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Save and Encrypt source code in EXE

 
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LiquidCode
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Joined: 05 Dec 2000
Posts: 1731
Location: Space and Time

PostPosted: Mon Dec 03, 2007 3:18 am    Post subject: Save and Encrypt source code in EXE Reply with quote

This is some code I made to encrypt the source of a VDS script and allow it to be included as a resource in an EXE so it can be extracted if the original code is lost. This code uses the VDS encryption but can be changed to use blowfish.dll or something like it. I just didn't want to use an external dll to keep the size of the final exe smaller.

Features:
Adds code to extract the source to the original DSC file. To extract the source just pass the "pin" number as %1 to the EXE file.

Adds [DSC Crypt] to the explorer context menu of DSC file for quick encryption.

Except for the extraction code, the original DSC file is left alone. The encrypted code is saved to <Scriptname>.dsc.enc and this is the file that is added as a resource to the EXE.

I think I got it all. Please let me know if there are any questions or problems. Thanks

EDIT: The code has been updated to work as a tool for VDS 6. Compile and put in the Tools folder. It will ask for a PIN and ask if you wish to use the currently loaded project. If you press yes, your project is saved. The code added at the top to extract the source and then reopened and compiled. If you change the pin the pin is updated in the source as well.

Code:

  #-----------------------------------------------------------------------------#
  #                                                                             #
  # Author:  Chris Gingerich                                                    #
  #                                                                             #
  # Copyright:  2005 Chris Gingerich of Code714.com                             #
  #                                                                             #
  # Encrypt source to add to EXE file as a resource to get source back if lost      #
  #-----------------------------------------------------------------------------#
  Title DSCCrypt
  DIALOG CREATE,DSCCrypt,-1,0,240,160,ontop
  DDE LINK, VDS, System
  # Pin number for password (must be a number or left blank)
  %%pin = @input(Enter 4 digit PIN number,3031)
  if @not(@ok())
     DDE TERMINATE     
     stop
  end
  #%%pin = 3031

#Add to DSC Context MenuMENU
#if @not(@file(@windir()\DSCCrypt.exe))
#   File copy,%0,@windir()\DSCCrypt.exe
#   %%zip = @regread(root,.dsc)
#   if %%zip
#      link create,@windir()\DSCCrypt.exe,@windir(SendTo)\,DSC Crypt
#      if @not(@ok())
#         Warn Link not created!
#      end
#      registry write,root,%%zip\Shell\[DSC Crypt]\,,
#      registry write,root,%%zip\Shell\[DSC Crypt]\command,,@windir()\DSCCrypt.exe @chr(34)"%1"@chr(34)
#   end
#   stop
#end
if @equal(%1,install)
   File copy,%0,@windir()\DSCCrypt.exe
   %%zip = @regread(root,.dsc)
   if %%zip
      link create,@windir()\DSCCrypt.exe,@windir(SendTo)\,DSC Crypt
      if @not(@ok())
         Warn Link not created!
      end
      registry write,root,%%zip\Shell\[DSC Crypt]\,,
      registry write,root,%%zip\Shell\[DSC Crypt]\command,,@windir()\DSCCrypt.exe @chr(34)"%1"@chr(34)
   end
   stop
end
     #Look to see if VDS Is Running.
  if @winexists(#TMainWin)
     if @ask(Use currently loaded project in VDS?)
        %t = @wintext(#TMainWin)
        %p = @pos(":",%t)
        %%Proj = @trim(@substr(%t,@pred(%p),@len(%t)))
        %p = @path(%%Proj)
        %%in = %p@name(%%Proj)".dsc"
        %%Reload = 1
        DDE Execute,[FILESAVE(%%Proj)]
     else
        %%in = @filedlg(*.dsc)
        if @not(@ok())
           DDE TERMINATE     
           stop           
        end
     end
  elsif @not(%1)
     %%in = @filedlg(*.dsc)
        if @not(@ok())
           DDE TERMINATE     
           stop           
        end
  else
     %%in = %1
  end
 
