WO2022068361A1

WO2022068361A1 - Encryption method and apparatus based on amendment amount, and device, and medium

Info

Publication number: WO2022068361A1
Application number: PCT/CN2021/109265
Authority: WO
Inventors: 贾牧
Original assignee: 深圳壹账通智能科技有限公司
Priority date: 2020-09-29
Filing date: 2021-07-29
Publication date: 2022-04-07
Also published as: CN112100637A

Abstract

Disclosed are an encryption method and apparatus based on an amendment amount, and a device, and a medium, relating to blockchain technology and digital medical technology. The method comprises: acquiring a target function used to describe information, and target information to be processed; acquiring, from a blockchain network, block information corresponding to blocks, and generating, according to the block information, an amendment amount used to amend the target information; amending the target information by using the amendment amount, so as to obtain amended target information; acquiring, according to the target function, coordinate information corresponding to the amended target information; encrypting the coordinate information corresponding to the amended target information, so as to obtain ciphertext of the coordinate information corresponding to the amended target information; and determining the ciphertext of the coordinate information corresponding to the amended target information to be ciphertext of the target information, and storing the ciphertext of the target information in the blockchain network. By using the present application, the security of messages can be improved.

Description

Correction-based encryption method, device, device and medium

This application claims the priority of the Chinese patent application filed on September 29, 2020 with the application number 202011053237.8 and the title of the invention is "An encryption method, device, equipment and medium based on correction amount", the entire contents of which are by reference Incorporated in this application.

technical field

The present application relates to the field of blockchain technology, and in particular, to an encryption method, device, device and medium based on corrections.

Background technique

The inventor realizes that at present, the Internet of Things has become an important part of the Internet, and the number of Internet of Things devices in the world maintains a rapid growth. In the future Internet of Things, due to any individual, group, community, organization, object, product, data, service , processes and activities will all be interconnected through the Internet of Things. Different IoT devices need to receive and store a large amount of information every day. For example, in the field of digital medical technology, hospital management equipment needs to receive and store a large number of patients' electronic information file information and medical treatment information every day. In practice, the inventor found that the information stored in the IoT device is easily tampered with by illegal users, which leads to information leakage, resulting in low information security.

SUMMARY OF THE INVENTION

Embodiments of the present application provide an encryption method, device, device, and medium based on a correction amount, which can improve the security of information.

In a first aspect, an embodiment of the present application provides an encryption method based on a correction amount, and the method includes:

Obtain the objective function used to describe the information, and the target information to be processed;

Obtain block information corresponding to a block from the block chain network, and generate a correction amount for performing correction processing on the target information according to the block information;

Correction processing is performed on the target information by using the correction amount to obtain the corrected target information;

Obtain coordinate information corresponding to the modified target information according to the objective function;

Encrypting the coordinate information corresponding to the modified target information to obtain the ciphertext of the coordinate information corresponding to the modified target information;

The ciphertext of the coordinate information corresponding to the corrected target information is determined as the ciphertext of the target information, and the ciphertext of the target information is stored in the blockchain network.

In the second aspect, an embodiment of the present application provides an encryption device based on a correction amount, the device comprising:

The acquisition module is used to acquire the target function used to describe the information, and the target information to be processed;

A generating module, configured to obtain block information corresponding to a block from the block chain network, and generate a correction amount for performing correction processing on the target information according to the block information;

a processing module, configured to perform correction processing on the target information by using the correction amount to obtain the corrected target information;

The obtaining module is further configured to obtain coordinate information corresponding to the modified target information according to the target function;

an encryption module, configured to encrypt the coordinate information corresponding to the modified target information to obtain the ciphertext of the coordinate information corresponding to the modified target information;

A determination module, configured to determine the ciphertext of the coordinate information corresponding to the corrected target information as the ciphertext of the target information, and store the ciphertext of the target information in the blockchain network.

In a third aspect, an embodiment of the present application provides an electronic device, the device comprising: a processor adapted to implement one or more instructions; and,

A computer storage medium storing one or more instructions adapted to be loaded by the processor and perform the following steps:

Obtain the block information corresponding to the block from the block chain network, and generate the correction amount used to correct the target information according to the block information;

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, including: the computer-readable storage medium stores one or more instructions, and the one or more instructions are suitable for being loaded and executed by a processor Follow the steps below:

The present application can improve the security of the target information, and avoid the ciphertext of the target information being tampered with by illegal users, resulting in the problem that the target information cannot be obtained by decrypting the ciphertext of the target information.

Description of drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. For those of ordinary skill, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of an information processing system provided by an embodiment of the present application;

2 is a schematic flowchart of an encryption method based on a correction amount provided by an embodiment of the present application;

3 is a schematic flowchart of an encryption method based on a correction amount provided by an embodiment of the present application;

4 is a schematic structural diagram of a correction amount-based encryption device provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of an electronic device provided by another embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

Blockchain is a new application mode of computer technology such as distributed data storage, point-to-point transmission (P2P transmission), consensus mechanism, encryption algorithm, etc. It is essentially a decentralized and highly transparent database; It consists of a series of transaction records (also known as blocks) that are connected and protected by cryptography. The distributed ledger connected by the blockchain allows multiple parties to effectively record transactions, and can permanently verify this transaction (non-tampering ). Among them, the consensus mechanism refers to the mathematical algorithm that realizes the establishment of trust between different nodes and the acquisition of rights and interests in the blockchain network; that is to say, the consensus mechanism is a mathematical algorithm recognized by all network nodes of the blockchain. This application utilizes the feature that the information in the blockchain cannot be tampered with. By encrypting the target information, the ciphertext of the target information is obtained, and the ciphertext of the target information is stored in the blockchain, so that the ciphertext of the target information can be avoided from being tampered with. Tampering, improve the security of target information.

