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???
05/04/05 08:27
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#92865 - LPC935
Responding to: ???'s previous message
Hi Jan,
Yes i now use LPC935 and I am aware of the difference. I do not have a parallell programmer or an ICP programmer. Thats why i am not sure that FM should not respond to the chip at all if the ISP-recieve character is XORd. however i think that the orignal boot is not been changed, but FM even asks if i am sure to currupt the ISP boot, then it says programmed, and if FM agian wants to communicate, it just communicates well./
Any other clue? I am really stuck, but maybe i am going to try something else.
Jan do you have experience with IAP? I found a method to write user flash in application on keils website. The data to be programmed are recieved by the UART then, encrypted and then placed in the user memory. User memory adress requires an adress which can be read from the HEX file and the amount of data for that sector. How to place the byte received from the UART in an array(or pointer)?
best regareds
Khaled

List of 46 messages in thread
TopicAuthorDate
ISP-AES(or other tiny encryption)for LPC            01/01/70 00:00      
   so it works?            01/01/70 00:00      
      re so it works?            01/01/70 00:00      
         could it be            01/01/70 00:00      
   TEA            01/01/70 00:00      
      re could it be?            01/01/70 00:00      
         double-xor            01/01/70 00:00      
            LPC935            01/01/70 00:00      
      TEA            01/01/70 00:00      
         Tea time!            01/01/70 00:00      
            TEA time ;)            01/01/70 00:00      
            More tea            01/01/70 00:00      
         Please clarify requirements            01/01/70 00:00      
            what i want, Dan            01/01/70 00:00      
               Looks like you are set then            01/01/70 00:00      
                  to Dan            01/01/70 00:00      
                     Re: to Dan            01/01/70 00:00      
                        Mode of operation            01/01/70 00:00      
                        I underdstand now., thanks            01/01/70 00:00      
   better done in hardware            01/01/70 00:00      
      what about this?            01/01/70 00:00      
         what are you making            01/01/70 00:00      
            theft has to be prevented            01/01/70 00:00      
               either or            01/01/70 00:00      
                  FM is just a "vehicle"...            01/01/70 00:00      
                     but a diesel            01/01/70 00:00      
                        it's easy            01/01/70 00:00      
                           again, why            01/01/70 00:00      
                              unsecure?            01/01/70 00:00      
                                 yes            01/01/70 00:00      
                                    Individual sector security bits removal            01/01/70 00:00      
                           lockbits            01/01/70 00:00      
                              Now i understand!            01/01/70 00:00      
                                 same thing            01/01/70 00:00      
                                    what am i making?            01/01/70 00:00      
                                       be careful            01/01/70 00:00      
                                          why GSM?            01/01/70 00:00      
                                 FM            01/01/70 00:00      
                                    FM            01/01/70 00:00      
   for the xor method to work            01/01/70 00:00      
      RC4            01/01/70 00:00      
         RC4            01/01/70 00:00      
   A reminder            01/01/70 00:00      
      encryption            01/01/70 00:00      
   pgpi.org            01/01/70 00:00      
      ok thanks jez            01/01/70 00:00      

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