[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Hardware RNG's
Roger, I would like some details about your hardware RNG, if you
could, including how you were reading the random value. I had the
impression you were taking one bit at a time.
What did you mean when you said: "I just got a 3 standard deviation
at a 1000000 sample..."? What statistical testing did you do?
I used the chi-square test on 8-bit values (255 degrees of freedom),
and also computed the probablility for the chi-square statistic. I
programmed the runs-up and runs-down tests as suggested by Knuth, and
computed the chi-square for those as well. Finally, I counted the
numbers of 1 and 0 bits, and the number of times 1 followed 0, 0
followed 1, etc.
I didn't do the autocorrelation test. If you have any code for that,
I would appreciate having it. I'm not sure what you mean by "...the
derevitives of the sequence..." What is that?
I suppose these gadgets could be useful for those who want the
absolute security of the one-time pad, and can exchange disks
securely. With disks holding 1.44 meg now, it could be practical.
John A. Thomas
[email protected]
[email protected]
PGP public key available.