Longitudinal encryption authentication method and system for power monitoring

Abstract

The invention discloses a longitudinal encryption authentication method and system for power monitoring, and the method comprises the steps: obtaining to-be-encrypted data of power monitoring, and carrying out the analysis of the to-be-encrypted data, and determining a sensitivity level; segmenting the to-be-encrypted data according to the sensitivity level, and performing hierarchical division on the segmented to-be-encrypted data; determining an encryption algorithm of the to-be-encrypted data according to the hierarchies, and performing encryption processing on the to-be-encrypted data of different hierarchies according to the encryption algorithm; and performing hash processing on the encrypted to-be-encrypted data of different levels to generate an abstract, and signing the abstract to complete authentication of the encrypted to-be-encrypted data. According to the method, the data is divided and encrypted and authenticated according to the sensitivity level, so that the high-sensitivity data is protected more strictly, the low-sensitivity data is encrypted in a relatively lightweight level, the data is ensured not to be easily obtained or tampered in the storage and transmission process, the verification requirements on the integrity and authenticity of the data are met, and the verification efficiency is improved. And the sensitive data can be effectively protected and managed.

Description

Technical Field

[0001] The present invention relates to the technical field of data encryption, and in particular to a longitudinal encryption authentication method and system for power monitoring. Background Art

[0002] With the popularization and development of power monitoring systems, higher and higher requirements are put forward for the security and integrity of power data. In order to ensure that power data is not subject to unauthorized access and tampering during storage and transmission, and to ensure the integrity and authenticity of the data, the vertical encryption authentication method has emerged. The vertical encryption authentication method is a secure data processing technology designed for power monitoring systems. Its core idea is to perform hierarchical encryption processing on data according to the sensitivity level of the data, and to authenticate the encrypted data through digital signatures and summary generation.

[0003] However, in traditional power monitoring systems, a single encryption level is often used to uniformly encrypt all data. This approach cannot perform differentiated encryption processing according to the different sensitivities of the data, resulting in insufficient protection for highly sensitive data and less sensitive data. The disadvantage of this single encryption level is that it cannot fully meet the needs of different data security levels. There are several problems: different types of data may have different security requirements. For example, highly sensitive data such as user privacy information and device status information require stricter protection, while some low-sensitivity data such as operation logs and device parameters may only require basic encryption protection. A single encryption level cannot meet the differentiated needs of different data security levels. The use of a single encryption level may lead to over-encryption of low-sensitivity data, wasting encryption computing resources and reducing the overall performance of the system. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a longitudinal encryption authentication method and system for power monitoring, comprising:

[0005] Acquire the data to be encrypted from power monitoring, analyze the data to be encrypted, and determine the sensitivity level of the data to be encrypted;

[0006] Segment the data to be encrypted according to the sensitivity level, and divide the segmented data to be encrypted into different levels;

[0007] Determine the encryption algorithm of the data to be encrypted according to the level, and encrypt the data to be encrypted at different levels according to the encryption algorithm;

[0008] The encrypted data at different levels are hashed to generate a summary, which is then signed to complete the authentication of the encrypted data at different levels.

[0009] Furthermore, analyzing the data to be encrypted to determine the sensitivity of the data to be encrypted includes:

[0010] Obtaining content distribution of the data to be encrypted, and decomposing the data to be encrypted according to the content distribution to obtain several data segments;

[0011] Determine the content information contained in each data segment, and evaluate the content information contained in each data segment to determine the sensitivity of each data segment.

[0012] Furthermore, the step of evaluating the content information contained in each data segment to determine the sensitivity level of each data segment includes:

[0013] Analyze the content information contained in the data fragments to determine the key information related to the sensitivity level;

[0014] Determine the correlation between each key information and the sensitivity level, and calculate the sum of the correlations between all key information and the sensitivity level;

[0015] Calculate the ratio of each relevance to the total, and use the ratio as the weight corresponding to each key information;

[0016] Each key information is evaluated and valued by the expert evaluation method to obtain the evaluation value of each key information;

[0017] The evaluation value of each key information is weightedly added to the corresponding weight to obtain the sensitivity value of each data segment, and the sensitivity level of each data segment is determined according to the preset sensitivity value range-sensitivity level mapping table.

