Data wiping method for NTFS (new technology file system)

Abstract

The invention relates to a data wiping method for an NTFS (new technology file system). The method includes the following steps of firstly, opening an X disk, namely a volume of the NTFS, in the Windows, and reading front 512 bytes of the volume, namely a starting sector; secondly, searching the ID (identity) of a file according to the path of the file to be deleted; and thirdly, wiping related information of the file. A system of the file is analyzed directly from disk data at the bottom, all file data on the disk can be accessed directly, and influence of an operation system is avoided, so that the highest authority is acquired for the file data on the disk, and deletion of the file data is guaranteed and cannot be recovered.

Description

technical field [0001] The invention relates to a data erasing method, in particular to a data erasing method for an NTFS file system. Background technique [0002] With the rapid development of information technology, information security has attracted more and more attention. Data security is an important part of information security, especially various personal privacy data or commercial confidential information, such as private, commercial electronic letters, commercial contracts, private photos, etc., are often the target of being stolen. An important reason for data leakage is the incomplete erasure of user data. [0003] For data that is no longer needed, there is no value for retention, and leakage will cause great losses, so data erasure is required. The current data erasure measures are divided into two categories: one is physical destruction, which usually uses physical shredding and corrosive solvents to corrode the storage medium; the other is the erasure of d...

AI Technical Summary

Problems solved by technology

The implementation of this method is largely limited by the file system of the operating system. For example, the operating system may block access to certain files, which may cause errors in the obtained information, etc.

Moreover, this kind of data erasure only erases the physical data content of the file, and does not guarantee that all attributes of the file are erased or disposed of. Some key data may be missed, and many times this situation cannot be tolerated.

For example, when NTFS stores a file, it needs to store a lot of data that can represent the information of the data file (such as the time the file was created, the last access time, the file size, the file name, etc., and there are even thumbnails for pictures). The location of these redundant data ensures the efficiency of querying and reading and writing files in the file system of the operating system, but if only the file entity data is deleted without clearing the file attribute information, it will lead to major data leakage

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