End-to-end speech ciphering method, apparatus and system

A voice encryption and voice stream technology, applied in transmission systems, selection devices, electrical components, etc., can solve the problem that the voice stream of the mobile terminal is not encrypted, and achieve the effect of being easy to implement, simple to implement, and ensuring communication security.

Inactive Publication Date: 2008-11-19
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the existing mobile communication systems, the voice

Method used

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  • End-to-end speech ciphering method, apparatus and system
  • End-to-end speech ciphering method, apparatus and system
  • End-to-end speech ciphering method, apparatus and system

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Embodiment Construction

[0035] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0036] Such as figure 1 As shown, it is a schematic flow chart of an embodiment of the end-to-end voice encryption method of the present invention. In this embodiment, the end-to-end voice encryption process includes the following steps:

[0037] Step 101, the first mobile terminal in the call state receives the key information sent by the KMC through a short message;

[0038] Step 102, the first mobile terminal establishes an encrypted conversation channel with the second mobile terminal at the other end of the conversation that has received the key information;

[0039] Step 103, after establishing an encrypted conversation channel, the first mobile terminal conducts an encrypted conversation with the second mobile terminal according to the key information.

[0040] The existing voice encryption and decryption mod...

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Abstract

The invention relates to an end-to-end speech encryption method which includes the steps that a first mobile terminal in the conversation mode receives the key information sent by the key management server through a short message and establishes an encryption conversation channel with a second mobile terminal which is the other end of the conversation and receives the key information; when the encryption channel is established, the first mobile terminal has the encrypted conversation with the second mobile terminal according to the key information. The invention also relates to an end-to-end speech encryption device and a system. The called and calling parties in the conversation mode receive the key information sent by the key management server through short messages and realize the encrypted conversation according to the key information so that the end-to-end conversation encryption processing is realized and the communication security is guaranteed; besides, the short message mode has the advantages of simple realization and easy implementation.

Description

technical field [0001] The invention relates to the field of mobile communication security, in particular to an end-to-end voice encryption method, device and system. Background technique [0002] With the wide application of mobile communication technology, the flexibility and convenience brought by mobile network are changing our life. The application of mobile communication network involves huge economic interests of individuals and society, so communication security is a key factor in the development of mobile network application. [0003] In existing mobile communication systems, voice streams of civilian mobile terminals are mostly not encrypted. Such as: GSM, WCDMA, CDMA2000, etc., their circuit switching networks are all designed for non-encrypted telephones, and the mobile switching center in the mobile network is only responsible for communication control and voice switching. Although some mobile networks can encrypt the wireless transmission part; but for some s...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04Q7/38
Inventor 龙彪李宝荣杨维忠孙宇张琳峰林奕琳林衡华肖海
Owner CHINA TELECOM CORP LTD
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