Re: A scheme of software protection

From: JiXian Yang (YJX_OnLine_at_126.com)
Date: 07/11/05


Date: 11 Jul 2005 07:13:47 -0700

Jan Panteltje wrote:
> Do I understand you build a virtual (soft) CPU with a differrent
> instruction set?
> That thing can be disassembled, and and then a debugger and disassembler
> written for it.

Thank you very much for your reply.

Some contents should be added to the paper when I found some reference
citations.
Suppose that there exist the debugger and disassembler and the
instruction set is not differrent, the effect might be:

...
Instruction_n;
Call Calculate_Offset_and_Jump;
Instruction_n+1;
Call Calculate_Offset_and_Jump;
Instruction_n+2;
Call Calculate_Offset_and_Jump;
...

Thanks again for you time.

Sincerely,

JiXian Yang