Wireless communication transmission system based on 5G base station

Abstract

The invention discloses a wireless communication transmission system based on a 5G base station, and relates to the technical field of wireless communication transmission, and the system comprises a management center which is in communication connection with an information receiving module, an information preprocessing module, an information processing module and an information transmission module. Three different information identification codes of a communication link are obtained through a wireless communication transmission technology, a communication link quality inspection code PX is generated, then whether the communication link is consistent before and after information transmission is judged according to the communication link quality inspection code PX, and a first-class encryption scheme or a second-class encryption scheme is selected according to an information type label, so that the information transmission efficiency is improved. According to the second-class encryption scheme, the communication link quality inspection code PX and the communication information are encrypted, and the information safety during wireless communication transmission is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication transmission technology, and specifically to a wireless communication transmission system based on a 5G base station. Background Art

[0002] With the rapid development of Internet technology, wireless communication transmission is widely used in more and more fields. For example, it provides more reliable and efficient communication support for emerging applications such as augmented reality, virtual reality, telemedicine, and autonomous driving, accelerating the innovation and commercialization process in these fields. In the existing technology, there are information security issues in the process of wireless communication transmission. When this kind of wireless communication transmission is used to transmit special information, the information security is low. How to use encryption technology to improve the security of transmitted information in the process of wireless communication transmission is a problem we need to solve. To this end, a wireless communication transmission system based on 5G base stations is now provided. Summary of the invention

[0003] The purpose of the present invention is to provide a wireless communication transmission system based on 5G base stations.

[0004] The object of the present invention can be achieved by the following technical solutions: A wireless communication transmission system based on a 5G base station includes a management center, and the management center is communicatively connected with an information receiving module, an information preprocessing module, an information processing module and an information transmission module; The information receiving module is used to receive the communication information sent by the sender, and perform communication link matching according to the received communication information; The information preprocessing module preprocesses the communication information to obtain corresponding preprocessed communication information; The information processing module is used to encrypt the obtained pre-processed communication information to generate pre-transmission communication information; The information transmission module is used to transmit the obtained pre-transmission communication information, and the received pre-transmission communication information is decrypted by the information receiving module of the receiving party.

[0005] Furthermore, the communication link matching process includes: The information receiving module is composed of several antenna arrays in the 5G base station; the antenna array includes several sub-arrays, and the sub-array includes several antenna units; each of the antenna arrays is provided with a corresponding communication information volume range; each of the sub-arrays is provided with a corresponding frequency service range; the state of the antenna unit includes an idle state and an occupied state, and the maximum transmission rate of each antenna unit is different; The communication information includes an information type tag, an IP address of the information sender, communication content, and an IP address of the information receiver; the information type tag includes a primary tag and a secondary tag; the communication content includes plaintext data, the amount of communication information, and the frequency of the communication information; Assign a primary information identification code to each antenna array, assign a secondary information identification code to each subarray in each antenna array, and assign a tertiary information identification code to each antenna unit in each subarray; Matching the size of the received communication information with the communication information volume range corresponding to each antenna array, and selecting the corresponding antenna array according to the matching result; Matching the frequency of the received communication information with the frequency service range corresponding to each subarray in the corresponding antenna array, and selecting the corresponding subarray according to the matching result; Obtain the antenna units in the idle state, obtain the antenna units corresponding to the maximum value of the maximum transmission rate corresponding to each antenna unit in the idle state, mark them, and select the marked antenna units; if all antenna units are in the occupied state, enter the queue and wait for the idle antenna units to appear; A communication link is constructed according to the selected corresponding antenna array, the subarray in the antenna array, and the antenna unit in the subarray, and a communication link quality inspection code PX corresponding to the constructed communication link is obtained.

[0006] Furthermore, the process of obtaining the communication link quality inspection code PX includes: Obtaining a primary information identification code corresponding to the antenna array in constructing a communication link, a secondary information identification code of the corresponding subarray, and a tertiary information identification code of the corresponding antenna unit; Set three identifiers that are different from each other and are correspondingly associated with the three groups of information identification codes, as well as a primary separator and a secondary separator; The first-level separator is inserted between the first-level information identification code and the second-level information identification code, and the second-level separator is inserted between the second-level information identification code and the third-level information identification code to form the corresponding communication link quality inspection code PX.

