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An improved sim card and mobile communication identification method and system

A technology of identity recognition and mobile communication, applied in the field of mobile communication, can solve the problem of SIM card security communication cracking, etc., and achieve the effect of preventing the risk of being cracked and improving security

Active Publication Date: 2021-03-02
ZHEJIANG SHENZHOU QUANTUM NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the Ki in the SIM card is written and fixed when the SIM card leaves the factory. Now there are many ways to crack the Ki. Once the Ki is cracked, the SIM card can be copied in large quantities or its confidential communication is compromised. to crack

Method used

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  • An improved sim card and mobile communication identification method and system
  • An improved sim card and mobile communication identification method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054]In the mobile communication identification system based on the improved SIM card in this embodiment, when a customer goes to the mobile communication network to access the network, the customer is assigned a customer phone number (MSISDN), an international mobile subscriber identity number (IMSI), and a SIM card. card. Write IMSI and other customer information such as various cryptographic algorithms into the customer's SIM card through the card writer.

[0055]There is a key issuing server in the mobile communication network, and the key issuing server is equipped with a true random number generator. From the true random number generated by the true random number generator, a specified number of true random number keys are taken out. The number key is the true random number key issued this time. And write the true random number key into the customer's SIM card. The true random number key is directly stored in the SIM card in plain text, and cannot be taken out through any means....

Embodiment 2

[0066]Compared with Embodiment 1, the SIM card in this embodiment is equipped with a true random number generator chip. After receiving the true random number key from the mobile communication network, the SIM card generates it through its internal true random number generator chip. A true random number encryption key K, and use the true random number encryption key K to encrypt the true random number key into a true random number key in ciphertext form. The true random number key in the form of cipher text can be stored in the memory of the mobile terminal or in an extended storage area of ​​the mobile terminal or in a data storage area in the SIM card. At the same time, the true random number encryption key K will be stored in the SIM card for use in decryption.

[0067]The authentication process of the mobile communication network to the customer SIM card will be given below according to the traditional authentication method, and the authentication process of the customer SIM card t...

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Abstract

The invention discloses an improved SIM card, a mobile communication identification method and a system. An improved SIM card-based mobile communication identification method of the present invention is implemented between the mobile communication network and the SIM card installed in the mobile terminal, including: one of them uses the first authentication key and the random ID from the other party The random number generates a first authentication response, and sends the first authentication response to the other party; the other party uses the random number and the second authentication key to generate a second authentication response, and compares the first authentication response with the second authentication key. The authorization response is used for identification; the first authentication key and the second authentication key are corresponding true random number keys and are pre-distributed between the mobile communication network and the SIM card. In the present invention, the authentication code used by the mobile terminal every time it logs into the mobile communication network is generated by the true random number key shared by the SIM card and the mobile communication network, effectively preventing the risk of the Ki key being cracked in the traditional SIM card.

Description

Technical field[0001]The present invention relates to the field of mobile communication, in particular to an improved SIM card and a mobile communication identity recognition method and system.Background technique[0002]Each customer is assigned a customer phone number (MSISDN, Mobile Subscriber International ISDN / PSTN number) and an International Mobile Subscriber Identification Number (IMSI, International Mobile Subscriber Identification Number) when registering in the mobile communication network. IMSI writes into the customer's SIM card through the SIM card writer, and at the same time generates a unique customer authentication key (authentication key) Ki corresponding to the IMSI in the card writer, which is stored in the SIM card The specific area cannot be read, and at the same time it is stored in the authentication center AUC, which is permanent information. After the customer’s mobile phone is turned on, it will read the IMSI from the SIM card. When the mobile phone logs on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/041H04W12/06H04L9/08
CPCH04L9/0869H04W12/04H04W12/06
Inventor 富尧蔡晓宇钟一民
Owner ZHEJIANG SHENZHOU QUANTUM NETWORK TECH CO LTD