WO2022068237A1

WO2022068237A1 - Information processing method and apparatus for generating key on the basis of attribute of information, and device

Info

Publication number: WO2022068237A1
Application number: PCT/CN2021/097120
Authority: WO
Inventors: 贾牧; 陆陈一帆; 谢丹力
Original assignee: 平安科技（深圳）有限公司
Priority date: 2020-09-29
Filing date: 2021-05-31
Publication date: 2022-04-07
Also published as: CN112202554B; CN112202554A

Abstract

An information processing method and apparatus for generating a key on the basis of attribute of information, and a device. Said method comprises: acquiring a target function for describing information and attribute information of each piece of sub-information in target information to be processed (S101); generating a key of each piece of sub-information according to the attribute information of each piece of sub-information (S102); acquiring a first random number corresponding to each piece of sub-information, and adjusting each piece of sub-information according to the first random number, so as to obtain each piece of adjusted sub-information (S103); according to the target function and each piece of adjusted sub-information, acquiring coordinate information corresponding to each piece of sub-information (S104); encrypting the coordinate information of each piece of sub-information by using the key of each piece of sub-information, so as to obtain a ciphertext of the coordinate information (S105); and determining the ciphertext of the coordinate information corresponding to each piece of sub-information as a ciphertext of the target information, and storing the ciphertext of the target information into a block chain network (S106). The invention improves the security of information.

Description

Information processing method, device and device for generating key based on information attribute

This application claims the priority of the Chinese patent application filed on September 29, 2020 with the application number 202011054352.7 and the title of the invention is "information processing method, device and equipment for generating keys based on information attributes", all of which are The contents are incorporated herein by reference.

technical field

The present application relates to the field of blockchain technology, and in particular, to an information processing method, apparatus and device for generating keys based on attributes of information.

Background technique

In this era of rapid network development, more and more information is interacted and stored through the network. The inventor realized that the existing information storage method is generally local storage of the terminal. For example, the medical platform will use the terminal to store the medical record information, patient information and other information of each patient, and this information storage method has great risks. , illegal terminals can easily obtain locally stored information, resulting in information leakage, and illegal users can tamper with locally stored information, resulting in low information security, and when the local storage fails, the information cannot be retrieved , resulting in losses. Therefore, how to ensure the security of information in the process of information storage and prevent information leakage is an urgent problem to be solved.

SUMMARY OF THE INVENTION

The embodiments of the present application provide an information processing method, device, and device for generating a key based on an attribute of the information, which can encrypt information, improve information security, and prevent information leakage.

On the one hand, an embodiment of the present application provides an information processing method for generating a key based on an attribute of the information, including:

Obtain the objective function used to describe the information, and the attribute information of each piece of sub-information in the target information to be processed, the target information includes at least two pieces of sub-information, and the attribute information of each piece of sub-information includes the institution to which each piece of sub-information belongs, the At least one of the generation address of the piece of sub-information and the data type of each piece of sub-information;

Generate a key corresponding to each piece of sub-information according to the attribute information of each piece of sub-information;

Obtain the first random number corresponding to each piece of sub-information, and adjust each piece of sub-information according to the first random number to obtain each piece of adjusted sub-information;

According to the objective function and each piece of adjusted sub-information, obtain coordinate information corresponding to each of the at least two pieces of sub-information;

Encrypting the coordinate information of the corresponding sub-information in the at least two pieces of sub-information by using the key corresponding to each sub-information to obtain the ciphertext of the coordinate information corresponding to each sub-information;

The ciphertext of the coordinate information corresponding to each piece of sub-information is determined as the ciphertext of the target information, and the ciphertext of the target information is stored in the blockchain network.

On the one hand, an embodiment of the present application provides an information processing apparatus for generating a key based on attributes of information, including:

A function acquisition module, used for acquiring an objective function for describing information, and attribute information of each piece of sub-information in the target information to be processed, the target information including at least two pieces of sub-information, and the attribute information of each piece of sub-information including the each piece of sub-information At least one of the organization to which it belongs, the generation address of each piece of sub-information, and the data type of each piece of sub-information;

a key generation module for generating a key corresponding to each piece of sub-information according to the attribute information of each piece of sub-information;

an information adjustment module, configured to obtain a first random number corresponding to each piece of sub-information, adjust each piece of sub-information according to the first random number, and obtain each piece of adjusted sub-information;

a coordinate obtaining module, configured to obtain coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information according to the objective function and each piece of adjusted sub-information;

an information encryption module, configured to encrypt the coordinate information of the corresponding sub-information in the at least two pieces of sub-information by using the key corresponding to each sub-information, and obtain the ciphertext of the coordinate information corresponding to each sub-information;

The information storage module is configured to determine the ciphertext of the coordinate information corresponding to each piece of sub-information as the ciphertext of the target information, and store the ciphertext of the target information in the blockchain network.

One aspect of the present application provides a computer device, including: a processor, a memory, and a network interface;

The above-mentioned processor is connected to a memory and a network interface, wherein the network interface is used to provide a data communication function, the above-mentioned memory is used to store a computer program, and the above-mentioned processor is used to call the above-mentioned computer program to execute the following method:

Obtain the objective function used to describe the information, and attribute information of each piece of sub-information in the target information to be processed, where the target information includes at least two pieces of sub-information, and the attribute information of each piece of sub-information includes the institution to which each piece of sub-information belongs , at least one of the generation address of each piece of sub-information and the data type of each piece of sub-information;

obtaining a first random number corresponding to each piece of sub-information, and adjusting each piece of sub-information according to the first random number to obtain each piece of adjusted sub-information;

According to the objective function and each piece of adjusted sub-information, obtain coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information;

Using the key corresponding to each piece of sub-information, encrypt the coordinate information of the corresponding sub-information in the at least two pieces of sub-information, and obtain the ciphertext of the coordinate information corresponding to each of the sub-information;

An aspect of an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, the computer program includes program instructions, and when executed by a processor, the program instructions cause the processor to execute the following method :

In the embodiment of the present application, by storing the ciphertext information of the target information in the blockchain network, the security of the information can be improved based on the characteristics that the blockchain cannot be tampered with and is not easily lost; In the blockchain network, the resource occupation of the local storage space of the terminal can be reduced.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic flowchart of an information processing method for generating a key based on an attribute of information provided by an embodiment of the present application;

2 is a schematic flowchart of an information processing method for generating a key based on an attribute of information provided by an embodiment of the present application;

3 is a schematic diagram of the composition and structure of an information processing apparatus for generating a key based on an attribute of information provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a computer device provided by an 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 only a part of the embodiments of the present application, but 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.

The technical solution of the present application may relate to the technical field of blockchain, for example, the data involved in the present application, such as the ciphertext of coordinate information and/or the ciphertext of target information, are stored in the blockchain. Optionally, the present application can be applied to scenarios such as financial technology such as encrypting financial data, and can also be applied to scenarios such as digital medical treatment such as encrypting patient information to improve information security.

