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 From: Sergey Karimov
  Where is Sergey Karimov?
 Reston
 Virginia - United States
 Sergey Karimov
 To: Mz
  Where is Mz?
 Metro Manila
 Philippines
 Mz
 Tags
Subject: RE: An adhoc Article... mzhash
Thread ID: 50901 Message ID: 51377 # Views: 3 # Ratings: 0
Version: Unknown Category: Other
Date: Saturday, September 11, 2004 3:20:46 PM         
   


> IT ONLY MEANS ONE THING
> The program DID run. It checks itself if the CRC is valid... and if not it KILLS itself. And thats the trick.
>
> -Mz

I wrote already it doesn't matter how much sophisticated your algorithm to calculate CRC is. It always ends with

if the CRC is valid
run application
else
kill itself
endif

in ASM it looks like

cmp ax,crc ;just replace this command to nop
je run_application ; or --> jmp run_application
jmp kill_itself ; or --> jmp run_application

Regards,
Sergey

ENTIRE THREAD

The strength of Logarithm... Posted by Mz @ 9/7/2004 4:06:53 AM
RE: The strength of Logarithm... Posted by Wild Fire @ 9/7/2004 4:23:00 AM
RE: The strength of Logarithm... Posted by Alexander Federizo @ 9/7/2004 4:56:54 AM
RE: The strength of Logarithm... Posted by Mz @ 9/7/2004 5:07:57 AM
RE: The strength of Logarithm... Posted by Alexander Federizo @ 9/7/2004 6:40:06 AM
RE: The strength of Logarithm... Posted by Mz @ 9/7/2004 7:00:06 AM
RE: The strength of Logarithm... Posted by Alexander Federizo @ 9/7/2004 7:23:24 AM
RE: The strength of Logarithm... Posted by Mz @ 9/10/2004 12:47:34 PM
RE: The strength of Logarithms... Posted by Alexander Federizo @ 9/10/2004 6:07:12 PM
RE: The strength of Logarithm... Posted by Boudewijn Lutgerink @ 9/10/2004 8:43:15 AM
An adhoc Article... mzhash Posted by Mz @ 9/10/2004 9:35:34 AM
RE: An adhoc Article... mzhash Posted by Alexander Federizo @ 9/10/2004 5:53:58 PM
RE: An adhoc Article... mzhash Posted by Mz @ 9/11/2004 4:30:58 AM
RE: An adhoc Article... mzhash Posted by Sergey Karimov @ 9/11/2004 5:10:55 AM
RE: An adhoc Article... mzhash Posted by Mz @ 9/11/2004 6:45:48 AM
RE: An adhoc Article... mzhash Posted by Mz @ 9/11/2004 7:00:53 AM
RE: An adhoc Article... mzhash Posted by Sergey Karimov @ 9/11/2004 3:20:46 PM
RE: An adhoc Article... mzhash Posted by Sergey Karimov @ 9/11/2004 3:42:35 PM
RE: An adhoc Article... mzhash Posted by Mz @ 9/12/2004 10:19:23 AM
RE: An adhoc Article... mzhash Posted by Sergey Karimov @ 9/12/2004 4:13:36 PM
RE: An adhoc Article... mzhash Posted by Mz @ 9/13/2004 3:19:33 AM
An approach for Intelectual Property Protection... Posted by Mz @ 9/11/2004 7:12:08 AM
RE: An approach for Intelectual Property Protec... Posted by Dale Dedoroy @ 9/13/2004 4:14:20 AM
RE: An approach for Intelectual Property Protec... Posted by Mz @ 9/13/2004 5:27:30 AM