org.eclipse.jgit.internal.storage.io

Class NullMessageDigest

java.lang.Object

java.security.MessageDigestSpi

java.security.MessageDigest

org.eclipse.jgit.internal.storage.io.NullMessageDigest

public final class NullMessageDigest
extends MessageDigest

Dummy message digest consisting of only null bytes with the length of an ObjectId. This class can be used to skip computing a real digest.

Method Summary

Modifier and Type	Method and Description
protected byte[]	engineDigest()
protected void	engineReset()
protected void	engineUpdate(byte input)
protected void	engineUpdate(byte[] input, int offset, int len)
static MessageDigest	getInstance() Get the only instance of NullMessageDigest

Methods inherited from class java.security.MessageDigest

clone, digest, digest, digest, getAlgorithm, getDigestLength, getInstance, getInstance, getInstance, getProvider, isEqual, reset, toString, update, update, update, update

Methods inherited from class java.security.MessageDigestSpi

engineDigest, engineGetDigestLength, engineUpdate

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static MessageDigest getInstance()

Get the only instance of NullMessageDigest

Returns:

the only instance of NullMessageDigest

engineUpdate

protected void engineUpdate(byte input)

Specified by:

engineUpdate in class MessageDigestSpi

engineUpdate

protected void engineUpdate(byte[] input,
                            int offset,
                            int len)

Specified by:

engineUpdate in class MessageDigestSpi

engineDigest

protected byte[] engineDigest()

Specified by:

engineDigest in class MessageDigestSpi

engineReset

protected void engineReset()

Specified by:

engineReset in class MessageDigestSpi