The blockchain involved in this application is a new application mode of computer technologies such as distributed data storage, point-to-point transmission (P2P transmission), consensus mechanism, and encryption algorithm. Using cryptographic methods to associate the generated data blocks, each data block contains a batch of network transaction information, which is used to verify the validity of its information (anti-counterfeiting) and generate the next block. The blockchain can include the underlying platform of the blockchain, the platform product service layer and the application service layer; the blockchain can be composed of multiple serial 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 the transaction, and the transaction can be permanently checked (it cannot be tampered with). 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 is applicable to the medical platform, and the target information can be, for example, the patient's medical record information, patient information, etc., by encrypting the patient's medical record information, patient information and other information of the medical platform, and storing the encrypted information in the In the blockchain network, it is beneficial to manage the patient's medical record information, patient information, etc., and improve the security of the patient's information.

Please refer to FIG. 1. FIG. 1 is a schematic flowchart of an information processing method for generating a key based on an attribute of information provided by an embodiment of the present application. The method is applied to a node in a blockchain network, and the node may be an independent one. A physical server can also be a server cluster or distributed system composed of multiple physical servers, and can also provide cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, and domain name services. , security services, Content Delivery Network (CDN), and cloud servers for basic cloud computing services such as big data and artificial intelligence platforms. Alternatively, the node may refer to computer equipment, including mobile phones, tablet computers, notebook computers, PDAs, smart speakers, mobile internet devices (MID, mobile internet device), POS (Point Of Sales, point of sale) machines, wearable devices (such as smart watches, smart bracelets, etc.) As shown in Figure 1, the method includes:

S101: Acquire an objective function for describing information and attribute information of each piece of sub-information in the target information to be processed.

Here, the objective function may refer to a function corresponding to an elliptic curve, and the objective function may also refer to a function corresponding to other curves. The target information includes at least two pieces of sub-information, and the target information may refer to data such as transaction data, business data, and internal data of an institution. The attribute information of each piece of sub-information in the target information includes at least one of the organization to which each piece of sub-information belongs, the generation address of each piece of sub-information, and the data type of each piece of sub-information.

S102: Generate a key corresponding to each piece of sub-information according to the attribute information of each piece of sub-information.

Here, the attribute information of each piece of sub-information is at least one of the organization to which each piece of sub-information belongs, the generation address of each piece of sub-information, and the data type of each piece of sub-information. The computer device may generate a key corresponding to each piece of sub-information according to at least one of the institution to which each piece of sub-information belongs, the generation address of each piece of sub-information, and the data type of each piece of sub-information. Since the attribute information of each piece of sub-information is different, the key corresponding to each piece of sub-information generated according to the attribute information of each piece of sub-information is different. Encryption, even if the illegal terminal obtains the key corresponding to a certain piece of sub-information, it cannot calculate the key corresponding to other sub-information based on the key, so it is impossible to decrypt the ciphertext of the target information, which can improve the security of the target information. sex.

The institution to which each piece of sub-information belongs may refer to an institution to which the terminal that generates each piece of sub-information belongs, or the institution to which each piece of sub-information belongs may refer to an institution that owns each piece of sub-information, for example, each sub-message is a banking institution The business data within one day, the institution to which each sub-message belongs is the banking institution. The generation address of each piece of sub-information may include an IP address, a MAC address, or other addresses of the terminal that generates each piece of sub-information. The data type of each piece of sub-information may refer to the service type of each piece of sub-information. For example, the business type of each piece of sub-information may include high-real-time services such as transfer services and recharge services, and low-real-time services such as marriage registration services and certificate processing services, and so on. The computer device generates a key corresponding to each piece of sub-information according to the attribute information of each piece of sub-information, and encrypts each piece of sub-information by using the key corresponding to each piece of sub-information to encrypt the target information and improve the security of the target information.

S103: Obtain a first random number corresponding to each piece of sub-information, and adjust each piece of sub-information according to the first random number to obtain each piece of adjusted sub-information.

Here, since when the value corresponding to each piece of sub-information is greater than the first threshold, it is impossible to map each piece of sub-information onto the curve of the objective function, so the coordinate point corresponding to each piece of sub-information cannot be calculated according to the curve of the objective function. Therefore, the first random number can be used to adjust each piece of sub-information, so that the value corresponding to each piece of sub-information after adjustment is less than or equal to the first threshold, so that each piece of sub-information is mapped to the curve of the objective function, according to the curve of the objective function Calculate the coordinate point corresponding to each sub-information. By using the first random number to adjust each piece of sub-information, the probability of obtaining the coordinate point corresponding to each piece of sub-information can be improved, thereby improving the probability of successful encryption. The first threshold may be determined according to a curve parameter corresponding to the objective function. If the curve parameter is the curve length c, the first threshold is (2^256)-w, where w is a very small value.

In specific implementation, random number generation algorithms can be used to generate random numbers, such as the central limit theorem and Box Muller (coordinate transformation method), Monte Carlo algorithm, numerical probability algorithm, Las Vegas algorithm or other algorithms to generate random numbers, and The generated random number is determined as the first random number corresponding to each piece of sub-information. Alternatively, you can call the rand function in the C language to generate random numbers.

In a possible case, if each piece of sub-information is not numeric data, each piece of sub-information can be encoded to obtain numeric-type encoded data, and each piece of sub-information corresponds to each piece of information according to the first random number corresponding to each piece of sub-information The encoded data is adjusted to obtain each piece of sub-information after adjustment.

In another possible situation, if each piece of sub-information is numerical data, each piece of sub-information is adjusted according to the first random number corresponding to each piece of sub-information to obtain each piece of adjusted sub-information. It can be known that each piece of sub-information after adjustment includes the piece of sub-information and the first random number corresponding to the piece of sub-information.

S104, according to the objective function and each adjusted piece of sub-information, obtain coordinate information corresponding to each of the at least two pieces of sub-information.

Here, for example, each piece of sub-information of the adjusted non-numeric type can be encoded to obtain coded data corresponding to each piece of sub-information of the adjusted numerical type, and the coded data corresponding to each piece of sub-information of the adjusted numerical type can be mapped to the corresponding coded data of the objective function. The corresponding coordinate point is obtained on the curve, so as to obtain the coordinate information corresponding to each piece of sub-information according to the coordinate point.

In a possible implementation manner, the curve corresponding to the objective function can be obtained, and each piece of adjusted sub-information is mapped to the first coordinate of the target point on the curve corresponding to the objective function; according to the first coordinate and the objective function , determine the second coordinate of the target point on the curve corresponding to the objective function; determine the first coordinate and the second coordinate as the coordinate information corresponding to each piece of sub-information, thereby obtaining at least two pieces of sub-information corresponding to each sub-information Coordinate information.

For example, to illustrate the acquisition of the coordinate information corresponding to any one of the at least two sub-information c, the second coordinate of the target point on the curve corresponding to the objective function can be determined according to the first coordinate and the objective function, and the first coordinate can be determined. The coordinates and the second coordinates are determined as the coordinate information corresponding to the sub-information c. For example, the curve corresponding to the objective function can be shown in formula (1-1):

y ² =x ³ +ax+b (1-1)

Among them, a and b are known real numbers, and x and y are both parameters. By determining the value of any one parameter in x or y, the value of the other parameter can be calculated by formula (1-1), for example , by determining the value of x, the value of y can be calculated according to formula (1-1).

