A method and device for encrypted transmission of multi-choice group short messages
A technology for encrypted transmission and group selection, which is used in secure communication devices, security devices, transmission systems, etc., to achieve the effect of improving efficiency and good confidentiality.
Active Publication Date: 2021-08-06
POTEVIO INFORMATION TECH CO LTD
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Problems solved by technology
[0005] The embodiment of the present invention provides a method and device for encrypted transmission of multi-choice group short messages, which are used to solve the problem of how to improve the efficiency of group short message transmission while ensuring the confidentiality of multi-choice group short message transmission
Method used
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[0051] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0052] figure 1 It is a schematic flowchart of a method for encrypting and transmitting a multi-selection group short message according to an embodiment of the present invention. like figure 1 As shown, the method of this embodiment takes the dispatching console as the execution body, and includes:
[0053] S11: Send a session ke...
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The invention provides a method and device for encrypting and transmitting multi-choice short messages. The method includes: the dispatcher sends a session key request message to the key management machine, the session key request message includes group information of each fixed group in the multi-choice group; receives the encrypted session key group returned by the key management machine, The encrypted session key group includes a first session key and a second session key set, and the second session key set includes a session key encrypted with a group key of each fixed group respectively to the session key; scheduling The station decrypts the first session key with the key of the dispatching station, encrypts the target short message after obtaining the clear session key, and sends the encrypted target short message and the second session key set of each fixed group to the multi-choice group members to complete the target Encrypted transmission of text messages. The embodiment of the present invention uses one letter and one secret, and the confidentiality of multi-choice group short message transmission is good; the repeated sending of each link of the dispatching station, the key management machine, and the base station is avoided, and the short message transmission efficiency is improved.
Description
technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method and device for encrypted transmission of a multi-selection group short message. Background technique [0002] The Time Division Long Term Evolution (TD-LTE) broadband trunking communication system takes the fourth generation mobile communication technology TD-LTE as the core technology, and combines the high speed and large bandwidth of TD-LTE with the resources in the digital trunking technology. It is a broadband digital trunking system integrating voice, data and video by integrating features such as sharing, fast call establishment, and command and dispatch. The broadband trunking system based on TD-LTE is divided into terminal, base station, trunking core network, dispatching station and other components. The TD-LTE broadband trunking communication system provides a wealth of business functions for the terminal. The basic functions include: voi...
Claims
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IPC IPC(8): H04L9/08H04W4/14H04W12/033H04W12/041H04W12/0433H04W12/03
CPCH04L9/0833H04W4/14H04W12/02H04W12/04
Inventor 郄卫军
Owner POTEVIO INFORMATION TECH CO LTD