Modifier and Type	Class and Description
public static class	X931PRNG.Base Base for Builder for SecureRandom objects based on the X9.31 PRNG.
public static class	X931PRNG.Builder Builder for SecureRandom objects based on the X9.31 PRNG.
private static enum	X931PRNG.Variations

Modifier and Type	Field and Description
public static final X931PRNG.Base	AES_128 X9.31 PRNG - 128 bit AES
public static final X931PRNG.Base	AES_192 X9.31 PRNG - 192 bit AES
public static final X931PRNG.Base	AES_256 X9.31 PRNG - 256 bit AES
public static final X931PRNG.Base	Triple_DES_168 X9.31 PRNG - 3-Key TripleDES

Access	Constructor and Description
private	X931PRNG()

AES_128	back to summary
public static final X931PRNG.Base AES_128 X9.31 PRNG - 128 bit AES

AES_192	back to summary
public static final X931PRNG.Base AES_192 X9.31 PRNG - 192 bit AES

AES_256	back to summary
public static final X931PRNG.Base AES_256 X9.31 PRNG - 256 bit AES

Triple_DES_168	back to summary
public static final X931PRNG.Base Triple_DES_168 X9.31 PRNG - 3-Key TripleDES

X931PRNG	back to summary
private X931PRNG()

org.bouncycastle.crypto.general back to summary

public Class X931PRNG.Base

Class Inheritance

java.lang.Object
org.bouncycastle.crypto.general.X931PRNG.Base

All Implemented Interfaces

org.bouncycastle.crypto.Parameters

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

Field Summary

Modifier and Type	Field and Description
private final GeneralAlgorithm	algorithm

Constructor Summary

Access	Constructor and Description
private	Base(GeneralAlgorithm algorithm) Basic constructor, creates a builder using an EntropySourceProvider based on the default SecureRandom with predictionResistant set to false.

Method Summary

Modifier and Type	Method and Description
public X931PRNG.Builder	Returns: a new Builder instance. fromDefaultEntropy() Return a builder using an EntropySourceProvider based on the default SecureRandom with predictionResistant set to false.
public X931PRNG.Builder	Returns: a new builder instance. fromEntropySource(SecureRandom a SecureRandom to use as a source of entropy for the PRNG. entropySource, boolean true if the SecureRandom should be regarded as prediction resistant, false otherwise. predictionResistant) Return a builder with an EntropySourceProvider based on the passed in SecureRandom and the passed in value for prediction resistance.
public X931PRNG.Builder	Returns: a new builder instance. fromEntropySource(EntropySourceProvider a provider of EntropySource objects. entropySourceProvider) Return a builder which makes creates the SecureRandom objects from a specified entropy source provider.
public Algorithm	getAlgorithm() Implements org.bouncycastle.crypto.Parameters.getAlgorithm. Return the algorithm these parameters are associated with.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

algorithm	back to summary
private final GeneralAlgorithm algorithm

Constructor Detail

Base	back to summary
private Base(GeneralAlgorithm algorithm) Basic constructor, creates 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.

Base

back to summary

private Base(GeneralAlgorithm algorithm)

Basic constructor, creates 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.

Method Detail

fromDefaultEntropy	back to summary
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:X931PRNG.Builder a new Builder instance.

fromDefaultEntropy

back to summary

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:X931PRNG.Builder: a new Builder instance.

fromEntropySource	back to summary
public X931PRNG.Builder fromEntropySource(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:SecureRandom a SecureRandom to use as a source of entropy for the PRNG. predictionResistant:boolean true if the SecureRandom should be regarded as prediction resistant, false otherwise. Returns:X931PRNG.Builder a new builder instance.

fromEntropySource

back to summary

public X931PRNG.Builder fromEntropySource(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:SecureRandom: a SecureRandom to use as a source of entropy for the PRNG.
predictionResistant:boolean: true if the SecureRandom should be regarded as prediction resistant, false otherwise.

Returns:X931PRNG.Builder

a new builder instance.

fromEntropySource	back to summary
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:EntropySourceProvider a provider of EntropySource objects. Returns:X931PRNG.Builder a new builder instance.

fromEntropySource

back to summary

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:EntropySourceProvider: a provider of EntropySource objects.

Returns:X931PRNG.Builder

a new builder instance.

getAlgorithm	back to summary
public Algorithm getAlgorithm() Implements org.bouncycastle.crypto.Parameters.getAlgorithm. Doc from org.bouncycastle.crypto.Parameters.getAlgorithm. Return the algorithm these parameters are associated with. Returns:Algorithm the algorithm these parameters are for.

getAlgorithm

back to summary

public Algorithm getAlgorithm()

Implements org.bouncycastle.crypto.Parameters.getAlgorithm.

Doc from org.bouncycastle.crypto.Parameters.getAlgorithm.

Return the algorithm these parameters are associated with.

