to a preset length.
Has the positive and beneficial effects that:
according to the invention, the block chain unit is introduced into clinical care, so that information communication among nurses, doctors and patients is effectively realized, and data has a function of being not falsified, so that the cases of the patients are permanently stored in a nurse station data system, a doctor data system and patient intelligent equipment, when the patients see a doctor again, the doctors can easily acquire the data of the patients from the doctor data system, and the conditions of the patients can be comprehensively measured based on historical cases; the invention also realizes the information conversation between the nurse and the doctor through the nurse station data system and the doctor data system, and the doctor can directly give nursing instructions to the nurse, thereby being convenient for nursing; the invention encrypts the data information through the encryption unit, so that only authorized personnel can access the data, and the confidentiality of data transmission is improved.
Drawings
FIG. 1 is a system architecture diagram of a blockchain-based clinical care system of the present invention;
FIG. 2 is a block chain network node diagram in the system of a clinical care system based on block chains according to the present invention;
FIG. 3 is a block chain network node diagram of an embodiment of the system of a clinical care system based on block chains of the present invention;
FIG. 4 is a schematic diagram of a blockchain unit in a clinical care system based on blockchains according to the present invention;
FIG. 5 is a flow chart of a method for processing clinical care data based on a blockchain according to the present invention;
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, and it should be understood that the embodiments described herein are merely for the purpose of illustrating and explaining the present invention and are not intended to limit the present invention.
As shown in fig. 1 to 5, a clinical care system based on a blockchain includes a nurse station data system, a doctor data system, and a patient intelligent device, and further includes:
the ward server is used for recording and storing data information of the patients in the wards;
the block chain units are all in signal connection with the ward server;
the nurse station data system, the doctor data system and the patient intelligent equipment are respectively connected with the block chain unit;
the block chain unit comprises a block chain network, an encryption unit, an area chain node, a response node, a storage unit and an information release unit, wherein the encryption unit, the area chain node, the response node, the storage unit and the information release unit are positioned in the block chain network;
the region link node is in communication connection with the response node, the storage unit is in communication connection with the information release unit, and the storage unit and the information release unit are in communication connection with the storage unit respectively;
the blockchain network comprises: a nurse station data system node, a doctor data system node, a patient intelligent equipment node and an information transfer node;
the nurse station data system node is used for connecting the communication between the nurse station and the block chain network; the doctor data system node is used for connecting a doctor and the communication of the blockchain network; the patient smart device node is for connecting a patient to communication of a blockchain network; the information transfer node is used for connecting information communication among the block chain units;
the nurse station data system node interacts with data information of the doctor data system node through the block chain network, the response node feeds back a nursing instruction sent to the nurse station data system node by the doctor data system node, and the information transfer node converts information of the nurse station data system node, the doctor data system node and the patient intelligent equipment node;
the block chain nodes are connected in a chain manner, and the block chain nodes issue data information of each adjacent node in at least one target adjacent node in the ward server, the nurse station data system, the doctor data system and the patient intelligent equipment to a block chain network;
the information release unit is a hardware device for releasing dynamic memory space, the information release unit is arranged to acquire information from the storage unit, and release part of information by using the C language programmer to release the memory space according to the request of a nurse station, a doctor or a patient, and the released information is transmitted to a data system node of the nurse station, a data system node of the doctor or an intelligent device node of the patient through an information transfer node;
wherein the encryption unit in the blockchain unit comprises: an intermediate key generation unit for generating an intermediate key from the random number; an expanded key generation unit for generating an expanded key from the intermediate key generated by the intermediate key generation unit; a scramble arithmetic operation unit that generates scramble data by performing a scramble arithmetic operation on target data and then generates an expanded key.
Further, the information transfer node carries information transmitted by any one of a nurse station, a doctor and a patient and information released by the information release unit, and distributes the information acquired from the blockchain network to the blockchain nodes and the adjacent nodes thereof and expands the information outwards in a chained manner.
