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???
12/21/07 15:47
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 		 #148591 - RNG schemes can be malicious!
Responding to: ???'s previous message
Some time ago I needed a random bit stream. So, I took one of these RNG schemes, masked the upper 7bits and resulted in 0,1,0,1,0,1,0,1,0,1,0,1,0,1,...

I made some further analysis and found that certain numbers never seem to occur. I also found that sometimes succeeding numbers are related somehow, like in the example above, that when an odd number occured, the next will be an even.

These RNG schemes can behave very strange and you should carefully analyse what this thingy actually does.

Kai

List of 53 messages in thread
TopicAuthorDate
let's discuss random numbers            01/01/70 00:00      
   Radomness            01/01/70 00:00      
   chi squared....            01/01/70 00:00      
      51 related            01/01/70 00:00      
   how random is "Random"?            01/01/70 00:00      
      Quantifying randomness            01/01/70 00:00      
   Use one table in the memory            01/01/70 00:00      
   no 'mathematical solution can do that            01/01/70 00:00      
      I like your response            01/01/70 00:00      
   ADC and noise            01/01/70 00:00      
      reminds me of a funny story            01/01/70 00:00      
         Simple local shielding would have helped            01/01/70 00:00      
         Bad design!            01/01/70 00:00      
   The counter and button seems perfect to me            01/01/70 00:00      
   Not sure why people have problems with RNG            01/01/70 00:00      
      what I got out of all of this            01/01/70 00:00      
         Not quite?            01/01/70 00:00      
            And if there isn't a button?            01/01/70 00:00      
         no            01/01/70 00:00      
         More Not Quite            01/01/70 00:00      
            chi square isn't enough            01/01/70 00:00      
               Quantified randomness            01/01/70 00:00      
      By Definition            01/01/70 00:00      
      RNG schemes can be malicious!            01/01/70 00:00      
   pseudo IS pseudo, not random            01/01/70 00:00      
   A really good reference            01/01/70 00:00      
   Is radioactive decay truely random?            01/01/70 00:00      
      Correction            01/01/70 00:00      
      Is anything truly random?            01/01/70 00:00      
         Chaos is...            01/01/70 00:00      
            Chaos is not random.            01/01/70 00:00      
               I didnt tell that it is random            01/01/70 00:00      
   Visual randomness test            01/01/70 00:00      
      Las Vegas            01/01/70 00:00      
      Only for an indefinite number of pixels            01/01/70 00:00      
         How about a coin toss experiment, sort of.            01/01/70 00:00      
            Set of what ?            01/01/70 00:00      
               But my point is that you can know.            01/01/70 00:00      
                  This is wrong, sorry!            01/01/70 00:00      
                     Are you even reading what I wrote?            01/01/70 00:00      
                        A random system is....            01/01/70 00:00      
                           AKA the LCE            01/01/70 00:00      
                           Random is            01/01/70 00:00      
                        Of course, I did            01/01/70 00:00      
                           Before we proceed, ...            01/01/70 00:00      
                              Randomness versus determinism            01/01/70 00:00      
                                 Applying the uncertainty principle            01/01/70 00:00      
                                    Thanks            01/01/70 00:00      
                                       You're welcome            01/01/70 00:00      
                  It is still Random            01/01/70 00:00      
            Depends            01/01/70 00:00      
   Normal distribution.            01/01/70 00:00      
   A random # generator circuit.            01/01/70 00:00      

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