CDMA port-to-port encryption communication system and key distribution method thereof

An encrypted communication system and key distribution technology, which is applied in the key distribution field of CDMA end-to-end encrypted communication, can solve the problems of key management and identity authentication limitations, to ensure security, reduce security risks, and improve communication safety effect

Inactive Publication Date: 2010-01-27
成都卫士通信息产业股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to reduce the security risk of signal transmission on the air interface, security defense technologies such as auth

Method used

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  • CDMA port-to-port encryption communication system and key distribution method thereof
  • CDMA port-to-port encryption communication system and key distribution method thereof
  • CDMA port-to-port encryption communication system and key distribution method thereof

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[0022] All the features disclosed in this specification, or all disclosed methods or steps in the process, except for mutually exclusive features and / or steps, can be combined in any manner.

[0023] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless specifically stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is just one example of a series of equivalent or similar features.

[0024] For the system structure of this embodiment, see the attached figure 1 As shown, a key distribution management center server is deployed in a higher security domain in a CDMA communication network, and the short message center is connected to the key distribution management center server.

[0025] The three-tier management structure of key distribution is as follows figure 2 As shown, the specific distribution method is as follows:

[0026] Initialize the cryp...

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Abstract

The invention discloses a CDMA port-to-port encryption communication system and a key distribution method thereof, the CDMA port-to-port encryption communication system comprises a CDMA network and a terminal mobile telephone thereof, a public switched telephone network and a terminal fixed-line telephone thereof, a short message service center as well as the following three cipher processing units including a cipher chip of a mobile telephone terminal, a key distribution management center (KDMC) and a Firmware cipher module of a gateway mobile switching center. The key distribution management center is used for key distribution management of the communication system. The key distribution is realized by a layered distribution method, i.e. a first layer is an equipment key which is distributed in the process of initialization; a second layer is a key-encryption key and a short message service key which are distributed in startup of an enciphered mobile telephone; and a third layer is a session key which is distributed every time a session is launched between the enciphered mobile telephones. At the same time, by adopting a bidirectional certification technology for key distribution and combination of a key update and remote destroying method, the safety risk in key exposure is reduced, and the communication safety is improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication and information security, in particular to an authentication method between a mobile terminal and a key management and distribution center in CDMA secure communication, in particular to a key distribution method for CDMA end-to-end encrypted communication. Background technique [0002] With the widespread application of mobile communication technology, users have higher and higher requirements for the security of mobile communication. The circuit-switched network adopted by the core network of the existing CDMA is designed for non-encrypted telephone services. The transmission mode of information in the core network may be in plain text, which cannot eliminate the possibility of the message being monitored or stolen in the core network. . For some special industry users, such as the military, government and security departments, it is necessary not only to prevent the call from being...

Claims

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Application Information

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IPC IPC(8): H04W12/04H04W12/06H04W12/033H04W12/0431
Inventor 余秦勇张涛陈福莉
Owner 成都卫士通信息产业股份有限公司
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