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???
05/28/09 00:15
Modified:
  05/28/09 00:21

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#165639 - Series of mathematical routine.
Responding to: ???'s previous message
is it possible to create a add,subb,mul,div,xrl or combination of it to arrive to a checksum like purpose?

or only add and complement that was use on checksum to recover the end data?

i forgot CRC, i was thinking it would take up RAM and cycle for it....thanks for it, ill search.

anyway, can you add some antilogarithm on some common/widely use encryption/dec on 8051. thank you again



found the CRC :D
http://www.8052.com/users/big...able.phtml

List of 23 messages in thread
TopicAuthorDate
UART encryption algorithm            01/01/70 00:00      
   Do you really mean "encryption"?            01/01/70 00:00      
      Adler-32 alwas an alternative            01/01/70 00:00      
         xmodem?            01/01/70 00:00      
   Nothing magic            01/01/70 00:00      
      Series of mathematical routine.            01/01/70 00:00      
         PSX Memory card in example...            01/01/70 00:00      
            Just CRC            01/01/70 00:00      
               CRC encrypt?            01/01/70 00:00      
                  Describe your problem - not how you think of solving it            01/01/70 00:00      
                     why weak? --my problem            01/01/70 00:00      
                        More on CRC            01/01/70 00:00      
                           Yes thats it(i missed YOUR POST)            01/01/70 00:00      
                              Few 16-bit CRC combinations            01/01/70 00:00      
                                 16 combination?            01/01/70 00:00      
                                    Everything on Google            01/01/70 00:00      
                                 You forgot some            01/01/70 00:00      
                                    Most, not all            01/01/70 00:00      
                        Are you trying to copy an existing protocol?            01/01/70 00:00      
                           yes Black box            01/01/70 00:00      
                              You really should have said that in the first place!            01/01/70 00:00      
                                 CRC with in different colors?            01/01/70 00:00      
            pls explain            01/01/70 00:00      

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