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Flash memory storage system, controller of flash memory storage system and data falsification preventing method

A flash memory controller, data tampering technology, applied in static memory, digital memory information, information storage and other directions to achieve the effect of ensuring integrity

Inactive Publication Date: 2011-08-10
PHISON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the corresponding digital signature is also stored in the memory card, the system cannot use the digital signature to verify that the stored value in the memory card has been tampered with

Method used

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  • Flash memory storage system, controller of flash memory storage system and data falsification preventing method
  • Flash memory storage system, controller of flash memory storage system and data falsification preventing method
  • Flash memory storage system, controller of flash memory storage system and data falsification preventing method

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Embodiment Construction

[0074] Generally speaking, a flash memory storage device (also called a flash memory storage system) includes a flash memory chip and a controller (also called a control circuit). Typically, a flash storage device is used with a host system so that the host system can write data to or read data from the flash storage device. In addition, there are also flash storage devices that include embedded flash memory and software executable on a host system that essentially acts as a controller for the embedded flash memory.

[0075] [First Exemplary Embodiment]

[0076] Figure 1A It is a host system using a flash storage device as shown in the first exemplary embodiment of the present invention.

[0077] Please refer to Figure 1A , the host system 1000 generally includes a computer 1100 and an input / output (input / output, I / O) device 1106 . The computer 1100 includes a microprocessor 1102 , a random access memory (random access memory, RAM) 1104 , a system bus 1108 and a data trans...

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Abstract

The invention provides a flash memory storage system, a controller of the flash memory storage system and a data falsification preventing method, wherein the flash memory storage system comprises a flash memory controller, a flash memory chip and an intelligent card chip. The flash memory chip is used for storing safe data. The flash memory controller uses unidirectional hashing functions to generate a signature corresponding to the safe data and stores the signature in the intelligent card chip according to private keys and the safe data.

Description

technical field [0001] The invention relates to a flash memory storage system, and in particular to a flash memory storage system capable of preventing data stored in a flash memory chip from being illegally tampered with, a flash memory controller, and a data tamper-proof method. Background technique [0002] The rapid growth of digital cameras, mobile phones, and MP3 players has led to a rapid increase in consumer demand for storage media. Because flash memory (Flash Memory) has the characteristics of data non-volatility, power saving, small size and no mechanical structure, it is suitable for portable applications and is most suitable for such portable products powered by batteries. A memory card is a storage device that uses NAND flash memory as a storage medium. Due to its small size and large capacity, memory cards have been widely used to store important personal data. However, the data stored in the memory card is easy to be changed without authorization. That is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C7/24
Inventor 詹清文
Owner PHISON ELECTRONICS