CN117615372A - Communication security detection system and method of satellite-ground cooperative system - Google Patents

Communication security detection system and method of satellite-ground cooperative system Download PDF

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Publication number
CN117615372A
CN117615372A CN202311563000.8A CN202311563000A CN117615372A CN 117615372 A CN117615372 A CN 117615372A CN 202311563000 A CN202311563000 A CN 202311563000A CN 117615372 A CN117615372 A CN 117615372A
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China
Prior art keywords
ciphertext
data
satellite
communication
key data
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CN202311563000.8A
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Inventor
江俊飞
王磊
鄂盛龙
罗颖婷
饶章权
魏瑞增
石墨
蔡泓威
阮迪航
陈超
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Guangdong Power Grid Co Ltd
Electric Power Research Institute of Guangdong Power Grid Co Ltd
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Guangdong Power Grid Co Ltd
Electric Power Research Institute of Guangdong Power Grid Co Ltd
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Priority to CN202311563000.8A priority Critical patent/CN117615372A/en
Publication of CN117615372A publication Critical patent/CN117615372A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18513—Transmission in a satellite or space-based system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The invention provides a communication security detection system and a method of a satellite-ground cooperative system, wherein the system comprises the following steps: satellite positioning module: the communication encryption module is used for acquiring satellite positioning information of the ground mobile terminal and an area high-definition satellite map: the method comprises the steps of analyzing data in satellite positioning information, encrypting the data, obtaining first ciphertext key data and second ciphertext key data, and performing cross transmission; decryption module: the method is used for acquiring second ciphertext key data from the local storage module, acquiring first ciphertext key data and the regional high-definition satellite map from the communication monitoring background, and decrypting based on the regional high-definition satellite map, the first ciphertext key data and the second ciphertext key data to obtain satellite positioning information of the ground mobile terminal. The system provided by the invention carries out cross transmission of the encrypted ciphertext and the secret key of the transmission information, strengthens the protection of data transmission, avoids leakage of the data information in the transmission process, and ensures the safety of the data information in the transmission process.

Description

Communication security detection system and method of satellite-ground cooperative system
Technical Field
The invention relates to the technical field of communication security detection, in particular to a communication security detection system and method of a satellite-ground cooperative system.
Background
Satellite-ground cooperative systems are also continuously developing along with the technical development of communication satellites. With the continuous improvement of satellite communication capacity, the satellite communication system must initiate paging to the terminal to establish communication connection when there is a communication demand due to the mobility of the satellite communication terminal in the satellite-ground cooperative system, so in order to ensure the success rate and accuracy of paging, the satellite-ground cooperative system needs to perform effective position management and paging to the terminal. The general satellite communication system centrally manages the position information of all terminals in the ground control center, and the terminals report the position information to the ground control center through satellites, so that the communication safety of the satellite-ground cooperative system needs to be detected and maintained.
Under the above background, the prior art discloses a satellite-ground collaborative paging method of a satellite communication system, which firstly classifies terminals and performs initial position management after network access registration according to different types of the terminals; then the ground area control center and the on-board processing unit cooperate to initiate paging to the called terminal, and according to different terminals, the on-board processing unit or the ground area control center searches the position of the called terminal and performs paging and adopts a combined information encryption transmission method; and finally, carrying out position update management on the terminal, and ensuring that a ground area control center or an on-board processing unit timely records the latest terminal position information. The method can realize the efficient paging and communication safety management of the terminal, but establishes communication connection by identifying the ID of the terminal, and when the transmission information is encrypted, the ciphertext and the secret key are transmitted simultaneously, so that the safety in the transmission process is difficult to ensure.
Disclosure of Invention
The invention aims to provide a communication security detection system and a communication security detection method for a satellite-ground cooperative system, which are used for solving the technical problems.