For example, a is 1, b is -1, the sub-information c is mapped to the first coordinate of the target point on the curve corresponding to the objective function (for example, the abscissa of the target point) is 1, and a, b and the first coordinate The coordinates are substituted into formula (1-1) as x, and y is obtained as 1, that is, the second coordinate of the target point on the curve corresponding to the objective function is 1, then the coordinate information corresponding to the sub-information c is (1, 1), Through this method, the coordinate information corresponding to the other sub-information in the at least two pieces of sub-information can be acquired, thereby acquiring the coordinate information corresponding to each sub-information in the at least two pieces of sub-information.

S105 , encrypting the coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information by using the key corresponding to each piece of sub-information, to obtain a ciphertext of the coordinate information corresponding to each piece of sub-information.

Here, since the key corresponding to each piece of sub-information is generated according to the attribute information of each piece of sub-information in step S102, the computer device can use the key corresponding to each piece of sub-information to perform the coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information. Encrypt to obtain the ciphertext of the coordinate information corresponding to each sub-information. In a specific implementation, the computer device can obtain the private key of the terminal to which the target information belongs, and encrypt the coordinate information corresponding to each sub-information in the at least two sub-information according to the private key of the terminal and the key corresponding to each sub-information, and obtain each sub-information. The ciphertext of the coordinate information corresponding to the sliver information. It can be seen that the ciphertext of the coordinate information corresponding to the sub-information is the ciphertext obtained by encrypting the sub-information. If the ciphertext is not decrypted, the ciphertext of the corresponding sub-information corresponding to the ciphertext cannot be known even if the ciphertext is obtained. content. By encrypting each piece of sub-information corresponding to the target information by using the private key of the terminal to which the target information belongs and the key corresponding to each piece of sub-information, the security of the target information can be improved.

S106: Determine the ciphertext of the coordinate information corresponding to each piece of sub-information as the ciphertext of the target information, and store the ciphertext of the target information in the blockchain network.

Here, in the above steps, for each piece of sub-information in the at least two pieces of sub-information, the ciphertext of the coordinate information corresponding to each piece of sub-information will be obtained. Therefore, the ciphertext of the coordinate information corresponding to each piece of sub-information is determined as the ciphertext of the target information. , that is to say, the ciphertext of the target information includes the ciphertext of the coordinate information corresponding to each of the at least two sub-information, so far, the ciphertext of the target information can be obtained by encrypting the target information, and the ciphertext of the target information can be obtained. The documents are stored in the blockchain network. By sending the target information to the blockchain network for encryption and storage, the resource occupation of the local storage space of the terminal can be reduced, and the target information stored locally in the terminal can be prevented from being tampered with by illegal users, thereby improving the security of the target information.

Optionally, after the ciphertext of the target information is stored in the blockchain network, when there is a terminal that needs to obtain the target information subsequently, the computer device can verify the legitimacy of the terminal that needs to obtain the target information. In the case of legality, the ciphertext of the target information is decrypted to obtain the target information, and the target information is sent to the terminal that needs to obtain the target information, thereby realizing the acquisition of the target information. Alternatively, the ciphertext of the target information can also be sent to the terminal to which the target information belongs, and after the ciphertext of the target information is decrypted by the terminal to which the target information belongs, the decrypted target information is sent to the terminal that needs to obtain the target information, So as to achieve the acquisition of target information.

In the embodiment of the present application, the key corresponding to each piece of sub-information is generated according to the attribute information of each piece of sub-information. Since the attribute information of each piece of sub-information is different, the key corresponding to each piece of generated sub-information is different, so the key corresponding to each piece of sub-information is used. After the key is encrypted, it is difficult for an illegal terminal to obtain the key corresponding to each piece of sub-information, so it is difficult to decrypt the ciphertext, which can improve the difficulty of cracking the ciphertext and improve the security of information. By adjusting each piece of sub-information in the at least two pieces of sub-information, it is beneficial to generate coordinate information corresponding to each piece of adjusted sub-information according to each piece of adjusted sub-information, and improve the success rate of obtaining coordinate information corresponding to each piece of adjusted sub-information. By encrypting each piece of sub-information in the target information, illegal terminals are prevented from cracking the ciphertext, thereby improving the security of each piece of sub-information, thereby improving the security of the target information. By storing the ciphertext information of the target information in the blockchain network, the security of the information can be improved based on the characteristics of the blockchain that cannot be tampered with and is not easily lost; in addition, the ciphertext of the target information is stored in the blockchain network. , which can reduce the resource occupation of the local storage space of the terminal.

In one embodiment, the attribute information of each piece of sub-information above includes the organization to which each piece of sub-information above belongs, and the above step S102 includes the following steps s11 to s13.

s11: Obtain the time and the number of pieces of information written into the blockchain network by the organization to which each sub-information belongs.

Among them, the information written by the organization to the blockchain network includes all the information written by the organization to the blockchain network, and the number of written information includes the number of all information written by the organization to the blockchain network. . For example, the institution wrote 80 pieces of information to the blockchain network last year, and the institution wrote 100 pieces of information to the blockchain this year, then the number of pieces of information written to the blockchain network by the institution is 180, then the The time each of the 180 messages was written to the blockchain.

s12: Determine the activity level of the organization to which each piece of sub-information belongs according to the time of writing information and the number of pieces of writing information.

Here, the activity level may be, for example, a numerical value within 0-1, or the activity level may also be a numerical value within 0-10, or a numerical value within 0-100, and the like. For example, if the activity is a value within 0-100, the larger the value corresponding to the activity, the higher the activity of the organization; the smaller the value corresponding to the activity, the lower the activity of the organization.

For example, the method for determining the activity level of the organization to which each piece of sub-information belongs according to the time of writing information and the number of pieces of writing information may include: the shorter the period of writing information and the more pieces of writing information, the higher the activity level. High; the longer the cycle of writing information and the fewer pieces of writing information, the lower the activity. The information belonging to the same cycle can be determined according to the time when the information is written. For example, if the cycle is every week, the number of pieces of information that the institution writes to the blockchain network every week is the first quantity threshold, and the corresponding activity is activity level 1. The number of times the institution writes information to the blockchain network every month The number of pieces is the first quantity threshold, and the corresponding activity level is activity level 2. The number of pieces of information that the institution writes to the blockchain network every quarter is the first number threshold value, and the corresponding activity level is activity level 3, then the activity level is 1 is greater than activity 2 is greater than activity 3. Alternatively, the number of pieces of information that the institution writes to the blockchain network per week is the first threshold, the corresponding activity is 1, and the number of pieces of information that the institution writes to the blockchain network per month is the second threshold. Quantity threshold, the corresponding activity is Activity 2, the number of pieces of information that the institution writes to the blockchain network every quarter is the third quantity threshold, and the corresponding activity is Activity 3, then Activity 1 is greater than Activity 2 greater than activity level 3. Wherein, the first quantity threshold is greater than the second quantity threshold, and the second quantity threshold is greater than the third quantity threshold. The first quantity threshold, the second quantity threshold, and the third quantity threshold may be set according to specific conditions, which are not limited in this embodiment of the present application.