This application can be used in digital medical scenarios, that is, the above-mentioned target information can refer to the patient's electronic information file, the patient's medical treatment information, etc. Encrypting and storing the encrypted data in the blockchain network is conducive to realizing medical informatization, remote medical data sharing, remote medical treatment, and improving the security of information in digital medical scenarios.

In order to facilitate the understanding of this solution, the information processing system of this solution is first introduced. As shown in Figure 1, the information processing system may include a blockchain network 10 and at least two terminals. In Figure 1, the information processing system includes two terminals as For example, they are terminal 20 and terminal 21, respectively.

The blockchain network is an end-to-end decentralized network composed of multiple node devices. The blockchain network in FIG. 1 includes multiple node devices 101 . Each node device can receive transaction data during normal work, and maintain the blockchain based on the received transaction data. In order to ensure the information exchange in the blockchain network, there can be a communication connection between each node device in the blockchain network, and data transmission can be performed between the node devices through the above communication connection. For example, when any node device in the blockchain network receives transaction data, other node devices in the blockchain network obtain the transaction data according to the consensus algorithm, and store the transaction data as the data in the blockchain, so that the region The data stored on all node devices in the blockchain network is consistent.

Among them, each node device in the blockchain network has its corresponding node ID, and each node device in the blockchain network can store the node IDs of other node devices in the blockchain network, so that Subsequently, according to the node identifiers of other node devices, the generated blocks are broadcast to other node devices in the blockchain network. Each node device can maintain a node ID list as shown in the following table, and store the node device name and node ID correspondingly in the node ID list. Wherein, the node identifier may be an IP (Internet Protocol, a protocol for interconnection between networks) address and any other information that can be used to identify the node device. In Table 1, only the IP address is used as an example for description.

Table 1:

节点名称node name	节点标识Node ID
节点设备1Node device 1	117.114.151.174117.114.151.174
节点设备2Node device 2	117.116.189.145117.116.189.145
……	……
节点设备NNode device N	119.123.789.258119.123.789.258

The terminal 20 and the terminal 21 can store the information in the blockchain network, and can also read the information from the blockchain network. Specifically, the terminal 20 and the terminal 21 can encrypt the target information to be processed, and encrypt the encrypted information of the target information. Alternatively, the terminal 20 and the terminal 21 can directly upload the target information to be processed to the blockchain network, and the target information is encrypted by the node device in the blockchain network, and the target information is encrypted. ciphertext storage.

Here, the above node device may specifically be an independent server, or a server cluster composed of several servers, or a cloud computing center, tablet computer, notebook computer, handheld computer, smart audio, mobile Internet device (MID, mobile internet device). )and many more. Both the terminal 20 and the terminal 21 can be computer devices, including mobile phones, tablet computers, notebook computers, handheld computers, smart speakers, POS (Point of sales, point of sale) machines, mobile Internet devices (MID, mobile Internet device), wearable A device (such as a smart watch, a smart bracelet, etc.), etc.; it may also refer to an independent server, a server cluster composed of several servers, or a cloud computing center.

Please refer to FIG. 2 , which is a schematic flowchart of an encryption method based on a correction amount provided by an embodiment of the present application. The embodiment of the present application is executed by an electronic device, and the electronic device may refer to a node device or a terminal in the above-mentioned information processing system. equipment, the encryption method based on the correction amount includes the following steps S101-S106.

S101. Acquire an objective function for describing information and target information to be processed.

The electronic device can acquire the target function used to describe the information and the target information to be processed. Here, the objective function may refer to a function corresponding to an elliptic curve, or of course, it may refer to a function corresponding to other curves; the target information may refer to transaction data, and the transaction data may refer to transaction amount, transaction time, etc.; or, the target Information can refer to the revenue data of a certain organization, such as turnover, number of shipments, number of purchases, and so on.

S102. Obtain block information corresponding to the block from the block chain network, and generate a correction amount for performing correction processing on the target information according to the block information.

Since the objective function can only be used to describe the information belonging to the finite field, that is to say, if the target information exceeds the finite field, the objective function cannot be directly used to describe the target information. That is, if the target information exceeds the finite field, the target information needs to be corrected so that the corrected target information belongs to the finite field. The finite field is determined according to the function type of the objective function. For example, if the objective function is a function corresponding to an elliptic curve with a length of 32 bytes, the finite field (marked as P) is 2^256-w, and w is a very small positive number; when the value corresponding to the target information is less than When P, it indicates that the target information belongs to the valid domain. Therefore, the electronic device can obtain the block information corresponding to the block from the block chain network, and generate a correction amount for correcting the target information according to the block information. The block information includes the block height and block generation. time and so on.

Optionally, the block information includes a block height, and the above-mentioned generating a correction amount for performing correction processing on the target information according to the block information includes: obtaining the block height corresponding to each block in the block chain network. Obtain the maximum block height from , as the target block height, count the number of pieces of information stored in the block corresponding to the height of the target block from the blockchain network; perform random operations on the number of pieces of information to obtain a random number , and the random number is determined as a correction amount for performing correction processing on the target information.