Further, the information release unit includes an information release control unit, an information release receiving unit, an information release matching unit, and an information confirmation unit, where the information release control unit controls a range released by the information release receiving unit, the information release receiving unit receives a control instruction of the information release control unit, the information release matching unit receives the information received by the information release receiving unit, and the information confirmation unit receives the information that the information release matching unit is successfully matched.
A method of a blockchain based clinical care system, the method comprising:
step 1: the nurse inputs the patient data into the ward server; a nurse collects the patient data of a plurality of wards, and inputs the data of all patients into a ward server in the form of electronic information for filing, so that the medical staff can inquire, start and track the data conveniently;
step 2: the data input into the ward server by the nurse is subjected to information release through the block chain unit; after the data of the patient is converted into the form of electronic information, uploading the data of the patient to the blockchain node through the blockchain network by the ward server;
and step 3: the block chain unit filters and encrypts information to be issued; the data of the patient is stored in a storage unit, the information release unit retrieves the information to be released from the storage unit, the information which is not required to be released is stored in the storage unit, so that the information to be released is filtered, and the encryption unit encrypts the information to be released by the information release unit;
and 4, step 4: the encryption unit performs encryption and decryption work; the encryption unit encrypts and decrypts the received data by adopting an encryption algorithm;
and 5: nurse, doctor and patient perform information interaction through acquired password
A method of data encryption for a blockchain based clinical care system, the method comprising:
step 1: generating an intermediate key from the random number;
step 2: generating an extended key from the generated intermediate key;
and step 3: scrambled data is generated by performing a scrambling operation on the target data and the generated extended key.
Further, the method for generating the intermediate key from the random number includes:
step 1: obtaining first arithmetic operation data by performing arithmetic operation on the random number and the first fixed number;
step 2: obtaining second arithmetic operation data by performing arithmetic operation on the random number and the second fixed number;
and step 3: generating a first intermediate key through repeated processing, and further obtaining a plurality of intermediate keys; the first intermediate key is generated by performing a plurality of scrambling operations on the first arithmetic operation data and the second arithmetic operation data while changing the first fixed number and the second fixed number.
Further, the method for generating the expanded key from the generated intermediate key includes:
step 1: selecting any one of a plurality of intermediate keys using an intermediate key selection table;
step 2: generating a plurality of unit expansion keys from the selected intermediate key;
and step 3: an expanded key is generated by combining the generated plurality of unit expanded keys.
The following describes a specific work flow of the encryption method by using an encryption device to which the encryption method is applied:
the encryption device includes: a host device, a cryptographic accelerator, a ROM (read only memory), a RAM (random access memory), and an interface. The host device, the ROM, the RAM, and the interface are connected to each other through a bus. The host device and the cryptographic accelerator are connected by a serial line.
The host device has a random number generation unit, a first random data generation unit, a first storage unit, a host-side interface unit, and a control unit. The first storage unit has a byte identity verification code, a first intermediate key selection table, and a second intermediate key selection table.
The encryption accelerator has an encryption unit, a second scrambled data generation unit, a second storage unit, and an encryption side interface unit. The second storage unit stores the authentication code, which is the same as the authentication code stored in the first storage unit. The second storage unit stores a first intermediate key selection table and a second intermediate key selection table, which are the same as the first intermediate key selection table and the second intermediate key selection table stored in the first storage unit.
The random number generation unit generates a random number according to an instruction of the control unit, and outputs the generated random number to the first scrambled data generation unit and the first storage unit.
The first scramble data generation unit has a first intermediate key generation unit, a first extended key generation unit, and a first scramble arithmetic operation unit.
The first intermediate key generation unit has a random number storage buffer, a first random number selector, a second random number selector, a first fixed number selector, and a second fixed number selector. The first intermediate key generation unit also has an adder, a multiplier, a dedicated OR unit, and an intermediate key storage buffer.
