Filewipe-Commercial-level file Erasure tool provides download _ Common tools

Brief introduction

Filewipe-Commercial Level file Erasure tool
The default behavior meets the requirements for commercial-level data erasure.
with n times (default is 6 times) random value, one at a time, full 0 fill erase the specified file.
Supports file wildcard characters and subdirectory traversal.
Optional log file for logging.
The number of random value fills is optional, and the default is 6 times.
Directly fill the physical sector, skip system file buffering and disk scheduling to ensure reliable erasure.
The padding is obtained by using random number seeds via a high random source such as the underlying hardware noise and CPU TSC (via the Win32 Crypto API). Random data generation uses the SHA algorithm, which conforms to the random degree of cryptographic coding level.
Fills in a disk cluster, with different random data used for each fill.


　

Commercial level data erasure

From the file system point of view, when the operating system deletes a file, only the related records in the file table are purged and the disk clusters occupied by the files are marked as available. The actual contents of the file remain on disk. This is true from the perspective of efficiency and storage device life. However, this also makes it simple and feasible to delete files.

A better way to do this is to fill the original contents of the file with junk data (for example, full 0 or whole) before deleting it. At this point, even if you use the undelete tool to recover, you get only a file full of junk data.

However, due to the physical properties of the magnetic medium, a single data coverage can only greatly weaken the original signal on the media remaining imprint, after covering, there will still be some weak, the original data residual signal (magnetic residue) reserve. It was as if a tape had been washed and the ear could still hear the traces of the original recording. Under a professional data recovery device, it is sufficient to regenerate raw data through these residual signals.

For this reason, commercial-level data erasure generally requires alternating use of all 0 and one cleaning storage medium at least 7 times. According to the example above, the tape of a passing sound is repeatedly erased (degaussing) 7 times.

However, pure cleaning (degaussing) is not the best solution. With enough dirty data for pollution, the effect is far better than pure cleaning. For the tape, the pure degaussing 7 times, the effect is far less than put it into the noisy downtown repeat recording 7 times to complete: the new input of the sound and was washed away from the residue of mutual confusion, than quiet cover (simple cleaning) more difficult to identify.

The same is the case for the data in the storage medium: each new-filled random data is confused with the original magnetic residue, and the level of the magnetic strength of each storage is highly random. This makes it difficult for the analyst to find the template that regenerates the original data. And the last one and one full 0 filling is mainly to further purify the noise.

　

About military-grade data erasure

Consulted a brother who worked in the army-related department. Answer Yue: "There is so trouble, we are direct physical smash ..." It seems that unless the stamping machine programming, otherwise the use of software to achieve military-level erasure is not possible, hehe.

　

Help screen

C:\Documents and Settings\administrator>
#filewipe

===============================================================================
File Wiper Version 2.1.0.702 by baiyang/2003-2006, freeware
===============================================================================
Use N pass random data + 1 pass full zero + 1 pass full one to Overwirte and
Delete specified files

usage:filewipe {Filepattern} [Randompassnumber] []

===============================================================================
Options:
Filepattern-file and Dir search pattern
Randompassnumber-how many times to overwrite the specified files with
-Random data, Default is 6
-s-include subdirectory (!!) danger!!)
-logfile:-Using a logfile.
-loglevel-specify the lowest logging level, can is:
Debugonly (Most Detail)
Info (DEFAULT)
Warning
Error
FatalError
Disabled (Close Logging Output)
-priority:-Specify the process running priority, can be:
Idle
BelowNormal
Normal (DEFAULT)
AboveNormal

===============================================================================
Examples:
Filewipe *.doc
Filewipe MyDoc.txt 2
Filewipe * 15/logfile: "C:\wipe.log"
Filewipe */s/priority:belownormal



　

Simple Chinese Help

C:\Documents and Settings\administrator>
#filewipe

===============================================================================
File Erase tool, version: 2.1.0.702 by baiyang/2003-2006, free software
===============================================================================
Use N-time random data + once full 0 + one cover and delete the specified file

Usage: filewipe {filepattern} [Randompassnumber] []

===============================================================================
Options:
Filepattern-File wildcard characters
Randompassnumber-Specifies the number of random data overlays, defaults to 6
-S-Contains subdirectories (dangerous!) ）
-logfile:-Specify a log record file
-loglevel-Specifies the level of detail for the log, which can be:
Debugonly (most detailed)
Info (default)
Warning
Error
FatalError
Disabled (disable log feature)
-priority:-Specifies the running priority of the process, which can be:
Idle
BelowNormal
Normal (default)
AboveNormal

===============================================================================
Use Example:
Filewipe *.doc
Filewipe MyDoc.txt 2
Filewipe * 15/logfile: "C:\wipe.log"
Filewipe */s/priority:belownormal



　

Attention matters

File erasure is an IO-intensive operation, and it skips the operating system's file buffering and disk scheduling mechanisms to ensure reliability, which is at the expense of reduced performance. Under a typical use case (for example, data cleansing before a company leaves office), users often want to erase large amounts of data (more than 10G of people in OutLook folders). Before you begin, you should realize that this is a time-consuming operation and may take several hours to complete.

If you want to continue using your computer during the operation, I recommend that you use the "-priority" option to set the Filewipe's run priority to "Idle" or "belownormal" so that it can run silently in the background, and you can continue to use the computer during this period.
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