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???
06/12/06 09:25
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 		 #118151 - arcfour on '51
Responding to: ???'s previous message
There is an arcfour (RC4) implementation in the code library here. Lacks proper comments, but seems pretty usable. produces one byte per 39 cycles (including call and ret), so the net "encryption" speed is around 80kBytes/s at my "standard setup" (20MHz/6clock) - the communication "overhead" would be probably much more than 39 cycles...

Jan Waclawek


List of 30 messages in thread
TopicAuthorDate
Secure communication, Encryption            01/01/70 00:00      
   Forum search tools            01/01/70 00:00      
   Wait for it...            01/01/70 00:00      
      O.K I won't in that case steve            01/01/70 00:00      
   A good start would be FIPS 46            01/01/70 00:00      
      Secure?            01/01/70 00:00      
         proper key management helps a lot            01/01/70 00:00      
         IF pushed I would say.........            01/01/70 00:00      
            security            01/01/70 00:00      
            what is HUGE?            01/01/70 00:00      
               HUGE as in ...            01/01/70 00:00      
                  Rijmen and Daemen?            01/01/70 00:00      
                     Chipcon / TI CC2430 / 2510            01/01/70 00:00      
                        Hey good timing!            01/01/70 00:00      
                           your specification            01/01/70 00:00      
   blowfish or Twofish            01/01/70 00:00      
      AES128            01/01/70 00:00      
         That's why I told him to check bandwidth            01/01/70 00:00      
            rc4 is a a nice stream cypher            01/01/70 00:00      
   Chipcon / TI CC1010            01/01/70 00:00      
      yeah but its only single des            01/01/70 00:00      
         3DES            01/01/70 00:00      
   more secore = more horsepower            01/01/70 00:00      
      Simple schemes can be made more complex            01/01/70 00:00      
         Data size/speed            01/01/70 00:00      
   If anyone wants to play with it            01/01/70 00:00      
   anyway..now available            01/01/70 00:00      
   encryption example            01/01/70 00:00      
      arcfour on '51            01/01/70 00:00      
   DS2460 I2C Coprocessor            01/01/70 00:00      

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