  list create,1
  list create,2
  list create,3
  list loadfile,1,%%in
  %m = @match(1,"#resource add,TEXT,"@name(%%in))
  if @not(%m)
     list add,3,"# ======= Begin Get Source ==========================="
     list add,3,"#resource add,TEXT,"@name(%%in)".dsc.enc,SCRIPT2"
     list add,3,"  if @equal(%1,"%%pin")"
     list add,3,"     write resource,TEXT,SCRIPT2,@path(%0)@name(%0)"@chr(34)".src"@chr(34)
     list add,3,"     list create,1"
     list add,3,"     list create,2"
     list add,3,"     list loadfile,1,@path(%0)@name(%0)"@chr(34)".src"@chr(34)
     list add,3,"     %x = 0"
     list add,3,"     repeat"
     list add,3,"        list add,2,@encrypt(@item(1,%x),%1)"
     list add,3,"        %x = @succ(%x)"
     list add,3,"     until @equal(%x,@count(1))"
     list add,3,"     list savefile,2,@path(%0)@name(%0)"@chr(34)"_src.dsc"@chr(34)
     list add,3,"     file delete,@path(%0)@name(%0)"@chr(34)".src"@chr(34)
     list add,3,"     stop"
     list add,3,"  end"
     list add,3,"# ======== End Get Source ==========================="
     list add,3,
     list append,3,1
     list assign,1,3
     list savefile,1,%%in
  else
     %n = @next(1)     
     list put,1,"  if @equal(%1,"%%pin")"
     list savefile,1,%%in
  end
  %x = 0
  repeat
     list add,2,@encrypt(@item(1,%x),%%pin)
     %x = @succ(%x)
  until @equal(%x,@count(1))
  list savefile,2,%%in".enc"
  if %%Reload
     DDE EXECUTE,[FILEOPEN(%%Proj)]
     DDE Execute,[COMPILE]
     DDE TERMINATE
  end
  stop

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Http://vdsfreak.com


Last edited by LiquidCode on Sun Feb 07, 2010 9:12 pm; edited 1 time in total
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DavidR
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Location: Hershey Pennsylvania U.S.A.

PostPosted: Mon Dec 03, 2007 12:15 pm    Post subject: Reply with quote

Wow, that's pretty cool. What a great idea, I never thought of doing that!

Just last week I found myself scrambling to locate the source for a program I wrote several years (and several computers) ago.

This way as long as I've got the exe I've got the source!

Thanks!
.......David
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vtol
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Posts: 622
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PostPosted: Fri Dec 07, 2007 10:44 pm    Post subject: Reply with quote

cool Cool
That would also be handy remotely when you discover a small fixible for example (path bug) or some other small external bug when in turn allows you to save the day. hmm that reminds me of superman Laughing

Not to spoil your fun here, but I've allways wondered what STOP was for, so I'm guessing it is used with bin file applications yes? no?

Thanks
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DaveR
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Posts: 413
Location: Australia

PostPosted: Sat Dec 08, 2007 12:54 am    Post subject: Reply with quote

vtol wrote:
I've allways wondered what STOP was for

STOP is for stopping the script.

Because EXIT can sometimes only exit a gosub or user function or command etc it can often not stop the script like you expect it to (if something unexpected has happened).

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Dave
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vtol
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PostPosted: Tue Dec 11, 2007 8:14 pm    Post subject: Reply with quote

That makes complete sense.
That was allways my guess.
Guess I was hoping for a new function secret, hehe.
Anyways, never needed it so was allways not sure.
Also it may come in handy as a special intentional tool function for a program I guess.
Thanks to you, I feel much better now, and I'm able to walk again Mr. Green
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DavidR
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PostPosted: Wed Feb 06, 2008 1:48 am    Post subject: Reply with quote

LiquidCode I'm still thrilled with this program. I use it with every .exe I create.

Just A comment for VDS6 users,
Code:
binfile saveres,TEXT,SCRIPT2,@path(%0)@name(%0)".src"

will need to be replaced by:
Code:
WRITE RESOURCE,TEXT,SCRIPT2,@path(%0)@name(%0)".src"


...............David
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vdsalchemist
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Posts: 1448
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PostPosted: Wed Feb 06, 2008 7:48 pm    Post subject: Reply with quote

DavidR wrote:
LiquidCode I'm still thrilled with this program. I use it with every .exe I create.

Just A comment for VDS6 users,
Code:
binfile saveres,TEXT,SCRIPT2,@path(%0)@name(%0)".src"

will need to be replaced by:
Code:
WRITE RESOURCE,TEXT,SCRIPT2,@path(%0)@name(%0)".src"


...............David


DavidR,
Do this instead...

Code:


If @Greater(@Name(@SysInfo(DSVER)),4)
  #DEFINE COMMAND,BINFILE,WRITE
  #DEFINE FUNCTION,BINFILE,WRITE
End

If @Greater(@Name(@SysInfo(DSVER)),5)
  WRITE RESOURCE,TEXT,SCRIPT2,@path(%0)@name(%0)".src"
Else
  Binfile saveres,TEXT,SCRIPT2,@path(%0)@name(%0)".src"
End


This will allow the same code to work with any version of VDS.

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LiquidCode
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Posts: 1731
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PostPosted: Sun Feb 07, 2010 9:13 pm    Post subject: Reply with quote

The code has been updated to work as a tool for VDS 6. Compile and put in the Tools folder. It will ask for a PIN and ask if you wish to use the currently loaded project. If you press yes, your project is saved. The code added at the top to extract the source and then re-opened and compiled. If you change the pin, the pin is updated in the source as well.
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Chris
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