Data protection method and device used for terminal external storage card

An external storage and terminal technology, applied in the field of information security, can solve the problems of random reading and tampering of data sources that cannot be stored

Inactive Publication Date: 2013-06-26
DONGGUAN YULONG COMM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and device for data protection of an external memory card of a terminal, so as to overcome the inability to protect the stored data source in the existing technical solutions, which may be read and tampered at will, etc. Security Threat Issue

Method used

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  • Data protection method and device used for terminal external storage card
  • Data protection method and device used for terminal external storage card
  • Data protection method and device used for terminal external storage card

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Embodiment Construction

[0032] In order to make the purpose, technical solution 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.

[0033] According to the embodiment of the present invention, as for how, it is not necessary to bind the terminal, nor to set the data storage card, so that the data storage card can be obtained by others without affecting the normal reading and writing of data by the application. Finally, in the case that the sensitive information is not arbitrarily browsed, copied, transmitted and other threat data, a method for protecting the data of the external memory card of the terminal is provided. Such as figure 1 Shown:

[0034] S101. Store at least one key and a corresponding encryption / decryption algorithm in the terminal.

[0035] Further description of step S101 is that at least one key and corresponding encryption / decryption algorithms ar...

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PUM

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Abstract

The invention provides a data protection method and device used for a terminal external storage card. The data protection method and device used for the terminal external storage card comprises the following steps: at least one secret key and a corresponding encryption / decipherment algorithm are stored in a terminal; an incidence relation is established between at least one application and at least one secret key stored in the terminal; and when the application is detected to need to read / write data in the external storage card, the secret key relevant to the application is obtained and the encryption / decipherment algorithm corresponding to the secret key are used to read / write the data. On the condition that normal reading and writing of the data are not affected and when the data storage card is obtained by other people, the data protection method and device used for the terminal external storage card can ensure that data information can be effectively prevented from being viewed, copied and spread at will.

Description

technical field [0001] The invention relates to the field of information security, in particular to a method and device for data protection of an external memory card of a terminal. Background technique [0002] Along with it, the data storage card has the characteristics of convenient portability, high memory capacity, fast data transmission and convenient application, and has become an indispensable part in people's life more and more. Then, the data security of the data storage card has become one of the most concerned technological developments in today's society. [0003] In order to prevent the data information in the data storage card from being read and tampered by illegal holders at will, or that sensitive data will be exposed to others after being lost; The lock password, however, does not protect the data source for the above methods, that is, the purpose of protecting data is not fundamentally achieved, and the lock password is easy to be cracked, thereby causin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/62
Inventor 张云奎
Owner DONGGUAN YULONG COMM TECH
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