com.ksyun.ks3.utils

类 CRC64

java.lang.Object

com.ksyun.ks3.utils.CRC64

所有已实现的接口:

Checksum

public class CRC64
extends Object
implements Checksum

CRC-64 implementation with ability to combine checksums calculated over different blocks of data. Standard ECMA-182, ECMA-182

构造器概要

构造器

构造器和说明
CRC64()
CRC64(byte[] b, int len)
CRC64(long value)

方法概要

方法

限定符和类型	方法和说明
static CRC64	combine(CRC64 sum1, CRC64 sum2, long len2)
static long	combine(long crc1, long crc2, long len2)
static CRC64	fromBytes(byte[] b) Construct new CRC64 instance from byte array.
byte[]	getBytes() Get 8 byte representation of current CRC64 value.
long	getValue() Get long representation of current CRC64 value.
void	reset()
void	update(byte b) Update CRC64 with new byte.
void	update(byte[] b, int len) Update CRC64 with new byte block.
void	update(byte[] b, int off, int len)
void	update(int b)

从类继承的方法 java.lang.Object

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

构造器详细资料

CRC64

public CRC64()

CRC64

public CRC64(long value)

CRC64

public CRC64(byte[] b,
     int len)

方法详细资料

fromBytes

public static CRC64 fromBytes(byte[] b)

Construct new CRC64 instance from byte array.

参数:

b - the buffer into which the data is read.

返回:

a CRC64 instance.

getBytes

public byte[] getBytes()

Get 8 byte representation of current CRC64 value.

返回:

a CRC64 value in 8 byte.

getValue

public long getValue()

Get long representation of current CRC64 value.

指定者:

getValue 在接口中 Checksum

返回:

a CRC64 value in long type.

update

public void update(byte[] b,
          int len)

Update CRC64 with new byte block.

参数:

b - the buffer into which the data is read.

len - the maximum number of bytes to read.

update

public void update(byte b)

Update CRC64 with new byte.

参数:

b - the byte.

update

public void update(int b)

指定者:

update 在接口中 Checksum

update

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

指定者:

update 在接口中 Checksum

reset

public void reset()

指定者:

reset 在接口中 Checksum

combine

public static CRC64 combine(CRC64 sum1,
            CRC64 sum2,
            long len2)

combine

public static long combine(long crc1,
           long crc2,
           long len2)