[0018] Furthermore, the content information contained in the data fragment is analyzed to determine key information related to the sensitivity, including:

[0019] Obtain all information from the content information contained in the data fragment and analyze the relevance of each information to the sensitivity level;

[0020] The information whose relevance exceeds the preset value is screened out and determined as key information related to the sensitivity level.

[0021] Furthermore, the segmenting of the data to be encrypted according to the sensitivity level and the hierarchical division of the segmented data to be encrypted include:

[0022] The data to be encrypted is divided according to the sensitivity level, and data segments with the same sensitivity level are merged to obtain a plurality of data segment sets;

[0023] The sensitivity level of each data segment set is obtained, and the data segment set with the lowest sensitivity level is divided into low-level data to be encrypted, the data segment set with the highest sensitivity level is divided into high-level data to be encrypted, and the remaining data segment sets are divided into medium-level data to be encrypted.

[0024] Furthermore, the step of determining an encryption algorithm for the data to be encrypted according to the level, and encrypting the data to be encrypted at different levels according to the encryption algorithm, includes:

[0025] For low-level data to be encrypted, a symmetric encryption algorithm is used to encrypt the low-level data to be encrypted;

[0026] For the middle-level data to be encrypted, an asymmetric encryption algorithm is used to encrypt the middle-level data to be encrypted;

[0027] For high-level data to be encrypted, an asymmetric encryption algorithm is used to encrypt the key, and a symmetric encryption algorithm is used to encrypt the high-level data to be encrypted.

[0028] Furthermore, the encrypted data at different levels are hashed to generate a summary, and the summary is signed to complete the authentication of the encrypted data at different levels, including:

[0029] According to the levels of the encrypted data to be encrypted from low to high, the number of bits of the hash value for hashing the encrypted data to be encrypted is increased in sequence, and the number of bits of the hash value for different levels after encryption is generated from small to large;

[0030] For low-level data to be encrypted, a symmetric encryption algorithm is used to encrypt the summary. For mid-level data to be encrypted, an asymmetric encryption algorithm is used to encrypt the summary. For high-level data to be encrypted, a hybrid encryption algorithm is used to encrypt the summary.

[0031] The encrypted data to be encrypted, the summary and the digital signature at different levels are stored together to complete the authentication of the encrypted data to be encrypted at different levels.

[0032] The present invention also provides a vertical encryption authentication system for power monitoring, comprising:

[0033] An analysis module, used for obtaining the data to be encrypted from power monitoring, analyzing the data to be encrypted, and determining the sensitivity level of the data to be encrypted;

[0034] A partitioning module is used to partition the data to be encrypted according to the sensitivity level and to divide the partitioned data to be encrypted into different levels;

[0035] The encryption module is used to determine the encryption algorithm of the data to be encrypted according to the level, and encrypt the data to be encrypted at different levels according to the encryption algorithm;

[0036] The authentication module is used to perform hash processing on the encrypted data at different levels, generate a summary, and sign the summary to complete the authentication of the encrypted data at different levels.

[0037] Compared with the prior art, the longitudinal encryption authentication method and system for power monitoring in the embodiment of the present invention has the following beneficial effects:

[0038] The present invention encrypts data at different levels to ensure that data is not easily obtained or tampered with by unauthorized personnel during storage and transmission, thereby ensuring data security;

[0039] The present invention can verify the integrity of data during data transmission or storage and prevent data from being tampered with or damaged by performing hash processing and digest generation on encrypted data and signing the digest;

[0040] The present invention divides and encrypts data according to the sensitivity level, which can achieve differentiated protection for sensitive data of different levels and ensure that highly sensitive data is more strictly protected;

[0041] The present invention can ensure the authenticity and integrity of data by digitally signing the data summary, and the receiver can verify the signature to confirm the legitimacy of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the flow structure of the vertical encryption authentication method for power monitoring in an embodiment of the present invention;

[0043] Figure 2 It is a schematic diagram of the composition of a vertical encryption authentication system for power monitoring in an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0045] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the platform or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] The terms "second" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined with "second" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "multiple" means two or more.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] like Figure 1 As shown, in an embodiment of the present application, a vertical encryption authentication method for power monitoring is provided, including: S100: obtaining the data to be encrypted of power monitoring, analyzing the data to be encrypted, and determining the sensitivity level of the data to be encrypted; S200: segmenting the data to be encrypted according to the sensitivity level, and dividing the segmented data to be encrypted into layers; S300: determining the encryption algorithm of the data to be encrypted according to the layer, and encrypting the data to be encrypted at different layers according to the encryption algorithm; S400: performing hash processing on the encrypted data to be encrypted at different layers, generating a summary, and signing the summary to complete the authentication of the encrypted data to be encrypted at different layers.

