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Method and system for protecting smart card data

A data protection and smart card technology, applied in the direction of selection device, radio/inductive link selection arrangement, etc., can solve the problems that the data cannot be read again, restrict the convenience of legitimate users to access the address book, etc.

Inactive Publication Date: 2009-01-28
MITAC COMP (SHUN DE) LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the PUK code has a ten-time input limit. After entering the PUK code ten times, all the data in the SIM card will not be read out again.
In this way, although it can prevent illegal users from accessing the address book, it also limits the convenience of legitimate users to access the address book

Method used

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  • Method and system for protecting smart card data
  • Method and system for protecting smart card data
  • Method and system for protecting smart card data

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Embodiment Construction

[0020] image 3 It is a schematic diagram of a preferred embodiment of the present invention. The present invention provides a smart card (SmartCard) data protection method and system for protecting the data read and written in the smart card. In the present invention, a smart card especially refers to a SIM (Subscriber Identity Model, SIM) card 100 used in a mobile communication device, hereinafter referred to as the SIM card 100 . This embodiment of the present invention includes a SIM card 100 , an operating terminal 310 , a data access interface 320 and a data protection system 330 .

[0021] The SIM card 100 is used for storing personal communication data, and the SIM card 100 further includes several data frames 110 for storing data respectively. Each data frame 110 at least includes a first data field 111 and several data fields. Assume here that the first data field 111 is used to store the caller's first phone number, while the other data fields are used to store t...

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PUM

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Abstract

The invention provides a data protection method for an intelligent card and a system thereof, wherein a user selects a data frame in the intelligent card through a data access interface, and inputs the data into the data frame. The data protection system comprises a data protection module, an encoding / decoding module and a data storage module. The data protection module is respectively coupled to the data access interface and the intelligent card. The encoding / decoding module is coupled to the data protection module and is used to produce an encrypted data frame. The data protection module stores a disguised data frame into the intelligent card. When the data frame is to be accessed, the data access interface can read the disguised data frame corresponding to the data frame. The data protection method protects special items in an address book by writing disguised data into the data frame in the intelligent card. A user does not need to encrypt all address books in an SIM card in order to lock the special items.

Description

technical field [0001] The invention relates to a data access protection method and system of a smart card, in particular to a data access protection method and system of a subscriber identification module used in a mobile communication device. Background technique [0002] In the modern society with advanced communication, mobile phone has become the necessary portable communication device for everyone. The address book used for contacting in mobile phones is an indispensable basic function. In the past, the address book could only record the phone number of the called person, but now the address book can be used to record other relevant data of the called person, for example, the called person's birthday, home phone number, home address, company address, fax number or e-mail, etc. [0003] Generally speaking, the user will store the address book in a Subscriber Identity Model (SIM), hereinafter referred to as a SIM card. The SIM card is composed of a central processing ...

Claims

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Application Information

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IPC IPC(8): H04Q7/32H04Q7/38
Inventor 余英蕙
Owner MITAC COMP (SHUN DE) LTD
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