In order to solve the technical problem, the invention provides a communication security detection system of a satellite-ground cooperative system, comprising:
satellite positioning module: the method comprises the steps of acquiring satellite positioning information of a ground mobile terminal and a regional high-definition satellite map, and synchronizing the regional high-definition satellite map to a communication monitoring background;
communication encryption module: the method comprises the steps of analyzing data in satellite positioning information, encrypting the data, and sending first ciphertext key data and second ciphertext key data obtained by encryption to a communication monitoring background and a local storage module in a crossing manner;
communication monitoring background: the decryption module is used for receiving the first ciphertext key data sent by the communication encryption module and is in communication connection with the decryption module;
a local storage module: the communication encryption module is used for storing second ciphertext key data from the communication encryption module and is in communication connection with the decryption module;
decryption module: the method is used for acquiring second ciphertext key data from the local storage module, acquiring first ciphertext key data and the regional high-definition satellite map from the communication monitoring background, and decrypting based on the regional high-definition satellite map, the first ciphertext key data and the second ciphertext key data to obtain satellite positioning information of the ground mobile terminal.
The system provided by the scheme carries out cross transmission on the encrypted ciphertext and the secret key of the transmission information, strengthens the protection of data transmission, avoids leakage of the data information in the transmission process, and ensures the safety of the data information in the transmission process.
Further, the system further comprises: and a safety detection module: the method comprises the steps of carrying out data interception on a communication monitoring background at regular time to obtain first ciphertext key data; decrypting the ciphertext through a key in the first ciphertext key data, if the ciphertext cannot be decrypted, detecting the ciphertext, and feeding the acquired first ciphertext key data back to the communication monitoring background; otherwise, judging that the communication monitoring background is abnormal.
Further, the system further comprises: cloud storage server: and the cloud storage device is used for receiving the regional high-definition satellite map and the first ciphertext key data transmitted by the communication monitoring background and carrying out cloud storage on the data.
Further, the system further comprises: a location sharing module: for sharing satellite positioning information of the ground mobile terminal with other terminals communicatively coupled to the location sharing module. The position sharing module synchronizes the regional high-definition satellite map to the communication monitoring background through a wireless communication network provided by the wireless communication module, and sends satellite positioning information to surrounding mobile terminals. The location sharing module can also acquire the location information of other surrounding mobile terminals to share the location information with the current ground mobile terminal.
In the scheme, a user can log in the ground mobile terminal through the private key, and the position sharing module obtains the authority of accessing the data of the communication monitoring background; meanwhile, part of the rights can also access the cloud storage server to acquire necessary data from the cloud storage server. According to the scheme, the authority of accessing the data of the communication monitoring background can be obtained only after the user finishes logging in the ground mobile terminal, so that the safety of the data during position sharing is ensured.
Further, the wireless communication module comprises a wireless communication controller and a wireless channel unit, wherein the wireless communication controller packages and caches data to be transmitted and distributes the data to the vehicle-mounted wireless channel unit for transmission; the wireless communication network used by the wireless communication module may include a short-range wireless communication network such as LoRaWAN, NB-IoT, or Bluetooth.
Further, in the communication encryption module, the data in the satellite positioning information is assumed to be analyzed to obtain a data plaintext M, and then the data plaintext M is divided into a long plaintext M1 and a short plaintext M2; wherein:
encrypting the long plaintext M1 by adopting an RSA encryption method to obtain a first ciphertext C1 and a first secret key K1;
encrypting the short plaintext M2 by adopting a DES encryption method to obtain a second ciphertext C2 and a second secret key K2;
and sending the first ciphertext C1 and the second key K2 as first ciphertext key data to a communication monitoring background, and simultaneously sending the second ciphertext C2 and the first key K1 as second ciphertext key data to a local storage module.
According to the scheme, the communication encryption module is used for dividing the data, encrypting the two sections of plaintext data respectively, and sending the first ciphertext key data and the second ciphertext key data to the communication monitoring background and the local storage module in a crossing manner, so that the protection of data transmission can be enhanced, the leakage of data information in the transmission process is avoided, and the safety of the data information in the transmission process is ensured.
Further, the satellite positioning module comprises a global positioning system, a Beidou satellite navigation system, a Galileo positioning system or a George system.