[0049] Furthermore, the present invention can ensure that the data is not easily acquired or tampered with by unauthorized personnel during storage and transmission by encrypting data at different levels, thereby ensuring the security of the data; the present invention can verify the integrity of the data during data transmission or storage by hashing and generating a summary of the encrypted data, and signing the summary, thereby preventing the data from being tampered with or damaged; the present invention divides and encrypts the data according to the sensitivity level, thereby achieving differentiated protection for sensitive data of different levels, thereby ensuring that highly sensitive data is more strictly protected; the present invention can ensure the authenticity and integrity of the data by digitally signing the data summary, and the recipient can verify the signature to confirm the legitimacy of the data. In summary, the present invention divides and encrypts the data according to the sensitivity level, thereby ensuring that highly sensitive data is more strictly protected, and that low-sensitivity data is encrypted with relatively lightweight encryption, thereby ensuring that the data is not easily acquired or tampered with during storage and transmission, thereby meeting the verification requirements for data integrity and authenticity, and ensuring that sensitive data is effectively protected and managed.

[0050] In an embodiment of the present application, a vertical encryption authentication method for power monitoring is provided, wherein the data to be encrypted is analyzed to determine the sensitivity of the data to be encrypted, including: obtaining the content distribution of the data to be encrypted, and decomposing the encrypted data according to the content distribution to obtain a plurality of data segments; determining the content information contained in each data segment, and evaluating the content information contained in each data segment to determine the sensitivity of each data segment.

[0051] Specifically, conduct a comprehensive content analysis on the encrypted data to understand the content composition and structure of the data, review and analyze data from different sources to obtain a full picture of the data; according to the content and structure of the data, appropriately decompose the data into several data segments, which will help to analyze and process the data more finely; conduct a detailed content analysis on each data segment to determine the specific information contained therein; for each data segment, evaluate the sensitivity of the content information contained therein; and determine the sensitivity level of each data segment based on the evaluation results. Through the above steps, the content of the encrypted data can be comprehensively analyzed and evaluated, thereby providing a basis and basis for subsequent differentiated encryption processing and access control. This analysis and evaluation process helps to ensure that appropriate security protection measures are taken for data of different sensitivities and improve overall data security.

[0052] In an embodiment of the present application, a vertical encryption authentication method for power monitoring is provided, wherein the content information contained in each data segment is evaluated to determine the sensitivity level of each data segment, including: analyzing the content information contained in the data segment to determine the key information related to the sensitivity level; determining the correlation between each key information and the sensitivity level, and calculating the sum of the correlations between all key information and the sensitivity level; calculating the ratio of each correlation to the sum, and using the ratio as the weight corresponding to each key information; evaluating and valuing each key information through an expert evaluation method to obtain an evaluation value of each key information; performing weighted addition calculation on the evaluation value of each key information and the corresponding weight to obtain the sensitivity value of each data segment, and determining the sensitivity level of each data segment according to a preset sensitivity value range-sensitivity level mapping table.

[0053] Specifically, determine the key information contained in each data segment. For each key information, it is necessary to evaluate the correlation between it and the sensitivity level, and use statistical analysis or expert judgment to determine the correlation; summarize the correlation between each key information and the sensitivity level to obtain the total correlation; use the ratio of the correlation of each key information to the sum as the weight of the key information for subsequent weighted calculations; expert evaluation can be carried out by professional security experts or relevant business experts to evaluate and value each key information, usually using qualitative or quantitative evaluation methods; perform weighted addition on the evaluation value of each key information and the corresponding weight to obtain the sensitivity value of each data segment; map the sensitivity value of each data segment to the corresponding sensitivity level according to the preset sensitivity value range-sensitivity level mapping table.

