org.bouncycastle.crypto.general

Class X931PRNG.Base

java.lang.Object

org.bouncycastle.crypto.general.X931PRNG.Base

All Implemented Interfaces:

Parameters

Enclosing class:

X931PRNG

public static class X931PRNG.Base
extends java.lang.Object
implements Parameters

Base for Builder for SecureRandom objects based on the X9.31 PRNG.

Method Summary

Modifier and Type	Method and Description
X931PRNG.Builder	fromDefaultEntropy() Return a builder using an EntropySourceProvider based on the default SecureRandom with predictionResistant set to false.
X931PRNG.Builder	fromEntropySource(EntropySourceProvider entropySourceProvider) Return a builder which makes creates the SecureRandom objects from a specified entropy source provider.
X931PRNG.Builder	fromEntropySource(java.security.SecureRandom entropySource, boolean predictionResistant) Return a builder with an EntropySourceProvider based on the passed in SecureRandom and the passed in value for prediction resistance.
Algorithm	getAlgorithm() Return the algorithm these parameters are associated with.

Methods inherited from class java.lang.Object

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

Method Detail

fromDefaultEntropy

public X931PRNG.Builder fromDefaultEntropy()

Return a builder using an EntropySourceProvider based on the default SecureRandom with predictionResistant set to false.

Any SecureRandom created from a builder constructed like this will make use of input passed to SecureRandom.setSeed() if the default SecureRandom does for its generateSeed() call.

Returns:

a new Builder instance.

fromEntropySource

public X931PRNG.Builder fromEntropySource(java.security.SecureRandom entropySource,
                                          boolean predictionResistant)

Return a builder with an EntropySourceProvider based on the passed in SecureRandom and the passed in value for prediction resistance.

Any SecureRandom created from a builder constructed like this will make use of input passed to SecureRandom.setSeed() if the passed in SecureRandom does for its generateSeed() call.

Parameters:

entropySource - a SecureRandom to use as a source of entropy for the PRNG.

predictionResistant - true if the SecureRandom should be regarded as prediction resistant, false otherwise.

Returns:

a new builder instance.

fromEntropySource

public X931PRNG.Builder fromEntropySource(EntropySourceProvider entropySourceProvider)

Return a builder which makes creates the SecureRandom objects from a specified entropy source provider.

Note: If this constructor is used any calls to setSeed() in the resulting SecureRandom will be ignored.

Parameters:

entropySourceProvider - a provider of EntropySource objects.

Returns:

a new builder instance.

getAlgorithm

public Algorithm getAlgorithm()

Description copied from interface: Parameters

Return the algorithm these parameters are associated with.

Specified by:

getAlgorithm in interface Parameters

Returns:

the algorithm these parameters are for.