The invention also provides a communication security detection method of the satellite-ground cooperative system, which is realized based on the communication security detection system of the satellite-ground cooperative system and comprises the following steps:
acquiring satellite positioning information of a ground mobile terminal and a regional high-definition satellite map, and synchronizing the regional high-definition satellite map to a communication monitoring background;
analyzing and encrypting data in the satellite positioning information through a communication encryption module, and sending the encrypted first ciphertext key data and the encrypted second ciphertext key data to a communication monitoring background and a local storage module in a crossing manner;
and decrypting according to the regional high-definition satellite map, the first ciphertext key data and the second ciphertext key data to obtain satellite positioning information of the ground mobile terminal.
Further, the method further comprises the steps of: intercepting data in a communication channel of a communication monitoring background at regular time to intercept first ciphertext key data, decrypting ciphertext of the first ciphertext key data through a key in the first ciphertext key data, and if the first ciphertext key data cannot be decrypted, detecting and transmitting the intercepted data to the communication monitoring background; otherwise, determining that the communication is abnormal.
Further, the analyzing and encrypting the data in the satellite positioning information, and cross-transmitting the first ciphertext key data and the second ciphertext key data obtained by encryption, specifically:
analyzing the data in the satellite positioning information to obtain a data plaintext, and dividing the data plaintext into a long plaintext and a short plaintext;
encrypting the long plaintext by adopting an RSA encryption method to obtain a first ciphertext and a first secret key;
encrypting the short plaintext by adopting a DES encryption method to obtain a second ciphertext and a second secret key;
and the first ciphertext and the second secret key are used as first ciphertext key data, and the second ciphertext and the first secret key are used as second ciphertext key data for cross transmission.
Further, the method further comprises the steps of: and uploading the regional high-definition satellite map and the encrypted data to a cloud server through a communication monitoring background, and providing an access interface for the position sharing module by the communication monitoring background.
Further, the decrypting according to the regional high definition satellite map, the first ciphertext key data and the second ciphertext key data to obtain satellite positioning information of the ground mobile terminal specifically includes:
acquiring a regional high-definition satellite map, a first ciphertext C1 and a second key K2 by reading data of a communication monitoring background, and simultaneously reading data of a local storage module to acquire the second ciphertext C2 and the first key K1;
the first cipher text C1 is decrypted by the first key K1 to obtain a long plaintext M1 through an RSA decryption method, the second cipher text C2 is decrypted by the second key K2 to obtain a short plaintext M2 through a DES decryption method, and satellite positioning information of the ground mobile terminal is obtained.
The scheme can also carry out real-time position sharing on the ground mobile terminal and other ground mobile terminals through the position sharing module.
According to the communication security detection system and the communication security detection method for the satellite-ground cooperative system, the plaintext M in the data is divided into 2 sections of long plaintext M1 and 2 sections of short plaintext M2; encrypting the long plaintext M1 by an RSA encryption method to obtain a first ciphertext C1, and storing a first secret key K1; encrypting the short plaintext M2 by a DES encryption method to obtain a second ciphertext, and storing a second secret key K2; the communication encryption module is used for dividing data, encrypting two sections of data respectively, and sending ciphertext and a secret key to the communication monitoring background and the local storage module in a crossing manner, so that the protection of data transmission can be enhanced, the leakage of data information in the transmission process is avoided, and the safety of the data information in the transmission process is ensured. Meanwhile, the safety detection module is used for periodically intercepting and detecting the data in the channel, so that safety monitoring is facilitated in the data transmission process, and the corresponding ciphertext and the secret key are not transmitted in the same channel; when the intercepted cipher text cannot be decrypted by the intercepted cipher key, the safety of the data in the transmission process is illustrated, the safety of data communication is ensured, and the data in the data transmission channel is also convenient to detect.