[0054] In an embodiment of the present application, a vertical encryption authentication method for power monitoring is provided, wherein the content information contained in the data segment is analyzed to determine key information related to the sensitivity level, including: obtaining all information from the content information contained in the data segment, and analyzing the correlation between each information and the sensitivity level; and filtering out information whose correlation exceeds a preset value and determining it as key information related to the sensitivity level.

[0055] Specifically, all information is extracted from the data fragments; for each extracted information, a correlation analysis is required to evaluate the correlation between each information and the sensitivity level by analyzing factors such as the data type, content, and relevance; according to the preset correlation threshold, the information with a correlation exceeding the preset value is screened out and determined as key information related to the sensitivity level. Through the above steps, the content information contained in the data fragments can be comprehensively analyzed and screened, thereby determining the key information related to the sensitivity level, which helps to provide specific guidance and basis for subsequent data encryption and security protection.

[0056] In an embodiment of the present application, a vertical encryption authentication method for power monitoring is provided, in which the data to be encrypted is segmented according to sensitivity levels, and the segmented data to be encrypted is hierarchically divided, including: segmenting the data to be encrypted according to sensitivity levels, and merging data segments with the same sensitivity level to obtain a plurality of data segment sets; obtaining the sensitivity level of each data segment set, and dividing the data segment set with the lowest sensitivity level into low-level data to be encrypted, dividing the data segment set with the highest sensitivity level into high-level data to be encrypted, and dividing the remaining data segment sets into middle-level data to be encrypted.

[0057] Specifically, according to the sensitivity assessment, the data to be encrypted is divided into different sensitivity levels, and then the data fragments of the same sensitivity level are merged to obtain several data fragment sets; for each data fragment set, its sensitivity level is determined, which can usually be determined based on the sensitivity level of the data fragments contained in the set; according to the sensitivity level of each data fragment set, the data fragment set with the lowest sensitivity level is divided into low-level data to be encrypted, the data fragment set with the highest sensitivity level is divided into high-level data to be encrypted, and the remaining data fragment sets are divided into medium-level data to be encrypted. Through the above steps, the data to be encrypted can be reasonably divided and divided according to the sensitivity level, thereby providing a clear classification basis for subsequent encryption processing, which helps to ensure that appropriate security protection measures are taken for data of different sensitivity levels.

[0058] In an embodiment of the present application, a vertical encryption authentication method for power monitoring is provided, in which the encryption algorithm of the data to be encrypted is determined according to the level, and the data to be encrypted at different levels are encrypted according to the encryption algorithm, including: for the low-level data to be encrypted, the low-level data to be encrypted is encrypted using a symmetric encryption algorithm; for the middle-level data to be encrypted, the middle-level data to be encrypted is encrypted using an asymmetric encryption algorithm; for the high-level data to be encrypted, the key is encrypted using an asymmetric encryption algorithm, and the high-level data to be encrypted is encrypted using a symmetric encryption algorithm.

[0059] Specifically, for low-level data, you can choose to use a symmetric encryption algorithm (such as AES) to encrypt the data. The symmetric encryption algorithm uses the same key for encryption and decryption, so when processing low-level data, key management is relatively simple; for mid-level data, you can choose to use an asymmetric encryption algorithm (such as RSA) to encrypt the data. The asymmetric encryption algorithm uses public and private keys for encryption and decryption, so mid-level data can be processed more securely; for high-level data, you can choose to use an asymmetric encryption algorithm to encrypt the key, and then use a symmetric encryption algorithm to encrypt the data. This method is called composite encryption, which can take into account both security and efficiency. First, use an asymmetric encryption algorithm to encrypt the key, and then use a symmetric encryption algorithm to encrypt the data. Through the above steps, you can choose the appropriate encryption algorithm for processing according to the sensitivity level of the data, thereby ensuring that the security and protection measures of data at different levels are effectively implemented.

