Mobile communication system and voice call encryption method thereof

A mobile communication system and a technology for voice calls, applied in the field of voice call encryption, can solve problems such as poor security and low efficiency, and achieve the effect of secure voice calls

Inactive Publication Date: 2010-12-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a mobile communication system, a method for encrypting a voice call in the mobile communication system, and a mobile terminal in the mobil...

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  • Mobile communication system and voice call encryption method thereof
  • Mobile communication system and voice call encryption method thereof
  • Mobile communication system and voice call encryption method thereof

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Embodiment Construction

[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Aiming at the problems of poor security and low efficiency in the technical solution for encrypting and protecting voice calls in the mobile communication system, in the mobile communication system and the method for encrypting voice calls in the mobile communication system of the present invention, the calling terminal generates a For the voice key Kr encrypted / decrypted in the voice call, the network side and the mobile terminal use the shared key factor CK (Cipher Key encryption key) to encrypt and encrypt the voice key Kr transmitted in the call establishment message between the two. Decryption, so that both the calling terminal and the called terminal obtain a shared voice key Kr for voice call encryption / decryption, and both parties use the voice ke...

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Abstract

The invention discloses a mobile communication system and a voice call encryption method in the mobile communication system, and belongs to the technical field of mobile communication. In the mobile communication system, a calling terminal generates a voice key for voice encryption/decryption, and the voice key is encrypted by using a shared key factor of the calling terminal and then transmitted to a network side; the network side decrypts the encrypted voice key according to the shared key factor of the calling terminal, encrypts the voice key by using a shared key factor of a called terminal and transmits the encrypted voice key to the called terminal; and the called terminal decrypts the encrypted voice key by using the shared key factor of the called terminal, and acquires the voice key. The calling terminal and the called terminal perform encrypted voice call by using the voice key. The voice key used by voice communication can be encrypted and transmitted, and the calling and called terminals perform more secure voice call by using the shared voice key.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a mobile communication system and a method for encrypting voice calls in the mobile communication system. Background technique [0002] As the basic business of mobile communication network, voice call service has always been concerned about its security and confidentiality. How to improve the security of the call process and the ability to protect privacy is one of the important research contents of mobile network technology. The mobile network usually has its own communication encryption method. For example, in the UMTS (Universal Mobile Communication System, Universal Mobile Communication System) system, the user's USIM (Universal Subscriber Identity Module, global subscriber identity card) card and the HLR / AuC of the home network. (Home location memory / authentication center) shares a root key Ki (128bit), based on the root key Ki, the mobile terminal and ...

Claims

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Application Information

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IPC IPC(8): H04W12/02H04W12/04H04W12/033H04W12/0431
CPCH04W12/04H04W12/02H04L2463/062H04W12/033
Inventor 于松邓方民曹耀斌张蓬勃
Owner ZTE CORP
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