Drawings
FIG. 1 is a diagram of a communication security detection system of a satellite-ground cooperative system according to an embodiment of the present invention;
fig. 2 is a flowchart of a communication security detection method of a satellite-ground cooperative system according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
When the existing communication security detection technology of the satellite-ground cooperative system encrypts the whole transmission information, when the ciphertext and the secret key are transmitted simultaneously, the security in the transmission process is difficult to ensure, and meanwhile, the security of communication transmission is inconvenient to detect. In order to solve the problem, referring to fig. 1, the present embodiment provides a communication security detection system of a satellite-ground cooperative system, including:
satellite positioning module: the method comprises the steps of acquiring satellite positioning information of a ground mobile terminal and a regional high-definition satellite map, and synchronizing the regional high-definition satellite map to a communication monitoring background;
communication encryption module: the method comprises the steps of analyzing data in satellite positioning information, encrypting the data, and dividing plaintext M in the data into plaintext M1 at the long plaintext and plaintext M2 at the two ends; encrypting the long plaintext M1 by an RSA encryption method to obtain a first ciphertext C1, and storing a first secret key K1; encrypting the short plaintext M2 by a DES encryption method to obtain a second ciphertext C2, and storing a second secret key K2; the communication encryption module sends the first ciphertext C1 and the second secret key K2 to the communication monitoring background, deletes the data of the local storage module, and stores the second ciphertext C2 and the first secret key K1 in the local storage module; the encrypted first ciphertext key data and the encrypted second ciphertext key data are transmitted to a communication monitoring background and a local storage module in a crossing manner;
communication monitoring background: the decryption module is used for receiving the first ciphertext key data sent by the communication encryption module and is in communication connection with the decryption module;
a local storage module: the communication encryption module is used for storing second ciphertext key data from the communication encryption module and is in communication connection with the decryption module;
decryption module: the method is used for acquiring second ciphertext key data from the local storage module, acquiring first ciphertext key data and the regional high-definition satellite map from the communication monitoring background, and decrypting based on the regional high-definition satellite map, the first ciphertext key data and the second ciphertext key data to obtain satellite positioning information of the ground mobile terminal.
The system provided by the embodiment sends the encrypted ciphertext and the secret key of the transmission information in a crossing way, so that the protection of data transmission is enhanced, the leakage of the data information in the transmission process is avoided, and the safety of the data information in the transmission process is ensured.
Further, the system further comprises: and a safety detection module: the method comprises the steps of carrying out data interception on a communication monitoring background at regular time to obtain first ciphertext key data; decrypting the ciphertext through a key in the first ciphertext key data, if the ciphertext cannot be decrypted, detecting the ciphertext, and feeding the acquired first ciphertext key data back to the communication monitoring background; otherwise, judging that the communication monitoring background is abnormal.
Further, the system further comprises: cloud storage server: and the cloud storage device is used for receiving the regional high-definition satellite map and the first ciphertext key data transmitted by the communication monitoring background and carrying out cloud storage on the data.
Further, the system further comprises: a location sharing module: for sharing satellite positioning information of the ground mobile terminal with other terminals communicatively coupled to the location sharing module. The position sharing module synchronizes the regional high-definition satellite map to the communication monitoring background through a wireless communication network provided by the wireless communication module, and sends satellite positioning information to surrounding mobile terminals. The location sharing module can also acquire the location information of other surrounding mobile terminals to share the location information with the current ground mobile terminal.
In the embodiment, a user can log in a ground mobile terminal through a private key, and the position sharing module obtains the authority of accessing the data of the communication monitoring background; meanwhile, part of the rights can also access the cloud storage server to acquire necessary data from the cloud storage server. In the embodiment, the authority of accessing the data of the communication monitoring background can be obtained only after the user finishes logging in the ground mobile terminal, so that the safety of the data during position sharing is ensured.
Further, the wireless communication module comprises a wireless communication controller and a wireless channel unit, wherein the wireless communication controller packages and caches data to be transmitted and distributes the data to the vehicle-mounted wireless channel unit for transmission; the wireless communication network used by the wireless communication module may include a short-range wireless communication network such as LoRaWAN, NB-IoT, or Bluetooth.
Further, in the communication encryption module, the data in the satellite positioning information is assumed to be analyzed to obtain a data plaintext M, and then the data plaintext M is divided into a long plaintext M1 and a short plaintext M2; wherein:
encrypting the long plaintext M1 by adopting an RSA encryption method to obtain a first ciphertext C1 and a first secret key K1;
encrypting the short plaintext M2 by adopting a DES encryption method to obtain a second ciphertext C2 and a second secret key K2;
and sending the first ciphertext C1 and the second key K2 as first ciphertext key data to a communication monitoring background, and simultaneously sending the second ciphertext C2 and the first key K1 as second ciphertext key data to a local storage module.