[0060] In an embodiment of the present application, a vertical encryption authentication method for power monitoring is provided, wherein the encrypted data of different levels are hashed to generate a summary, and the summary is signed to complete the authentication of the encrypted data of different levels, including: increasing the number of hash value bits for hashing the encrypted data from low to high according to the level of the encrypted data, and generating summaries of hash value bits from small to large for different levels after encryption; for the low-level data to be encrypted, encrypting the summary using a symmetric encryption algorithm, for the middle-level data to be encrypted, encrypting the summary using an asymmetric encryption algorithm, and for the high-level data to be encrypted, encrypting the summary using a hybrid encryption algorithm; storing the encrypted data of different levels, the summary and the digital signature together, to complete the authentication of the encrypted data of different levels.

[0061] Specifically, a relatively short hash value is generated for the encrypted data at the low level, and then the summary is encrypted using a symmetric encryption algorithm; for the encrypted data at the middle level, a relatively longer hash value is generated, and then the summary is encrypted using an asymmetric encryption algorithm; for the encrypted data at the high level, the longest hash value is generated, and then the summary is encrypted using a hybrid encryption algorithm, which may include a combination of symmetric and asymmetric encryption; the encrypted data, summary and digital signature at different levels are stored together to complete the authentication of the encrypted data at different levels. Through the above steps, the number of bits of the hash value and the encryption algorithm can be gradually strengthened according to the level of the data, ensuring the integrity and security of the data, and helping to provide an effective authentication and protection mechanism for the encrypted data at different levels.

[0062] like Figure 2 As shown, in an embodiment of the present application, a vertical encryption authentication system for power monitoring is provided, including: an analysis module, used to obtain the data to be encrypted of power monitoring, analyze the data to be encrypted, and determine the sensitivity level of the data to be encrypted; a division module, used to divide the data to be encrypted according to the sensitivity level, and divide the divided data to be encrypted into levels; an encryption module, used to determine the encryption algorithm of the data to be encrypted according to the level, and encrypt the data to be encrypted at different levels according to the encryption algorithm; an authentication module, used to hash the encrypted data to be encrypted at different levels, generate a summary, and sign the summary, so as to complete the authentication of the encrypted data to be encrypted at different levels.

[0063] In summary, the embodiment of the present invention provides a vertical encryption authentication method and system for power monitoring, which includes: obtaining the data to be encrypted of power monitoring, analyzing it to determine the sensitivity level; segmenting the data to be encrypted according to the sensitivity level, and dividing the segmented data to be encrypted into layers; determining the encryption algorithm of the data to be encrypted according to the layer, and encrypting the data to be encrypted at different layers according to it; hashing the encrypted data to be encrypted at different layers to generate a summary, and signing the summary to complete the authentication of the encrypted data to be encrypted. The present invention divides the data according to the sensitivity level and performs encryption authentication, ensuring that highly sensitive data is more strictly protected, and that low-sensitivity data is relatively lightweight encrypted, ensuring that the data is not easily obtained or tampered with during storage and transmission, meeting the verification requirements for data integrity and authenticity, and ensuring that sensitive data is effectively protected and managed.

[0064] Finally, it should be noted that it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0065] The above is only an example of implementation of the present invention, but it cannot be used to limit the scope of the present invention. Any structural changes made according to the present invention, as long as they do not lose the essence of the present invention, should be regarded as falling within the scope of protection of the present invention and being restricted. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process and related instructions of the platform described above can refer to the corresponding process in the aforementioned platform embodiment, and will not be repeated here.

[0066] The term "comprises" or any other similar term is intended to cover a non-exclusive inclusion such that a process, platform, article, or apparatus / platform that includes a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, platform, article, or apparatus / platform.

[0067] So far, the technical solutions of the present invention have been described in conjunction with the further embodiments shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A vertical encryption authentication method for power monitoring, characterized in that: include: Acquire the data to be encrypted from power monitoring, analyze the data to be encrypted, and determine the sensitivity level of the data to be encrypted; Segment the data to be encrypted according to the sensitivity level, and divide the segmented data to be encrypted into different levels; Determine the encryption algorithm of the data to be encrypted according to the level, and encrypt the data to be encrypted at different levels according to the encryption algorithm; The encrypted data at different levels are hashed to generate a summary, which is then signed to complete the authentication of the encrypted data at different levels.