The computer equipment can generate the correction amount used to correct the target information according to the block height. Specifically, the maximum block height can be obtained from the block heights corresponding to each block in the blockchain network as the target block height. , count the number of pieces of information stored in the block corresponding to the height of the target block from the blockchain network, use a random algorithm to perform random operations on the number of pieces of information to obtain a random number, and determine the random number as the The correction amount for the correction processing of the target information. The random algorithm here includes, but is not limited to: Las Vegas algorithm, Monte Carlo algorithm, Sherwood algorithm, numerical probability algorithm and so on.

Optionally, the block information includes a block generation time, and generating a correction amount for performing correction processing on the target information according to the block information includes: acquiring the block corresponding to each block in the block chain network. The sum of the block generation times is the sum of the time; the earliest block generation time is determined from the block generation times corresponding to each block in the blockchain network as the target block generation time; according to the target block generation time A remainder operation is performed on the time sum to obtain a first numerical value, and the first numerical value is determined as a correction amount for performing correction processing on the target information.

The computer device can generate a correction amount for performing correction processing on the target information according to the block generation time, and specifically, obtain the sum of the block generation times corresponding to each block in the blockchain network, and obtain the time sum; Obtain the block generation time corresponding to each block in the blockchain network and determine the earliest block generation time as the target block generation time, that is, the target block generation time is the earliest generated block in the blockchain network. generation time. A remainder operation is performed on the time sum according to the target block generation time to obtain a first numerical value, and the first numerical value is determined as a correction amount for performing correction processing on the target information.

S103 , performing correction processing on the target information by using the correction amount to obtain corrected target information. The electronic device can use the correction amount to perform correction processing on the target information to obtain corrected target information. Specifically, the correction amount can be used to perform correction processing on the value of the target information to obtain corrected target information. The correction processing may refer to a modulo operation, a remainder operation, a subtraction operation, and the like. Correcting the target information by the correction amount can effectively improve the success rate of using the objective function to describe the target information.

S104. Acquire coordinate information corresponding to the corrected target information according to the target function.

The electronic device can use the coordinate points on the curve of the objective function to describe the corrected target information. Specifically, the corrected target information can be mapped to the first coordinate of the target point on the curve of the objective function, and according to the first coordinate of the target point. The coordinates and the objective function obtain the second coordinate of the target point, and use the first coordinate and the second coordinate as coordinate information corresponding to the corrected target information. The first coordinate may refer to the X coordinate, and the second coordinate may refer to the Y coordinate; or, the first coordinate may refer to the Y coordinate, and the second coordinate may refer to the X coordinate.

S105. Encrypt the coordinate information corresponding to the corrected target information to obtain the ciphertext of the coordinate information corresponding to the corrected target information.

S106. Determine the ciphertext of the coordinate information corresponding to the corrected target information as the ciphertext of the target information, and store the ciphertext of the target information in the blockchain network.

The electronic device can use an encryption algorithm to encrypt the coordinate information corresponding to the revised target information, and obtain the ciphertext of the coordinate information corresponding to the revised target information. The encryption algorithm can include but is not limited to the Elgamal algorithm (an asymmetric encryption algorithm). ), Rabin algorithm (an asymmetric encryption algorithm), Diffie-Hellman algorithm (an asymmetric encryption algorithm), ECC algorithm (elliptic curve encryption algorithm). The ciphertext of the coordinate information corresponding to the corrected target information is determined as the ciphertext of the target information, and the ciphertext of the target information is stored in the blockchain network; it can prevent the target information from being stored locally in the terminal, resulting in the target information being destroyed. Tampering, improve the security of target information.

In the present application, by obtaining the block information of the block pair from the block chain network, generating the correction amount used for the correction processing of the target information according to the block information, and using the correction amount to perform the correction processing on the target information, the correction is obtained. The obtained target information can effectively improve the success rate of using the objective function to describe the target information. Further, by obtaining the coordinate information corresponding to the modified target information according to the objective function, and encrypting the coordinate information corresponding to the modified target information, the ciphertext of the coordinate information corresponding to the modified target information is obtained, and the coordinate information corresponding to the modified target information is obtained. The ciphertext of the coordinate information corresponding to the corrected target information is determined as the ciphertext of the target information, and the ciphertext of the target information is stored in the blockchain network. That is, by encrypting the coordinate information of the corrected target information, the security of the target information can be improved; by storing the ciphertext of the coordinate information of the corrected target information in the blockchain network, the ciphertext of the target information can be avoided. It is tampered with by illegal users, resulting in the problem that the target information cannot be obtained by decrypting the ciphertext of the target information.

Please refer to FIG. 3 , which is a schematic flowchart of another correction amount-based encryption method provided by an embodiment of the present application. The embodiment of the present application is executed by an electronic device. The correction amount-based encryption method includes the following steps S201 to S205 .

S201. Acquire an objective function for describing information and target information to be processed.

S202. Obtain block information corresponding to the block from the block chain network, and generate a correction amount for performing correction processing on the target information according to the block information.

S203. Determine a second value corresponding to the target information according to the information type of the target information.

S204: Obtain the sum between the second numerical value and the correction amount to obtain a third numerical value.

S205. Acquire a function parameter of the objective function, and generate a correction weight according to the function parameter.

S206. Perform a modulo operation on the third numerical value according to the correction weight to obtain a fourth numerical value, and determine the fourth numerical value as the corrected target information.

