End-to-end encrypting method and system based on mobile communication network

Abstract

This invention relates to end to end coding method and system based on mobile communication network, which comprises the following steps: adopting codes end to end coding and adopting key management center for whole codes system and adopting keys intelligent cards as terminal end to coded safety module; according to center generating codes flow and decodes flow through or formula on messages and codes to realize end to end coding communication; the said system comprises key management center and terminal interact through center to terminal end with intelligent card.

Description

technical field [0001] The invention relates to an end-to-end encryption method based on a mobile communication network, and also relates to an encryption system adopting the method, which belongs to the field of mobile communication. Background technique [0002] In the existing mobile communication system, whether it is a public mobile communication system or a professional mobile communication system, encryption technology exists. For example, security functions such as authentication and air interface encryption are defined in the GSM system and TETRA standards to solve the security problems of the wireless access part of the system. Network domain security is also defined in the 3G standard, so that the core of mobile communication The nodes between the networks can safely exchange signaling data, that is, to ensure the safe exchange of data between entities of the mobile communication core network. However, these encryption technologies still have information in clear...

AI Technical Summary

Problems solved by technology

However, these encryption technologies still have information in clear text at the nodes of the core network of the communication system, and their security is low, which cannot meet the high guarantees proposed by the military, government and security departments, and some special users. Security Requirements for Confidentiality

[0003] In order to improve security and realize end-to-end encryption of mobile communications, China Patent Application No. 98108859.7 discloses an end-to-end encryption method. The main content of this method is: the calling party terminal uses random numbers sent from the network to generate encryption Key, the encryption key is sent to the called party terminal through the call setup message, so that the users at both ends can use the same key to encrypt / decrypt the call information during communication, but this invention still exists because the network operator knows the encryption key Insecure problems caused by key information, and the implementation is more complicated, the structure of the mobile phone needs to be modified, thus increasing the size and power consumption of the mobile phone

[0004] China Patent Application No. 200410021688.7 discloses another end-to-end encryption method. The wireless terminal user uses an external terminal security device to connect to the Bluetooth mobile station. The external terminal security device supports Bluetooth data communication through Bluetooth technology. Functional GSM mobile station connection, so as to realize the end-to-end encryption of GSM network voice and data services. The biggest problem with this method is the need to use an external mobile security device, which increases the burden on users and brings users Inconvenience

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