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PASSWORD.DOC
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1993-01-22
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DOCUMENTATION TO PASSWORD.SYS VERISON 1.3
PASSWORD.SYS enables you to protect your Harddisk or Floppydisk from
not welcomed Users. If you have the problem that several people enter
your system without your permission, and you are sick of that, then you
could find this little program useful.
It asks for a PASSWORD (maximum 40 characters long), and repeats until
the correct password is typed in or halts your machine if the password
isn't valid after the fourth try. The password is quite sure and very hard
to break - so don't worry, that a Hacker could enter your machine. The
difference to other commercial products is, that it is written as a
device driver, which means, one cannot interrupt its Code. There are only
two ways: one: Reenter the password or switch off the computer. there's of
course too the posibilty to access via the Floppydisk and alter the Config.sys
file, but for normal use its quite save.
I just wrote this program to test the devicedriver possibilities of MSDOS.
This program does nothing exept asking for a password, and lock the computer,
if no one right is typed in. It doesn't cut off any of your valuable RAM.
Installation
1) Copy PASSWORD.SYS and SETPASSW.EXE to your root-directory (or utility
directory, if you have got one).
2) Load the file CONFIG.SYS (in the rootdirectory of your bootdrive) into a
texteditor(only ASCII-TEXT) and insert the Following as the first in
CONFIG.SYS:
DEVICE=C:\PASSWORD.SYS
3) After doing this reboot your Computer. Now should be the Pasword-prompt
on your screen. The default-password is "GUEST". Enter it now; be care-
ful: the program works case-sensitive, that means that GueST and GUEST
aren't the same (like in C and Modula-2).
4) If you like to change the Password, then use the program SETPASSW.EXE,
which comes with PASSWORD.SYS. First you have to enter the correct
password and then yu can enter a new one. Write it down and store it
in a save place, so that if you forget your password you could look it
up.
There are some tips using Passwords:
-) You should change your password regularly (e.g. each week).
-) Use random combinations of Letters and numbers; then you could be
quite sure, that no one will be able to hack in.
If you find this program useful and like it, then be so kind and send me
something for it, so that I get encouraged to develope my program (I'm
thinking of Directory access rights etc...). If you register, then you
get the newest version of the program, and technical help.
SUGGESTIONS:
If you have ideas, how to improve this program, or if you think, that
some features are absent, then write me. (Address below)
THIS PRODUCT IS SHAREWARE - YOU ARE ALLOWED TO HANDLE IT TO YOUR
FRIENDS AND OTHERS BUT ONLY IF NOTHING IN THE PROGRAMS OR THE DOCUMENTATION
IS ALTERED. I DON'T CHARGE FOR ANY DAMAGES, THE USE OF THIS PROGRAM MAY
CAUSE. ALTHOUGH IT IS PROGRAMMED TOTALLY CLEAR ERRORS CAN'T BE EXCLUDED.
IF SUCH ERRORS OCCUR, AND YOU ALLOCATE THE ERROR THEN PLEASE SEND A MAIL TO
ME.
please send money orders to:
Christoph Christ
Karl Schweighoferg. 9/6
A-1070 Wien
AUSTRIA
Send emails to: a44211dn@awiuni11.bitnet or a44211dn@vm.edvz.univie.ac.at
REMARKS:
This version cleans off a few bugs:
-) some muttering of DOS about wrong sectorsizes with DOS-Versions
earlier then 5.0
-) It wasn't quite clear, if the driver "behaved well". Now I hope
it does.
---> I've got an EMAIL Address now. Please don't send your MAILS to
Helmut Dier at a4421dbd@awiuni11.bitnet anymore but to my new address
a44211dn@awiuni11.bitnet. There might be a problem reaching vienna.
in that case try the connection via the uunet.
Vienna 20th JAN 1993 Copyright 1992, 1993 by Christoph Christ