In steps S203 to S206, the electronic device may use the correction amount to perform correction processing on the target information. Specifically, the second value corresponding to the target information may be determined according to the information type of the target information, and the difference between the second value and the correction amount may be calculated. The sum of the three values is obtained. Obtain the function parameters of the objective function, and generate the correction weight according to the function parameters. If the function parameter is the length of the curve of the objective function, if the length is 32 bytes, that is, 256 bits, the correction weight can be 2^256. Modulo operation can be performed on the third numerical value according to the correction weight to obtain a fourth numerical value, and the fourth numerical value can be determined as the corrected target information. For example, the following formula (1) can be used to express the corrected target information.

Among them, in formula (1),

is the corrected target information, offset is the correction amount, M is the second value corresponding to the target information, and mod is the modulo operator.

Optionally, the above-mentioned determining the second value corresponding to the target information according to the information type of the target information includes: if the information type of the target information is a non-numerical type, encoding the target information to obtain the encoded target information. , the encoded target information is determined as the second value corresponding to the target information; if the information type of the target information is a value type, the target information is determined as the second value corresponding to the target information.

The computer equipment can obtain the information type of the target information. The information type of the target information includes a numerical type and a non-numerical type. at least one of the composition. If the information type of the target information is a non-numerical type, an encoding algorithm is used to numerically encode the target information to obtain the encoded target information, and the encoded target information is used as the second value corresponding to the target information; here the encoding algorithm It can include: pulse code modulation algorithm (Pulse Code Modulation, PCM), non-return zero code algorithm (Non Return Zero, NRZ) and Manchester coding algorithm and so on. If the information type of the target information is a numerical type, the target information may be determined as a second numerical value corresponding to the target information.

S207: Acquire coordinate information corresponding to the corrected target information according to the target function.

S208: Encrypt the coordinate information corresponding to the corrected target information to obtain the ciphertext of the coordinate information corresponding to the corrected target information.

Optionally, encrypting the coordinate information corresponding to the corrected target information above to obtain the ciphertext of the coordinate information corresponding to the corrected target information includes: obtaining attribute information of the terminal to which the target information belongs, and the target information. The key corresponding to the information, the attribute information of the terminal includes at least one of the terminal identifier of the terminal, the password generated by the terminal, and the user information corresponding to the terminal; the private key of the terminal is generated according to the attribute information of the terminal; according to The private key and the key corresponding to the target information are encrypted with the coordinate information corresponding to the revised target information, and the ciphertext of the coordinate information corresponding to the revised target information is obtained.

The electronic device can obtain the key corresponding to the target information, and the key corresponding to the target information can be generated according to the attribute information of the target information. The attribute information of the target information includes the organization to which the target information belongs, the generation time of the target information, and the information of the target information. length, etc. Further, attribute information of the terminal to which the target information belongs can be obtained, and the attribute information of the terminal includes at least one of a terminal identifier of the terminal, a password generated by the terminal, and user information corresponding to the terminal, and the terminal identifier may refer to the terminal. At least one of the IP address, MAC address, serial number, etc., user information may refer to the user account, user phone number, etc.; the password generated by the terminal may be randomly generated, or generated according to certain rules. A random number is generated according to the attribute information of the terminal, and the random number is filled to obtain the private key of the terminal. The private key of the terminal may include 256 bits (ie bits). Then, according to the private key and the key corresponding to the target information, the coordinate information corresponding to the revised target information can be encrypted to obtain the ciphertext of the coordinate information corresponding to the revised target information; Encrypting the coordinate information corresponding to the corrected target information by encrypting the key corresponding to the information can improve the security of the target information.

Optionally, the attribute information of the target information includes the generation time of the target information, and obtaining the key corresponding to the target information according to the attribute information of the target information includes: performing a hash operation on the generation time of the target information to obtain the first hash. value, perform a hash operation on the first hash value to obtain a second hash value, and determine the second hash value as the key corresponding to the target information. Optionally, the attribute information of the target information includes the information length of the target information, and obtaining the key corresponding to the target information according to the attribute information of the target information includes: using a random algorithm to perform a random operation on the information length of the target information to obtain the corresponding information length. Perform a hash operation on the random number corresponding to the length of the information to obtain a hash value corresponding to the random number; perform a hash operation on the hash value corresponding to the random number to obtain the key corresponding to the target information.

Optionally, according to the private key and the key corresponding to the target information, the coordinate information corresponding to the revised target information is encrypted to obtain the ciphertext of the coordinate information corresponding to the revised target information, including: obtaining The base point coordinate of the curve of the objective function; obtain the product of the base point coordinate and the private key of the terminal to obtain the candidate coordinate; encrypt the candidate coordinate according to the key corresponding to the target information to obtain the ciphertext of the candidate coordinate; The coordinate information corresponding to the corrected target information is fused with the ciphertext of the candidate coordinates to obtain the ciphertext of the coordinate information corresponding to the corrected target information.

The electronic device can obtain the base point coordinates of the curve of the objective function, and calculate the product of the G point coordinates and the private key of the terminal to obtain candidate coordinates, and encrypt the candidate coordinates according to the key corresponding to each piece of sub-information to obtain the The ciphertext of the candidate coordinates; the coordinate information corresponding to the modified target information is fused with the ciphertext of the corresponding candidate coordinates to obtain the ciphertext of the coordinate information corresponding to the modified target information.

Optionally, the ciphertext of the coordinate information corresponding to the corrected target information may be expressed by the following formula (2).

