/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package gplx.security; import gplx.*;
import gplx.ios.*; /*IoStream*/
public class HashAlgo_tth192 implements HashAlgo {
	public String Key() {return KEY;} public static final String KEY = "tth192";
	public int BlockSize() {return blockSize;} public void BlockSize_set(int v) {blockSize = v;} int blockSize = 1024;
	public byte[] Calc_hash_bry(byte[] v) {return Bry_.new_ascii_(CalcHash(ConsoleDlg_.Null, gplx.ios.IoStream_.ary_(v)));}
	public String CalcHash(ConsoleDlg dialog, IoStream stream) {
		int leafCount = (int)(stream.Len() / blockSize);
		HashDlgWtr dialogWtr = HashDlgWtr_.Current;
		dialogWtr.Bgn(dialog, stream.Url(), CalcWorkUnits(stream.Len()));
		if (stream.Len() % blockSize > 0)	// if stream.length is not multiple of blockSize, add another leaf to hold leftover bytes
			leafCount++;						
		else if (stream.Len() == 0)		// if stream.length == 0, still allocate one leaf
			leafCount = 1;

		hashMain = new byte[(leafCount / 2) + 1][];	// / 2 b/c HashAllBytes looks at pairs of slots; + 1 to avoid truncation
		hashMainCount = 0;
		HashAllBytes(dialogWtr, stream, leafCount);
		byte[] rv = HashAllHashes(dialogWtr);
		return HashAlgoUtl.XtoStrBase32(rv);
	}
	byte[] CalcHash_next(IoStream stream) {
		if (blockA == null || blockA.length != blockSize) blockA = new byte[blockSize];
		if (blockB == null || blockB.length != blockSize) blockB = new byte[blockSize];

		int dataSize = stream.Read(blockA, 0, blockSize); // if (dataSize < BlockSize) return (CalcHash_leaf(ShrinkArray(blockA, dataSize))); // TODO: reinstate?
		dataSize = stream.Read(blockB, 0, blockSize);
		if (dataSize < blockSize) blockB = ShrinkArray(blockB, dataSize);	// shrink array to match data size (occurs at end of stream, when lastBytesCount < BlockSize)
		return CalcHash_branch(CalcHash_leaf(blockA, 0), CalcHash_leaf(blockB, 1));
	}
	void HashAllBytes(HashDlgWtr dialogWtr, IoStream stream, int leafCount) {
		int total = leafCount / 2;
		for (int i = 0; i < total; i++) {
			if (dialogWtr.Canceled()) dialogWtr.Fail(stream);
			hashMain[hashMainCount++] = CalcHash_next(stream);
			dialogWtr.Do(2);
		}
		if (leafCount % 2 == 1) {												// odd number of leaves => hash last leaf (since it was never in a pair)
			byte[] block = new byte[blockSize];
			int dataSize = stream.Read(block, 0 , blockSize);
			if (dataSize < blockSize) block = ShrinkArray(block,dataSize);		// shrink array to match data size (occurs at end of stream, when lastBytesCount < BlockSize)