According to the embodiment, the data are segmented through the communication encryption module, two sections of plaintext data are encrypted respectively, and the first ciphertext key data and the second ciphertext key data are transmitted to the communication monitoring background and the local storage module in a crossing manner, so that the protection of data transmission can be enhanced, the leakage of data information in the transmission process is avoided, and the safety of the data information in the transmission process is ensured.
In this embodiment, the RSA encryption method specifically includes:
1) Selecting two larger prime numbers m and n;
2) Calculating the product p=m×n, then the euler function of p is Φ (p) =Φ (m) Φ (n);
3) An integer x smaller than phi (p) can be selected, and the mutual quality of x and phi (p) can be satisfied, and then x is used as a design method of the first secret key K1.
In this embodiment, the DES encryption method specifically includes:
1) The encryption round is set as i, 64 bits are input in each round of the DES decryption method, and each 64-bit result is divided into 2 32-bit data processing, and the processing is represented by U0 level L0;
2) It is subjected to 16-round product transformation F (), and the logic of each round of transformation is as follows:
L i ＝U i_1 ⊕F(U i_1 ，K i )
key K in round robin i Is 48 bits in length, input L i-1 32 bits are expanded into 48 bits, the method D is expanded, and the expanded result is then matched with the secret key K i Performing exclusive OR processing, generating 48-bit output by the obtained result through an S transformation function, and finally obtaining 32-bit output through P replacement; the expansion method D achieves the purpose of expanding from 32 bits (4*8) to 48 bits (6*8). The S transform function is completed by 8S boxes, each with 6-bit input and 4-bit output. The binary numbers consisting of the 1 st and 6 th bits in the 6-bit input determine the row, and the intermediate 4-bit binary number determines the column. The decimal numbers at the corresponding positions are converted into 4-bit binary numbers to be output; the P-permutation converts 48 bits to a 32-bit output.
Further, the satellite positioning module includes a global positioning system, a beidou satellite navigation system, a galileo positioning system or a gnus system, and in a preferred implementation of this embodiment, the positioning system is a global positioning system GPS and a beidou satellite navigation system.
Referring to fig. 2, the present embodiment provides a communication security detection method of a satellite-ground cooperative system, which is implemented based on a communication security detection system of a satellite-ground cooperative system, and includes the following steps:
s1: acquiring satellite positioning information of a ground mobile terminal and a regional high-definition satellite map, and synchronizing the regional high-definition satellite map to a communication monitoring background;
s2: analyzing and encrypting data in the satellite positioning information through a communication encryption module, and sending the encrypted first ciphertext key data and the encrypted second ciphertext key data to a communication monitoring background and a local storage module in a crossing manner;
s3: and decrypting according to the regional high-definition satellite map, the first ciphertext key data and the second ciphertext key data to obtain satellite positioning information of the ground mobile terminal.
In this embodiment, the communication encryption module segments the data, encrypts two segments of data respectively, and sends the ciphertext and the secret key to the communication monitoring background and the local storage module in a crossing manner, so that protection of data transmission can be enhanced, leakage of data information in the transmission process is avoided, and safety of the data information in the transmission process is ensured.
Further, the method further comprises the steps of: intercepting data in a communication channel of a communication monitoring background at regular time to intercept first ciphertext key data, decrypting ciphertext of the first ciphertext key data through a key in the first ciphertext key data, and if the first ciphertext key data cannot be decrypted, detecting and transmitting the intercepted data to the communication monitoring background; otherwise, determining that the communication is abnormal.
In this embodiment, when the intercepted secret key cannot decrypt the intercepted ciphertext, it is described that the data is safe in the transmission process, and the data in the channel is periodically intercepted and detected by the security detection module, so that the security monitoring of the data transmission process is facilitated, the corresponding ciphertext and secret key are not transmitted in the same channel, the security of data communication is ensured, and the data in the data transmission channel is also convenient to detect.