P _C =P _M +k*H (2)

In _formula (2), PC represents the ciphertext of the coordinate information corresponding to the corrected target information, k represents the key of the target information, and H is the candidate coordinate. P _M represents the coordinate information corresponding to the corrected target information, and k*H represents the ciphertext of the candidate coordinate information; the candidate coordinate can be represented by the following formula (3).

H=h*G (3)

In formula (3), h represents the private key of the terminal, and G represents the base point coordinates of the curve of the objective function, which can be represented as (x _g , y _g ).

S209. Determine the ciphertext of the coordinate information corresponding to the corrected target information as the ciphertext of the target information, and store the ciphertext of the target information in the blockchain network.

Optionally, the electronic device can receive the terminal's acquisition request for the target information, and verify whether the terminal has the authority to acquire the target information according to the acquisition request, and if the terminal has the authority to acquire the target information, read the target information from the blockchain network. The ciphertext of the information (that is, the ciphertext of the coordinate information corresponding to the revised target information), decrypt the ciphertext of the coordinate information corresponding to the revised target information, and obtain the coordinate information corresponding to the revised target information; according to the objective function and the coordinate information corresponding to the corrected target information to determine the corrected target information; obtain the correction amount corresponding to the target information from the blockchain network, determine the target information according to the correction amount and the corrected target information, and return the target information to to the terminal.

When the target information needs to be read, the ciphertext of the target information can be read from the blockchain network, the ciphertext of the target information can be decrypted, the target information can be obtained, and the target information can be returned to the terminal to achieve information sharing. Specifically, the electronic device can receive the terminal's acquisition request for the target information, the acquisition request can include attribute information corresponding to the terminal, the information identifier of the acquired target information, etc.; and verify whether the terminal has the right to acquire the target information according to the terminal's attribute information. If it is determined that the terminal does not have the right to acquire the target information, the target information is refused to be returned to the terminal. If it is determined that the terminal has the authority to obtain the target information, the ciphertext of the target information (that is, the ciphertext of the coordinate information corresponding to the corrected target information) can be read from the blockchain network according to the information identifier of the target information. The ciphertext of the coordinate information corresponding to the target information is decrypted to obtain the coordinate information corresponding to the revised target information; the revised target information is determined according to the objective function and the coordinate information corresponding to the revised target information; obtained from the blockchain network The correction amount corresponding to the target information is determined according to the correction amount and the corrected target information, and the target information is returned to the terminal. By verifying the authority of the terminal to obtain the target information, the security of the target information can be improved, and the illegal terminal can be prevented from obtaining the target information.

Please refer to FIG. 4 , which is a schematic structural diagram of a correction amount-based encryption device provided by an embodiment of the present application. As shown in FIG. 4 , the blockchain-based information device in this embodiment includes:

Obtaining module 401, for obtaining the target function for describing information, and target information to be processed;

The generation module 402 is used to obtain the block information corresponding to the block from the block chain network, and according to the block information, generate a correction amount for performing correction processing on the target information;

a processing module 403, configured to perform correction processing on the target information by using the correction amount to obtain corrected target information;

The obtaining module 401 is further configured to obtain coordinate information corresponding to the modified target information according to the target function;

An encryption module 404, configured to encrypt the coordinate information corresponding to the modified target information to obtain the ciphertext of the coordinate information corresponding to the modified target information;

The determining module 405 is configured to determine the ciphertext of the coordinate information corresponding to the corrected target information as the ciphertext of the target information, and store the ciphertext of the target information in the blockchain network.

Optionally, the block information includes a block height, and the generating module 402 generates a correction amount for performing correction processing on the target information according to the block information, including:

Obtain the maximum block height from the block heights corresponding to each block in the blockchain network as the target block height;

Count the number of pieces of information stored in the block corresponding to the height of the target block from the blockchain network;

A random operation is performed on the number of pieces of information to obtain a random number, and the random number is determined as a correction amount for performing correction processing on the target information.

Optionally, the block information includes a block generation time, and the generation module 402 generates a correction amount for performing correction processing on the target information according to the block information, including:

Obtain the sum of the block generation times corresponding to each block in the blockchain network, and obtain the time sum;

Determine the earliest block generation time from the block generation time corresponding to each block in the blockchain network as the target block generation time;

A remainder operation is performed on the time sum according to the target block generation time to obtain a first numerical value, and the first numerical value is determined as a correction amount for performing correction processing on the target information.

Optionally, the processing module 403 uses the correction amount to perform correction processing on the target information to obtain corrected target information, including:

Determine the second value corresponding to the target information according to the information type of the target information;

obtaining the sum between the second numerical value and the correction amount to obtain a third numerical value;

Obtain the function parameters of the objective function, and generate a correction weight according to the function parameters;

A modulo operation is performed on the third numerical value according to the correction weight to obtain a fourth numerical value, and the fourth numerical value is determined as the corrected target information.

Optionally, the processing module 403 determines the second value corresponding to the target information according to the information type of the target information, including:

If the information type of the target information is a non-numerical type, then the target information is encoded to obtain the encoded target information, and the encoded target information is determined as the second numerical value corresponding to the target information;

If the information type of the target information is a numeric type, the target information is determined as a second value corresponding to the target information.