Alternatively, the activity of an institution can be determined based on the number of pieces of information the institution writes to the blockchain network each month. If the number of pieces of information that the institution writes to the blockchain network each month is greater than the first quantity threshold, the activity of the institution is a value within 80-100; if the institution writes to the blockchain network every month If the number of pieces of information is greater than the second quantity threshold and less than the first quantity threshold, the activity of the institution is a value within 60-79; if the number of pieces of information written to the blockchain network by the institution per month is greater than the third If the quantity threshold is smaller than the second quantity threshold, the activity of the institution is a value within 0-59. That is to say, the more pieces of information an institution writes to the blockchain network each month, the greater the value corresponding to the activity of the institution, and the greater the activity.

Optionally, the type of information written to the blockchain network by the organization to which each sub-information belongs and the number of written information can be obtained, and the type of written information and the number of written information can be determined. the activity of the institution.

Here, the more types of written information and the more pieces of written information, the higher the activity of the organization to which each piece of sub-information belongs; The lower the activity of the organization to which each sub-information belongs. For example, if the type of information written by the institution to the blockchain network is greater than the first value, and the number of pieces of information written is greater than the first quantity threshold, the corresponding activity is 1; If the type of written information is greater than the second value and less than the first value, and the number of written information is greater than the second quantity threshold and less than the first quantity threshold, the corresponding activity level is activity level 2; The type of written information is greater than the third numerical value and less than the second numerical value, and the number of pieces of written information is greater than the third quantity threshold and less than the second quantity threshold, and the corresponding activity is 3. Wherein, activity 1 is greater than activity 2 and greater than activity 3, and the first quantity threshold is greater than the second quantity threshold and greater than the third quantity threshold.

s13, respectively perform a hash operation on the activity of the organization to which each piece of sub-information belongs to obtain a key corresponding to each piece of sub-information.

Here, for example, the activity degree of the organization to which a certain piece of sub-information belongs is k, then a hash operation is performed on the activity degree of the organization to which the piece of sub-information belongs according to the hash function, that is, hash(k)=k1, then k1 is the piece of sub-information the corresponding key. The computer device obtains a key corresponding to each sub-information by using a hash function to perform a hash operation on the activity of the organization to which each sub-information belongs. Since the activity degree corresponding to the organization to which each sub-information belongs is different, the key corresponding to each sub-information obtained according to the activity degree is different. Therefore, in the subsequent encryption process, the key corresponding to each sub-information is used for encryption, and the obtained key Even if the ciphertext corresponding to the target information is obtained by an illegal terminal, it is difficult to obtain the key corresponding to each piece of sub-information, so it is impossible to decrypt the ciphertext of each piece of sub-information, so that the ciphertext of the target information cannot be decrypted. Decryption, thereby improving the security of the target information.

In one embodiment, the attribute information of each piece of sub-information includes the generation address of each piece of sub-information, and the above-mentioned step S102 includes the following steps s21-s22.

s21: Encode the generation address of each piece of sub-information to obtain a second random number corresponding to each piece of information.

s22, respectively perform a hash operation on the second random number corresponding to each piece of information to obtain a key corresponding to each piece of sub-information.

In steps s21-s22, the generated address of each piece of sub-information may be the IP address of the terminal to which each piece of sub-information belongs, the MAC address of the terminal to which each piece of sub-information belongs, and the specific geographic location of the terminal to which each piece of sub-information belongs, such as longitude and latitude, etc. . The computer equipment obtains the second random number corresponding to each piece of information by encoding the generation address of each piece of sub-information, and performs hash operation on the second random number corresponding to each piece of information to obtain the key corresponding to each piece of sub-information. For example, the computer can use the random number generation algorithm in the above step S103 to generate a second random number p corresponding to a certain piece of sub-information, and then perform a hash operation on the second random number p, that is, hash(p)=p1, then p1 is the key corresponding to this piece of information. Since the generation address of each sub-information may be different, the key corresponding to each sub-information obtained according to the generated address is different. Therefore, in the subsequent encryption process, the key corresponding to each sub-information is used for encryption, and the obtained ciphertext is different. Even if the illegal terminal obtains the ciphertext corresponding to the target information, it is difficult to obtain the key corresponding to each piece of sub-information, so it is impossible to decrypt the ciphertext of each piece of sub-information, so that the ciphertext of the target information cannot be decrypted, and then Improve the security of target information.

In one embodiment, the attribute information of each piece of sub-information includes the data type of each piece of sub-information, and the above step S102 includes the following steps s31 to s33.

s31, according to the data type of each piece of sub-information, determine the real-time level of processing each piece of sub-information.

S32, generate a third random number corresponding to each piece of sub-information according to the real-time level of each piece of sub-information.

s33, respectively perform a hash operation on the third random number corresponding to each piece of information to obtain a key corresponding to each piece of sub-information.

In steps s31 to s33, the data type of each piece of sub-information may refer to the business type of each piece of sub-information, and the business type may include transfer business, recharge business and other high real-time business types, as well as marriage registration business, certificate handling business, etc. Less real-time business types, etc. For the transfer business, recharge business and other types of business that require higher real-time performance, the real-time performance level of each sub-information corresponding to this type of service is higher; for marriage registration business, certificate processing business and other types of business needs real-time performance is relatively high. If the value is low, the real-time performance level of each piece of sub-information corresponding to this type of service is low. For example, sub-information completed within a first time threshold may be determined as a first real-time level, sub-information completed within a second time threshold may be determined as a second real-time level, and sub-information completed within a third time threshold The sub-information is determined to be the third real-time level, and so on. A third random number corresponding to each sub-information is generated according to the real-time level of each sub-information, and a hash operation is performed on the third random number corresponding to each sub-information to obtain a key corresponding to each sub-information. For example, a third random number m is generated according to the real-time level of a certain piece of sub-information, and a hash operation is performed on the third random number m, that is, hash(m)=m1, and m1 is the key corresponding to the piece of sub-information.

Since the data type of each sub-information may be different, the corresponding key of each sub-information obtained according to the data type is different. Therefore, in the subsequent encryption process, the key corresponding to each sub-information is used for encryption, and the obtained ciphertext is different. Even if the illegal terminal obtains the ciphertext corresponding to the target information, it is difficult to obtain the key corresponding to each piece of sub-information, so it is impossible to decrypt the ciphertext of each piece of sub-information, so that the ciphertext of the target information cannot be decrypted, and then Improve the security of target information.

In a possible implementation manner, the attribute information of each piece of sub-information may include the target amount contained in each piece of sub-information, and a fifth random number corresponding to each piece of sub-information is generated according to the target amount contained in each piece of sub-information; The corresponding fifth random number is hashed to obtain a key corresponding to each piece of sub-information.

Here, the amount of the subject matter refers to the amount of the subject matter (goods) contained in each piece of sub-information, that is, the total value of the goods in each piece of sub-information. If a certain piece of information is a sales contract for the purchase of a certain commodity, the subject amount is the total amount paid for the purchase of the commodity. Since the unit price and quantity of the subject matter in each sub-information are different, the amount of the subject matter contained in each sub-information is different. For example, if a fifth random number n is generated according to the target amount contained in a certain piece of sub-information, a hash operation is performed on the fifth random number n, that is, hash(n)=n1, and n1 is the key corresponding to the piece of sub-information. Since the target amount contained in each sub-information may be different, the key corresponding to each sub-information obtained according to the target amount contained in each sub-information is different. Therefore, in the subsequent encryption process, the key corresponding to each sub-information is used for encryption. The obtained ciphertexts are different. Even if the illegal terminal obtains the ciphertext corresponding to the target information, it is difficult to obtain the key corresponding to each sub-information. Therefore, it is impossible to decrypt the ciphertext of each sub-information, so that the target information cannot be decrypted. The ciphertext is decrypted, thereby improving the security of the target information.