The random number storage buffer stores the 16-byte random number generated by the random number generation unit. The first random number selector and the second random number selector sequentially select 16 bytes of random numbers stored in the random number storage buffer, 4 bytes at a time. First, the first random number selector and the second random number selector select a first random number R1, which is the first 4-byte random number. Next, the first random number selector and the second random number selector select a second random number R2, which is the next 4-byte random number. Next, the first random number selector and the second random number selector select a third random number R3, which is the next 4-byte random number. Then, the first random number selector and the second random number selector select a fourth random number R4, which is the last 4-byte random number. After selecting the fourth random number R4, the first random number selector and the second random number selector select the first random number R1. Then, the first random number selector and the second random number selector sequentially select the first random number R1 through the fourth random number R4.
Further, the method for generating random numbers includes:
step 1: selecting any blockchain in the blockchain network;
step 2: taking any unpackaged block in the selected block chain as a target block;
and step 3: after the target block is generated in the block chain network, extracting a hash value and transaction data in the target block; and splicing the transaction data and the hash value to obtain a random number.
Specifically, in step 1, the blockchain network includes a plurality of blockchains, and therefore, any one blockchain selected in the blockchain network can be used to generate the random number. Optionally, the longest blockchain may be selected, but the invention is not limited thereto, and other non-longest blockchains may also be selected.
In step 2, each block in the block chain includes a timestamp information representing the generation time of the current block, and since the block records all transaction data performed in the block chain network during the period from the generation of the previous block to the generation of the new block in the generation process of the new block, any non-encapsulated block refers to a block that has not been generated after the block newly generated in the block chain. The block that is not yet generated may be the next block to be generated, the next block, or any block after the next block, and in short, all blocks to be generated in the future may be regarded as unpacked blocks of the present invention. The reason why the unpacked block is selected as the target block for generating the random number is that the data contained in the unpacked block is unpredictable and not artificially changeable, so that the random number generated based on the data of the unpacked block in the block chain has no regularity and is unpredictable and a true random number. However, if the random number is generated using the existing block extraction information, it may be predicted or previously implanted with harmful information.
In step 3, after a block to be generated in the future is selected as a target block in step 2, since each block in the block chain is calculated for transaction data within a period of time, the target block is not actually generated and linked on the block chain, and a period of time is needed to wait until the target block is generated and linked on the block chain from the currently newly generated block. After the target tiles are generated and linked in the tile chain, the transaction data and hash values may be extracted from the pre-selected target tiles.
For the hash value, since the hash value of each block is determined by the hash value of the previous block, the content of all descendant blocks derived from the block needs to be changed to change the content of one block, and the workload certification mechanism proves that the transaction data is not modifiable, so that the hash value actually contains historical transaction traces of all blocks before the block chain, which represent transaction history, and the transaction traces are not modifiable or forged, and therefore, the possibility of preventing the random number from being forged can be realized by extracting the hash value in the block. For transaction data, the transaction data embodies the current characteristics of the block or the transaction data; if only the transaction data is extracted, the transaction data is possibly the same as or repeated with the previous transaction data, so that the hash value representing the historical information is combined, the random number calculated and output through the transaction data and the hash value of the block has real unpredictability, the real random number generation is realized, and the situation that the repeated information occurs when the random number is generated only through the transaction data can be avoided. Specifically, when the transaction data is extracted, the digital part in the transaction data is extracted, and the non-digital part is not extracted. The extracted transaction data and the hash value are all embodied as decimal numerical values without other data types such as characters and the like.
Further, the method for generating random numbers further comprises:
carrying out hash operation on the random number to obtain a commercial random number with a preset length; the step of extracting the hash value and at least part of the transaction data in the target block comprises: extracting a complete hash value in the target block; extracting any part of the transaction data in the target block according to a preset length to obtain at least part of transaction data; the step of extracting any part of the transaction data in the target block comprises: and extracting the digital part of the transaction data in the target block according to a preset length.