			hashMain[hashMainCount++] = CalcHash_leaf(block, 0);
			dialogWtr.Do(1);
		}
		stream.Rls();
	}
	byte[] HashAllHashes(HashDlgWtr dialogWtr) {
		int currIdx = 0, lastIdx = hashMainCount - 1, reuseIdx = 0;
		while (currIdx < lastIdx) {											// calc till 1 is left;
			while (currIdx < lastIdx) {										// calc till 1 is left; EX: 8 slots; loop1 calcs 8; makes 4; loop0 restarts; loop1 calcs 4; makes 2; etc..
				byte[] hashA = hashMain[currIdx++];
				byte[] hashB = hashMain[currIdx++];						
				hashMain[reuseIdx++] = CalcHash_branch(hashA, hashB);
				dialogWtr.Do(2);
			}				
			if (currIdx == lastIdx)											// NOTE: currIdx == lastIdx only when odd number of leaves
				hashMain[reuseIdx++] = hashMain[currIdx++];
//				for (int j = reuseIdx; j < lastIdx; j++)						// PERF: free unused slots (may not be necessary)
//					hashMain[j] = null;
			lastIdx = reuseIdx - 1;
			currIdx = 0;
			reuseIdx = 0;
		};
		dialogWtr.End();
  			return (byte[])hashMain[lastIdx];									// return last hash as root hash
	}
	byte[] CalcHash_branch(byte[] blockA, byte[] blockB) {
		// gen array: [0x01] + [blockA] + [blockB]
		if (branchRv == null || branchRv.length != blockA.length + blockB.length + 1)
			branchRv = new byte[blockA.length + blockB.length + 1];
		branchRv[0] = 0x01;		// branch hash mark.
		Array_.CopyTo(blockA, branchRv, 1);
		Array_.CopyTo(blockB, branchRv, blockA.length + 1);
		return CalcHash(branchRv);
	}
	byte[] CalcHash_leaf(byte[] raw, int i) {
		// gen array: [0x00] + [raw]
		byte[] rv = null;
		if (i == 0) {
			if (leaf0 == null || leaf0.length != raw.length + 1) {
				leaf0 = new byte[raw.length + 1];
			}
			rv = leaf0;
		}
		else {
			if (leaf1 == null || leaf1.length != raw.length + 1) {
				leaf1 = new byte[raw.length + 1];
			}
			rv = leaf1;
		}

		rv[0] = 0x00;		// leaf hash mark.
		Array_.CopyTo(raw, rv, 1);
		return CalcHash(rv);
	}
	byte[] CalcHash(byte[] raw) {
		algo.Initialize();
		return algo.ComputeHash(raw);
	}
	byte[] ShrinkArray(byte[] raw, int newLen) {
		byte[] rv = new byte[newLen];
		for (int i = 0; i < newLen; i++)
			rv[i] = raw[i];
		return rv;
	}
	public int CalcWorkUnits(long streamLength) {
		int leafCount = (int)(streamLength / blockSize);
		int phase1 = leafCount;
		if (leafCount == 0) phase1 = 1;
		else if (streamLength % blockSize != 0) phase1++;
		int phase2 = phase1 <= 1 ? 0 : phase1 - 1;	// see note
		return phase1 + phase2;
	}
	Tiger192 algo = new Tiger192();
	byte[][] hashMain; int hashMainCount = 0;
	byte[] blockA, blockB, branchRv, leaf0, leaf1; 
	public static HashAlgo_tth192 new_() {return new HashAlgo_tth192();} HashAlgo_tth192() {}
}
interface HashDlgWtr {
	boolean Canceled();
	void Bgn(ConsoleDlg dialog, Io_url url, int total);
	void Do(int increment);
	void End();
	void Fail(IoStream stream);
}
class HashDlgWtr_ {
	public static HashDlgWtr Current = HashDlgWtrDefault.new_();
}
class HashDlgWtrDefault implements HashDlgWtr {
	public int Total() {return total;} int total;
	public int LastPercentage() {return lastPercentage;} int lastPercentage = 0;
	public int Current() {return current;} int current = 0;
	public boolean Canceled() {return dialog.CanceledChk();}
	String p;
	public void Bgn(ConsoleDlg dialog, Io_url url, int total) {
		this.dialog = dialog; this.total = total;
		p = url.Xto_api() + " - hash: ";
		this.lastPercentage = 0; this.current = 0;
	}
	public void Do(int increment) {
		current += increment;
		int percentage = (current * 100) / total;
		if (percentage <= lastPercentage) return;
		dialog.WriteTempText(String_.LimitToFirst(p, dialog.CharsPerLineMax()) + Int_.Xto_str(percentage) + "%");
		lastPercentage = percentage;			
	}
	public void End() {}
	public void Fail(IoStream stream) {
		//			stream.Dispose();
	}
	ConsoleDlg dialog;
	public static HashDlgWtrDefault new_() {return new HashDlgWtrDefault();}
}
class Tiger192 extends BaseHash {
	public void Initialize() {
		this.resetContext();		
	}
	public byte[] ComputeHash(byte[] input) {
		this.update(input, 0, input.length);
		return this.digest();
	}
	protected byte[] padBuffer() {
		int n = (int) (count % BLOCK_SIZE);
		int padding = (n < 56) ? (56 - n) : (120 - n);
		byte[] pad = new byte[padding + 8];