[0007] Furthermore, the process of the information preprocessing module obtaining the preprocessed communication information includes: Generate a three-level separator according to the communication link quality inspection code PX; The communication link quality inspection code PX and the communication information are combined by a three-level separator to form pre-processed communication information.

[0008] Furthermore, the process of the information processing module encrypting the pre-processed communication information includes: Selecting a corresponding encryption scheme according to the information type label in the obtained pre-processed communication information; When the information type tag is a primary tag, a type of encryption scheme is used to encrypt the pre-processed communication information; When the information type tag is a secondary tag, a second type of encryption scheme is used to encrypt the pre-processed communication information; The encrypted pre-processed communication information is recorded as pre-transmission communication information.

[0009] Furthermore, the process of encrypting the pre-processed communication information using a type of encryption scheme includes: Obtaining preprocessed communication information; Separating the communication link quality inspection code PX and the communication information through the three-level separator of the pre-processed communication information; The communication link quality inspection code PX is encrypted using the AES symmetric encryption algorithm; The encrypted communication link quality inspection code PX and the communication information are combined through a three-level separator to form pre-transmission communication information.

[0010] Furthermore, the process of encrypting the pre-processed communication information using the second type encryption scheme includes: The communication link quality inspection code PX is separated from the communication information according to the three-level separator in the pre-processed communication information, and the communication link quality inspection code PX is encrypted using the AES encryption algorithm; The plaintext data data of the communication content in the communication information is divided into data blocks according to the segmentation rules; Perform SHA-256 secure hash algorithm processing on each data block to generate a message authentication code MAC; Generate a corresponding and unique initialization vector v for each data block and perform initialization operation on the data block; Generate a corresponding and unique rotation offset k for each data block, move the characters in each data block backward by k positions according to the rotation offset k, and return the characters beyond the data block boundary to the beginning; Reverse each character of the offset data block according to the reversal key rule to form ciphertext information; Pack the encrypted communication link check code PX, the corresponding initialization vector v, the message authentication code MAC group and the ciphertext information into a data packet to form a new communication information; The encrypted communication link quality inspection code PX and the new communication information are combined through a three-level separator to form pre-transmission communication information.

[0011] Furthermore, the process of decoding the pre-transmission communication information by the information receiving module includes: Separate the encrypted communication link quality inspection code PX by the three-level separator in the pre-transmitted communication information; Use the AES decryption algorithm to decrypt the communication link quality inspection code PX; After the communication link quality inspection code PX is decrypted, the corresponding decryption scheme is selected according to the information type label; When the information type tag is a primary tag, a type of decryption scheme is used to decrypt the pre-transmitted communication information; When the information type tag is a secondary tag, a second type of decryption scheme is used to decrypt the pre-transmission communication information.

[0012] Furthermore, the process of using a decryption scheme to decrypt the pre-transmission communication information includes: Separate the encrypted communication link quality inspection code PX by the three-level separator in the pre-transmitted communication information; Use the AES decryption algorithm to decrypt the communication link quality inspection code PX; The decoded communication link quality inspection code PX is split according to the first-level separator and the second-level separator, and the corresponding information identification code is found according to the identifier, and compared with the three groups of information identification codes in the communication link before transmission. According to the comparison results, if they are inconsistent, access is denied, and if they are consistent, the transmitted communication information is received.

[0013] Furthermore, the process of decrypting the pre-transmission communication information using the second type of decryption scheme includes: Separate the encrypted communication link quality inspection code PX by the three-level separator in the pre-transmitted communication information; Use the AES decryption algorithm to decrypt the communication link quality inspection code PX; The communication link quality inspection code PX is split according to the separator, and the corresponding information identification code is found according to the identifier, and compared with the three groups of information identification codes in the communication link before transmission to ensure that the communication links before and after the uploaded pre-transmission communication information are consistent. If they do not meet the requirements, access is denied. Initialize each data block to ensure that each data block is unique; The initialized data block is restored according to the inversion rule to obtain the offset data block; Recover the offset data block, move the offset data block forward k positions according to the rotation offset k, and obtain the data block before the offset; The data block before the offset is processed by the SHA-256 secure hash algorithm to generate a new message authentication code MAC, and then compared with the original message authentication code MAC. If they are consistent, it means that the data has not been tampered with; Reconnect all data blocks according to the segmentation rules to obtain the plaintext data of the original communication content.