2. A vertical encryption authentication method for power monitoring according to claim 1, characterized in that: The step of analyzing the data to be encrypted to determine the sensitivity of the data to be encrypted includes: Obtaining content distribution of the data to be encrypted, and decomposing the data to be encrypted according to the content distribution to obtain several data segments; Determine the content information contained in each data segment, and evaluate the content information contained in each data segment to determine the sensitivity of each data segment.

3. A vertical encryption authentication method for power monitoring according to claim 2, characterized in that: The step of evaluating the content information contained in each data segment to determine the sensitivity level of each data segment includes: Analyze the content information contained in the data fragments to determine the key information related to the sensitivity level; Determine the correlation between each key information and the sensitivity level, and calculate the sum of the correlations between all key information and the sensitivity level; Calculate the ratio of each relevance to the total, and use the ratio as the weight corresponding to each key information; Each key information is evaluated and valued by the expert evaluation method to obtain the evaluation value of each key information; The evaluation value of each key information is weightedly added to the corresponding weight to obtain the sensitivity value of each data segment, and the sensitivity level of each data segment is determined according to the preset sensitivity value range-sensitivity level mapping table.

4. A vertical encryption authentication method for power monitoring according to claim 3, characterized in that: The content information contained in the data fragment is analyzed to determine key information related to the sensitivity, including: Obtain all information from the content information contained in the data fragment and analyze the relevance of each information to the sensitivity level; The information whose relevance exceeds the preset value is screened out and determined as key information related to the sensitivity level.

5. A vertical encryption authentication method for power monitoring according to claim 3, characterized in that: The method of segmenting the data to be encrypted according to the sensitivity level and dividing the segmented data to be encrypted into different levels includes: The data to be encrypted is divided according to the sensitivity level, and data segments with the same sensitivity level are merged to obtain a plurality of data segment sets; The sensitivity level of each data segment set is obtained, and the data segment set with the lowest sensitivity level is divided into low-level data to be encrypted, the data segment set with the highest sensitivity level is divided into high-level data to be encrypted, and the remaining data segment sets are divided into medium-level data to be encrypted.

6. A vertical encryption authentication method for power monitoring according to claim 5, characterized in that: The step of determining the encryption algorithm of the data to be encrypted according to the level, and encrypting the data to be encrypted at different levels according to the encryption algorithm, includes: For low-level data to be encrypted, a symmetric encryption algorithm is used to encrypt the low-level data to be encrypted; For the middle-level data to be encrypted, an asymmetric encryption algorithm is used to encrypt the middle-level data to be encrypted; For high-level data to be encrypted, an asymmetric encryption algorithm is used to encrypt the key, and a symmetric encryption algorithm is used to encrypt the high-level data to be encrypted.

7. A vertical encryption authentication method for power monitoring according to claim 6, characterized in that: The encrypted data at different levels are hashed to generate a summary, and the summary is signed to complete the authentication of the encrypted data at different levels, including: According to the levels of the encrypted data to be encrypted from low to high, the number of bits of the hash value for hashing the encrypted data to be encrypted is increased in sequence, and the number of bits of the hash value for different levels after encryption is generated from small to large; For low-level data to be encrypted, a symmetric encryption algorithm is used to encrypt the summary. For mid-level data to be encrypted, an asymmetric encryption algorithm is used to encrypt the summary. The algorithm encrypts the key. For high-level data to be encrypted, a hybrid encryption algorithm is used to encrypt the summary. The encrypted data, digests and digital signatures at different levels are stored together to complete the authentication of the encrypted data at different levels.

8. A vertical encryption authentication system for power monitoring, characterized in that: include: An analysis module, used for obtaining the data to be encrypted from power monitoring, analyzing the data to be encrypted, and determining the sensitivity level of the data to be encrypted; A partitioning module is used to partition the data to be encrypted according to the sensitivity level and to divide the partitioned data to be encrypted into different levels; The encryption module is used to determine the encryption algorithm of the data to be encrypted according to the level, and encrypt the data to be encrypted at different levels according to the encryption algorithm; The authentication module is used to perform hash processing on the encrypted data at different levels, generate a summary, and sign the summary to complete the authentication of the encrypted data at different levels.

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