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Method and device for protecting codes or data in mobile phone memory

A storage and data technology, applied in program control devices, program loading/starting, preventing unauthorized use of memory, etc., can solve problems such as illegal rewriting, program cannot be executed, application code is not protected, etc., to prevent illegal Tampering, the effect of improving security

Active Publication Date: 2010-03-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] However, this solution has a disadvantage, that is, the application code of the mobile phone is not protected, so there is a possibility of being illegally rewritten, which makes the above solution unable to be implemented

Method used

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  • Method and device for protecting codes or data in mobile phone memory
  • Method and device for protecting codes or data in mobile phone memory
  • Method and device for protecting codes or data in mobile phone memory

Examples

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Embodiment Construction

[0058] The core idea of ​​the present invention is: use the public key of the mobile phone manufacturer in the mobile phone to ensure that the detection program code and the preset feature code of the application program have not been rewritten, then the mobile phone starts the detection program, and extracts the feature code from the code or data that needs to be protected in the mobile phone , compare it with the preset feature code, if they are the same, it means that the code or data to be protected has not been rewritten, and then start the application program.

[0059] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail by citing the following embodiments and referring to the accompanying drawings.

[0060] Figure 4 It is a schematic diagram of the content preset in the memory of the mobile phone of the present invention, which includes the plaintext of the mobile phon...

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Abstract

The invention discloses a method for protecting codes or data in a mobile phone memory. The method is used for utilizing a public key of mobile phone manufactures in the mobile phone memory to ensurethat detecting program codes and presetting feature codes of application programs are not rewritten, the mobile phone then executes the detecting program codes, the feature codes are extracted from the code or the data requiring protection and are compared with the presetting feature codes, if consistence is achieved, that the code or the data requiring protection is not rewritten is represented,and then the application programs are started.

Description

technical field [0001] The invention belongs to the field of mobile terminals, and in particular relates to a method and a device for protecting application program codes and data in a memory of a mobile phone. Background technique [0002] With the maturity and development of electronic technology, mobile phones (also known as mobile terminals) are becoming more and more popular, which brings great convenience to people, meets the fast-paced and efficient social needs, and is very popular among users. In order to better develop customers, some mobile operators sometimes sell mobile phones to users at a price lower than the cost, or even give them away for free. And at the same time, mobile operators require these mobile phones to be locked to the network of the operator, or to lock the SIM card (subscriber identification card) of the operator, which is the so-called network lock card. However, there are some people or organizations in the market. Driven by profit, they ill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/14G06F9/445H04M1/725H04M1/72454
Inventor 李春雨倪睿智李娜娜
Owner ZTE CORP