		pad[0] = 1;
		long bits = count << 3;

		pad[padding++] = (byte)  bits;
		pad[padding++] = (byte) (bits >>>  8);
		pad[padding++] = (byte) (bits >>> 16);
		pad[padding++] = (byte) (bits >>> 24);
		pad[padding++] = (byte) (bits >>> 32);
		pad[padding++] = (byte) (bits >>> 40);
		pad[padding++] = (byte) (bits >>> 48);
		pad[padding  ] = (byte) (bits >>> 56);

		return pad;
	}

	protected byte[] getResult() {
		return new byte[] {
			(byte) a		  , (byte)(a >>>  8), (byte)(a >>> 16),
			(byte)(a >>> 24), (byte)(a >>> 32), (byte)(a >>> 40),
			(byte)(a >>> 48), (byte)(a >>> 56),
			(byte) b		  , (byte)(b >>>  8), (byte)(b >>> 16),
			(byte)(b >>> 24), (byte)(b >>> 32), (byte)(b >>> 40),
			(byte)(b >>> 48), (byte)(b >>> 56),
			(byte) c		  , (byte)(c >>>  8), (byte)(c >>> 16),
			(byte)(c >>> 24), (byte)(c >>> 32), (byte)(c >>> 40),
			(byte)(c >>> 48), (byte)(c >>> 56)
		};
	}

	protected void resetContext() {
		a = A;
		b = B;
		c = C;
	}
	protected void transform(byte[] in, int offset) {
		long x0, x1, x2, x3, x4, x5, x6, x7;

		x0 = ((long) in[offset++] & 0xFF)		  | ((long)(in[offset++] & 0xFF) <<  8)
			| ((long)(in[offset++] & 0xFF) << 16) | ((long)(in[offset++] & 0xFF) << 24)
			| ((long)(in[offset++] & 0xFF) << 32) | ((long)(in[offset++] & 0xFF) << 40)
			| ((long)(in[offset++] & 0xFF) << 48) | ((long)(in[offset++] & 0xFF) << 56);
		x1 = ((long) in[offset++] & 0xFF)		  | ((long)(in[offset++] & 0xFF) <<  8)
			| ((long)(in[offset++] & 0xFF) << 16) | ((long)(in[offset++] & 0xFF) << 24)
			| ((long)(in[offset++] & 0xFF) << 32) | ((long)(in[offset++] & 0xFF) << 40)
			| ((long)(in[offset++] & 0xFF) << 48) | ((long)(in[offset++] & 0xFF) << 56);
		x2 = ((long) in[offset++] & 0xFF)		  | ((long)(in[offset++] & 0xFF) <<  8)
			| ((long)(in[offset++] & 0xFF) << 16) | ((long)(in[offset++] & 0xFF) << 24)
			| ((long)(in[offset++] & 0xFF) << 32) | ((long)(in[offset++] & 0xFF) << 40)
			| ((long)(in[offset++] & 0xFF) << 48) | ((long)(in[offset++] & 0xFF) << 56);
		x3 = ((long) in[offset++] & 0xFF)		  | ((long)(in[offset++] & 0xFF) <<  8)
			| ((long)(in[offset++] & 0xFF) << 16) | ((long)(in[offset++] & 0xFF) << 24)
			| ((long)(in[offset++] & 0xFF) << 32) | ((long)(in[offset++] & 0xFF) << 40)
			| ((long)(in[offset++] & 0xFF) << 48) | ((long)(in[offset++] & 0xFF) << 56);
		x4 = ((long) in[offset++] & 0xFF)		  | ((long)(in[offset++] & 0xFF) <<  8)
			| ((long)(in[offset++] & 0xFF) << 16) | ((long)(in[offset++] & 0xFF) << 24)
			| ((long)(in[offset++] & 0xFF) << 32) | ((long)(in[offset++] & 0xFF) << 40)
			| ((long)(in[offset++] & 0xFF) << 48) | ((long)(in[offset++] & 0xFF) << 56);
		x5 = ((long) in[offset++] & 0xFF)		  | ((long)(in[offset++] & 0xFF) <<  8)
			| ((long)(in[offset++] & 0xFF) << 16) | ((long)(in[offset++] & 0xFF) << 24)
			| ((long)(in[offset++] & 0xFF) << 32) | ((long)(in[offset++] & 0xFF) << 40)
			| ((long)(in[offset++] & 0xFF) << 48) | ((long)(in[offset++] & 0xFF) << 56);
		x6 = ((long) in[offset++] & 0xFF)		  | ((long)(in[offset++] & 0xFF) <<  8)
			| ((long)(in[offset++] & 0xFF) << 16) | ((long)(in[offset++] & 0xFF) << 24)
			| ((long)(in[offset++] & 0xFF) << 32) | ((long)(in[offset++] & 0xFF) << 40)
			| ((long)(in[offset++] & 0xFF) << 48) | ((long)(in[offset++] & 0xFF) << 56);
		x7 = ((long) in[offset++] & 0xFF)		  | ((long)(in[offset++] & 0xFF) <<  8)
			| ((long)(in[offset++] & 0xFF) << 16) | ((long)(in[offset++] & 0xFF) << 24)
			| ((long)(in[offset++] & 0xFF) << 32) | ((long)(in[offset++] & 0xFF) << 40)
			| ((long)(in[offset++] & 0xFF) << 48) | ((long)(in[offset  ] & 0xFF) << 56);

