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A voice encryption and decryption synchronous processing method and device

An encryption synchronization and voice encryption technology, which is applied in the field of communication, can solve the problems of time delay, increase the number of times of transmitting encrypted synchronization information, and cannot completely guarantee no frame loss, etc., so as to save data transmission, effectively delay access processing, and synchronize processing simple and efficient effect

Active Publication Date: 2021-10-26
POTEVIO INFORMATION TECH CO LTD
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Problems solved by technology

[0005] The present invention provides a voice encryption and decryption synchronous processing method and device that overcomes the above-mentioned problems or at least partially solves the above-mentioned problems, and solves the problem of TD-LTE broadband trunking voice frames in the prior art at a rate of 20ms per frame and through UDP protocol Under transmission, increasing the number of times to transmit encrypted synchronization information cannot completely guarantee that no frames will be lost, and it will also cause delay problems

Method used

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  • A voice encryption and decryption synchronous processing method and device
  • A voice encryption and decryption synchronous processing method and device
  • A voice encryption and decryption synchronous processing method and device

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Embodiment Construction

[0029] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] like figure 1 Shown, also provide a kind of speech encryption transmission method in the present embodiment, comprise:

[0031]When the calling terminal determines to send a group of voice frames, it obtains the key stream and encrypted synchronization information from the security module and updates them locally, and updates the key stream and encrypted synchronization information of the calling terminal; specifically, in this embodiment , the new key stream and encrypted synchronization information can be obtained from the security module every few frames of voice frames, and then grouped. After all the voice frames of this group are sent out, it is determined th...

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Abstract

The present invention provides a voice encryption and decryption synchronous processing method and device. By sending encrypted synchronous information and encrypted voice frames in a data packet through the user plane at the calling terminal, multiple voice frames share one encrypted synchronous information and divide it into headers. There are two types of frame and following frame. The RTP data packet carrying the first frame carries complete encrypted synchronization information, and the following frame data packet only carries the encrypted synchronization information frame number; several voice packets sharing one encrypted synchronization information carry encrypted The frame number of the synchronization information is the same; after the called terminal receives the data packet, it uses the complete encrypted synchronization information in the first frame to obtain the decryption key stream from the security module to decrypt the frame of voice, and use the key stream to decrypt the follow-up voice received subsequently. Frame decryption, if the first frame is lost, the decryption of the following speech frame is discarded. The encryption and decryption synchronization processing is simple, the synchronization is good, and the transmission efficiency is high. It is suitable for the encryption and decryption of voice frames with high broadband cluster rates, and is especially effective for late access processing.

Description

technical field [0001] The present invention relates to the technical field of communication, and more specifically, to a voice encryption and decryption synchronous processing method and device. Background technique [0002] With the development of social economy and the change of industry demand, TD-LTE (Time Division Long Term Evolution, Time Division Long Term Evolution) broadband trunking featuring large bandwidth, high speed, and all-IP is leading the trunking communication into a new era . The TD-LTE broadband trunking communication system takes the fourth-generation mobile communication technology TD-LTE as the core technology, and integrates the high speed and large bandwidth of TD-LTE with the characteristics of resource sharing, fast call establishment, and command and dispatch in digital trunking technology. , is a broadband digital trunking system integrating voice, data and video. The broadband trunking system based on TD-LTE is divided into components such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
Inventor 郄卫军李瑞林
Owner POTEVIO INFORMATION TECH CO LTD
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