DerivationFunction
, DigestDerivationFunction
KDF1BytesGenerator
, KDF2BytesGenerator
public class BaseKDFBytesGenerator extends java.lang.Object implements DigestDerivationFunction
Modifier | Constructor | Description |
---|---|---|
protected |
BaseKDFBytesGenerator(int counterStart,
Digest digest) |
Construct a KDF Parameters generator.
|
Modifier and Type | Method | Description |
---|---|---|
int |
generateBytes(byte[] out,
int outOff,
int len) |
fill len bytes of the output buffer with bytes generated from the
derivation function.
|
Digest |
getDigest() |
return the underlying digest.
|
void |
init(DerivationParameters param) |
protected BaseKDFBytesGenerator(int counterStart, Digest digest)
counterStart
- value of counter.digest
- the digest to be used as the source of derived keys.public void init(DerivationParameters param)
init
in interface DerivationFunction
public Digest getDigest()
getDigest
in interface DigestDerivationFunction
public int generateBytes(byte[] out, int outOff, int len) throws DataLengthException, java.lang.IllegalArgumentException
generateBytes
in interface DerivationFunction
java.lang.IllegalArgumentException
- if the size of the request will cause an overflow.DataLengthException
- if the out buffer is too small.