Package org.bouncycastle.crypto.digests

Class Kangaroo.KangarooTwelve

java.lang.Object

org.bouncycastle.crypto.digests.Kangaroo.KangarooTwelve

All Implemented Interfaces:

Digest, ExtendedDigest, Xof

Enclosing class:

Kangaroo

public static class Kangaroo.KangarooTwelve
extends Object

KangarooTwelve.

Constructor Summary

Constructors

Constructor	Description
KangarooTwelve()	Constructor.
KangarooTwelve(int pLength, CryptoServicePurpose purpose)	Constructor.
KangarooTwelve(CryptoServicePurpose purpose)

Method Summary

Modifier and Type	Method	Description
int	doFinal(byte[] pOut, int pOutOffset)	close the digest, producing the final digest value.
int	doFinal(byte[] pOut, int pOutOffset, int pOutLen)	Output the results of the final calculation for this digest to outLen number of bytes.
int	doOutput(byte[] pOut, int pOutOffset, int pOutLen)	Start outputting the results of the final calculation for this digest.
String	getAlgorithmName()	return the algorithm name
int	getByteLength()	Return the size in bytes of the internal buffer the digest applies it's compression function to.
int	getDigestSize()	return the size, in bytes, of the digest produced by this message digest.
void	init(Kangaroo.KangarooParameters pParams)	Initialise the digest.
void	reset()	reset the digest back to it's initial state.
void	update(byte pIn)	update the message digest with a single byte.
void	update(byte[] pIn, int pInOff, int pLen)	update the message digest with a block of bytes.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

KangarooTwelve

public KangarooTwelve()

Constructor.

KangarooTwelve

public KangarooTwelve(int pLength,
 CryptoServicePurpose purpose)

Constructor.

Parameters:

pLength - the digest length

KangarooTwelve

public KangarooTwelve(CryptoServicePurpose purpose)

Method Details

getAlgorithmName

public String getAlgorithmName()

Description copied from interface: Digest

return the algorithm name

Returns:

the algorithm name

getByteLength

public int getByteLength()

Description copied from interface: ExtendedDigest

Return the size in bytes of the internal buffer the digest applies it's compression function to.

Specified by:

getByteLength in interface ExtendedDigest

Returns:

byte length of the digests internal buffer.

getDigestSize

public int getDigestSize()

Description copied from interface: Digest

return the size, in bytes, of the digest produced by this message digest.

Specified by:

getDigestSize in interface Digest

Returns:

the size, in bytes, of the digest produced by this message digest.

init

public void init(Kangaroo.KangarooParameters pParams)

Initialise the digest.

Parameters:

pParams - the parameters

update

public void update(byte pIn)

Description copied from interface: Digest

update the message digest with a single byte.

Specified by:

update in interface Digest

Parameters:

pIn - the input byte to be entered.

update

public void update(byte[] pIn,
 int pInOff,
 int pLen)

Description copied from interface: Digest

update the message digest with a block of bytes.

Specified by:

update in interface Digest

Parameters:

pIn - the byte array containing the data.

pInOff - the offset into the byte array where the data starts.

pLen - the length of the data.

doFinal

public int doFinal(byte[] pOut,
 int pOutOffset)

Description copied from interface: Digest

close the digest, producing the final digest value. The doFinal call leaves the digest reset.

Specified by:

doFinal in interface Digest

Parameters:

pOut - the array the digest is to be copied into.

pOutOffset - the offset into the out array the digest is to start at.

doFinal

public int doFinal(byte[] pOut,
 int pOutOffset,
 int pOutLen)

Description copied from interface: Xof

Output the results of the final calculation for this digest to outLen number of bytes.

Specified by:

doFinal in interface Xof

Parameters:

pOut - output array to write the output bytes to.

pOutOffset - offset to start writing the bytes at.

pOutLen - the number of output bytes requested.

Returns:

the number of bytes written

doOutput

public int doOutput(byte[] pOut,
 int pOutOffset,
 int pOutLen)

Description copied from interface: Xof

Start outputting the results of the final calculation for this digest. Unlike doFinal, this method will continue producing output until the Xof is explicitly reset, or signals otherwise.

Specified by:

doOutput in interface Xof

Parameters:

pOut - output array to write the output bytes to.

pOutOffset - offset to start writing the bytes at.

pOutLen - the number of output bytes requested.

Returns:

the number of bytes written

reset

public void reset()

Description copied from interface: Digest

reset the digest back to it's initial state.

Specified by:

reset in interface Digest