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Class IS.hi.logir.cryptonite.RandomSpinner
java.lang.Object
|
+----java.util.Random
|
+----IS.hi.logir.cryptonite.RandomSpinner
- public class RandomSpinner
- extends Random
This class uses the scheduler to generate random numbers. It counts the number of times
a loop is repeated before a thread has slept for a specified number of milliseconds.
The two lowest order bits of this number are then used.
The helper class
which does the actual number generation is by
Henry Strickland (strix@versant.com) and
Greg Noel (greg@qualcomm.com). It is based on
similar C code
by Matt Blaze, Jack Lacy, and Don Mitchell.
- Author:
- Logi Ragnarsson (logir@hi.is)
-
NUM_ITER
-
-
RandomSpinner()
-
-
isRandom()
- Test randomness.
-
next(int)
- Generates the next random number.
NUM_ITER
private static final int NUM_ITER
RandomSpinner
public RandomSpinner()
next
protected synchronized int next(int bits)
- Generates the next random number.
- Overrides:
- next in class Random
isRandom
public static boolean isRandom()
- Test randomness. This is done by applying a chi-square test to the 2 lowest bits
of the values returned by the Spinner helper class and by applying a chi-square
test to the lengths of the gaps between identical values in the random stream.
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