
     
               
                                  
                                
             
    Computer Security Engineering          Belgrade, Yugoslavia 
    Blagoje Ceklic                  Tel/Fax: +381(0)11/532-2345
    e-mail: comsec@beotel.yu      http://www.beotel.yu/~comsec/ 
     

                       PC Guard for Win16 v1.01

        Copyright (c) by Blagoje Ceklic all rights reserved



PC Guard for Win offers fully automatic protection of the Windows NE
(New  Executable)  16-bit  executable  files.   PC  Guard  can  link
protected program with specific motherboard (BIOS checksum) and (or)
with protected program disk  position.  Executable file structure is
changed, starting segment can be encrypted and  many  anti-debugging
techniques  are  used  against  reverse engineering.  There are four
protection methods:

Bios identification  

    Protected program will run  only  on  the computer with specific
identification code which  is  defined  during  protection  process.
This  code  can  be obtained with GUARDID utility.  It is not stored
into protected file and it's used for all encryption.

Auto install 

    At the first time protected  program  can be run on any computer
but after that it will work only on that computer.

No identification 

    Protected program  can  run  on  any  computer  but  it's  still
protected from reverse engineering.

Remote

    This  method  can be used for remote licensing of your software.
When protected program  is  executed  it  will  show dialog box with
32-bit  number  which  is  computed  according  to  data  from   the
motherboard  bios.   This code can be transfered from your client to
you by  phone,  fax  or  e-mail.   With  it  you  can than calculate
corresponding activation key (32-bit number) and  pass  it  to  your
client.


If you need more information about this product please contact me at
the address below.

                           Blagoje Ceklic
                          Partizanska 4/17
                           11090 Belgrade
                         Yugoslavia, Europe
                                  
                    Phone/Fax: +381-11/532-2345
                                  
                      e-mail: comsec@beotel.yu
                   http://www.beotel.yu/~comsec/

