Package org.apache.sshd.common.mac

Class BaseMac

java.lang.Object

org.apache.sshd.common.mac.BaseMac

All Implemented Interfaces:

AlgorithmNameProvider, Mac, MacInformation

public class BaseMac
extends Object
implements Mac

Base class for Mac implementations based on the JCE provider.

Author:

Apache MINA SSHD Project

Constructor Summary

Constructors

Constructor	Description
BaseMac(String algorithm, int bsize, int defbsize, boolean etmMode)

Method Summary

Modifier and Type	Method	Description
void	doFinal(byte[] buf, int offset)
String	getAlgorithm()
int	getBlockSize()
int	getDefaultBlockSize()
void	init(byte[] key)
boolean	isEncryptThenMac()
String	toString()
void	update(byte[] buf, int offset, int len)
void	updateUInt(long i)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.sshd.common.mac.Mac

doFinal, doFinal, update

Constructor Detail

BaseMac

public BaseMac(String algorithm,
               int bsize,
               int defbsize,
               boolean etmMode)

Method Detail

getAlgorithm

public String getAlgorithm()

Specified by:

getAlgorithm in interface AlgorithmNameProvider

getBlockSize

public int getBlockSize()

Specified by:

getBlockSize in interface MacInformation

Returns:

MAC output block size in bytes - may be less than the default - e.g., MD5-96

getDefaultBlockSize

public int getDefaultBlockSize()

Specified by:

getDefaultBlockSize in interface MacInformation

Returns:

The "natural" MAC block size in bytes

isEncryptThenMac

public boolean isEncryptThenMac()

Specified by:

isEncryptThenMac in interface MacInformation

init

public void init(byte[] key)
          throws Exception

Specified by:

init in interface Mac

Throws:

Exception

updateUInt

public void updateUInt(long i)

Specified by:

updateUInt in interface Mac

update

public void update(byte[] buf,
                   int offset,
                   int len)

Specified by:

update in interface Mac

doFinal

public void doFinal(byte[] buf,
                    int offset)
             throws Exception

Specified by:

doFinal in interface Mac

Throws:

Exception

toString

public String toString()

Overrides:

toString in class Object