In one embodiment, the above step S103 includes the following steps s41-s42.

s41, splicing the first random number with each piece of sub-information to obtain each piece of sub-information after splicing.

S42, if each piece of sub-information after splicing is smaller than the information threshold, determine each piece of sub-information after splicing as each piece of adjusted sub-information.

In steps s41-s42, if each piece of sub-information after splicing is smaller than the information threshold, it is considered that the piece of sub-information is mapped to the first coordinate of the target point on the curve corresponding to the objective function, which can be determined according to the first coordinate and the objective function. , the second coordinate of the target point on the curve corresponding to the objective function is obtained by calculation, that is, the coordinate information corresponding to each piece of sub-information can be obtained. If each piece of sub-information after splicing is greater than or equal to the information threshold, it is considered that the piece of sub-information is mapped to the first coordinate of the target point on the curve corresponding to the objective function, and the target cannot be calculated based on the first coordinate and the objective function. The second coordinate of the target point on the curve corresponding to the function, that is, the coordinate information corresponding to each piece of sub-information cannot be obtained. The first random numbers corresponding to each piece of sub-information may or may not be equal. The information threshold may be, for example, (2^256) or less than (2^256). By splicing the first random number with each piece of sub-information, each piece of sub-information after splicing can be obtained, so that each piece of sub-information after splicing is determined as the adjusted Slip information.

In a possible implementation manner, if each piece of sub-information after splicing is greater than or equal to the information threshold, the first random number can be adjusted, and the specific method includes the following steps s51-s53.

S51, if each piece of sub-information after splicing is greater than or equal to the information threshold, adjust the first random number.

S52, splicing the adjusted first random number with each piece of sub-information to obtain each candidate sub-information.

S53 , if each piece of candidate sub-information is smaller than the information threshold, determine each piece of candidate sub-information as each adjusted piece of sub-information.

In steps s51 to s53, since each piece of sub-information after splicing is greater than or equal to the information threshold, the piece of sub-information is mapped to the first coordinate of the target point on the curve corresponding to the objective function, and cannot be based on the first coordinate and the target. function, the second coordinate of the target point on the curve corresponding to the objective function is obtained by calculation, that is, the coordinate information corresponding to each piece of sub-information cannot be obtained. Therefore, it is necessary to adjust the first random number corresponding to each piece of sub-information, and splicing the adjusted first random number with each piece of sub-information to obtain each candidate piece of sub-information.

It can be seen that if each piece of candidate sub-information is less than the information threshold, the piece of sub-information is mapped to the first coordinate of the target point on the curve corresponding to the objective function, and the corresponding value of the objective function can be calculated according to the first coordinate and the objective function. The second coordinate of the target point on the curve, that is, the coordinate information corresponding to each piece of sub-information can be obtained. If each candidate sub-information is greater than or equal to the information threshold, it is considered that the sub-information is mapped to the first coordinate of the target point on the curve corresponding to the objective function, and the objective function cannot be calculated based on the first coordinate and the objective function. The second coordinate of the target point on the corresponding curve, that is, the coordinate information corresponding to each piece of sub-information cannot be obtained. That is, if each piece of candidate sub-information is greater than or equal to the information threshold, continue to adjust the first random number until the adjusted first random number and each piece of candidate sub-information are spliced, and each piece of candidate sub-information after splicing If it is less than the information threshold, then each piece of sub-information of the candidate after splicing is determined as each piece of adjusted sub-information. By splicing the first random number corresponding to each sub-information with the sub-information, and continuously adjusting the first random number corresponding to each sub-information, each adjusted sub-information can be obtained, and the success rate of subsequent encryption of each sub-information can be improved. .

In one embodiment, the above step S105 includes the following steps s61-s62.

s61: Obtain the private key of the terminal to which the target information belongs, and the key corresponding to each piece of sub-information.

Here, the terminal to which the target information belongs is the terminal that uploads the target information to the blockchain network for processing such as encryption and storage, and the private key of the terminal to which the target information belongs is the private key generated by the terminal.

In a specific implementation, for example, the identifier of the terminal to which the target information belongs can be obtained, a fourth random number can be generated by using the SECP256K1 algorithm, and the fourth random number can be filled to obtain the private key of the terminal. number. Here, the identifier of the terminal may refer to the factory serial number of the terminal, or other identifiers used to uniquely indicate the terminal.

S62, encrypt the coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information according to the private key of the terminal and the key corresponding to each piece of sub-information, to obtain the ciphertext of the coordinate information corresponding to each piece of sub-information.

In specific implementation, an encryption algorithm can be used to encrypt the coordinate information corresponding to each piece of sub-information to obtain the ciphertext of the coordinate information corresponding to each piece of sub-information. The encryption algorithm can include, for example, 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 computer device encrypts the coordinate information corresponding to each piece of sub-information in at least two pieces of sub-information according to the private key of the terminal and the key corresponding to each piece of sub-information, and obtains the ciphertext of the coordinate information corresponding to each piece of sub-information. Encryption is performed to obtain the corresponding ciphertext. After the terminal obtains the ciphertext corresponding to each piece of sub-information, it needs to be decrypted to obtain the sub-information corresponding to each piece of ciphertext.

In the specific implementation, according to the private key of the terminal and the key corresponding to each sub-information, the coordinate information corresponding to each sub-information in the at least two sub-information is encrypted, and the method of obtaining the ciphertext of the coordinate information corresponding to each sub-information is shown in Figure 2 2 is a schematic flowchart of an information processing method for generating a key based on an attribute of information provided by an embodiment of the present application, the method is applied to a node in a blockchain network, and the node may refer to a computer device; such as As shown in Figure 2, the method includes:

s71, obtain the coordinates of the base point of the curve of the objective function.

s72: Obtain the product of the base point coordinates and the private key of the terminal to obtain candidate coordinates.

S73, encrypt the candidate coordinates according to the key corresponding to each piece of sub-information to obtain the ciphertext of the candidate coordinates.

S74, fuse the coordinate information corresponding to each piece of sub-information with the ciphertext of the corresponding candidate coordinates to obtain the ciphertext of the coordinate information corresponding to each piece of sub-information.

In steps s71 to s74, by acquiring the curve of the objective function and the curve parameters of the objective function, the coordinates of the base point of the curve of the objective function can be acquired. For example, the base point is G, the corresponding base point coordinates are (x1, y1), and the private key of the terminal is h, then the candidate coordinates can be calculated according to formula (1-2):

H=h*G (1-2)

Among them, the candidate coordinate is H, the base point is G, and the private key of the terminal is h.

For example, if the number of sub-information corresponding to the target information is n, and the sub-information i is any sub-information in the n sub-information, the candidate coordinates can be encrypted by formula (1-3) to obtain the ciphertext of the candidate coordinates , and fuse the coordinate information corresponding to the sub-information i with the ciphertext of the candidate coordinates to obtain the ciphertext of the coordinate information corresponding to the sub-information i.