Further, the analyzing and encrypting the data in the satellite positioning information, and cross-transmitting the first ciphertext key data and the second ciphertext key data obtained by encryption, specifically:
analyzing the data in the satellite positioning information to obtain a data plaintext, and dividing the data plaintext into a long plaintext and a short plaintext;
encrypting the long plaintext by adopting an RSA encryption method to obtain a first ciphertext and a first secret key;
encrypting the short plaintext by adopting a DES encryption method to obtain a second ciphertext and a second secret key;
and the first ciphertext and the second secret key are used as first ciphertext key data, and the second ciphertext and the first secret key are used as second ciphertext key data for cross transmission.
Further, the method further comprises the steps of: and uploading the regional high-definition satellite map and the encrypted data to a cloud server through a communication monitoring background, and providing an access interface for the position sharing module by the communication monitoring background.
Further, the decrypting according to the regional high definition satellite map, the first ciphertext key data and the second ciphertext key data to obtain satellite positioning information of the ground mobile terminal specifically includes:
acquiring a regional high-definition satellite map, a first ciphertext C1 and a second key K2 by reading data of a communication monitoring background, and simultaneously reading data of a local storage module to acquire the second ciphertext C2 and the first key K1;
the first cipher text C1 is decrypted by the first key K1 to obtain a long plaintext M1 through an RSA decryption method, the second cipher text C2 is decrypted by the second key K2 to obtain a short plaintext M2 through a DES decryption method, and satellite positioning information of the ground mobile terminal is obtained.
The embodiment can also enable the ground mobile terminal and other ground mobile terminals to carry out real-time position sharing through the wireless communication network of the position sharing module. The position sharing among the terminals on different bottom surfaces is realized through the wireless communication network, the safety of data during position sharing is ensured, the data of the local storage module is read through the decryption module, the data of the communication monitoring background is read, the keys corresponding to the two sections of ciphertext can be obtained, the corresponding ciphertext and the keys are not transmitted in the same channel, the safety of data communication is ensured, the decryption of the data is not influenced, and the satellite positioning information of the ground mobile terminal can be obtained after the data decryption.
In one embodiment of the invention, the position sharing module sends the satellite positioning information of the ground mobile terminal to surrounding mobile terminals through the short-distance wireless communication module and acquires the position information of other surrounding mobile terminals, so that the positions of different mobile terminals can be shared in real time. The wireless communication module may include: the wireless communication controller packages and caches the data to be transmitted and distributes the data to the vehicle-mounted wireless channel unit.
According to the communication security detection system and method of the satellite-ground cooperative system, plaintext M in data is divided into 2 sections of long plaintext M1 and 2 sections of short plaintext M2; encrypting the long plaintext M1 by an RSA encryption method to obtain a first ciphertext C1, and storing a first secret key K1; encrypting the short plaintext M2 by a DES encryption method to obtain a second ciphertext, and storing a second secret key K2; the communication encryption module is used for dividing data, encrypting two sections of data respectively, and sending ciphertext and a secret key to the communication monitoring background and the local storage module in a crossing manner, so that the protection of data transmission can be enhanced, the leakage of data information in the transmission process is avoided, and the safety of the data information in the transmission process is ensured. Meanwhile, the safety detection module is used for periodically intercepting and detecting the data in the channel, so that safety monitoring is facilitated in the data transmission process, and the corresponding ciphertext and the secret key are not transmitted in the same channel; when the intercepted cipher text cannot be decrypted by the intercepted cipher key, the safety of the data in the transmission process is illustrated, the safety of data communication is ensured, and the data in the data transmission channel is also convenient to detect.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.

Claims (10)

1. A communication security detection system of a satellite-ground cooperative system, comprising:
satellite positioning module: the method comprises the steps of acquiring satellite positioning information of a ground mobile terminal and a regional high-definition satellite map, and synchronizing the regional high-definition satellite map to a communication monitoring background;
communication encryption module: the method comprises the steps of analyzing data in satellite positioning information, encrypting the data, and sending first ciphertext key data and second ciphertext key data obtained by encryption to a communication monitoring background and a local storage module in a crossing manner;
communication monitoring background: the decryption module is used for receiving the first ciphertext key data sent by the communication encryption module and is in communication connection with the decryption module;
a local storage module: the communication encryption module is used for storing second ciphertext key data from the communication encryption module and is in communication connection with the decryption module;
decryption module: the method is used for acquiring second ciphertext key data from the local storage module, acquiring first ciphertext key data and the regional high-definition satellite map from the communication monitoring background, and decrypting based on the regional high-definition satellite map, the first ciphertext key data and the second ciphertext key data to obtain satellite positioning information of the ground mobile terminal.
