pack-priv Class BaseKDFBytesGenerator

Class Inheritance

extends Object
implements DigestDerivationFunction

All Implemented Interfaces

Known Direct Subclasses

org.bouncycastle.crypto.fips.KDF2BytesGenerator

Imports

Basic KDF generator for derived keys and ivs as defined by IEEE P1363a/ISO 18033
This implementation is based on ISO 18033/P1363a.

Field Summary

Access	Constructor and Description
protected	BaseKDFBytesGenerator(int value of counter. counterStart, Digest the digest to be used as the source of derived keys. digest) Construct a KDF Parameters generator.

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

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

counterStart	back to summary
private int counterStart

digest	back to summary
private Digest digest

iv	back to summary
private byte[] iv

shared	back to summary
private byte[] shared

BaseKDFBytesGenerator	back to summary
protected BaseKDFBytesGenerator(int counterStart, Digest digest) Construct a KDF Parameters generator. Parameters counterStart:int value of counter. digest:Digest the digest to be used as the source of derived keys.

BaseKDFBytesGenerator

protected BaseKDFBytesGenerator(int counterStart, Digest digest)

Construct a KDF Parameters generator.

Parameters

generateBytes	back to summary
public int generateBytes(byte[] out, int outOff, int len) throws DataLengthException, IllegalArgumentException Implements org.bouncycastle.crypto.internal.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. IllegalArgumentException: if the size of the request will cause an overflow.

generateBytes

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

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

Exceptions

DataLengthException:: if the out buffer is too small.
IllegalArgumentException:: if the size of the request will cause an overflow.

getDigest	back to summary
public Digest getDigest() Implements org.bouncycastle.crypto.internal.DigestDerivationFunction.getDigest. return the underlying digest.

getDigest

public Digest getDigest()

return the underlying digest.

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