		// save_abc ::=
		long aa = a, bb = b, cc = c;

		// pass(aa, bb, cc, 5) ::=
		cc ^= x0;
		aa -= T1[(int) cc & 0xff] ^ T2[(int)(cc >> 16) & 0xff]
			 ^ T3[(int)(cc >> 32) & 0xff] ^ T4[(int)(cc >> 48) & 0xff];
		bb += T4[(int)(cc >>  8) & 0xff] ^ T3[(int)(cc >> 24) & 0xff]
			 ^ T2[(int)(cc >> 40) & 0xff] ^ T1[(int)(cc >> 56) & 0xff];
		bb *= 5;
		aa ^= x1;
		bb -= T1[(int) aa & 0xff] ^ T2[(int)(aa >> 16) & 0xff]
			 ^ T3[(int)(aa >> 32) & 0xff] ^ T4[(int)(aa >> 48) & 0xff];
		cc += T4[(int)(aa >>  8) & 0xff] ^ T3[(int)(aa >> 24) & 0xff]
			 ^ T2[(int)(aa >> 40) & 0xff] ^ T1[(int)(aa >> 56) & 0xff];
		cc *= 5;
		bb ^= x2;
		cc -= T1[(int) bb & 0xff] ^ T2[(int)(bb >> 16) & 0xff]
			 ^ T3[(int)(bb >> 32) & 0xff] ^ T4[(int)(bb >> 48) & 0xff];
		aa += T4[(int)(bb >>  8) & 0xff] ^ T3[(int)(bb >> 24) & 0xff]
			 ^ T2[(int)(bb >> 40) & 0xff] ^ T1[(int)(bb >> 56) & 0xff];
		aa *= 5;
		cc ^= x3;
		aa -= T1[(int) cc & 0xff] ^ T2[(int)(cc >> 16) & 0xff]
			 ^ T3[(int)(cc >> 32) & 0xff] ^ T4[(int)(cc >> 48) & 0xff];
		bb += T4[(int)(cc >>  8) & 0xff] ^ T3[(int)(cc >> 24) & 0xff]
			 ^ T2[(int)(cc >> 40) & 0xff] ^ T1[(int)(cc >> 56) & 0xff];
		bb *= 5;
		aa ^= x4;
		bb -= T1[(int) aa & 0xff] ^ T2[(int)(aa >> 16) & 0xff]
			 ^ T3[(int)(aa >> 32) & 0xff] ^ T4[(int)(aa >> 48) & 0xff];
		cc += T4[(int)(aa >>  8) & 0xff] ^ T3[(int)(aa >> 24) & 0xff]
			 ^ T2[(int)(aa >> 40) & 0xff] ^ T1[(int)(aa >> 56) & 0xff];
		cc *= 5;
		bb ^= x5;
		cc -= T1[(int) bb & 0xff] ^ T2[(int)(bb >> 16) & 0xff]
			 ^ T3[(int)(bb >> 32) & 0xff] ^ T4[(int)(bb >> 48) & 0xff];
		aa += T4[(int)(bb >>  8) & 0xff] ^ T3[(int)(bb >> 24) & 0xff]
			 ^ T2[(int)(bb >> 40) & 0xff] ^ T1[(int)(bb >> 56) & 0xff];
		aa *= 5;
		cc ^= x6;
		aa -= T1[(int) cc & 0xff] ^ T2[(int)(cc >> 16) & 0xff]
			 ^ T3[(int)(cc >> 32) & 0xff] ^ T4[(int)(cc >> 48) & 0xff];
		bb += T4[(int)(cc >>  8) & 0xff] ^ T3[(int)(cc >> 24) & 0xff]
			 ^ T2[(int)(cc >> 40) & 0xff] ^ T1[(int)(cc >> 56) & 0xff];
		bb *= 5;
		aa ^= x7;
		bb -= T1[(int) aa & 0xff] ^ T2[(int)(aa >> 16) & 0xff]
			 ^ T3[(int)(aa >> 32) & 0xff] ^ T4[(int)(aa >> 48) & 0xff];
		cc += T4[(int)(aa >>  8) & 0xff] ^ T3[(int)(aa >> 24) & 0xff]
			 ^ T2[(int)(aa >> 40) & 0xff] ^ T1[(int)(aa >> 56) & 0xff];
		cc *= 5;

