org.bouncycastle.crypto.digests
Class RIPEMD320Digest

java.lang.Object
  org.bouncycastle.crypto.digests.GeneralDigest
      org.bouncycastle.crypto.digests.RIPEMD320Digest

All Implemented Interfaces:

Digest, ExtendedDigest

public class RIPEMD320Digest
extends GeneralDigest

implementation of RIPEMD 320.

Note: this implementation offers the same level of security as RIPEMD 160.

Field Summary

private static int	DIGEST_LENGTH
private int	H0
private int	H1
private int	H2
private int	H3
private int	H4
private int	H5
private int	H6
private int	H7
private int	H8
private int	H9
private int[]	X
private int	xOff

Constructor Summary

RIPEMD320Digest()
Standard constructor

RIPEMD320Digest(RIPEMD320Digest t)
Copy constructor.

Method Summary

int	doFinal(byte[] out, int outOff) close the digest, producing the final digest value.
private int	f1(int x, int y, int z)
private int	f2(int x, int y, int z)
private int	f3(int x, int y, int z)
private int	f4(int x, int y, int z)
private int	f5(int x, int y, int z)
java.lang.String	getAlgorithmName() return the algorithm name
int	getDigestSize() return the size, in bytes, of the digest produced by this message digest.
protected void	processBlock()
protected void	processLength(long bitLength)
protected void	processWord(byte[] in, int inOff)
void	reset() reset the chaining variables to the IV values.
private int	RL(int x, int n)
private void	unpackWord(int word, byte[] out, int outOff)

Methods inherited from class org.bouncycastle.crypto.digests.GeneralDigest

finish, getByteLength, update, update

Methods inherited from class java.lang.Object

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

Field Detail

DIGEST_LENGTH

private static final int DIGEST_LENGTH

See Also:

Constant Field Values

H0

private int H0

H1

private int H1

H2

private int H2

H3

private int H3

H4

private int H4

H5

private int H5

H6

private int H6

H7

private int H7

H8

private int H8

H9

private int H9

X

private int[] X

xOff

private int xOff

Constructor Detail

RIPEMD320Digest

public RIPEMD320Digest()

Standard constructor

RIPEMD320Digest

public RIPEMD320Digest(RIPEMD320Digest t)

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

Method Detail

getAlgorithmName

public java.lang.String getAlgorithmName()

Description copied from interface: Digest

return the algorithm name

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.

Returns:

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

processWord

protected void processWord(byte[] in,
                           int inOff)

Specified by:

processWord in class GeneralDigest

processLength

protected void processLength(long bitLength)

Specified by:

processLength in class GeneralDigest

unpackWord

private void unpackWord(int word,
                        byte[] out,
                        int outOff)

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.

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 to the IV values.

Specified by:

reset in interface Digest

Overrides:

reset in class GeneralDigest

RL

private final int RL(int x,
                     int n)

f1

private final int f1(int x,
                     int y,
                     int z)

f2

private final int f2(int x,
                     int y,
                     int z)

f3

private final int f3(int x,
                     int y,
                     int z)

f4

private final int f4(int x,
                     int y,
                     int z)

f5

private final int f5(int x,
                     int y,
                     int z)

processBlock

protected void processBlock()

Specified by:

processBlock in class GeneralDigest