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Repair method and apparatus of SIM card encrypted files

A technology for encrypting files and repairing methods, which is applied in the field of communication, and can solve problems such as the inability to realize the identification of card validity and affecting the Internet access of terminal equipment

Inactive Publication Date: 2016-02-03
QINGDAO HISENSE MOBILE COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the embodiment of the present invention is to provide a method for repairing the encrypted file of the SIM card, so as to solve the problem that the terminal device cannot realize the identification of the validity of the card due to the abnormality of the encrypted file of the SIM card, thereby affecting the realization of functions such as accessing the Internet of the terminal device

Method used

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  • Repair method and apparatus of SIM card encrypted files
  • Repair method and apparatus of SIM card encrypted files
  • Repair method and apparatus of SIM card encrypted files

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Embodiment Construction

[0050] In order to further make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments . Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without making creative efforts all belong to the protection scope of the present invention.

[0051] In the embodiment of the present invention, the terminal device may be a terminal capable of inserting a SIM card, such as a mobile phone or a tablet computer.

[0052] The SIM card encrypted file is automatically created when the terminal device is turned on for the first time, and stored in the EFS / FFS area of ​​the terminal device. It is used to save some encrypted information of the terminal device, such as the loc...

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Abstract

Embodiments of the invention provide a repair method and apparatus of SIM card encrypted files, and relates to the technical field of communication. The problem in the prior art that the validity of an SIM card cannot be identified due to the abnormality of the SIM card encrypted file of a terminal device to influence the implementation of call, internet surfing and other functions. The specific scheme is as follows: judging whether an internal memory space of a first SIM card encrypted file is equal to a standard value, if not, deleting the internal memory space of the first SIM card encrypted file, wherein the standard value is the internal memory space of a normal SIM card encrypted file; and using an encryption algorithm to generate a second SIM card encrypted file based on content information needing to be locked of the terminal device. The repair method and apparatus provided by the embodiments of the invention are used for repairing the SIM card encrypted files.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a method and device for repairing an encrypted file of a SIM card. Background technique [0002] With the rapid development of communication technology, smart terminal devices are playing a bigger role in people's daily life. People can use these terminal devices not only to make voice calls, but also to watch videos and transfer files through the Internet. [0003] For mobile phones and some other terminal devices with SIM cards, in order to realize some functions related to SIM cards such as calling and surfing the Internet, it is necessary to ensure that the SIM card is in a normal working state. When the terminal device inserts the SIM card to perform the initialization process, the SIM card needs to complete the verification of the validity of the SIM card before the SIM card can work normally. The verification of the validity of the SIM needs to read the relevant in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/02
CPCH04W12/02
Inventor 张景新
Owner QINGDAO HISENSE MOBILE COMM TECH CO LTD
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