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???
10/07/05 15:19
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#102102 - hardware???
Responding to: ???'s previous message

Well these are really rude, stealing other's work...
http://www.cl.cam.ac.uk/~sps32/mcu_lock.html


This is the classics. Comes from the same group as the first (they are obviously head-hunting all over the world).
http://www.cl.cam.ac.uk/users/rja14/tamper.html

Erik Malund said:
The only way I know to protect software is by hardware. If nobody can copy your hardware, a copy of your software is worthless.

How do you think you can make your hardware copy-resistant?
"Everything can be copied" applies not only to software.

Erik Malund said:
PLEASE do not post something about disassembly. Working from disassembled C takes 5 times longer than coding from scratch.

The goal of "intruder" is not always to make a copy with new functionality. To make a 100% copy you don't need to rework anything. To find out a key algorithm which might be 1% of the whole bunch but makes 90% of the cost might also be the motivation.
Even if the lengthy rework is needed, on too many places on the earth the cost of 5 times anything is less than the cost of the original work in for example the US or western Europe.

That's life. Sorry.

Jan Waclawek


List of 35 messages in thread
TopicAuthorDate
spoiling p0.0 pin            01/01/70 00:00      
   Yeah right            01/01/70 00:00      
   Spoil?            01/01/70 00:00      
      spoilng pin p0.0            01/01/70 00:00      
         I heavily doubt this            01/01/70 00:00      
            i have seen            01/01/70 00:00      
               Why are you sure, that it's the same??            01/01/70 00:00      
                  how to be sure of the copy            01/01/70 00:00      
   hmmm            01/01/70 00:00      
      several ways?            01/01/70 00:00      
         OH NO            01/01/70 00:00      
            how else?            01/01/70 00:00      
               If you want to go to Timbuktu and there            01/01/70 00:00      
                  always a way - but how costly            01/01/70 00:00      
                     Those are "design to" specifications, I            01/01/70 00:00      
   really strange approach !            01/01/70 00:00      
      unlocking            01/01/70 00:00      
      Excellent! Problem solved!!            01/01/70 00:00      
   Safe spoiling.            01/01/70 00:00      
      that's too bad            01/01/70 00:00      
      that's the crux            01/01/70 00:00      
         the deriavative is 89c55wd            01/01/70 00:00      
   anyway...            01/01/70 00:00      
      did you mean DS500x?            01/01/70 00:00      
   Everything they make, we can break!            01/01/70 00:00      
      hardware???            01/01/70 00:00      
   erk..            01/01/70 00:00      
   Maxim Appnote            01/01/70 00:00      
      even more erk            01/01/70 00:00      
         Yep            01/01/70 00:00      
         encryption...no go            01/01/70 00:00      
            once again            01/01/70 00:00      
               But Jez            01/01/70 00:00      
   If you have a display, let the power on            01/01/70 00:00      
   Milling and Epoxy Mold            01/01/70 00:00      

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