org.indunet.fastproto.checksum

类 CRC32

java.lang.Object

org.indunet.fastproto.checksum.CRC

org.indunet.fastproto.checksum.CRC32

public class CRC32
extends CRC

The CRC32 class implements the CRC interface and calculates CRC32 checksums. It uses DEFAULT_POLYNOMIAL and DEFAULT_INITIAL_VALUE as defaults. These constants may be changed in the constructor or dynamically via setPolynomial(int) and setInitialValue(int).

从以下版本开始:

3.11.0

作者:

Deng Ran

字段概要

字段

限定符和类型	字段和说明
protected int[]	crcTable
static int	DEFAULT_INITIAL_VALUE
static int	DEFAULT_POLYNOMIAL
protected static int[]	DEFAULT_TABLE
protected int	initialValue
protected int	polynomial

构造器概要

构造器

构造器和说明
CRC32()
CRC32(int polynomial, int initialValue)

方法概要

限定符和类型	方法和说明
protected static int[]	buildTable(int polynomial)
int	calculate(byte[] data) Calculate the CRC value of the given data.
int	getInitialValue() Get the initial value for CRC verification.
int	getPolynomial() Get the polynomial for CRC verification.
void	setInitialValue(int initialValue) Set the initial value for CRC verification.
void	setPolynomial(int polynomial) Set the polynomial for CRC verification.

从类继承的方法 org.indunet.fastproto.checksum.CRC

reverseBits, reverseBits

从类继承的方法 java.lang.Object

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

字段详细资料

DEFAULT_POLYNOMIAL

public static final int DEFAULT_POLYNOMIAL

另请参阅:

常量字段值

DEFAULT_INITIAL_VALUE

public static final int DEFAULT_INITIAL_VALUE

另请参阅:

常量字段值

DEFAULT_TABLE

protected static final int[] DEFAULT_TABLE

polynomial

protected int polynomial

initialValue

protected int initialValue

crcTable

protected int[] crcTable

构造器详细资料

CRC32

public CRC32()

CRC32

public CRC32(int polynomial,
             int initialValue)

方法详细资料

buildTable

protected static int[] buildTable(int polynomial)

getPolynomial

public int getPolynomial()

从类复制的说明: CRC

Get the polynomial for CRC verification.

指定者:

getPolynomial 在类中 CRC

返回:

The polynomial for CRC verification.

setPolynomial

public void setPolynomial(int polynomial)

从类复制的说明: CRC

Set the polynomial for CRC verification.

指定者:

setPolynomial 在类中 CRC

参数:

polynomial - The polynomial for CRC verification.

getInitialValue

public int getInitialValue()

从类复制的说明: CRC

Get the initial value for CRC verification.

指定者:

getInitialValue 在类中 CRC

返回:

The initial value for CRC verification.

setInitialValue

public void setInitialValue(int initialValue)

从类复制的说明: CRC

Set the initial value for CRC verification.

指定者:

setInitialValue 在类中 CRC

参数:

initialValue - The initial value for CRC verification.

calculate

public int calculate(byte[] data)

从类复制的说明: CRC

Calculate the CRC value of the given data.

指定者:

calculate 在类中 CRC

参数:

data - The data to be verified by CRC.

返回:

The calculated CRC value.