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Embedded system-based method for protecting security and integrity of flash data

An embedded system and security technology, which is applied in the field of protecting flash memory data security and integrity, and data protection in flash memory, can solve problems such as unavailable flash memory unit data write operation, flash memory data loss, etc., and achieve good social benefits and Economic benefits, loss prevention, and data integrity assurance effects

Active Publication Date: 2010-02-10
SHENZHEN GONGJIN ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to solve the technical problem of preventing the system from losing flash memory data during power-on and power-off in the embedded system, and has designed a method for protecting the security and integrity of flash memory data based on the embedded system, so that the system The non-volatile fields in the flash memory unit are completely locked when power is turned on or off, and the data in the flash memory unit cannot be written during this period, ensuring the integrity of the flash memory data

Method used

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  • Embedded system-based method for protecting security and integrity of flash data
  • Embedded system-based method for protecting security and integrity of flash data
  • Embedded system-based method for protecting security and integrity of flash data

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Embodiment Construction

[0021] Refer to the attached figure, a method for protecting the security and integrity of flash memory data based on an embedded system. The method is implemented by means of non-volatile fields in the flash chip unit, Linux system and supporting management software, and is implemented at the kernel layer of the Linux system. Set up the lock write protection drive interface circuit matched with the non-volatile field. After the CPU collects the system running status with the signal acquisition unit, it sends a lock or unlock control command to the lock write protection drive interface to realize non-volatile memory in the flash memory chip unit. Lock or unlock the sex field. The present invention utilizes a non-volatile field of the lock write protection provided by the flash memory chip, and controls the lock and unlock of the flash memory by setting a lock write protection drive interface. That is, when the field is closed (locked), any data modification cannot be operated, ...

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Abstract

The invention discloses an embedded system-based method for protecting security and integrity of flash data, solving the technical problems of preventing the system from losing flash data in the poweron and power off course in the embedded system. The adopted technical scheme is realized by means of a nonvolatile field in a flash chip unit, a Linux system and supporting management software, wherein a lock write-protection drive interface circuit matched with the nonvolatile field in the inner nuclear layer of the Linux system; and CPU acquires the running state of the system by means of a signal acquisition unit, and then sends a locking or unlocking control command to the lock write-protection drive interface circuit, so as to realize to lock or unlock the nonvolatile field in the flashchip unit. The invention has the advantages that equipment is limited by the filed both in the power on and power off course, thereby effectively preventing the possibility of losing data in the flashunit, ensuring the data integrity in the flash unit, and simultaneously well avoiding the possibility of losing data due to hardware or software, thereby having good social benefit and economic benefit.

Description

Technical field [0001] The invention belongs to the technical field of flash memory data protection in embedded systems, and relates to a method for protecting data in flash memory, in particular a method for protecting the safety and integrity of flash memory data during system power-on or power-down. Background technique [0002] With the progress of society and the development of science and technology, diversified equipment is also changing with each passing day. Users also put forward higher requirements for embedded equipment, and they need to be able to provide complete functions, safety, speed, stability, and easy operation. Embedded devices, the system of which is referred to as embedded system for short, is used to manage the system of embedded devices, coordinate and operate the user interface and internal interface existing in the entire system, and provide users with more humanized operations. Unified allocation and scheduling of resources in the system, in order to ...

Claims

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Application Information

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IPC IPC(8): G06F12/14
Inventor 雷校邓永坚王志波汪澜张锡健
Owner SHENZHEN GONGJIN ELECTRONICS CO LTD
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