sha1hasher.java

java 文件下载器。可自定义

// Decompiled by Jad v1.5.8e2. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://kpdus.tripod.com/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi space 
// Source File Name:   SHA1Hasher.java

package org.gudy.azureus2.core3.util;

import java.nio.ByteBuffer;

// Referenced classes of package org.gudy.azureus2.core3.util:
//			HashWrapper, SHA1

public final class SHA1Hasher
{

	private final SHA1 sha1 = new SHA1();

	public SHA1Hasher()
	{
	}

	public byte[] calculateHash(byte bytes[])
	{
		ByteBuffer buff = ByteBuffer.wrap(bytes);
		return calculateHash(buff);
	}

	public byte[] calculateHash(ByteBuffer buffer)
	{
		sha1.reset();
		return sha1.digest(buffer);
	}

	public void update(byte data[])
	{
		update(ByteBuffer.wrap(data));
	}

	public void update(byte data[], int pos, int len)
	{
		update(ByteBuffer.wrap(data, pos, len));
	}

	public void update(ByteBuffer buffer)
	{
		sha1.update(buffer);
	}

	public byte[] getDigest()
	{
		return sha1.digest();
	}

	public HashWrapper getHash()
	{
		return new HashWrapper(sha1.digest());
	}

	public void reset()
	{
		sha1.reset();
	}

	public void saveHashState()
	{
		sha1.saveState();
	}

	public void restoreHashState()
	{
		sha1.restoreState();
	}
}