Through the embodiment, when the patient sees a doctor again, the doctor can easily acquire the data of the patient from the doctor data system, and the condition of the patient can be comprehensively measured based on historical cases; the invention also realizes the information conversation between the nurse and the doctor through the nurse station data system and the doctor data system, and the doctor can directly give nursing instructions to the nurse, thereby being convenient for nursing; the invention encrypts the data information through the encryption unit, so that only authorized personnel can access the data, and the confidentiality of data transmission is improved.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that these specific embodiments are merely illustrative and that various omissions, substitutions and changes in the form of the detail of the methods and systems described above may be made by those skilled in the art without departing from the spirit and scope of the invention. For example, it is within the scope of the present invention to combine the steps of the above-described methods to perform substantially the same function in substantially the same way to achieve substantially the same result. Accordingly, the scope of the invention is to be limited only by the following claims.
Claims (9)
1. A blockchain-based clinical care system comprising a nurses ' station data system, a doctors ' data system and a patients ' smart device, characterized in that it further comprises:
the ward server is used for recording and storing data information of the patients in the wards;
the block chain units are all in signal connection with the ward server;
the nurse station data system, the doctor data system and the patient intelligent equipment are respectively connected with the block chain unit;
the block chain unit comprises a block chain network, an encryption unit, an area chain node, a response node, a storage unit and an information release unit, wherein the encryption unit, the area chain node, the response node, the storage unit and the information release unit are positioned in the block chain network;
the region link node is in communication connection with the response node, the storage unit is in communication connection with the information release unit, and the storage unit and the information release unit are in communication connection with the storage unit respectively;
the blockchain network comprises: a nurse station data system node, a doctor data system node, a patient intelligent equipment node and an information transfer node;
the nurse station data system node is used for connecting the communication between the nurse station and the block chain network; the doctor data system node is used for connecting a doctor and the communication of the blockchain network; the patient smart device node is for connecting a patient to communication of a blockchain network; the information transfer node is used for connecting information communication among the block chain units;
the nurse station data system node interacts with data information of the doctor data system node through the block chain network, the response node feeds back a nursing instruction sent to the nurse station data system node by the doctor data system node, and the information transfer node converts information of the nurse station data system node, the doctor data system node and the patient intelligent equipment node;
the block chain nodes are connected in a chain manner, and the block chain nodes issue data information of each adjacent node in at least one target adjacent node in the ward server, the nurse station data system, the doctor data system and the patient intelligent equipment to a block chain network;
the information release unit is a hardware device for releasing dynamic memory space, the information release unit is arranged to acquire information from the storage unit, release part of information by using a C language programmer according to the request of a nurse station, a doctor or a patient and transmit the released information to a data system node of the nurse station, a data system node of the doctor or an intelligent device node of the patient through an information transfer node;
wherein the encryption unit in the blockchain unit comprises: an intermediate key generation unit for generating an intermediate key from the random number; an expanded key generation unit for generating an expanded key from the intermediate key generated by the intermediate key generation unit; a scramble arithmetic operation unit that generates scramble data by performing a scramble operation on the target data and the generated extended key.
2. The blockchain-based clinical care system according to claim 1, wherein the information relay node carries information transmitted from any one of a nurse station, a doctor, and a patient and information released by the information releasing unit, distributes information acquired from the blockchain network to the blockchain nodes and their neighboring nodes, and expands outward in a chain manner.
3. The blockchain-based clinical care system according to claim 1, wherein the information release unit includes an information release control unit that controls a range of release by the information release receiving unit, an information release receiving unit that receives a control instruction of the information release control unit, an information release matching unit that receives the information received by the information release receiving unit, and an information confirmation unit that receives information that matching by the information release matching unit is successful.
