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BCWIPE
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README.TXT
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1997-05-30
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BCWipe - Wipe Utility for Windows 95/Windows NT 4.0
(freeware part of BestCrypt NP Data Protection system)
Jetico, Inc., 1993-1997
Dear Sir/Madame,
Thank you for choosing the BCWipe freeware utility.
****************** Contents *****************************
1. Introduction.
2. Why do you need a wiping utility?
3. How to install BCWipe utility.
4. How to run BCWipe utility.
5. How to run BCWipe utility from the command line prompt.
6. Known problems.
7. What is BestCrypt NP Data Protection System?
8. If You Want to Comment on the Product.
*********************************************************
1. Introduction.
---------------------------------------------------------
Jetico, Inc. company designs and develops data protection
systems for IBM-PC compatible computers. Our products:
BestCrypt+, BestCrypt, BestCrypt NP has a reputation as
relaible, easy to use and powerful products providing a user
with high level of data security.
The BCWipe utility is a part of the BestCrypt NP data
protection system. BCWipe software is intended to give you
a confidence that your deleted files will not be restored
by any intruder.
Jetico, Inc. company will be glad if BCWipe utility helps
you in your work (http://www.jetico.sci.fi).
2. Why do you need a wiping utility?
---------------------------------------------------------
When you delete your sensitive files from a disk on your
computer, operating system (Windows 95 or Windows NT)
does not erase these files contents from the disk - it only
deletes 'references' on these files from some system tables.
Contents of the deleted file (or file's `body') continue to
be stored on the disk and can be easily restored using any
disk tool utility.
You should also take into account the problem of so-called
Windows 'Swap' file. Swap file is the Windows system file
that is used for the virtual memory support. The size of
this file changes dynamically, and it can temporarily store
the parts of files or other information. When you open your
secret document, Swap file can be used by system to store
a part of the document.
What is wiping?
A "wiping" term is used here to call a process of shreding
a contents of a file or a free disk space. It will be
impossible to restore the data stored before on the disk or
in the file if you run a wiping utility.
BCWipe utility provides 3 ways to shred files' contents from
the disk when you delete your sensitive files:
a. Delete with wiping. Using 'Delete with wiping' command
you can delete and wipe your files and folders from
Windows Shell (Explorer program);
b. Wipe free disk space. If you have deleted sensitive files
using standard operating system command, you may wipe
free space on the disk where these files were stored -
all previously deleted files' contents become erased;
c. Swap file wiping. BCWipe utility automatically wipes
Windows Swap file contents when you run 'Wipe free
disk space' command.
3. How to install BCWipe utility
---------------------------------------------------------
Setup program copies all necessary files to your hard disk
and inserts all needed lines into Windows 95/NT Registry
database.
BCWipe Utility Setup program uses a standard way to install
software and provides all necessary explanations of
installation steps details. The only default information
user may want to change during installation is the Directory
name where to place the BCWipe Utility.
All dialog windows of the Setup programs are like each
other and have the following buttons:
Cancel - click this button to abort installation
Next - click this button to proceed installation
Back - click this button to return to previous step of
installation
NOTE:
BCWipe Utility Setup program writes also an information to
Windows Registry database, places dynamic load liblaries
to WINDOWS\SYSTEM directory, prepares a file for
uninstall procedure. Please do not make any manual
manipulations to install or uninstall BCWipe Utility
software to prevent appearance of unused garbage
software on the system directory or unused strings
in Registry database.
4. How to run BCWipe utility
---------------------------------------------------------
You can run BCWipe utility from Windows Shell (Explorer
program). After installation of BCWipe utility you will find
"Wipe free space" and "Delete with wiping" commands in
the context menus of the Explorer program. You can call a
context menu by pressing right mouse button on the drive
you would like to wipe or on the file (folder) you would
like to delete.
You will need to choose the option for wiping your disk:
Normal or U.S. DoD. U.S. DoD wiping is enhanced
shredding process to match U.S. Department of
Defence recommendations (DoD 5220.22-M). DoD
wiping is useful if you assume that your computer
disks may be investigated with a special equipment.
In other cases choosing of the Normal wiping option
will make your free disk space useless for curios hackers.
NOTE: Before running "Wipe free space" command on the
disk it is recommended to close all apllications. There
are at least two reasons to do this:
- some programs create temporary files and the contents
of this files will not be wiped when you run "Wipe free
space" command;
- Windows swap file (or pagefile) may store some
sensitive information that is used by currently loaded
applications. This part of swap file will not be wiped.