2. The communication security detection system of a satellite-ground cooperative system according to claim 1, further comprising:
and a safety detection module: the method comprises the steps of carrying out data interception on a communication monitoring background at regular time to obtain first ciphertext key data; decrypting the ciphertext through a key in the first ciphertext key data, if the ciphertext cannot be decrypted, detecting the ciphertext, and feeding the acquired first ciphertext key data back to the communication monitoring background; otherwise, judging that the communication monitoring background is abnormal.
3. The communication security detection system of a satellite-ground cooperative system according to claim 1, further comprising:
cloud storage server: and the cloud storage device is used for receiving the regional high-definition satellite map and the first ciphertext key data transmitted by the communication monitoring background and carrying out cloud storage on the data.
4. The communication security detection system of a satellite-ground cooperative system according to claim 1, further comprising:
a location sharing module: for sharing satellite positioning information of the ground mobile terminal with other terminals communicatively coupled to the location sharing module.
5. The communication security detection system of a satellite-ground cooperative system according to any one of claims 1 to 4, wherein in the communication encryption module, the data in the satellite positioning information is divided into a long plaintext and a short plaintext assuming that the data is parsed to obtain the data plaintext; wherein:
encrypting a long plaintext by adopting an RSA encryption method to obtain a first ciphertext and a first secret key;
encrypting the short plaintext by adopting a DES encryption method to obtain a second ciphertext and a second secret key;
and sending the first ciphertext and the second key as first ciphertext key data to a communication monitoring background, and simultaneously sending the second ciphertext and the first key as second ciphertext key data to a local storage module.
6. A communication security detection method of a satellite-ground cooperative system, characterized in that the communication security detection method based on the satellite-ground cooperative system according to any one of claims 1 to 5 is realized, and comprises the following steps:
acquiring satellite positioning information of a ground mobile terminal and an area high-definition satellite map;
analyzing and encrypting data in the satellite positioning information, and carrying out cross transmission on first ciphertext key data and second ciphertext key data obtained by encryption;
and decrypting according to the regional high-definition satellite map, the first ciphertext key data and the second ciphertext key data to obtain satellite positioning information of the ground mobile terminal.
7. The communication security detection method of a satellite-ground cooperative system according to claim 6, further comprising: intercepting the first ciphertext key data at fixed time, decrypting the ciphertext of the first ciphertext key data through a key in the first ciphertext key data, and if the first ciphertext key data cannot be decrypted, detecting to pass; otherwise, determining that the communication is abnormal.
8. The method for detecting communication security of satellite-ground cooperative system according to claim 6, wherein the analyzing and encrypting the data in the satellite positioning information, and cross-transmitting the encrypted first ciphertext key data and the encrypted second ciphertext key data, specifically comprises:
analyzing the data in the satellite positioning information to obtain a data plaintext, and dividing the data plaintext into a long plaintext and a short plaintext;
encrypting the long plaintext by adopting an RSA encryption method to obtain a first ciphertext and a first secret key;
encrypting the short plaintext by adopting a DES encryption method to obtain a second ciphertext and a second secret key;
and the first ciphertext and the second secret key are used as first ciphertext key data, and the second ciphertext and the first secret key are used as second ciphertext key data for cross transmission.
9. The method for detecting communication security of a satellite-ground cooperative system according to claim 8, further comprising uploading the regional high-definition satellite map and the first ciphertext key data to a cloud storage server for cloud storage.
10. The method for detecting communication security of a satellite-ground cooperative system according to claim 8, further comprising sharing satellite positioning information obtained from the ground mobile terminal to other terminals.
CN202311563000.8A 2023-11-21 2023-11-21 Communication security detection system and method of satellite-ground cooperative system Pending CN117615372A (en)

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