org.bouncycastle.crypto.digests

Class MD2Digest

Implemented Interfaces:
Digest, ExtendedDigest

public class MD2Digest
extends java.lang.Object
implements ExtendedDigest

implementation of MD2 as outlined in RFC1319 by B.Kaliski from RSA Laboratories April 1992

Constructor Summary

MD2Digest()
MD2Digest(MD2Digest t)

Method Summary

int
doFinal(byte[] out, int outOff)
close the digest, producing the final digest value.
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.
protected void
processBlock(byte[] m)
protected void
processCheckSum(byte[] m)
void
reset()
reset the digest back to it's initial state.
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.

Constructor Details

MD2Digest

public MD2Digest()

MD2Digest

public MD2Digest(MD2Digest t)

Method Details

doFinal

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

getAlgorithmName

public String getAlgorithmName()
return the algorithm name
Specified by:
getAlgorithmName in interface Digest
Returns:
the algorithm name

getByteLength

public int getByteLength()
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()
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.

processBlock

protected void processBlock(byte[] m)

processCheckSum

protected void processCheckSum(byte[] m)

reset

public void reset()
reset the digest back to it's initial state.
Specified by:
reset in interface Digest

update

public void update(byte in)
update the message digest with a single byte.
Specified by:
update in interface Digest
Parameters:
in - the input byte to be entered.

update

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