[0014] Compared with the prior art, the beneficial effects of the present invention are: through wireless communication transmission technology, three different information identification codes of the communication link are obtained, and a communication link quality inspection code PX is generated, and then the communication link quality inspection code PX is used to determine whether the communication link is consistent before and after information transmission, and a type I encryption scheme or a type II encryption scheme is selected according to the information type label, wherein the type II encryption scheme encrypts both the communication link quality inspection code PX and the communication information, thereby greatly improving the security of information during wireless communication transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the present invention. DETAILED DESCRIPTION

[0016] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0017] like Figure 1 As shown, a wireless communication transmission system based on a 5G base station includes a management center, and the management center is communicatively connected to an information receiving module, an information preprocessing module, an information processing module, and an information transmission module; The information receiving module is composed of a plurality of antenna arrays arranged in a 5G base station and is used to receive and send communication information; The antenna array includes a plurality of sub-arrays, each of which includes a plurality of antenna units; each antenna array is provided with a corresponding communication information volume range; each sub-array is provided with a corresponding frequency service range; the antenna units are divided into an idle state and an occupied state, and the transmission rate of each antenna unit is different; A primary information identification code is assigned to each antenna array, a secondary information identification code is assigned to each subarray in each antenna array, and a tertiary information identification code is assigned to each antenna unit in each subarray, and each information identification code is different from each other; The communication information includes an information type tag, an IP address of the information sender, communication content, and an IP address of the information receiver; the information type tag includes a primary tag and a secondary tag, wherein the communication information with the primary tag is ordinary communication information, and the communication information with the secondary tag is special communication information; the communication content includes plaintext data, the amount of communication information, and the frequency of communication information; After receiving the communication information, the information receiving module selects a corresponding communication link for transmitting the received communication information. The specific process includes: The corresponding antenna array is selected according to the size of the received communication information and the communication information volume range set by the antenna array; Selecting a corresponding subarray according to matching the frequency of the received communication information with the frequency service range of the subarray set in the corresponding antenna array; Select an antenna unit according to the antenna unit status. If the antenna unit status is idle, obtain the maximum transmission rate corresponding to each antenna unit, mark the antenna unit corresponding to the maximum value, and select the antenna unit; if all antenna units are in the occupied state, enter the queue and wait for the idle state to appear; The process of establishing a communication link according to the selected corresponding antenna array, the subarray in the antenna array, and the antenna unit in the subarray, and obtaining the communication link quality inspection code PX includes: Obtaining a primary information identification code of the antenna array in the corresponding communication link, a secondary information identification code of the subarray in the antenna array, and a tertiary information identification code of the antenna unit in the subarray, all of which are binary codes; respectively setting identifiers associated with the primary information identification code, the secondary information identification code, and the tertiary information identification code; Generate a primary separator and a secondary separator according to the primary information identification code, the secondary information identification code and the tertiary information identification code respectively; The first-level separator separates the first-level information identification code and the second-level information identification code, and the second-level separator separates the second-level information identification code and the third-level information identification code to form a corresponding communication link quality inspection code PX; The information preprocessing module processes the communication information and the communication link quality inspection code PX uploaded by the information receiving module. The specific processing process includes: Generate a three-level separator according to the communication link quality inspection code PX; The communication link quality inspection code PX and the communication information are combined by a three-level separator to form pre-processed communication information; Regarding the communication link quality inspection code PX, it is necessary to further explain that the communication link quality inspection code is used to check whether the communication links matched by the sender and the receiver are unified; The information processing module processes the pre-processed communication information uploaded by the information pre-processing module, and the specific processing process includes: According to the information type label in the obtained pre-processed communication information, a corresponding encryption scheme is selected; it should be further explained that in the specific implementation process, the encryption scheme includes a first-class encryption scheme and a second-class encryption scheme; when the information type label is a first-class label, the first-class encryption scheme is selected, and when the information type label is a second-class label, the second-class encryption scheme is selected; The information processing module is used to encrypt the pre-processed communication information according to the selected encryption scheme, and the specific encryption process includes: When the information type tag is a primary tag, a first-class encryption scheme is adopted, and the specific encryption process includes: Obtaining preprocessed communication information; Separating the communication link quality inspection code PX and the communication information through the three-level separator of the pre-processed communication information; The communication link quality inspection code PX is encrypted using the AES symmetric encryption algorithm; The encrypted communication link quality inspection code PX and the communication information are combined through a three-level separator to form pre-transmission communication information.

