org.bouncycastle.crypto.prng
Class ReversedWindowGenerator
java.lang.Object
org.bouncycastle.crypto.prng.ReversedWindowGenerator
- RandomGenerator
public class ReversedWindowGenerator
extends java.lang.Object
Takes bytes generated by an underling RandomGenerator and reverses the order in
each small window (of configurable size).
Access to internals is synchronized so a single one of these can be shared.
void | addSeedMaterial(byte[] seed) - Add more seed material to the generator.
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void | addSeedMaterial(long seed) - Add more seed material to the generator.
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void | nextBytes(byte[] bytes) - Fill bytes with random values.
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void | nextBytes(byte[] bytes, int start, int len) - Fill part of bytes with random values.
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ReversedWindowGenerator
public ReversedWindowGenerator(RandomGenerator generator,
int windowSize)
addSeedMaterial
public void addSeedMaterial(byte[] seed)
Add more seed material to the generator.
- addSeedMaterial in interface RandomGenerator
seed
- a byte array to be mixed into the generator's state.
addSeedMaterial
public void addSeedMaterial(long seed)
Add more seed material to the generator.
- addSeedMaterial in interface RandomGenerator
seed
- a long value to be mixed into the generator's state.
nextBytes
public void nextBytes(byte[] bytes)
Fill bytes with random values.
- nextBytes in interface RandomGenerator
bytes
- byte array to be filled.
nextBytes
public void nextBytes(byte[] bytes,
int start,
int len)
Fill part of bytes with random values.
- nextBytes in interface RandomGenerator
bytes
- byte array to be filled.start
- index to start filling at.len
- length of segment to fill.