Ci=Mi+ki*H (1-3)

The candidate coordinates are H, Ci is the ciphertext of the coordinate information corresponding to the sub-information i, Mi is the coordinate information corresponding to the sub-information i, and ki is the key corresponding to the sub-information i. ki*H indicates that the candidate coordinates are encrypted according to the key corresponding to the sub-information i, and the ciphertext of the candidate coordinates is obtained. It can be known that, for other sub-information in the n pieces of sub-information, the encryption and fusion can also be performed by formula (1-3) to obtain the ciphertext of the coordinate information corresponding to the other sub-information. For each piece of sub-information, the ciphertext of the coordinate information corresponding to the piece of sub-information can be obtained by encrypting and fusing the formula (1-3), that is to say, a piece of sub-information corresponds to the number of ciphertexts of the coordinate information corresponding to a piece of sub-information , that is, for n pieces of sub-information, the number of ciphertexts of the coordinate information corresponding to the finally obtained sub-information is n.

By encrypting each piece of sub-information, even if an illegal terminal obtains the ciphertext corresponding to the sub-information, since the decryption cannot be achieved and the content of the sub-information cannot be obtained, the security of each piece of sub-information can be guaranteed, thereby ensuring the security of the target information. sex.

The methods of the embodiments of the present application are described above, and the devices of the embodiments of the present application are described below.

Referring to FIG. 3, FIG. 3 is a schematic diagram of the composition structure of an information processing apparatus for generating a key based on an attribute of information provided by an embodiment of the present application. The above-mentioned information processing apparatus for generating a key based on an attribute of information may be run in a computer device. A computer program (including program code) of , for example, the information processing apparatus for generating a key based on an attribute of the information is an application software; the apparatus can be used to execute the corresponding steps in the methods provided by the embodiments of the present application. The device 30 includes:

The function acquisition module 301 is used to acquire the target function for describing information, and the attribute information of each piece of sub-information in the target information to be processed, the target information includes at least two pieces of sub-information, and the attribute information of each piece of sub-information includes the attribute information of each piece of sub-information. At least one of the organization to which the information belongs, the generation address of each piece of sub-information, and the data type of each piece of sub-information;

a key generation module 302, configured to generate a key corresponding to each piece of sub-information according to the attribute information of each piece of sub-information;

an information adjustment module 303, configured to obtain a first random number corresponding to each piece of sub-information, adjust each piece of sub-information according to the first random number, and obtain each piece of adjusted sub-information;

A coordinate obtaining module 304, configured to obtain coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information according to the objective function and each piece of adjusted sub-information;

The information encryption module 305 is used for encrypting the coordinate information of the corresponding sub-information in the at least two pieces of sub-information by using the key corresponding to each sub-information to obtain the ciphertext of the coordinate information corresponding to each sub-information;

The information storage module 306 is configured to determine the ciphertext of the coordinate information corresponding to each piece of sub-information as the ciphertext of the target information, and store the ciphertext of the target information in the blockchain network.

Optionally, the attribute information of each piece of sub-information includes the organization to which each piece of sub-information belongs; the key generation module 302 is specifically used to: obtain the organization to which each piece of sub-information belongs and write information into the blockchain network. time and the number of pieces of written information; determine the activity of the organization to which each piece of sub-information belongs according to the time of the written information and the number of pieces of written information; respectively check the activity of the organization to which each piece of sub-information belongs Perform the Greek operation to obtain the key corresponding to each piece of sub-information.

Optionally, the attribute information of each piece of sub-information includes the generation address of each piece of sub-information; the key generation module 302 is specifically configured to: encode the generation address of each piece of sub-information, and obtain the first corresponding to each piece of information. Two random numbers; respectively perform a hash operation on the second random number corresponding to each piece of information to obtain a key corresponding to each piece of sub-information.

Optionally, the attribute information of each piece of sub-information includes the data type of each piece of sub-information; the key generation module 302 is specifically configured to: determine the real-time level of processing each piece of sub-information according to the data type of each piece of sub-information ; Generate the third random number corresponding to each piece of sub-information according to the real-time level of each piece of sub-information; respectively perform a hash operation on the third random number corresponding to each piece of information to obtain the corresponding key of each piece of sub-information.

Optionally, the information adjustment module 303 is specifically used for: splicing the first random number with each piece of sub-information to obtain each piece of sub-information after splicing; if each piece of sub-information after the splicing is less than the information threshold, then Each piece of sub-information after splicing is determined as each piece of adjusted sub-information.

Optionally, the information encryption module 305 is specifically configured to: obtain the private key of the terminal to which the target information belongs, and the key corresponding to each piece of sub-information; according to the private key of the terminal and the key corresponding to each piece of sub-information , encrypting the coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information to obtain the ciphertext of the coordinate information corresponding to each piece of sub-information.

Optionally, the information encryption module 305 is specifically used to: 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; according to the corresponding key of each piece of sub-information The candidate coordinates are encrypted to obtain the ciphertext of the candidate coordinates; the coordinate information corresponding to each piece of sub-information is fused with the ciphertext of the corresponding candidate coordinates to obtain the ciphertext of the coordinate information corresponding to each piece of sub-information.

It should be noted that, for content not mentioned in the embodiment corresponding to FIG. 3 , reference may be made to the description of the method embodiment, which will not be repeated here.

According to an embodiment of the present application, the steps involved in the information processing method for generating keys based on attributes of information shown in FIG. 1 can be performed by various modules in the information processing apparatus for generating keys based on attributes of information shown in FIG. 3 implement. For example, step S101 shown in FIG. 1 can be performed by the function acquisition module 301 shown in FIG. 3 , and step S102 shown in FIG. 1 can be performed by the key generation module 302 shown in FIG. 3 ; the steps shown in FIG. 1 S103 can be executed by the information adjustment module 303 in FIG. 3 ; step S104 shown in FIG. 1 can be executed by the coordinate acquisition module 304 in FIG. 3 ; step S105 shown in FIG. 1 can be executed by the information encryption module 305 in FIG. 3 step S106 shown in FIG. 1 can be performed by the information storage module 306 in FIG. 3 . According to an embodiment of the present application, each module in the information processing of generating a key based on the attribute of the information shown in FIG. 3 may be respectively or all combined into one or several units to form, or some (some) of the units may be formed. It can also be divided into multiple sub-units with smaller functions, which can realize the same operation without affecting the realization of the technical effects of the embodiments of the present application. The above modules are divided based on logical functions. In practical applications, the function of one module may also be implemented by multiple units, or the functions of multiple modules may be implemented by one unit. In other embodiments of the present application, the information processing apparatus for generating keys based on information attributes may also include other units. In practical applications, these functions may also be implemented with the assistance of other units, and may be implemented by cooperation of multiple units.

According to another embodiment of the present application, it can be implemented on a general-purpose computer device such as a computer including processing elements and storage elements such as a central processing unit (CPU), random access storage medium (RAM), read only storage medium (ROM), etc. Running a computer program (including program code) capable of executing the steps involved in the corresponding methods as shown in FIG. 1 and FIG. 2 , to construct an information processing apparatus for generating keys based on attributes of information as shown in FIG. 3 , And to realize the information processing method for generating a key based on the attribute of the information according to the embodiment of the present application. The above-mentioned computer program can be recorded on, for example, a computer-readable recording medium, loaded in the above-mentioned computing device via the computer-readable recording medium, and executed therein.