Returns:Algorithm: the algorithm these parameters are for.

org.bouncycastle.crypto.general back to summary

public Class X931PRNG.Builder

Class Inheritance

extends Object

java.lang.Object
org.bouncycastle.crypto.general.X931PRNG.Builder

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

Field Summary

Modifier and Type	Field and Description
private final GeneralAlgorithm	algorithm
private byte[]	dateTimeVector
private final EntropySourceProvider	entropySourceProvider
private final SecureRandom	random

Constructor Summary

Access	Constructor and Description
pack-priv	Builder(GeneralAlgorithm algorithm, SecureRandom random, EntropySourceProvider entropySourceProvider, byte[] dateTimeVector)

Method Summary

Modifier and Type	Method and Description
public GeneralSecureRandom	Returns: a SecureRandom. build(SymmetricKey the block cipher key to initialise algorithm implementation with. key, boolean true if engine to be reseeded on each use, false otherwise. predictionResistant) Construct a X9.31 secure random generator using the passed in engine and key.
public X931PRNG.Builder	Returns: the current Builder instance. setDateTimeVector(byte[] a dateTime vector - needs to be the same size as the block size of the cipher. dateTimeVector) Set the dateTime vector to be used with the generator.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

algorithm	back to summary
private final GeneralAlgorithm algorithm

dateTimeVector	back to summary
private byte[] dateTimeVector

entropySourceProvider	back to summary
private final EntropySourceProvider entropySourceProvider

random	back to summary
private final SecureRandom random

Constructor Detail

Builder	back to summary
pack-priv Builder(GeneralAlgorithm algorithm, SecureRandom random, EntropySourceProvider entropySourceProvider, byte[] dateTimeVector)

Method Detail

build	back to summary
public GeneralSecureRandom build(SymmetricKey key, boolean predictionResistant) Construct a X9.31 secure random generator using the passed in engine and key. If predictionResistant is true the generator will be reseeded on each request. Parameters key:SymmetricKey the block cipher key to initialise algorithm implementation with. predictionResistant:boolean true if engine to be reseeded on each use, false otherwise. Returns:GeneralSecureRandom a SecureRandom.

build

back to summary

public GeneralSecureRandom build(SymmetricKey key, boolean predictionResistant)

Construct a X9.31 secure random generator using the passed in engine and key. If predictionResistant is true the generator will be reseeded on each request.

Parameters

key:SymmetricKey: the block cipher key to initialise algorithm implementation with.
predictionResistant:boolean: true if engine to be reseeded on each use, false otherwise.

Returns:GeneralSecureRandom

a SecureRandom.

setDateTimeVector	back to summary
public X931PRNG.Builder setDateTimeVector(byte[] dateTimeVector) Set the dateTime vector to be used with the generator. If this method is not called a vector is calculated based on System.currentTimeMillis(). Parameters dateTimeVector:byte[] a dateTime vector - needs to be the same size as the block size of the cipher. Returns:X931PRNG.Builder the current Builder instance.

setDateTimeVector

back to summary

public X931PRNG.Builder setDateTimeVector(byte[] dateTimeVector)

Set the dateTime vector to be used with the generator. If this method is not called a vector is calculated based on System.currentTimeMillis().

Parameters

dateTimeVector:byte[]: a dateTime vector - needs to be the same size as the block size of the cipher.

Returns:X931PRNG.Builder

the current Builder instance.

org.bouncycastle.crypto.general back to summary

private final Enum X931PRNG.Variations

Class Inheritance

extends Enum<X931PRNG.Variations>

java.lang.Object
java.lang.Enum
org.bouncycastle.crypto.general.X931PRNG.Variations

Field Summary

Modifier and Type	Field and Description
public static final X931PRNG.Variations	AES_128
public static final X931PRNG.Variations	AES_192
public static final X931PRNG.Variations	AES_256
public static final X931PRNG.Variations	Triple_DES_168

Constructor Summary

Access	Constructor and Description
private	Variations()

Method Summary

Modifier and Type	Method and Description
public static X931PRNG.Variations	valueOf(String name)
public static X931PRNG.Variations[]	values()

Inherited from java.lang.Enum:: clone compareTo describeConstable equals finalize getDeclaringClass hashCode name ordinal toString valueOf

Field Detail

AES_128	back to summary
public static final X931PRNG.Variations AES_128

AES_192	back to summary
public static final X931PRNG.Variations AES_192

AES_256	back to summary
public static final X931PRNG.Variations AES_256

Triple_DES_168	back to summary
public static final X931PRNG.Variations Triple_DES_168

Constructor Detail

Variations	back to summary
private Variations()

Method Detail

valueOf	back to summary
public static X931PRNG.Variations valueOf(String name)

values	back to summary
public static X931PRNG.Variations[] values()

public final Class X931PRNG

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

public Class X931PRNG.Base

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

public Class X931PRNG.Builder

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private final Enum X931PRNG.Variations

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail