part5
Class PRNG

java.lang.Object
  part5.PRNG

Direct Known Subclasses:

BBS_PRNG, DLH_PRNG, Generic, RSA_PRNG

public abstract class PRNG

extends java.lang.Object

An abstract class that defines the basic behaviour of pseudo-random number/bit generators.

Constructor Summary

PRNG()

Method Summary

abstract int	nextBit() A method to generate a single random bit as an integer value 0 or 1.
java.math.BigInteger	random(java.math.BigInteger m) A method to generate a random integer in the range 0..m-1.
java.math.BigInteger	random(int b) A method to generate a random positive integer with b bits.

Methods inherited from class java.lang.Object

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

Constructor Detail

PRNG

public PRNG()

Method Detail

nextBit

public abstract int nextBit()
                     throws java.lang.Exception

A method to generate a single random bit as an integer value 0 or 1.

Throws:

java.lang.Exception

random

public final java.math.BigInteger random(java.math.BigInteger m)
                                  throws java.lang.Exception

A method to generate a random integer in the range 0..m-1.

Throws:

java.lang.Exception

random

public final java.math.BigInteger random(int b)
                                  throws java.lang.Exception

A method to generate a random positive integer with b bits.

Throws:

java.lang.Exception