org.bouncycastle.crypto.digests
Class WhirlpoolDigest

java.lang.Object
  org.bouncycastle.crypto.digests.WhirlpoolDigest

All Implemented Interfaces:

Digest, ExtendedDigest

public final class WhirlpoolDigest
extends java.lang.Object
implements ExtendedDigest

Implementation of WhirlpoolDigest, based on Java source published by Barreto and Rijmen.

Field Summary

private short[]	_bitCount
private long[]	_block
private byte[]	_buffer
private int	_bufferPos
private long[]	_hash
private long[]	_K
private long[]	_L
private long[]	_rc
private long[]	_state
private static int	BITCOUNT_ARRAY_SIZE
private static int	BYTE_LENGTH
private static long[]	C0
private static long[]	C1
private static long[]	C2
private static long[]	C3
private static long[]	C4
private static long[]	C5
private static long[]	C6
private static long[]	C7
private static int	DIGEST_LENGTH_BYTES
private static short[]	EIGHT
private static int	REDUCTION_POLYNOMIAL
private static int	ROUNDS
private static int[]	SBOX

Constructor Summary

WhirlpoolDigest()

WhirlpoolDigest(WhirlpoolDigest originalDigest)
Copy constructor.

Method Summary

private long	bytesToLongFromBuffer(byte[] buffer, int startPos)
private void	convertLongToByteArray(long inputLong, byte[] outputArray, int offSet)
private byte[]	copyBitLength()
int	doFinal(byte[] out, int outOff) close the digest, producing the final digest value.
private void	finish()
java.lang.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.
private void	increment()
private int	maskWithReductionPolynomial(int input)
private long	packIntoLong(int b7, int b6, int b5, int b4, int b3, int b2, int b1, int b0)
protected void	processBlock()
private void	processFilledBuffer(byte[] in, int inOff)
void	reset() reset the chaining variables
void	update(byte in) update the message digest with a single byte.
void	update(byte[] in, int inOff, int len) 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

Field Detail

BYTE_LENGTH

private static final int BYTE_LENGTH

See Also:

Constant Field Values

DIGEST_LENGTH_BYTES

private static final int DIGEST_LENGTH_BYTES

See Also:

Constant Field Values

ROUNDS

private static final int ROUNDS

See Also:

Constant Field Values

REDUCTION_POLYNOMIAL

private static final int REDUCTION_POLYNOMIAL

See Also:

Constant Field Values

SBOX

private static final int[] SBOX

C0

private static final long[] C0

C1

private static final long[] C1

C2

private static final long[] C2

C3

private static final long[] C3

C4

private static final long[] C4

C5

private static final long[] C5

C6

private static final long[] C6

C7

private static final long[] C7

_rc

private final long[] _rc

BITCOUNT_ARRAY_SIZE

private static final int BITCOUNT_ARRAY_SIZE

See Also:

Constant Field Values

_buffer

private byte[] _buffer

_bufferPos

private int _bufferPos

_bitCount

private short[] _bitCount

_hash

private long[] _hash

_K

private long[] _K

_L

private long[] _L

_block

private long[] _block

_state

private long[] _state

EIGHT

private static final short[] EIGHT

Constructor Detail

WhirlpoolDigest

public WhirlpoolDigest()

WhirlpoolDigest

public WhirlpoolDigest(WhirlpoolDigest originalDigest)

Copy constructor. This will copy the state of the provided message digest.

Method Detail

packIntoLong

private long packIntoLong(int b7,
                          int b6,
                          int b5,
                          int b4,
                          int b3,
                          int b2,
                          int b1,
                          int b0)

maskWithReductionPolynomial

private int maskWithReductionPolynomial(int input)

getAlgorithmName

public java.lang.String getAlgorithmName()

Description copied from interface: Digest

return the algorithm name

Specified by:

getAlgorithmName in interface Digest

Returns:

the algorithm name

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.

doFinal

public int doFinal(byte[] out,
                   int outOff)

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:

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

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

reset

public void reset()

reset the chaining variables

Specified by:

reset in interface Digest

processFilledBuffer

private void processFilledBuffer(byte[] in,
                                 int inOff)

bytesToLongFromBuffer

private long bytesToLongFromBuffer(byte[] buffer,
                                   int startPos)

convertLongToByteArray

private void convertLongToByteArray(long inputLong,
                                    byte[] outputArray,
                                    int offSet)

processBlock

protected void processBlock()

update

public void update(byte in)

Description copied from interface: Digest

update the message digest with a single byte.

Specified by:

update in interface Digest

Parameters:

in - the input byte to be entered.

increment

private void increment()

update

public void update(byte[] in,
                   int inOff,
                   int len)

Description copied from interface: Digest

update the message digest with a block of bytes.

Specified by:

update in interface Digest

Parameters:

in - the byte array containing the data.

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

len - the length of the data.

finish

private void finish()

copyBitLength

private byte[] copyBitLength()

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.