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org.bouncycastle.crypto.generators

public Class MGF1BytesGenerator

Class Inheritance

extends Object
implements DerivationFunction

java.lang.Object
org.bouncycastle.crypto.generators.MGF1BytesGenerator

All Implemented Interfaces

org.bouncycastle.crypto.DerivationFunction

Imports

org.bouncycastle.crypto.DataLengthException, .DerivationFunction, .DerivationParameters, .Digest, .OutputLengthException, org.bouncycastle.crypto.params.MGFParameters

Generator for MGF1 as defined in PKCS 1v2

Field Summary

Modifier and Type	Field and Description
private Digest	digest
private int	hLen
private byte[]	seed

Constructor Summary

Access	Constructor and Description
public	MGF1BytesGenerator(Digest the digest to be used as the source of generated bytes digest)

Method Summary

Modifier and Type	Method and Description
public int	generateBytes(byte[] out, int outOff, int len) Implements org.bouncycastle.crypto.DerivationFunction.generateBytes. fill len bytes of the output buffer with bytes generated from the derivation function.
public Digest	getDigest() return the underlying digest.
public void	init(DerivationParameters param) Implements org.bouncycastle.crypto.DerivationFunction.init.
private void	ItoOSP(int i, byte[] sp) int to octet string.

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

Field Detail

digest	back to summary
private Digest digest

hLen	back to summary
private int hLen

seed	back to summary
private byte[] seed

Constructor Detail

MGF1BytesGenerator	back to summary
public MGF1BytesGenerator(Digest digest) Parameters digest:Digest the digest to be used as the source of generated bytes

Method Detail

generateBytes

back to summary

public int generateBytes(byte[] out, int outOff, int len) throws DataLengthException, IllegalArgumentException

Implements org.bouncycastle.crypto.DerivationFunction.generateBytes.

fill len bytes of the output buffer with bytes generated from the derivation function.

Exceptions

DataLengthException:: if the out buffer is too small.

getDigest	back to summary
public Digest getDigest() return the underlying digest.

init	back to summary
public void init(DerivationParameters param) Implements org.bouncycastle.crypto.DerivationFunction.init.

ItoOSP	back to summary
private void ItoOSP(int i, byte[] sp) int to octet string.