4. A method of a blockchain based clinical care system according to one of claims 1 to 3, wherein the method comprises:
the nurse inputs the patient data into the ward server; a nurse collects the patient data of a plurality of wards, and inputs the data of all patients into a ward server in the form of electronic information for filing, so that the medical staff can inquire, start and track the data conveniently;
the data input into the ward server by the nurse is subjected to information release through the block chain unit; after the data of the patient is converted into the form of electronic information, uploading the data of the patient to the blockchain node through the blockchain network by the ward server;
the block chain unit filters and encrypts information to be issued; the data of the patient is stored in a storage unit, the information release unit retrieves the information to be released from the storage unit, the information which is not required to be released is stored in the storage unit, so that the information to be released is filtered, and the encryption unit encrypts the information to be released by the information release unit;
the encryption unit performs encryption and decryption work; the encryption unit encrypts and decrypts the received data by adopting an encryption algorithm;
and the nurse, the doctor and the patient perform information interaction through the acquired password.
5. A data encryption method for a blockchain-based clinical care system according to one of claims 1 to 3, wherein the method comprises:
generating an intermediate key from the random number;
generating an extended key from the generated intermediate key;
scrambled data is generated by performing a scrambling operation on the target data and the generated extended key.
6. The data encryption method for a blockchain-based clinical care system according to claim 5, wherein the method of generating the intermediate key from the random number includes:
obtaining first arithmetic operation data by performing arithmetic operation on the random number and the first fixed number;
obtaining second arithmetic operation data by performing arithmetic operation on the random number and the second fixed number;
generating a first intermediate key through repeated processing, and further obtaining a plurality of intermediate keys; the first intermediate key is generated by performing a plurality of scrambling operations on the first arithmetic operation data and the second arithmetic operation data while changing the first fixed number and the second fixed number.
7. The data encryption method for a blockchain-based clinical care system according to claim 6, wherein the method of generating the extended key from the generated intermediate key includes:
selecting any one of a plurality of intermediate keys using an intermediate key selection table;
generating a plurality of unit expansion keys from the selected intermediate key;
an expanded key is generated by combining the generated plurality of unit expanded keys.
8. The data encryption method for a blockchain-based clinical care system according to claim 7, wherein the method of generating the random number includes:
selecting any blockchain in the blockchain network;
taking any unpackaged block in the selected block chain as a target block;
after the target block is generated in the block chain network, extracting a hash value and transaction data in the target block; and splicing the transaction data and the hash value to obtain a random number.
9. The data encryption method for a blockchain-based clinical care system according to claim 8, wherein the method of generating the random number further comprises:
carrying out hash operation on the random number to obtain a commercial random number with a preset length; the step of extracting the hash value and at least part of the transaction data in the target block comprises: extracting a complete hash value in the target block; extracting any part of the transaction data in the target block according to a preset length to obtain at least part of transaction data; the step of extracting any part of the transaction data in the target block comprises: and extracting the digital part of the transaction data in the target block according to a preset length.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018109738870 | 2018-08-24 | ||
| CN201810973887.0A CN109448826A (en) | 2018-08-24 | 2018-08-24 | A kind of clinical care system and data processing method based on block chain |
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| Publication Number | Publication Date |
|---|---|
| CN109741819A CN109741819A (en) | 2019-05-10 |
| CN109741819B true CN109741819B (en) | 2021-04-20 |
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| CN110322952A (en) * | 2019-03-27 | 2019-10-11 | 杨海燕 | A kind of medical care system and its working method based on block chain |
| CN115103651A (en) * | 2020-01-10 | 2022-09-23 | 赫希动力控股股份公司 | Apparatus, system and method for information management in stomatology |
| CN111341403A (en) * | 2020-02-25 | 2020-06-26 | 泰康保险集团股份有限公司 | Patient state monitoring method, device, equipment and computer-readable storage medium |
| CN113012784B (en) * | 2021-03-17 | 2024-02-13 | 秦丽霞 | Block chain infusion control method and device, electronic equipment and storage medium |
| CN113066552A (en) * | 2021-04-20 | 2021-07-02 | 江苏省人民医院（南京医科大学第一附属医院） | Monitoring data management system and method based on block chain technology |
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