		// key_schedule ::=
		x0 -= x7 ^ 0xA5A5A5A5A5A5A5A5L;
		x1 ^= x0;
		x2 += x1;
		x3 -= x2 ^ ((~x1) << 19);
		x4 ^= x3;
		x5 += x4;
		x6 -= x5 ^ ((~x4) >>> 23);
		x7 ^= x6;
		x0 += x7;
		x1 -= x0 ^ ((~x7) << 19);
		x2 ^= x1;
		x3 += x2;
		x4 -= x3 ^ ((~x2) >>> 23);
		x5 ^= x4;
		x6 += x5;
		x7 -= x6 ^ 0x0123456789ABCDEFL;

		// pass(cc, aa, bb, 7) ::=
		bb ^= x0;
		cc -= T1[(int) bb & 0xff] ^ T2[(int)(bb >> 16) & 0xff]
			 ^ T3[(int)(bb >> 32) & 0xff] ^ T4[(int)(bb >> 48) & 0xff];
		aa += T4[(int)(bb >>  8) & 0xff] ^ T3[(int)(bb >> 24) & 0xff]
			 ^ T2[(int)(bb >> 40) & 0xff] ^ T1[(int)(bb >> 56) & 0xff];
		aa *= 7;
		cc ^= x1;
		aa -= T1[(int) cc & 0xff] ^ T2[(int)(cc >> 16) & 0xff]
			 ^ T3[(int)(cc >> 32) & 0xff] ^ T4[(int)(cc >> 48) & 0xff];
		bb += T4[(int)(cc >>  8) & 0xff] ^ T3[(int)(cc >> 24) & 0xff]
			 ^ T2[(int)(cc >> 40) & 0xff] ^ T1[(int)(cc >> 56) & 0xff];
		bb *= 7;
		aa ^= x2;
		bb -= T1[(int) aa & 0xff] ^ T2[(int)(aa >> 16) & 0xff]
			 ^ T3[(int)(aa >> 32) & 0xff] ^ T4[(int)(aa >> 48) & 0xff];
		cc += T4[(int)(aa >>  8) & 0xff] ^ T3[(int)(aa >> 24) & 0xff]
			 ^ T2[(int)(aa >> 40) & 0xff] ^ T1[(int)(aa >> 56) & 0xff];
		cc *= 7;
		bb ^= x3;
		cc -= T1[(int) bb & 0xff] ^ T2[(int)(bb >> 16) & 0xff]
			 ^ T3[(int)(bb >> 32) & 0xff] ^ T4[(int)(bb >> 48) & 0xff];
		aa += T4[(int)(bb >>  8) & 0xff] ^ T3[(int)(bb >> 24) & 0xff]
			 ^ T2[(int)(bb >> 40) & 0xff] ^ T1[(int)(bb >> 56) & 0xff];
