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PASSWORD PROTECTION SYSTEM
Version 2.0

Copyright (C) 1990 Rui Manuel Caridade

SHAREWARE:
Takes a long time to build a set of programs like this, and I ask
you all that think this program is usefull to send me some contribution,
for the large hours that I spent building this program.
I hope that all of you think a litle bit about this and help all
the persons like me, to create good programs and share all ower knowledge
with you.
Please send 3.000$00 for the folowing address, and became one of
the persons that helped the start of SHAREWARE and Public Domain in
Portugal.
Thank you.

My Address:
----------
Rui Manuel Caridade
Rua Magalhaes Lima, N.56 - 3 Dto
4700 Braga
PORTUGAL

INTRODUCTION:

This package is composed by two main protection systems. The first one
consists in protect executable files like COM and EXE with a password 25
characters long. The special feature of this protection is that protected
files continue to be executable and only start if you give the correct
password. The other consists in protection of all kinds of files with a
password 25 characters long, but they aren't executable, and if you want to
used this files you must unprotect them first.


DISK FILE EXPLANATION:

- Help files:

README This file

- First Protection System files:

SPECIAL.EXE Main file to protect EXE and COM.
SPECIAL1.OVR First overlay. Used to protect COM files.
SPECIAL2.OVR Second overlay. Used to protect EXE files.

- Second Protection System files:

PROTECT.EXE Main file to protect all files.
UNPROTEC.EXE Main file to unprotect file protected by PROTECT.EXE.
DIRP.EXE Display directory of protected files.

- Utility files:

UNRECOVE.EXE Main file to make files unrecoverable.

- Example files:

EXAMP1.OLD Old executable EXE file. Source for EXAMP1.EXE.
EXAMP1.EXE Protected EXE file with the password "tEsT".

EXAMP2.OLD Old executable COM file. Source for EXAMP2.COM.
EXAMP2.COM Protected COM file with the password "TeSt".

COMMAND SYNTAX AND FUNCTION DESCRIPTION:

SPECIAL.EXE

This command is used for all kind of COM and EXE files, they
became protected with your password.

- Syntax:
SPECIAL [d:][\path\]filename [d:][\path]

[d:][\path\]filename Here are specified the source
file(s) to be protected.
Wildcards are accepted (*,?).

[d:][\path] Here you can specify the
destination path to put all
protect files. Default is
source path.

- Example:

It can be used in all situations, for example after compile
a program in some language compiler, now it's possible to protect
your executable file for non-authorized use. This is the process:

File given by the compiler: TEST.COM.
To protect it:
A>SPECIAL TEST.COM

It will be create a file TEST.OLD and TEST.COM

If the protected program is executed:
A>TEST
Password? #########################

This example is about a COM file, but to EXE files the process
was the same.


PROTECT.EXE

This command is used for all kind of files, they became
protected with your password, but can't be executable.

- Syntax:
PROTECT [d:][\path\]filename [d:][\path]

[d:][\path\]filename Here are specified the source
file(s) to be protected.
Wildcards are accepted (*,?).

[d:][\path] Here you can specify the
destination path to put all
protect files. Default is
source path.

- Example:
This can be used to protect documents, letters, etc.

A very important document file: SALARY.EMP.
A>TYPE SALARY.EMP
John Smith $300 $12 $312
Emilio Ramos $100 $5 $105

To protect it:
A>PROTECT SALARY.EMP
It will be created SALARY.OLD and SALARY.EMP

A>TYPE SALARY.EMP
dfljkhgds;o873023q 1 3298623qikfoha\wfegb7y
098342ujoijksd,m .zcvx;klcj zx\c ZX\C>m

UNPROTEC.EXE

This command the inverse operation of PROTECT, it turns all
protect files into unprotect files, i.e., MS-DOS normal files.

- Syntax:
UNPROTEC [d:][\path\]filename [d:][\path]

[d:][\path\]filename Here are specified the source
file(s) to be unprotected.
Wildcards are accepted (*,?).

[d:][\path] Here you can specify the
destination path to put all
unprotect files. Default is
source path.

- Example:
This can be used to see the protected documents, letters, etc.

A very important protected document file: SALARY.EMP.
A>TYPE SALARY.EMP
dfljkhgds;o873023q 1 3298623qikfoha\wfegb7y
098342ujoijksd,m .zcvx;klcj zx\c ZX\C>m
To unprotect it:
A>UNPROTEC SALARY.EMP
It will be created SALARY.DEL and SALARY.EMP

A>TYPE SALARY.EMP
John Smith $300 $12 $312
Emilio Ramos $100 $5 $105


DIRP.EXE

This is a very usefull command because we don't have to
write the names of all protectd files, we simple have to know the
password(s). And display all files protected by that password.

- Syntax:
DIRP [d:][\path\]filename

[d:][\path\]filename Here are specified the source
file(s) to be displayed.
Wildcards are accepted (*,?).

- Example:

To see all files on drive B, with password "test":
A>DIRP B:

SALARY.EMP LETTER.001 LETTER.002 PICTURE.DRW
STOCK.DAT

Those files written above are files protected by password
"test".

UNRECOVE.EXE

This is used to delete files in a way that they are not
recoverable.

- Syntax:
UNRECOVE [d:][\path\]filename

[d:][\path\]filename Here are specified the source
file(s) to be displayed.
Wildcards are accepted (*,?).
- Example:
Before use UNRECOVE make sure that a backup was made, if it
was protected by SPECIAL because it isn't possible to unprotect this
files.
After protection of TEST.COM it is created TEST.OLD, if this
file is not needed must be deleted:
A>UNRECOVE TESTE.OLD

- ATENTION: *** This command turns the files unrecoverable ****

NOTES:

1 - File protected by SPECIAL can't be unprotected, for future
protections or other purposes a backup of the file(s) is
recomended.

2 - UNPROTEC and DIRP only works with files protected by PROTECT.

3 - After a protection operation if an .OLD file is created and if
it is rename to is old name it is executable again. Don't send
this file with the protected. ATENTION if one file is deleted by
MS-DOS, DEL command it is possible to recover the file, so it is
recomended to transfer the protected file to other disk or make
this recover impossible, with the use of UNRECOVE.EXE