Optionally, the encryption module 404 encrypts the coordinate information corresponding to the revised target information, and obtains the ciphertext of the coordinate information corresponding to the revised target information, including:

Obtain attribute information of the terminal to which the target information belongs, and a key corresponding to the target information, where the attribute information of the terminal includes the terminal identifier of the terminal, the password generated by the terminal, and the user information corresponding to the terminal. at least one of;

generating the private key of the terminal according to the attribute information of the terminal;

According to the private key and the key corresponding to the target information, the coordinate information corresponding to the modified target information is encrypted to obtain the ciphertext of the coordinate information corresponding to the modified target information.

Optionally, the encryption module 404 encrypts the coordinate information corresponding to the revised target information according to the private key and the key corresponding to the target information to obtain the coordinates corresponding to the revised target information. Encrypted text of information, including:

Obtain the base point coordinates of the curve of the objective function;

Obtain the product of the base point coordinates and the private key of the terminal to obtain candidate coordinates;

Encrypt the candidate coordinates according to the key corresponding to the target information to obtain the ciphertext of the candidate coordinates;

The coordinate information corresponding to the corrected target information and the ciphertext of the candidate coordinates are fused to obtain the ciphertext of the coordinate information corresponding to the corrected target information.

Please refer to FIG. 5 , which is a schematic structural diagram of an electronic device provided by an embodiment of the present application. The electronic device may include a processor, which is suitable for implementing one or more instructions; and a computer-readable storage medium, the computer-readable storage medium. The medium may store one or more instructions suitable for being loaded by a processor and performing the above-described method. Optionally, the electronic device may further include a memory. Further optionally, the electronic device may further include at least one of an input device and an output device. For example, the electronic device in this embodiment as shown in FIG. 5 may include: one or more processors 21 ; one or more input devices 22 , one or more output devices 23 and a memory 24 . The above-mentioned processor 21 , input device 22 , output device 23 , and memory 24 are connected through a bus 25 .

The processor 21 can be a central processing unit (Central Processing Unit, CPU), and the processor can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC) ), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The input device 22 may include a touch panel, a fingerprint sensor (used to collect the user's fingerprint information and fingerprint direction information), a microphone, etc., and the output device 23 may include a display (LCD, etc.), a speaker, etc., and the output device 23 may output corrections The processed data table.

The memory 24 may include read only memory and random access memory and provides instructions and data to the processor 21 . A portion of the memory 24 may also include non-volatile random access memory, the memory 24 for storing a computer program including program instructions, and the processor 21 for executing the program instructions stored in the memory 24 for executing a A modifier-based encryption method that is used to do the following:

The ciphertext of the coordinate information corresponding to the modified target information is determined as the ciphertext of the target information, and the ciphertext of the target information is stored in the blockchain network.

Optionally, the block information includes block height, and the processor 21 is configured to execute program instructions stored in the memory 24 to perform the following operations:

Generating, according to the block information, a correction amount for performing correction processing on the target information, including:

Optionally, the block information includes block generation time, and the processor 21 is used to execute the program instructions stored in the memory 24 to perform the following operations:

Optionally, the processor 21 is configured to execute program instructions stored in the memory 24 to perform the following operations:

If the information type of the target information is a non-numerical type, then the target information is encoded to obtain encoded target information, and the encoded target information is determined as the second value corresponding to the target information;

Obtain the base point coordinates of the curve of the objective function;

Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and the computer program includes program instructions, and when the program instructions are executed by a processor, FIG. 2 and FIG. 2 are implemented. 3. The encryption method based on the correction amount shown in the embodiment.

Optionally, the storage medium involved in the present application may be a readable storage medium, and the storage medium involved in the present application, such as a computer-readable storage medium, may be non-volatile or volatile.

The computer-readable storage medium may be an internal storage unit of the electronic device described in any of the foregoing embodiments, such as a hard disk or a memory of the electronic device. The computer-readable storage medium may also be an external storage device of the electronic device, such as a plug-in hard disk equipped on the electronic device, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) ) card, flash memory card (FlashCard) and so on. Further, the computer-readable storage medium may also include both an internal storage unit of the electronic device and an external storage device. The computer-readable storage medium is used to store the computer program and other programs and data required by the electronic device. The computer-readable storage medium can also be used to temporarily store data that has been or will be output.

As an example, the above-described computer-readable storage medium may be deployed to execute on one computer device, or be deployed to execute on multiple computer devices located at one site, or, alternatively, distributed in multiple sites and interconnected by a communication network. Executed on a single computer device, a plurality of computer devices distributed in multiple locations and interconnected by a communication network can form a blockchain network.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. Interchangeability, the above description has generally described the components and steps of each example in terms of function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application. Those skilled in the art can clearly understand that, for the convenience and brevity of description, for the specific working process of the electronic device and unit described above, reference may be made to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed electronic devices and methods may be implemented in other manners. For example, the device embodiments described above are illustrative, for example, the division of the units may be a logical function division, and there may be other division methods in actual implementation, for example, multiple units or components may be combined or Integration into another system, or some features can be ignored, or not implemented.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalents within the technical scope disclosed in the present application. Modifications or substitutions shall be covered by the protection scope of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A correction-based encryption method comprising:

Obtain the objective function used to describe the information, and the target information to be processed;

Obtain block information corresponding to a block from the block chain network, and generate a correction amount for performing correction processing on the target information according to the block information;

Correction processing is performed on the target information by using the correction amount to obtain the corrected target information;

Obtain coordinate information corresponding to the modified target information according to the objective function;

Encrypting the coordinate information corresponding to the modified target information to obtain the ciphertext of the coordinate information corresponding to the modified target information;