		aa *= 7;
		cc ^= x4;
		aa -= T1[(int) cc & 0xff] ^ T2[(int)(cc >> 16) & 0xff]
			 ^ T3[(int)(cc >> 32) & 0xff] ^ T4[(int)(cc >> 48) & 0xff];
		bb += T4[(int)(cc >>  8) & 0xff] ^ T3[(int)(cc >> 24) & 0xff]
			 ^ T2[(int)(cc >> 40) & 0xff] ^ T1[(int)(cc >> 56) & 0xff];
		bb *= 7;
		aa ^= x5;
		bb -= T1[(int) aa & 0xff] ^ T2[(int)(aa >> 16) & 0xff]
			 ^ T3[(int)(aa >> 32) & 0xff] ^ T4[(int)(aa >> 48) & 0xff];
		cc += T4[(int)(aa >>  8) & 0xff] ^ T3[(int)(aa >> 24) & 0xff]
			 ^ T2[(int)(aa >> 40) & 0xff] ^ T1[(int)(aa >> 56) & 0xff];
		cc *= 7;
		bb ^= x6;
		cc -= T1[(int) bb & 0xff] ^ T2[(int)(bb >> 16) & 0xff]
			 ^ T3[(int)(bb >> 32) & 0xff] ^ T4[(int)(bb >> 48) & 0xff];
		aa += T4[(int)(bb >>  8) & 0xff] ^ T3[(int)(bb >> 24) & 0xff]
			 ^ T2[(int)(bb >> 40) & 0xff] ^ T1[(int)(bb >> 56) & 0xff];
		aa *= 7;
		cc ^= x7;
		aa -= T1[(int) cc & 0xff] ^ T2[(int)(cc >> 16) & 0xff]
			 ^ T3[(int)(cc >> 32) & 0xff] ^ T4[(int)(cc >> 48) & 0xff];
		bb += T4[(int)(cc >>  8) & 0xff] ^ T3[(int)(cc >> 24) & 0xff]
			 ^ T2[(int)(cc >> 40) & 0xff] ^ T1[(int)(cc >> 56) & 0xff];
		bb *= 7;

		// key_schedule ::=
		x0 -= x7 ^ 0xA5A5A5A5A5A5A5A5L;
		x1 ^= x0;
		x2 += x1;
		x3 -= x2 ^ ((~x1) << 19);
		x4 ^= x3;
		x5 += x4;
		x6 -= x5 ^ ((~x4) >>> 23);
		x7 ^= x6;
		x0 += x7;
		x1 -= x0 ^ ((~x7) << 19);
		x2 ^= x1;
		x3 += x2;
		x4 -= x3 ^ ((~x2) >>> 23);
		x5 ^= x4;
		x6 += x5;
		x7 -= x6 ^ 0x0123456789ABCDEFL;

