Category : System Diagnostics for your computer
Archive   : PWPLUS15.ZIP
Filename : PWPLUS.DOC

PWPLUS 1.5

Copyright (C) 1992 Lonnie L. Logue


-- AN IBM PC PASSWORD SYSTEM --



FEATURES


1. Written in 100% Assembly Language
2. Up to 15 character password
3. Password is case insensitive
4. Password is not displayed on the screen
5. The password and owner info are encrypted
6. Ctrl-Alt-Delete reboot sequence is disabled
7. The System is disabled after 2 invalid attempts
8. Optional logging to a disk logfile
9. Optional screen blanking (3 min. timeout)
10. Optional clock & log time format (12/24hrs)
11. Optional alarm, to alert those nearby
12. Optional exploding windows
13. Easy to use setup menu
14. Color change menu
15. Owner identification feature
16. PWBG v2.01 included



This Zip contains the following files:

PWPLUS.EXE PW Plus password program
PWPLUS.DOC PW Plus documentation
PWBG.EXE PW Boot Guard program
PWBG.DOC PW Boot Guard documentation


INSTALLATION



Using a text editor (DOS programs EDIT or EDLIN), edit the file
\AUTOEXEC.BAT so that it contains the command PWPLUS as close to
the start of the file as possible.


EXAMPLE: @ECHO OFF
PWPLUS
PATH=C:\;C:\DOS
PROMPT $p$g



SETUP MENU


1. INSTALL A PASSWORD

Allows entry of a new password which is encrypted and
then saved.

ENTER saves password, ESC clears the entry.
If no password is entered, ENTER cancels.


2. SET OPTIONS

Allows selection and saving of various options.

ENTER saves options, SPACE toggles selections,
ESC cancels.


3. CHANGE COLORS

Allows the changing of pwplus's colors.

ENTER saves selections, ESC cancels, HOME restores
default colors, ARROW KEYS change FG, BG colors.


4. ENTER OWNER INFO

Allows entry of the computer owner's name/company/phone.
If the computer is ever misplaced or stolen, this
information can be displayed upon a failed entry
attempt.


ENTER saves information, ESC cancels.


5. CHANGE WARNING

Allows the editing of the main window warning message.
A message of up to 5 lines may be entered.

ENTER saves information, ESC cancels.


6. VIEW DISK LOGFILE

Allows viewing of the disk logfile.

ESC, ENTER cancels. DEL prompts for delete of logfile.


7. BOOT GUARD STATUS

Shows the current status of PW Boot Guard, a companion
program that prevents access of the Fixed Disk after a
floppy boot.


8. EXIT SETUP MENU

Allows exit of Setup Menu to the Main screen.


9. EXIT TO DOS

Allows exit of the program to DOS.



OPTIONS MENU


1. LOG AUTHORIZED ACCESS

Logs authorized access to a disk logfile.


2. LOG UNAUTHORIZED ATTEMPTS

Logs unauthorized attempts to a disk logfile.


3. LOG POWER DOWN EXITS

Logs the last startup time to a disk logfile, in the
event that the computer's power was turned off, or was
reset hard.


4. HIDE THE LOGFILE

Hides the disk logfile from normal DOS directory
searches.


5. USE MILITARY TIME

Uses military time (24hr) for the clock and logfile time
stamp.


6. ENABLE SCREEN BLANKER

Blanks the computer screen after a 3 minute
timeout period. NOTE: Some CGA displays will not
respond to this option.


7. ENABLE AUDIBLE ALARM

Sounds an audible alarm when an unauthorized access has
been attempted.


8. ENABLE EXPLODING WINDOWS

Enables the use of exploding windows.


9. ENABLE IDENTIFICATION

Displays upon an unathorized access attempt, the owners
personal identification.



MAIN MENU


1. ENTER PASSWORD

Allows entry and testing of password. If the
correct password is entered the program exits.
After 2 invalid attempts the system is disabled.


2. SETUP MENU

Allows access to the setup menu, upon entry of
the correct password.



ERROR MESSAGES


1. REQUIRES DOS VERSION 2.0 OR ABOVE

DOS version 2.0 or above is required for the operation
of this program.


2. UNSUPPORTED VIDEO MODE

PWPLUS supports both Color and Monochrome 80 x 25
display modes. 40 x 25 display modes are not supported.



UPDATES


1.0 Initial release of PWPLUS, a much improved version of
the PW password program.

1.1 Color change menu added. Improved error handling
procedures. Bugfix - as a result of changing from PW's
COM file format to EXE, the system lockup after a failed
entry attempt was the result of a program lockup rather
than a controlled keyboard lock.

1.2 Enhanced keyboard rate for editing, logfile viewing.
Improved critical error handling further, should be
pretty much bombproof now. Improved upon all
procedures, and tightened code.

1.3 Changed the programs's appearance. Added power down
exit logging option. In the color menu, added the
ability to restore default colors using the Home key.

1.5 Bugfix - if you were in the color menu, spun the colors
around a bit, then exited the setup menu and entered the
wrong password twice, it would lock up. I know, I know,
who would possibly do this!?? Well it bugged me, so I
fixed it! Also added CRC testing and improved upon the
encryption of the configuration file. Feeling a little
laid back today, so I changed the background color to
a mellow earth tone brown. You can always change it.



SOFTWARE LICENSE


Copyright (C) 1992 Lonnie L. Logue


You are free to use, copy and distribute PWPLUS.EXE
for NONCOMMERCIAL use if:

1. No fee is charged for use, copying or distribution
(excluding reasonable disk cost's).

2. It is not modified in any way.


Any and all contributions should be sent to the
following:

Lonnie L. Logue
9231 Goldenrod Lane
Upper Marlboro, MD 20772






-EOF-