The ciphertext of the coordinate information corresponding to the corrected target information is determined as the ciphertext of the target information, and the ciphertext of the target information is stored in the blockchain network.
The method according to claim 1, wherein the block information includes a block height, and the generating a correction amount for performing correction processing on the target information according to the block information comprises:

Obtain the maximum block height from the block heights corresponding to each block in the blockchain network as the target block height;

Count the number of pieces of information stored in the block corresponding to the height of the target block from the blockchain network;

A random operation is performed on the number of pieces of information to obtain a random number, and the random number is determined as a correction amount for performing correction processing on the target information.
The method according to claim 1, wherein the block information includes a block generation time, and the generating a correction amount for performing correction processing on the target information according to the block information comprises:

Obtain the sum of the block generation times corresponding to each block in the blockchain network, and obtain the time sum;

Determine the earliest block generation time from the block generation time corresponding to each block in the blockchain network as the target block generation time;

A remainder operation is performed on the time sum according to the target block generation time to obtain a first numerical value, and the first numerical value is determined as a correction amount for performing correction processing on the target information.
The method according to claim 1, wherein the modifying processing of the target information by using the correction amount to obtain the modified target information comprises:

Determine the second value corresponding to the target information according to the information type of the target information;

obtaining the sum between the second numerical value and the correction amount to obtain a third numerical value;

Obtain the function parameters of the objective function, and generate a correction weight according to the function parameters;

A modulo operation is performed on the third numerical value according to the correction weight to obtain a fourth numerical value, and the fourth numerical value is determined as the corrected target information.
The method according to claim 1, wherein the determining the second value corresponding to the target information according to the information type of the target information comprises:

If the information type of the target information is a non-numerical type, then the target information is encoded to obtain encoded target information, and the encoded target information is determined as the second value corresponding to the target information;

If the information type of the target information is a numeric type, the target information is determined as a second value corresponding to the target information.
The method according to claim 1, wherein the encrypting the coordinate information corresponding to the modified target information to obtain the ciphertext of the coordinate information corresponding to the modified target information, comprising:

Obtain attribute information of the terminal to which the target information belongs, and a key corresponding to the target information, where the attribute information of the terminal includes the terminal identifier of the terminal, the password generated by the terminal, and the user information corresponding to the terminal. at least one of;

generating the private key of the terminal according to the attribute information of the terminal;

According to the private key and the key corresponding to the target information, the coordinate information corresponding to the modified target information is encrypted to obtain the ciphertext of the coordinate information corresponding to the modified target information.
The method according to claim 6, wherein the coordinate information corresponding to the revised target information is encrypted according to the private key and the key corresponding to the target information to obtain the revised target The ciphertext of the coordinate information corresponding to the information, including:

Obtain the base point coordinates of the curve of the objective function;

Obtain the product of the base point coordinates and the private key of the terminal to obtain candidate coordinates;

Encrypt the candidate coordinates according to the key corresponding to the target information to obtain the ciphertext of the candidate coordinates;

The coordinate information corresponding to the corrected target information and the ciphertext of the candidate coordinates are fused to obtain the ciphertext of the coordinate information corresponding to the corrected target information.
An encryption device based on correction amount, comprising:

The acquisition module is used to acquire the target function used to describe the information, and the target information to be processed;

A generating module, configured to obtain block information corresponding to a block from the block chain network, and generate a correction amount for performing correction processing on the target information according to the block information;

a processing module, configured to perform correction processing on the target information by using the correction amount to obtain the corrected target information;

The obtaining module is further configured to obtain coordinate information corresponding to the modified target information according to the target function;

an encryption module, configured to encrypt the coordinate information corresponding to the modified target information to obtain the ciphertext of the coordinate information corresponding to the modified target information;

A determination module, configured to determine the ciphertext of the coordinate information corresponding to the corrected target information as the ciphertext of the target information, and store the ciphertext of the target information in the blockchain network.
An electronic device comprising:

a processor adapted to implement one or more instructions; and,

A computer-readable storage medium having stored thereon one or more instructions adapted to be loaded by the processor and perform the following methods:

Obtain the objective function used to describe the information, and the target information to be processed;

Obtain block information corresponding to a block from the block chain network, and generate a correction amount for performing correction processing on the target information according to the block information;

Correction processing is performed on the target information by using the correction amount to obtain the corrected target information;

Obtain coordinate information corresponding to the modified target information according to the objective function;

Encrypting the coordinate information corresponding to the modified target information to obtain the ciphertext of the coordinate information corresponding to the modified target information;

The ciphertext of the coordinate information corresponding to the corrected target information is determined as the ciphertext of the target information, and the ciphertext of the target information is stored in the blockchain network.
The electronic device according to claim 9, wherein the block information includes a block height, and performing the generating of the correction amount for performing correction processing on the target information according to the block information comprises:

Obtain the maximum block height from the block heights corresponding to each block in the blockchain network as the target block height;

Count the number of pieces of information stored in the block corresponding to the height of the target block from the blockchain network;

A random operation is performed on the number of pieces of information to obtain a random number, and the random number is determined as a correction amount for performing correction processing on the target information.
The electronic device according to claim 9, wherein the block information includes a block generation time, and performing the generating of the correction amount for performing correction processing on the target information according to the block information comprises:

Obtain the sum of the block generation times corresponding to each block in the blockchain network, and obtain the time sum;

Determine the earliest block generation time from the block generation time corresponding to each block in the blockchain network as the target block generation time;

