Module seppiko.commons.utils

Package org.seppiko.commons.utils.crypto

Class CRC16MAXIM

java.lang.Object

org.seppiko.commons.utils.crypto.CRC16MAXIM

All Implemented Interfaces:

Checksum

public class CRC16MAXIM
extends Object
implements Checksum

A class that can be used to compute the CRC-16 of a data stream. With MAXIM

Author:

Leonard Woo

Constructor Summary

Constructors

Constructor	Description
CRC16MAXIM()	Create CRC-16 object

Method Summary

Modifier and Type	Method	Description
long	getValue()	Returns CRC-16 value.
void	reset()	Resets CRC-16 to initial value.
void	update(byte[] b, int off, int len)	Updates the CRC-16 checksum with the specified array of bytes.
void	update(int b)	Updates the CRC-16 checksum with the specified byte.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.zip.Checksum

update, update

Constructor Details

CRC16MAXIM

public CRC16MAXIM()

Create CRC-16 object

Method Details

update

public void update(int b)

Updates the CRC-16 checksum with the specified byte.

Specified by:

update in interface Checksum

Parameters:

b - number

update

public void update(byte[] b,
 int off,
 int len)
            throws NullPointerException,
ArrayIndexOutOfBoundsException

Updates the CRC-16 checksum with the specified array of bytes.

Specified by:

update in interface Checksum

Parameters:

b - data

off - data init offset

len - data length

Throws:

NullPointerException - data is null

ArrayIndexOutOfBoundsException - if off is negative, or len is negative, or off+len is negative or greater than the length of the array b

getValue

public long getValue()

Returns CRC-16 value.

Specified by:

getValue in interface Checksum

Returns:

CRC-16

reset

public void reset()

Resets CRC-16 to initial value.

Specified by:

reset in interface Checksum