com.alibaba.sdk.android.oss.common.utils

Class CRC64

java.lang.Object

com.alibaba.sdk.android.oss.common.utils.CRC64

All Implemented Interfaces:

java.util.zip.Checksum

public class CRC64
extends java.lang.Object
implements java.util.zip.Checksum

CRC-64 implementation with ability to combine checksums calculated over different blocks of data. Standard ECMA-182, http://www.ecma-international.org/publications/standards/Ecma-182.htm

Constructor Summary

Constructors

Constructor and Description
CRC64() Initialize with a value of zero.

Method Summary

Modifier and Type	Method and Description
static long	combine(long crcLast, long crcNext, long len2)
long	getValue() Get long representation of current CRC64 value.
void	reset()
void	update(byte[] b, int len) Update CRC64 with new byte block.
void	update(byte[] b, int off, int len)
void	update(int val)

Methods inherited from class java.lang.Object

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

Constructor Detail

CRC64

public CRC64()

Initialize with a value of zero.

Method Detail

combine

public static long combine(long crcLast,
                           long crcNext,
                           long len2)

getValue

public long getValue()

Get long representation of current CRC64 value.

Specified by:

getValue in interface java.util.zip.Checksum

reset

public void reset()

Specified by:

reset in interface java.util.zip.Checksum

update

public void update(int val)

Specified by:

update in interface java.util.zip.Checksum

update

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

Update CRC64 with new byte block.

update

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

Specified by:

update in interface java.util.zip.Checksum