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International rescue short message information encryption method based on cooperation of Beidou satellite and ground signal

A Beidou satellite and ground signal technology, applied in wireless communication, security communication device, message/mailbox/announcement, etc., can solve problems such as hidden dangers of security and easy interception of message information, and achieve the effect of ensuring accuracy

Active Publication Date: 2022-04-05
TONGJI UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the Beidou satellite navigation system is a global satellite navigation system independently built and operated by China focusing on the needs of national security and economic and social development. Space-time infrastructure, while the communication transmission of the Beidou short message system is based on the two-way link information transmission process between the Beidou user terminal and the ground center station, which can communicate one-to-one and one-to-many. At present, the Beidou short message system During the communication transmission process, the message information is transmitted to the receiving end of the short message in plain text through the data center (ground central station), without any encryption protection processing, which will cause the message information to be easily intercepted and cause serious damage. security risks

Method used

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  • International rescue short message information encryption method based on cooperation of Beidou satellite and ground signal
  • International rescue short message information encryption method based on cooperation of Beidou satellite and ground signal

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Embodiment 1

[0025] see figure 1 , this embodiment provides a method for encrypting international rescue short message information coordinated by Beidou satellites and ground signals, including the following steps:

[0026] Step 1: First generate a pair of homomorphic keys from third-party information or data channels other than China Beidou satellites and international rescue signals, and use them as the homomorphic keys for the whole process of short message communication, and then publicize the homomorphic keys The homomorphic public key of the whole network, and the homomorphic private key is stored in the third-party information or data channel other than China Beidou satellite and international rescue signal;

[0027] Step 2: The user satellite system first splits its own real-time information into information to be transmitted, geographic location information and the same timing information, and transmits it to the onboard short message terminal as satellite telemetry data, and the ...

Embodiment 2

[0038] see figure 2 , this embodiment provides a transmission process of satellite telemetry data and maintenance remote control data, wherein the satellite telemetry data transmission process is: the user satellite system periodically sends the user satellite telemetry data to the satellite-borne short message terminal, and the terminal sends the data to the Beidou After the short message protocol is encapsulated, a short message signal is generated and sent to a specific navigation satellite. In order to meet the requirements of the Beidou short message signal interface, the frequency compensation of the transmitted signal needs to be performed when the short message is transmitted. The No. 3 satellite system inter-satellite link, ground gateway station, Beidou satellite and other links send the telemetry short message signal to the ground short message measurement and control terminal. After the ground short message measurement and control terminal receives the demodulated ...

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Abstract

The invention discloses a Beidou satellite and ground signal collaborative international rescue short message information encryption method, which comprises the following steps that: a third-party information or data channel except a Chinese Beidou satellite and an international rescue signal generates a homomorphic key in the whole short message communication process, and a user satellite system sends satellite telemetry data to a satellite-borne short message terminal; the satellite-borne short message terminal packages and transmits satellite telemetering data to the specific navigation satellite, the specific navigation satellite carries out homomorphic encryption on telemetering short message signals and sends the telemetering short message signals to the ground short message measurement and control terminal, the ground short message measurement and control terminal packages and sends the satellite telemetering data to the satellite measurement and control center for verification, feedback information is generated after verification, and the feedback information is sent to the satellite measurement and control center. The user is online, receives feedback information and updates the geographic position and the same time service; according to the invention, communication encryption is carried out on the satellite short message signal by using a homomorphic encryption method, so that the short message information is prevented from being tampered in the communication transmission process, and meanwhile, after the message is encrypted and output, the receiving terminal can obtain the message information without decryption.

Description

technical field [0001] The invention relates to the technical field of information communication encryption, in particular to a method for encrypting international rescue short message information in coordination with Beidou satellites and ground signals. Background technique [0002] At present, the Beidou satellite navigation system is a global satellite navigation system independently constructed and operated by China focusing on the needs of national security and economic and social development. Space-time infrastructure, and the communication transmission of the Beidou short message system is based on the bidirectional link information transmission process between the Beidou user terminal and the ground central station, which can communicate one-to-one and one-to-many. At present, Beidou short message In the process of communication transmission, the data center (ground central station) transmits the message information in clear text to the short message receiving end w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/14H04W4/90H04W12/03H04L9/00H04B7/185
CPCY02D30/70
Inventor 张雷张家诚欧冬秀石建兵
Owner TONGJI UNIV