Package org.bouncycastle.crypto.fips

Class FipsSecureRandom

java.lang.Object

java.util.Random

java.security.SecureRandom

org.bouncycastle.crypto.fips.FipsSecureRandom

All Implemented Interfaces:

Serializable, RandomGenerator

public final class FipsSecureRandom
extends SecureRandom

Base class for DRBG/RNG SecureRandom implementations that use FIPS approved algorithms.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.random.RandomGenerator

RandomGenerator.ArbitrarilyJumpableGenerator, RandomGenerator.JumpableGenerator, RandomGenerator.LeapableGenerator, RandomGenerator.SplittableGenerator, RandomGenerator.StreamableGenerator

Method Summary

Modifier and Type	Method	Description
String	getAlgorithm()	Return the algorithm name
int	getBlockSize()	Return the block size of the underlying DRBG
byte[]	getPersonalizationString()	Return the personalization string used to create the DRBG.
int	getSecurityStrength()	Return the security strength of the DRBG.
boolean	isPredictionResistant()	Return true if the underlying DRBG is configured for prediction resistance.
void	nextBytes(byte[] bytes, byte[] additionalInput)
void	reseed()	Force a reseed.
void	reseed(byte[] additionalInput)	Force a reseed with additional input.
void	setSeed(long seed)

Methods inherited from class java.security.SecureRandom

generateSeed, getInstance, getInstance, getInstance, getInstance, getInstance, getInstance, getInstanceStrong, getParameters, getProvider, getSeed, next, nextBytes, nextBytes, reseed, setSeed, toString

Methods inherited from class java.util.Random

doubles, doubles, doubles, doubles, ints, ints, ints, ints, longs, longs, longs, longs, nextBoolean, nextDouble, nextFloat, nextGaussian, nextInt, nextInt, nextLong

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.random.RandomGenerator

isDeprecated, nextDouble, nextDouble, nextExponential, nextFloat, nextFloat, nextGaussian, nextInt, nextLong, nextLong

Method Details

setSeed

public void setSeed(long seed)

Overrides:

setSeed in class SecureRandom

nextBytes

public void nextBytes(byte[] bytes,
 byte[] additionalInput)

getAlgorithm

public String getAlgorithm()

Return the algorithm name

Overrides:

getAlgorithm in class SecureRandom

getBlockSize

public int getBlockSize()

Return the block size of the underlying DRBG

Returns:

number of bits produced each cycle.

isPredictionResistant

public boolean isPredictionResistant()

Return true if the underlying DRBG is configured for prediction resistance.

Returns:

true if prediction resistance configured, false otherwise.

getPersonalizationString

public byte[] getPersonalizationString()

Return the personalization string used to create the DRBG.

Returns:

the the personalization string used to create the DRBG.

getSecurityStrength

public int getSecurityStrength()

Return the security strength of the DRBG.

Returns:

the security strength (in bits) of the DRBG.

reseed

public void reseed()

Force a reseed.

Overrides:

reseed in class SecureRandom

reseed

public void reseed(byte[] additionalInput)

Force a reseed with additional input.

Parameters:

additionalInput - additional input to be used in conjunction with reseed.