Referring to FIG. 4 , FIG. 4 is a schematic structural diagram of a computer device provided by an embodiment of the present application. As shown in FIG. 4 , the above-mentioned computer device 40 may include: a processor 401 , a network interface 404 and a memory 405 , in addition, the above-mentioned computer device 40 may further include: a user interface 403 , and at least one communication bus 402 . Among them, the communication bus 402 is used to realize the connection and communication between these components. The user interface 403 may include a display screen (Display) and a keyboard (Keyboard), and the optional user interface 403 may also include a standard wired interface and a wireless interface. Optionally, the network interface 404 may include a standard wired interface and a wireless interface (eg, a WI-FI interface). The memory 405 may be a high-speed RAM memory, or a non-volatile memory, such as at least one disk memory. The memory 405 can optionally also be at least one storage device located away from the aforementioned processor 401 . As shown in FIG. 4, the memory 405, which is a computer-readable storage medium, may include an operating system, a network communication module, a user interface module, and a device control application program.

In the computer device 40 shown in FIG. 4 , the network interface 404 can provide a network communication function; the user interface 403 is mainly used to provide an input interface for the user; and the processor 401 can be used to call the device control application stored in the memory 405 program to achieve:

It should be understood that the computer device 40 described in this embodiment of the present application can execute the description of the above-mentioned information processing method for generating a key based on the attribute of the information in the foregoing embodiments corresponding to FIG. 1 and FIG. The description of the above-mentioned information processing apparatus for generating a key based on the attribute of the information in the corresponding embodiment will not be repeated here. In addition, the description of the beneficial effects of using the same method will not be repeated.

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, which, when executed by a computer, cause the computer to execute the above-mentioned embodiments. The method, the computer may be part of the above mentioned computer equipment. For example, it is the above-mentioned processor 401 . By way of example, program instructions may be deployed for execution on one computer device, or on multiple computer devices located at one site, or alternatively, distributed across multiple sites and interconnected by a communications network Implemented, multiple computer devices distributed in multiple locations and interconnected by a communication network can form a blockchain network.

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

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and the program can be executed , may include the flow of the above-mentioned method embodiments. The storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM) or the like.

The above disclosures are only the preferred embodiments of the present application, and of course, the scope of the rights of the present application cannot be limited by this. Therefore, equivalent changes made according to the claims of the present application are still within the scope of the present application.

Claims

An information processing method for generating a key based on an attribute of the information, comprising:

Obtain the objective function used to describe the information, and attribute information of each piece of sub-information in the target information to be processed, where the target information includes at least two pieces of sub-information, and the attribute information of each piece of sub-information includes the institution to which each piece of sub-information belongs , at least one of the generation address of each piece of sub-information and the data type of each piece of sub-information;

Generate a key corresponding to each piece of sub-information according to the attribute information of each piece of sub-information;

obtaining a first random number corresponding to each piece of sub-information, and adjusting each piece of sub-information according to the first random number to obtain each piece of adjusted sub-information;

According to the objective function and each piece of adjusted sub-information, obtain coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information;

Using the key corresponding to each piece of sub-information, encrypt the coordinate information of the corresponding sub-information in the at least two pieces of sub-information, and obtain the ciphertext of the coordinate information corresponding to each of the sub-information;

The ciphertext of the coordinate information corresponding to each piece of sub-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 attribute information of each piece of sub-information includes an institution to which each piece of sub-information belongs; and the key corresponding to each piece of sub-information is generated according to the attribute information of each piece of sub-information ,include:

Obtain the time and the number of pieces of information written into the blockchain network by the organization to which each piece of sub-information belongs;

Determine the activity of the organization to which each piece of sub-information belongs according to the time of writing the information and the number of pieces of the writing information;

Perform a hash operation on the activity of the organization to which each piece of sub-information belongs to obtain a key corresponding to each of the sub-information.
The method according to claim 1, wherein the attribute information of each piece of sub-information includes a generation address of each piece of sub-information; the key corresponding to each piece of sub-information is generated according to the attribute information of each piece of sub-information ,include:

Encoding the generation address of each piece of sub-information to obtain a second random number corresponding to each piece of information;

Hash operation is performed on the second random number corresponding to each piece of information, respectively, to obtain a key corresponding to each piece of sub-information.
The method according to claim 1, wherein the attribute information of each piece of sub-information includes a data type of each piece of sub-information; the generating a key corresponding to each piece of sub-information according to the attribute information of each piece of sub-information ,include:

According to the data type of each piece of sub-information, determine the real-time level of processing each piece of sub-information;

Generate a third random number corresponding to each piece of sub-information according to the real-time level of each piece of sub-information;

Perform a hash operation on the third random number corresponding to each piece of information, respectively, to obtain a key corresponding to each piece of sub-information.
The method according to claim 1, wherein the adjusting each piece of sub-information according to the first random number to obtain each piece of sub-information after adjustment comprises:

Splicing the first random number and each piece of sub-information to obtain each piece of sub-information after the splicing;

If each piece of sub-information after splicing is smaller than the information threshold, each piece of sub-information after splicing is determined as each piece of sub-information after adjustment.
The method according to claim 1, wherein the coordinate information of the corresponding sub-information in the at least two pieces of sub-information is encrypted to obtain the ciphertext of the coordinate information corresponding to each sub-information, comprising:

Obtain the private key of the terminal to which the target information belongs, and the key corresponding to each piece of sub-information;

According to the private key of the terminal and the key corresponding to each piece of sub-information, the coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information is encrypted to obtain the ciphertext of the coordinate information corresponding to each piece of sub-information.
The method according to claim 6, wherein the coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information is encrypted according to the private key and the key corresponding to each piece of sub-information to obtain the The ciphertext of the coordinate information corresponding to each sub-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 each piece of sub-information to obtain the ciphertext of the candidate coordinates;

The coordinate information corresponding to each piece of sub-information is fused with the ciphertext of the corresponding candidate coordinates to obtain the ciphertext of the coordinate information corresponding to each piece of sub-information.
An information processing device for generating keys based on attributes of information, comprising:

A function acquisition module, used for acquiring an objective function for describing information, and attribute information of each piece of sub-information in the target information to be processed, the target information including at least two pieces of sub-information, and the attribute information of each piece of sub-information including the At least one of the organization to which each piece of sub-information belongs, the generation address of each piece of sub-information, and the data type of each piece of sub-information;

a key generation module, configured to generate a key corresponding to each piece of sub-information according to the attribute information of each piece of sub-information;

an information adjustment module, configured to obtain a first random number corresponding to each piece of sub-information, adjust each piece of sub-information according to the first random number, and obtain each piece of adjusted sub-information;

a coordinate obtaining module, configured to obtain coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information according to the objective function and each piece of adjusted sub-information;

an information encryption module, configured to encrypt the coordinate information of the corresponding sub-information in the at least two pieces of sub-information by using the key corresponding to each piece of sub-information to obtain the ciphertext of the coordinate information corresponding to each of the sub-information;

An information storage module, configured to determine the ciphertext of the coordinate information corresponding to each piece of sub-information as the ciphertext of the target information, and store the ciphertext of the target information in the blockchain network.
A computer device, comprising: a processor, a memory and a network interface;

The processor is connected to the memory and the network interface, wherein the network interface is used to provide a data communication function, the memory is used to store program codes, and the processor is used to call the program codes to execute The following methods:

Obtain the objective function used to describe the information, and attribute information of each piece of sub-information in the target information to be processed, where the target information includes at least two pieces of sub-information, and the attribute information of each piece of sub-information includes the institution to which each piece of sub-information belongs , at least one of the generation address of each piece of sub-information and the data type of each piece of sub-information;

Generate a key corresponding to each piece of sub-information according to the attribute information of each piece of sub-information;

obtaining a first random number corresponding to each piece of sub-information, and adjusting each piece of sub-information according to the first random number to obtain each piece of adjusted sub-information;

According to the objective function and each piece of adjusted sub-information, obtain coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information;

Using the key corresponding to each piece of sub-information, encrypt the coordinate information of the corresponding sub-information in the at least two pieces of sub-information, and obtain the ciphertext of the coordinate information corresponding to each of the sub-information;

The ciphertext of the coordinate information corresponding to each piece of sub-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 device according to claim 9, wherein the attribute information of each piece of sub-information includes an institution to which each piece of sub-information belongs; and performing the generating according to the attribute information of each piece of sub-information corresponding to the each piece of sub-information keys, including:

Obtain the time and the number of pieces of information written into the blockchain network by the organization to which each piece of sub-information belongs;

Determine the activity of the organization to which each piece of sub-information belongs according to the time of writing the information and the number of pieces of the writing information;

Perform a hash operation on the activity of the organization to which each piece of sub-information belongs to obtain a key corresponding to each of the sub-information.
The computer device according to claim 9, wherein the attribute information of each piece of sub-information includes a generation address of each piece of sub-information; keys, including:

Encoding the generation address of each piece of sub-information to obtain a second random number corresponding to each piece of information;

Hash operation is performed on the second random number corresponding to each piece of information, respectively, to obtain a key corresponding to each piece of sub-information.
The computer device according to claim 9, wherein the attribute information of each piece of sub-information includes the data type of each piece of sub-information; keys, including:

According to the data type of each piece of sub-information, determine the real-time level of processing each piece of sub-information;

Generate a third random number corresponding to each piece of sub-information according to the real-time level of each piece of sub-information;

Perform a hash operation on the third random number corresponding to each piece of information, respectively, to obtain a key corresponding to each piece of sub-information.
The computer device according to claim 9, wherein performing the encryption of the coordinate information of the corresponding sub-information in the at least two pieces of sub-information to obtain the ciphertext of the coordinate information corresponding to each of the sub-information, comprising:

Obtain the private key of the terminal to which the target information belongs, and the key corresponding to each piece of sub-information;

According to the private key of the terminal and the key corresponding to each piece of sub-information, the coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information is encrypted to obtain the ciphertext of the coordinate information corresponding to each piece of sub-information.
The computer device according to claim 13, wherein performing the encryption according to the private key and the key corresponding to each piece of sub-information to encrypt the coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information, to obtain The ciphertext of the coordinate information corresponding to each piece of sub-information includes:

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 each piece of sub-information to obtain the ciphertext of the candidate coordinates;

The coordinate information corresponding to each piece of sub-information is fused with the ciphertext of the corresponding candidate coordinates to obtain the ciphertext of the coordinate information corresponding to each piece of sub-information.
A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, the computer program comprising program instructions that, when executed by a processor, cause the processor to perform the following method:

Obtain the objective function used to describe the information, and attribute information of each piece of sub-information in the target information to be processed, where the target information includes at least two pieces of sub-information, and the attribute information of each piece of sub-information includes the institution to which each piece of sub-information belongs , at least one of the generation address of each piece of sub-information and the data type of each piece of sub-information;

Generate a key corresponding to each piece of sub-information according to the attribute information of each piece of sub-information;

obtaining a first random number corresponding to each piece of sub-information, and adjusting each piece of sub-information according to the first random number to obtain each piece of adjusted sub-information;

According to the objective function and each piece of adjusted sub-information, obtain coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information;

Using the key corresponding to each piece of sub-information, encrypt the coordinate information of the corresponding sub-information in the at least two pieces of sub-information, and obtain the ciphertext of the coordinate information corresponding to each of the sub-information;

The ciphertext of the coordinate information corresponding to each piece of sub-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 according to claim 15, wherein the attribute information of each piece of sub-information includes a mechanism to which each piece of sub-information belongs; and performing the generating of the each piece of sub-information according to the attribute information of each piece of sub-information The key corresponding to the information, including:

Obtain the time and the number of pieces of information written into the blockchain network by the organization to which each piece of sub-information belongs;

Determine the activity of the organization to which each piece of sub-information belongs according to the time of writing the information and the number of pieces of the writing information;

Perform a hash operation on the activity of the organization to which each piece of sub-information belongs to obtain a key corresponding to each of the sub-information.
The computer-readable storage medium according to claim 15, wherein the attribute information of each piece of sub-information includes a generation address of the each piece of sub-information; performing the generating of the each piece of sub-information according to the attribute information of the each piece of sub-information The key corresponding to the information, including:

Encoding the generation address of each piece of sub-information to obtain a second random number corresponding to each piece of information;

Hash operation is performed on the second random number corresponding to each piece of information, respectively, to obtain a key corresponding to each piece of sub-information.
The computer-readable storage medium according to claim 15, wherein the attribute information of each piece of sub-information includes a data type of each piece of sub-information; and performing the generating of the each piece of sub-information according to the attribute information of each piece of sub-information The key corresponding to the information, including:

According to the data type of each piece of sub-information, determine the real-time level of processing each piece of sub-information;

Generate a third random number corresponding to each piece of sub-information according to the real-time level of each piece of sub-information;

Perform a hash operation on the third random number corresponding to each piece of information, respectively, to obtain a key corresponding to each piece of sub-information.
The computer-readable storage medium according to claim 15, wherein the encrypting the coordinate information of the corresponding sub-information in the at least two pieces of sub-information is performed to obtain the ciphertext of the coordinate information corresponding to each of the sub-information, include:

Obtain the private key of the terminal to which the target information belongs, and the key corresponding to each piece of sub-information;

According to the private key of the terminal and the key corresponding to each piece of sub-information, the coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information is encrypted to obtain the ciphertext of the coordinate information corresponding to each piece of sub-information.
The computer-readable storage medium according to claim 19, wherein, performing the step of performing the process on the coordinate information corresponding to each piece of sub-information in the at least two pieces of sub-information according to the private key and the key corresponding to each piece of sub-information Encryption to obtain the ciphertext of the coordinate information corresponding to each piece of sub-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 each piece of sub-information to obtain the ciphertext of the candidate coordinates;

The coordinate information corresponding to each piece of sub-information is fused with the ciphertext of the corresponding candidate coordinates to obtain the ciphertext of the coordinate information corresponding to each piece of sub-information.