oracle.spatial.security
Class SecureRandom

java.lang.Object
  java.util.Random
      oracle.spatial.security.SecureRandom

All Implemented Interfaces:

java.io.Serializable

public final class SecureRandom
extends java.util.Random

PRNG this class generates a random number An internal seed which gets generated at the first time and once every CYCLE calls is used to randomize the return random number _cache and _cursor work together. These two hold intermediate (pre-generated) bytes. The cache size is the same as the basic block generated size (20 bytes based on SHA). Cache comes into play mostly when a lot of little random number generator requests are made (int, long, double, etc.). Also, cache is expired when large byte requests are made (larger than the remaining cache data). Cache may also be expired at other times, if deemed appropriate.

See Also:

Serialized Form

Constructor Summary

SecureRandom()

Method Summary

static boolean	forceJCA(boolean b) Forces system to use supplied JCA Random.
protected int	next(int bits)
void	nextBytes(byte[] bytes)
void	setSeed(byte[] seed)
void	setSeed(long seed)
static boolean	setSunLoops(int times) Sets the number of times to run sun secure random This could be used in two ways: a.

Methods inherited from class java.util.Random

nextBoolean, nextDouble, nextFloat, nextGaussian, nextInt, nextInt, nextLong

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SecureRandom

public SecureRandom()

Method Detail

setSunLoops

public static final boolean setSunLoops(int times)

Sets the number of times to run sun secure random This could be used in two ways: a. to not run it at all (set to ZERO). b. to run it enough times to acquire the proper entropy level.

forceJCA

public static final boolean forceJCA(boolean b)

Forces system to use supplied JCA Random. May not work if none provided. Returns boolean indicating success of the force operation. This class cannot be a JCA class, else INFINITE RECURSION!!!

next

protected final int next(int bits)

Overrides:

next in class java.util.Random

nextBytes

public final void nextBytes(byte[] bytes)

Overrides:

nextBytes in class java.util.Random

setSeed

public final void setSeed(long seed)

Overrides:

setSeed in class java.util.Random

setSeed

public final void setSeed(byte[] seed)