Package org.apache.sshd.common.mac

Class Poly1305Mac

java.lang.Object

org.apache.sshd.common.mac.Poly1305Mac

All Implemented Interfaces:

AlgorithmNameProvider, Mac, MacInformation

public class Poly1305Mac
extends Object
implements Mac

Poly1305 one-time message authentication code. This implementation is derived from the public domain C library poly1305-donna.

See Also:

• The Poly1305-AES message-authentication code

Field Summary

Fields

Modifier and Type	Field	Description
static final int	KEY_BYTES

Constructor Summary

Constructors

Constructor	Description
Poly1305Mac()

Method Summary

Modifier and Type	Method	Description
void	doFinal(byte[] out, int offset)
String	getAlgorithm()
int	getBlockSize()
int	getDefaultBlockSize()
void	init(byte[] key)
static void	packIntLE(int value, byte[] dst, int off)
static int	unpackIntLE(byte[] buf, int off)
void	update(byte[] in, int offset, int length)
void	updateUInt(long value)

Methods inherited from class java.lang.Object

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

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

doFinal, doFinal, update

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

isEncryptThenMac

Field Details

KEY_BYTES

public static final int KEY_BYTES

See Also:

• Constant Field Values

Constructor Details

Poly1305Mac

public Poly1305Mac()

Method Details

getAlgorithm

public String getAlgorithm()

Specified by:

getAlgorithm in interface AlgorithmNameProvider

init

public void init(byte[] key)
          throws Exception

Specified by:

init in interface Mac

Throws:

Exception

update

public void update(byte[] in,
 int offset,
 int length)

Specified by:

update in interface Mac

updateUInt

public void updateUInt(long value)

Specified by:

updateUInt in interface Mac

doFinal

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

Specified by:

doFinal in interface Mac

Throws:

Exception

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

unpackIntLE

public static int unpackIntLE(byte[] buf,
 int off)

packIntLE

public static void packIntLE(int value,
 byte[] dst,
 int off)