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CDMA system and method for implementing dynamic distribution of cipher key

A code division multiple access and key technology, which is applied in the field of mobile communication encryption, can solve the problems of not being able to realize the strict security communication of the mobile communication system, not being able to obtain the dynamic key of a single mobile station, and not being able to adapt to the key distribution function, etc. Meet the requirements of convenience and compatibility, ensure reliability, and save development costs

Inactive Publication Date: 2009-01-21
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the field of mobile communication, there are some methods for key distribution. For example, Chinese patent application No. 97191858 proposes a method for key management in mobile communication networks. This invention mainly proposes a method for implementing key The static management method cannot adapt to the dynamic key distribution function, and it cannot realize the strictly confidential communication requirements of one-time pad in the mobile communication system
The Chinese patent No. 99110495 also proposes another method of key distribution in mobile communication services, but this method is aimed at transmitting confidential data to multiple mobile stations in a specified area at the same time, and realizes key distribution It has already been passed to the corresponding mobile station, and it is not applicable to the dynamic key acquisition requirements of a single mobile station in a secure communication system

Method used

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  • CDMA system and method for implementing dynamic distribution of cipher key
  • CDMA system and method for implementing dynamic distribution of cipher key
  • CDMA system and method for implementing dynamic distribution of cipher key

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] Such as figure 1 As shown, in the code division multiple access system that realizes key dynamic distribution that the present invention proposes, comprise mobile station, base station and exchange, be connected by standard Um interface between mobile station and described base station, according to standard Um interface message Interact; the interface between the base station and the switch is a standard A interface, and they exchange messages according to the standard A interface protocol; the mobile station is also connected to the key authentication unit through an internal interface , as an independent functional module, the key authentication unit can be embedded inside the mobile station (as shown in the figure), and can also be hung outside the mobile station. The key information is judged by the key authentication unit on the validity...

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Abstract

The invention provides a code division multiple access system that realizes the cryptographic key dispensing, comprising mobile station, base station and switchboard. The invention is characterized by that, the system also includes, the cryptographic key authentication unit exchanging the mutual cryptographic key information with the mobile station through the internal interface for judging the effectiveness of the cryptographic key, a transfer unit proceeding the short data bursting message interaction with the switchboard, the cryptographic key management and dispensing unit exchanging the related information of the cryptographic key request needed by the key dispensing with the transfer unit through the internal interface. The message used by the invention can realize the confirmation resending function and guarantee the dependability of the transmission of the cryptographic key information on air.

Description

technical field [0001] The invention relates to the technical field of mobile communication encryption, in particular to a code division multiple access system and method for realizing key dynamic distribution. Background technique [0002] In the existing code division multiple access cellular mobile communication system, spread spectrum communication technology and air interface encryption are used to improve the concealment and confidentiality of the cellular mobile communication system to a certain extent, but this common security technology cannot Satisfy the security needs of some mobile communications with high confidentiality requirements. In order to ensure the information security of high-secret mobile communication, it is necessary to support end-to-end secure communication in the system, that is, to interconnect with the security sub-system, and to provide special encryption for encrypted voice / data information in the code division multiple access cellular mobile...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J13/02H04Q7/20H04L9/28H04L9/14H04W12/02
Inventor 谭国平朱龙明何伟崔丽
Owner ZTE CORP
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