[0018] When the information type tag is a secondary tag, a second type of encryption scheme is adopted, and the specific encryption process includes: The communication link quality inspection code PX is separated from the communication information according to the three-level separator in the pre-processed communication information, and the communication link quality inspection code PX is encrypted using the AES encryption algorithm; Split the plaintext data of the communication content in the communication information into data blocks according to the segmentation rules to improve the security of the information; It is necessary to further explain the segmentation rule that the segments are segmented in the order of front and back and of equal size; Each data block is processed using the SHA-256 secure hash algorithm to generate a message authentication code (MAC). This can detect whether the information has been tampered with during transmission to improve the authenticity of the information. Generate a corresponding and unique initialization vector v for each data block, perform initialization operations on the data block, and ensure that each data block is unique to improve the uniqueness of the information; Generate a corresponding and unique rotation offset k for each data block, shift the characters in each data block backward by k positions according to the rotation offset k, and return the characters beyond the data block boundary to the beginning to improve the security of the information; Reverse each character of the offset data block according to the reversal key rule to form ciphertext information; It is necessary to further explain the reversal key rule that the reversal key reverses the characters according to the length of three characters. When the characters of the data block are an integer multiple of three characters, they are reversed normally; when the characters of the data block are not an integer multiple of three characters, the remaining characters are not reversed; Pack the encrypted communication link check code PX, the corresponding initialization vector v, the message authentication code MAC group and the ciphertext information into a data packet to form a new communication information; The encrypted communication link quality inspection code PX and the new communication information are combined by a three-level separator to form pre-transmission communication information, and sent to the information transmission module; The information transmission module is used to transmit the pre-transmission communication information and send the pre-transmission communication information to the information receiving module of the receiving party; The information receiving module of the receiving party processes the pre-transmission communication information uploaded by the information processing module, and the specific processing process includes: Separate the encrypted communication link quality inspection code PX by the three-level separator in the pre-transmitted communication information; Use the AES decryption algorithm to decrypt the communication link quality inspection code PX; After the communication link quality inspection code PX is decrypted, it is determined whether the communication information is encrypted and the corresponding decryption scheme is selected; It needs to be further explained that, in the specific implementation process, the decryption scheme includes a first-class decryption scheme and a second-class decryption scheme; When the information type tag is a first-level tag, a decryption scheme is selected. The specific decryption process includes: Separate the encrypted communication link quality inspection code PX by the three-level separator in the pre-transmitted communication information; Use the AES decryption algorithm to decrypt the communication link quality inspection code PX; Decrypt the communication link quality inspection code PX. It should be further explained that the decoded communication link quality inspection code PX is split according to the separator, and the corresponding information identification code is found according to the identifier, and compared with the three groups of information identification codes in the communication link before transmission to ensure that the communication links before and after the uploaded pre-transmission communication information are consistent. If they do not meet the requirements, access is denied, and if they meet the requirements, the transmitted communication information is received; When the information type tag is a secondary tag, it proves that the pre-transmission communication information adopts a second-class encryption scheme, and a second-class decryption scheme is selected. The specific decryption process includes: Separate the encrypted communication link quality inspection code PX by the three-level separator in the pre-transmitted communication information; Use the AES decryption algorithm to decrypt the communication link quality inspection code PX; The communication link quality inspection code PX is split according to the separator, and the corresponding information identification code is found according to the identifier, and compared with the three groups of information identification codes in the communication link before transmission to ensure that the communication links before and after the uploaded pre-transmission communication information are consistent. If they do not meet the requirements, access is denied. Initialize each data block to ensure that each data block is unique; The initialized data block is reversed again according to the reverse key rule to obtain the offset data block; Regarding the reversal operation again, it is necessary to further explain that the characters are reversed according to the length of three characters according to the reversal key, and the reversal operation is also restored according to three characters. When the characters of the data block are an integer multiple of three characters, the reversal operation is performed again; when the characters of the data block are not an integer multiple of three characters, the reversal operation is performed by reading three characters each time, and the remaining characters are not reversed; For example: Set the string corresponding to the initialization data block to ABCDEFGHIJK; When encrypting a data block, every three characters of the initialization data block are reversed according to the reverse key rule, and the result is CBAFEDIHGJK; When decrypting the data block, every three characters of the encrypted initialization data block are reversed again according to the reverse key rule, and the result is ABCDEFGHIJK; According to the decrypted result, the data block can be restored to the unencrypted data block by reversing the operation again; Restore the offset data block, move the offset data block forward k positions according to the rotation offset k, and obtain the original data block; The SHA-256 secure hash algorithm is used to process the data block after the offset is restored to generate a new message authentication code MAC, which is compared with the original message authentication code MAC. If they are consistent, it means that the data has not been tampered with, that is, the original communication information is obtained; The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A wireless communication transmission system based on a 5G base station, including a management center, characterized in that: The management center is communicatively connected with an information receiving module, an information preprocessing module, an information processing module and an information transmission module; The information receiving module is used to receive the communication information sent by the sender, and perform communication link matching according to the received communication information; The information preprocessing module preprocesses the communication information to obtain corresponding preprocessed communication information; The information processing module is used to encrypt the obtained pre-processed communication information to generate pre-transmission communication information; The information transmission module is used to transmit the obtained pre-transmission communication information, and the received pre-transmission communication information is decrypted by the information receiving module of the receiving party.