5. How to run BCWipe utility from the command line prompt.
---------------------------------------------------------
You may run BCWipe commands to wipe free space on the disk
and delete files or folders with wiping from the command
line.
This feature of the BCWipe software allows you to insert
wiping commands to your BAT files and then run this BAT file
automatically using Windows 95 SystemAgent or other
sheduling software.
BCWipe Setup program installs BCWipe.exe program to the
target directory which you have choosen during installation.
To run BCWipe command to wipe free space on the disk you
should run BCWipe.exe by the following way:
> BCWipe <FreeSpace> [-<Mode>] <drive name>
For example:
> BCWipe.exe FreeSpace -DoD C:
To run BCWipe command to delete files or folders you
should run BCWipe.exe by the following way:
> BCWipe.exe <Delete> [-<Mode>] <file or folder name> [<file or folder name>...]
For example:
> BCWipe.exe Delete -Normal C:\\SecureDate.doc
In both cases the optional field <Mode> may be:
DoD - the U.S.DoD (5220.22-M) seven pass extended character rotation wiping
Normal - two pass standard wiping
ATTENTION: If you run BCWipe.exe with the field <Mode> set
to "DoD" or "Normal", the BCWipe utility will run without
asking any additional confirmation for deleting files and
for wiping free space on the disk. Be careful to run the
utility using this way! It will be impossible to restore
files' contents after this operation!
6. Known problems
---------------------------------------------------------
If your computer has more than one disk, BCWipe utility
correctly defines what disk contains Windows swap file for
Windows 95 computers.
On Windows NT 4.0 computers the file 'pagefile.sys' usually
is on the disk where operating system have been installed.
If you did not change this default configuration for your
pagefile, BCWipe utility will work with the pagefile
correctly. If you have manually moved your pagefile to other
location, you should take into account that BCWipe utility
may not correctly report you about a pagefile location.
Besides of this incorrect drive letter report BCWipe utility
will work with Windows NT 4.0 pagefile correctly.
This problem for Windows NT will be solved in the nearest
future.
7. What is BestCrypt NP Data Protection System?
---------------------------------------------------------
BCWipe utility is a freeware part of BestCrypt NP
Data Protection system.
BestCrypt NP data protection software for Windows 95
allows a user to keep his files, letters, pictures,
databases, any another private data in encrypted form
on the hard disk, networks disks, removable disks,
CD-ROMs and flopies and later access it from any
application program.
BestCrypt NP uses so-called "encrypted logical disks
technology" that allows to get a transparent encryption of
your data.
BestCrypt NP keeps your files encrypted all the time and
decrypt them only at the moment of your access to it and
decrypt only a part (that you need to read, write, correct,
etc) of the file. It ensures you that your data are always
stored in an encrypted form.
To achieve a maximum security BestCrypt NP utilizes the
well-known encryption algorithms:
- Blowfish in Cipher Block Chaining mode (256-bit key size);
- GOST 28147-89 in Cipher Feedback mode (256-bit
key size);
- DES in Cipher Block Chaining mode (56-bit key size).
BestCrypt NP has a number of additional features like the
wiping utility (BCWipe), HOTKEY and TIMEOUT options
that allow a user to decrypt his data immediately using
hot-keys or after a specified amount of time.
We invite you to try a free trial of BestCrypt NP from
http://www.jetico.sci.fi/np_new.htm
Over 10 000 people have downloaded the free demo of
BestCrypt NP from our site. We received hundreds e-mails
from the users with warm words on BestCrypt NP. It's really
plesure for us and keeps us in a confidence that our
products deserves good words.
Please download the demo of BestCrypt NP and convince
yourself how easy it helps you to manage your private data.
8. If You Want to Comment on the Product
---------------------------------------------------------
If you have a product suggestion or comments on how to
make BCWipe utility better, e-mail us at this
Internet address:
jetico@sci.fi
Be sure to include your name, the version number of
BCWipe utility, and your Internet address with
all correspondence.
Please visit our WWW-site to get information
about our other products, Frequently Asked
Questions lists, BestCrypt User's
Evaluation page and other:
http://www.jetico.sci.fi
Note that your comments become the property
of Jetico, Inc.
Thank you for your time!
Jetico, Inc. developer's Team.
1993-1997.