A remainder operation is performed on the time sum according to the target block generation time to obtain a first numerical value, and the first numerical value is determined as a correction amount for performing correction processing on the target information.
The electronic device according to claim 9, wherein performing the correction process on the target information by using the correction amount to obtain the corrected target information, comprising:

Determine the second value corresponding to the target information according to the information type of the target information;

obtaining the sum between the second numerical value and the correction amount to obtain a third numerical value;

Obtain the function parameters of the objective function, and generate a correction weight according to the function parameters;

A modulo operation is performed on the third numerical value according to the correction weight to obtain a fourth numerical value, and the fourth numerical value is determined as the corrected target information.
The electronic device according to claim 9, wherein the encryption of the coordinate information corresponding to the modified target information is performed to obtain the ciphertext of the coordinate information corresponding to the modified target information, comprising:

Obtain attribute information of the terminal to which the target information belongs, and a key corresponding to the target information, where the attribute information of the terminal includes the terminal identifier of the terminal, the password generated by the terminal, and the user information corresponding to the terminal. at least one of;

generating the private key of the terminal according to the attribute information of the terminal;

According to the private key and the key corresponding to the target information, the coordinate information corresponding to the modified target information is encrypted to obtain the ciphertext of the coordinate information corresponding to the modified target information.
The electronic device according to claim 13, wherein the coordinate information corresponding to the modified target information is encrypted by executing the encryption according to the private key and the key corresponding to the target information, to obtain the modified target information. The ciphertext of the coordinate information corresponding to the target information, including:

Obtain the base point coordinates of the curve of the objective function;

Obtain the product of the base point coordinates and the private key of the terminal to obtain candidate coordinates;

Encrypt the candidate coordinates according to the key corresponding to the target information to obtain the ciphertext of the candidate coordinates;

The coordinate information corresponding to the corrected target information and the ciphertext of the candidate coordinates are fused to obtain the ciphertext of the coordinate information corresponding to the corrected target information.
A computer-readable storage medium, wherein the computer-readable storage medium stores one or more instructions adapted to be loaded by a processor and execute the following method:

Obtain the objective function used to describe the information, and the target information to be processed;

Obtain block information corresponding to a block from the block chain network, and generate a correction amount for performing correction processing on the target information according to the block information;

Correction processing is performed on the target information by using the correction amount to obtain the corrected target information;

Obtain coordinate information corresponding to the modified target information according to the objective function;

Encrypting the coordinate information corresponding to the modified target information to obtain the ciphertext of the coordinate information corresponding to the modified target information;

The ciphertext of the coordinate information corresponding to the corrected target information is determined as the ciphertext of the target information, and the ciphertext of the target information is stored in the blockchain network.
The computer-readable storage medium of claim 15, wherein the block information includes a block height, and performing the generating of the correction amount for performing correction processing on the target information according to the block information comprises: :

Obtain the maximum block height from the block heights corresponding to each block in the blockchain network as the target block height;

Count the number of pieces of information stored in the block corresponding to the height of the target block from the blockchain network;

A random operation is performed on the number of pieces of information to obtain a random number, and the random number is determined as a correction amount for performing correction processing on the target information.
The computer-readable storage medium according to claim 15, wherein the block information includes a block generation time, and the generation of a correction amount for performing correction processing on the target information according to the block information is performed, include:

Obtain the sum of the block generation times corresponding to each block in the blockchain network, and obtain the time sum;

Determine the earliest block generation time from the block generation time corresponding to each block in the blockchain network as the target block generation time;

A remainder operation is performed on the time sum according to the target block generation time to obtain a first numerical value, and the first numerical value is determined as a correction amount for performing correction processing on the target information.
The computer-readable storage medium according to claim 15, wherein performing the correction process on the target information by using the correction amount to obtain the corrected target information comprises:

Determine the second value corresponding to the target information according to the information type of the target information;

obtaining the sum between the second numerical value and the correction amount to obtain a third numerical value;

Obtain the function parameters of the objective function, and generate a correction weight according to the function parameters;

A modulo operation is performed on the third numerical value according to the correction weight to obtain a fourth numerical value, and the fourth numerical value is determined as the corrected target information.
The computer-readable storage medium according to claim 15, wherein performing the encryption of the coordinate information corresponding to the modified target information to obtain the ciphertext of the coordinate information corresponding to the modified target information, comprising: :

Obtain attribute information of the terminal to which the target information belongs, and a key corresponding to the target information, where the attribute information of the terminal includes the terminal identifier of the terminal, the password generated by the terminal, and the user information corresponding to the terminal. at least one of;

generating the private key of the terminal according to the attribute information of the terminal;

According to the private key and the key corresponding to the target information, the coordinate information corresponding to the modified target information is encrypted to obtain the ciphertext of the coordinate information corresponding to the modified target information.
The computer-readable storage medium according to claim 19, wherein the coordinate information corresponding to the modified target information is encrypted according to the private key and the key corresponding to the target information to obtain the The ciphertext of the coordinate information corresponding to the corrected target information, including:

Obtain the base point coordinates of the curve of the objective function;

Obtain the product of the base point coordinates and the private key of the terminal to obtain candidate coordinates;

Encrypt the candidate coordinates according to the key corresponding to the target information to obtain the ciphertext of the candidate coordinates;

The coordinate information corresponding to the corrected target information and the ciphertext of the candidate coordinates are fused to obtain the ciphertext of the coordinate information corresponding to the corrected target information.