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Re: Request: tamper-proofing executables



At  1:19 PM 07/08/94 -0400, Michael Handler wrote:

>        OTOH, if anyone else has come up with a scheme that is hard to 
>break / unbreakable, *please* come formward and correct me. I have a few 
>applications that I'd like to apply this to. :)

The only method I have heard (and this is merely hard to break) is to put
the hash value in a dongle. Then everyone will hate your program.

Another method that could provide interesting results is to throw
code in that will cause the program to function *differently* if
hacked. I'm thinking of (I think- correcttions wecome) AutoCad,
which was dongled and hacked, but the hack caused some math funciton
or another to return erroneous results. This is just obfusification,
but could give a hacker some major headaches.


-j
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___________________________________________________________________
Jamie Lawrence                                  <[email protected]>