Method and system for locking SIM (subscriber identity module) card by utilizing hardware

A hardware lock, the only technology, applied in the field of hardware lock SIM card, can solve the problems of low security, unsuccessful lock card, increased hardware cost, etc., to achieve security, avoid low security, and meet SIM card lock required effect

Active Publication Date: 2013-06-12
HUIZHOU TCL MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Nowadays, when developing wireless mobile communication devices such as mobile phone data cards or 3G routers, network operators will have the requirement to lock the SIM card (that is, lock the network). The security of ordinary pure software SI...

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  • Method and system for locking SIM (subscriber identity module) card by utilizing hardware
  • Method and system for locking SIM (subscriber identity module) card by utilizing hardware
  • Method and system for locking SIM (subscriber identity module) card by utilizing hardware

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] The method for hardware locking the SIM card of the present invention can be applied to mobile phones, data cards, 3G routers and other wireless mobile communication devices that use SIM cards, using existing hardware conditions, based on the identification ID of the current mainstream standard NAND memory on the mobile device The network information corresponding to the SIM card is encrypted to achieve the purpose of setting a unique network for the mobile device containing the SIM card, and to meet the requirements of the network operator to lock the SIM card.

[0036] figure 1...

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Abstract

The invention discloses a method and a system for locking an SIM (subscriber identity module) card by utilizing hardware. The method comprises the following steps that when equipment starts for the first time, an identification ID of an NAND memory and a country code and a network code of a PLMN (public land mobile network) corresponding to a preset SIM card are read, a safe key is figured out through the operation of the identification ID, the country code and the network code, and the safe key is stored; when the equipment leaves the factory and starts normally after the SIM card is inserted into the equipment, a new key is figured out through the operation of the country code and the network code of the PLMN corresponding to the current SIM card, and the identification ID; the new key is compared with the safe key, if the new key is consistent with the safe key, the equipment is used normally; and if not, the network function is disabled. According to the method and the system for locking the SIM card by utilizing hardware, on the basis of not increasing a chip, the identification ID of the NAND memory of the current system is matched with the SIM card in a software mode, so that the safety on locking the SIM card with hardware is realized. The problem that the traditional software-only SIM card locking is not high in safety, and the cost is increased as a hardware chip is arranged is avoided. The requirements of network operators on locking SIM cards are well met.

Description

technical field [0001] The invention relates to the field of mobile terminals, in particular to a method and system for hardware locking a SIM card. Background technique [0002] Nowadays, when developing wireless mobile communication devices such as mobile phone data cards or 3G routers, network operators will have the requirement to lock the SIM card (that is, lock the network). The security of ordinary pure software SIM card locking is not high. Some vendors have begun adding new chips for hardware locking to improve security. However, this will increase additional hardware costs, and sometimes the card lock fails, resulting in a problem of low security. [0003] Therefore, the prior art still needs to be improved and developed. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a method and system for realizing hardware lock SIM card by utilizing the unique ID number of NAND memory, which can realize hardware ...

Claims

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Application Information

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IPC IPC(8): H04W8/24H04W12/04H04W88/02H04W12/041H04W12/06
Inventor 李洋
Owner HUIZHOU TCL MOBILE COMM CO LTD
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