org.bouncycastle.crypto.fips

Class FipsSecureRandom

java.lang.Object

java.util.Random

java.security.SecureRandom

org.bouncycastle.crypto.fips.FipsSecureRandom

All Implemented Interfaces:

java.io.Serializable

public final class FipsSecureRandom
extends java.security.SecureRandom

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

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
java.lang.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, getInstanceStrong, getProvider, getSeed, next, nextBytes, setSeed

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, toString, wait, wait, wait

Method Detail

setSeed

public void setSeed(long seed)

Overrides:

setSeed in class java.security.SecureRandom

nextBytes

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

getAlgorithm

public java.lang.String getAlgorithm()

Return the algorithm name

Overrides:

getAlgorithm in class java.security.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.

reseed

public void reseed(byte[] additionalInput)

Force a reseed with additional input.

Parameters:

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