2. The wireless communication transmission system based on 5G base station according to claim 1, characterized in that: The communication link matching process includes: The information receiving module is composed of several antenna arrays in the 5G base station; the antenna array includes several sub-arrays, and the sub-array includes several antenna units; each of the antenna arrays is provided with a corresponding communication information volume range; each of the sub-arrays is provided with a corresponding frequency service range; the state of the antenna unit includes an idle state and an occupied state, and the maximum transmission rate of each antenna unit is different; The communication information includes an information type tag, an IP address of the information sender, communication content, and an IP address of the information receiver; the information type tag includes a primary tag and a secondary tag; the communication content includes plaintext data, the amount of communication information, and the frequency of the communication information; Assign a primary information identification code to each antenna array, assign a secondary information identification code to each subarray in each antenna array, and assign a tertiary information identification code to each antenna unit in each subarray; Matching the size of the received communication information with the communication information volume range corresponding to each antenna array, and selecting the corresponding antenna array according to the matching result; Matching the frequency of the received communication information with the frequency service range corresponding to each subarray in the corresponding antenna array, and selecting the corresponding subarray according to the matching result; Obtain the antenna units in the idle state, obtain the antenna units corresponding to the maximum value of the maximum transmission rate corresponding to each antenna unit in the idle state, mark them, and select the marked antenna units; if all antenna units are in the occupied state, enter the queue and wait for the idle antenna units to appear; A communication link is constructed according to the selected corresponding antenna array, the subarray in the antenna array, and the antenna unit in the subarray, and a communication link quality inspection code PX corresponding to the constructed communication link is obtained.

3. The wireless communication transmission system based on 5G base station according to claim 2, characterized in that: The process of obtaining the communication link quality inspection code PX includes: Obtaining a primary information identification code corresponding to the antenna array in constructing a communication link, a secondary information identification code of the corresponding subarray, and a tertiary information identification code of the corresponding antenna unit; Setting three identifiers that are different from each other and are correspondingly associated with the three groups of information identification codes and a primary separator and a secondary separator; The first-level separator is inserted between the first-level information identification code and the second-level information identification code, and the second-level separator is inserted between the second-level information identification code and the third-level information identification code to form the corresponding communication link quality inspection code PX.

4. The wireless communication transmission system based on 5G base station according to claim 3, characterized in that: The process of obtaining pre-processed communication information by the information pre-processing module includes: Generate a three-level separator according to the communication link quality inspection code PX; The communication link quality inspection code PX and the communication information are combined by a three-level separator to form pre-processed communication information.

5. The wireless communication transmission system based on 5G base station according to claim 4, characterized in that: The process of the information processing module encrypting the pre-processed communication information includes: Selecting a corresponding encryption scheme according to the information type label in the obtained pre-processed communication information; When the information type tag is a primary tag, a type of encryption scheme is used to encrypt the pre-processed communication information; When the information type tag is a secondary tag, a second type of encryption scheme is used to encrypt the pre-processed communication information; The encrypted pre-processed communication information is recorded as pre-transmission communication information.

6. The wireless communication transmission system based on 5G base station according to claim 5, characterized in that: The process of encrypting the preprocessed communication information using a type of encryption scheme includes: Obtaining preprocessed communication information; Separating the communication link quality inspection code PX and the communication information through the three-level separator of the pre-processed communication information; The communication link quality inspection code PX is encrypted using the AES symmetric encryption algorithm; The encrypted communication link quality inspection code PX and the communication information are combined through a three-level separator to form pre-transmission communication information.

7. The wireless communication transmission system based on 5G base station according to claim 5, characterized in that: The process of encrypting the preprocessed communication information using the second type encryption scheme includes: The communication link quality inspection code PX is separated from the communication information according to the three-level separator in the pre-processed communication information, and the communication link quality inspection code PX is encrypted using the AES encryption algorithm; Split the plaintext data of the communication content in the communication information into data blocks of equal size according to the segmentation rules; Perform SHA-256 secure hash algorithm processing on each data block to generate a message authentication code MAC; Generate a corresponding and unique initialization vector v for each data block and perform initialization operation on the data block; Generate a corresponding and unique rotation offset k for each data block, move the characters in each data block backward by k positions according to the rotation offset k, and return the characters beyond the data block boundary to the beginning; Reverse each character of the offset data block according to the reversal key rule to form ciphertext information; Pack the encrypted communication link check code PX, the corresponding initialization vector v, the message authentication code MAC group and the ciphertext information into a data packet to form a new communication information; The encrypted communication link quality inspection code PX and the new communication information are combined through a three-level separator to form pre-transmission communication information.

8. The wireless communication transmission system based on 5G base station according to claim 5, characterized in that: The process of decoding the pre-transmission communication information by the information receiving module includes: Separate the encrypted communication link quality inspection code PX by the three-level separator in the pre-transmitted communication information; Use the AES decryption algorithm to decrypt the communication link quality inspection code PX; After the communication link quality inspection code PX is decrypted, the corresponding decryption scheme is selected according to the information type label; When the information type tag is a primary tag, a type of decryption scheme is used to decrypt the pre-transmitted communication information; When the information type tag is a secondary tag, a second type of decryption scheme is used to decrypt the pre-transmission communication information.

9. The wireless communication transmission system based on 5G base station according to claim 8, characterized in that: The process of decrypting the pre-transmitted communication information using a decryption scheme includes: Separate the encrypted communication link quality inspection code PX by the three-level separator in the pre-transmitted communication information; Use the AES decryption algorithm to decrypt the communication link quality inspection code PX; The decoded communication link quality inspection code PX is split according to the first-level separator and the second-level separator, and the corresponding information identification code is found according to the identifier, and compared with the three groups of information identification codes in the communication link before transmission. According to the comparison results, if they are inconsistent, access is denied, and if they are consistent, the transmitted communication information is received.

10. The wireless communication transmission system based on 5G base station according to claim 8, characterized in that: The process of decrypting the pre-transmitted communication information using the second type of decryption scheme includes: Separate the encrypted communication link quality inspection code PX by the three-level separator in the pre-transmitted communication information; Use the AES decryption algorithm to decrypt the communication link quality inspection code PX; The communication link quality inspection code PX is split according to the separator, and the corresponding information identification code is found according to the identifier, and compared with the three groups of information identification codes in the communication link before transmission to ensure that the communication links before and after the uploaded pre-transmission communication information are consistent. If they do not meet the requirements, access is denied. Initialize each data block to ensure that each data block is unique; The initialized data block is restored according to the inversion rule to obtain the offset data block; Recover the offset data block, move the offset data block forward k positions according to the rotation offset k, and obtain the data block before the offset; The data block before the offset is processed by the SHA-256 secure hash algorithm to generate a new message authentication code MAC, and then compared with the original message authentication code MAC. If they are consistent, it means that the data has not been tampered with; Reconnect all data blocks according to the segmentation rules to obtain the plaintext data of the original communication content.

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