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Security flash memory, encrypting device, method for accessing internal memory data

A technology of data and flash memory, which is applied in the field of flash memory with an encryption device and access to data through the encryption device, and can solve the problems of memory card security defects and other issues

Inactive Publication Date: 2009-04-01
DDTIC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned technology of CPRM to achieve the function of memory card security still has its defects

Method used

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  • Security flash memory, encrypting device, method for accessing internal memory data
  • Security flash memory, encrypting device, method for accessing internal memory data
  • Security flash memory, encrypting device, method for accessing internal memory data

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0035] see figure 2 , is a schematic diagram of the secure flash memory access system of the present invention. The secure flash memory 2 of the present invention includes a data encryption device 20 electrically connected to a flash memory chip 22 having multiple data transmission terminals. The aforementioned data encryption device 20 and flash memory chip 22 can be packaged into a secure flash memory 2 by packaging technology. In addition, the data encryption device 20 can also be electrically connected to the flash memory chip 22 to form the secure flash memory 2 .

[0036] see again figure 2 , the above-mentioned secure flash memory 2 is electrically connected to a control device 3 .

[0037] The control device 3 can interpret the commands sent from the computer (not shown), and then control the access of the data in the secure flash memory 2 according to the commands.

[0038] see again figure 2 After the control device 3 accepts the computer command, it will sen...

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PUM

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Abstract

The invention provides a password flash memory which includes a flash memory chip provided with a plurality of data transmission ends and a data encrypting device; wherein, the data encrypting device includes a validating module provided with a preset passing code, a key module and a switching module. The validating module compares a passing code with the preset passing code and is used for outputting a control signal, while the key module supplies the encryption and decryption of the data. The switching module is connected to the validating module, the data transmission end of the flash memory chip and the key module and is controlled by the control signal for connecting or cutting off the data transmission end of the flash memory chip and the key module.

Description

technical field [0001] The invention relates to a secure flash memory, an encryption device and a method for accessing memory data, in particular to a flash memory with an encryption device and a method for accessing data through the encryption device. Background technique [0002] There are many different types of memory cards on the market, such as SmartMedia, CompactFlash, MMC, and Security Digital (SD). However, it is very easy to access data from the aforementioned memory card, as long as there is a corresponding card reading mechanism, the data in the memory card can be accessed. In this way, for the user, the loss or theft of the memory card will cause the risk of easy leakage of the internal confidential data. [0003] For this reason, a kind of content protection (CPRM, DRM, ACE or IIS) and other methods have been proposed to protect the content of the memory card. Here, the content protection (Content Protection for Recordable Media; CPRM) technology is used for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/14G06F21/02G06K19/073G06F21/78
Inventor 郑智文
Owner DDTIC CORP