		// pass(bb,cc,aa,9) ::=
		aa ^= x0;
		bb -= T1[(int) aa & 0xff] ^ T2[(int)(aa >> 16) & 0xff]
			 ^ T3[(int)(aa >> 32) & 0xff] ^ T4[(int)(aa >> 48) & 0xff];
		cc += T4[(int)(aa >>  8) & 0xff] ^ T3[(int)(aa >> 24) & 0xff]
			 ^ T2[(int)(aa >> 40) & 0xff] ^ T1[(int)(aa >> 56) & 0xff];
		cc *= 9;
		bb ^= x1;
		cc -= T1[(int) bb & 0xff] ^ T2[(int)(bb >> 16) & 0xff]
			 ^ T3[(int)(bb >> 32) & 0xff] ^ T4[(int)(bb >> 48) & 0xff];
		aa += T4[(int)(bb >>  8) & 0xff] ^ T3[(int)(bb >> 24) & 0xff]
			 ^ T2[(int)(bb >> 40) & 0xff] ^ T1[(int)(bb >> 56) & 0xff];
		aa *= 9;
		cc ^= x2;
		aa -= T1[(int) cc & 0xff] ^ T2[(int)(cc >> 16) & 0xff]
			 ^ T3[(int)(cc >> 32) & 0xff] ^ T4[(int)(cc >> 48) & 0xff];
		bb += T4[(int)(cc >>  8) & 0xff] ^ T3[(int)(cc >> 24) & 0xff]
			 ^ T2[(int)(cc >> 40) & 0xff] ^ T1[(int)(cc >> 56) & 0xff];
		bb *= 9;
		aa ^= x3;
		bb -= T1[(int) aa & 0xff] ^ T2[(int)(aa >> 16) & 0xff]
			 ^ T3[(int)(aa >> 32) & 0xff] ^ T4[(int)(aa >> 48) & 0xff];
		cc += T4[(int)(aa >>  8) & 0xff] ^ T3[(int)(aa >> 24) & 0xff]
			 ^ T2[(int)(aa >> 40) & 0xff] ^ T1[(int)(aa >> 56) & 0xff];
		cc *= 9;
		bb ^= x4;
		cc -= T1[(int) bb & 0xff] ^ T2[(int)(bb >> 16) & 0xff]
			 ^ T3[(int)(bb >> 32) & 0xff] ^ T4[(int)(bb >> 48) & 0xff];
		aa += T4[(int)(bb >>  8) & 0xff] ^ T3[(int)(bb >> 24) & 0xff]
			 ^ T2[(int)(bb >> 40) & 0xff] ^ T1[(int)(bb >> 56) & 0xff];
		aa *= 9;
		cc ^= x5;
		aa -= T1[(int) cc & 0xff] ^ T2[(int)(cc >> 16) & 0xff]
			 ^ T3[(int)(cc >> 32) & 0xff] ^ T4[(int)(cc >> 48) & 0xff];
		bb += T4[(int)(cc >>  8) & 0xff] ^ T3[(int)(cc >> 24) & 0xff]
			 ^ T2[(int)(cc >> 40) & 0xff] ^ T1[(int)(cc >> 56) & 0xff];
		bb *= 9;
		aa ^= x6;
		bb -= T1[(int) aa & 0xff] ^ T2[(int)(aa >> 16) & 0xff]
			 ^ T3[(int)(aa >> 32) & 0xff] ^ T4[(int)(aa >> 48) & 0xff];
		cc += T4[(int)(aa >>  8) & 0xff] ^ T3[(int)(aa >> 24) & 0xff]
			 ^ T2[(int)(aa >> 40) & 0xff] ^ T1[(int)(aa >> 56) & 0xff];
		cc *= 9;
		bb ^= x7;
		cc -= T1[(int) bb & 0xff] ^ T2[(int)(bb >> 16) & 0xff]
			 ^ T3[(int)(bb >> 32) & 0xff] ^ T4[(int)(bb >> 48) & 0xff];
		aa += T4[(int)(bb >>  8) & 0xff] ^ T3[(int)(bb >> 24) & 0xff]
			 ^ T2[(int)(bb >> 40) & 0xff] ^ T1[(int)(bb >> 56) & 0xff];
		aa *= 9;

		// feedforward ::=
		a ^= aa;
		b  = bb - b;
		c += cc;
	}
	protected static final int HASH_SIZE = 24;

	protected static final int BLOCK_SIZE = 64;

	/** Result when no data has been input. */

	private static final long A = 0x0123456789ABCDEFL;
	private static final long B = 0xFEDCBA9876543210L;
	private static final long C = 0xF096A5B4C3B2E187L;

	/** S-Box T1. */
	private static final long[] T1 = {
		0x02AAB17CF7E90C5EL, 0xAC424B03E243A8ECL, 0x72CD5BE30DD5FCD3L, 0x6D019B93F6F97F3AL,
		0xCD9978FFD21F9193L, 0x7573A1C9708029E2L, 0xB164326B922A83C3L, 0x46883EEE04915870L,
		0xEAACE3057103ECE6L, 0xC54169B808A3535CL, 0x4CE754918DDEC47CL, 0x0AA2F4DFDC0DF40CL,
		0x10B76F18A74DBEFAL, 0xC6CCB6235AD1AB6AL, 0x13726121572FE2FFL, 0x1A488C6F199D921EL,
		0x4BC9F9F4DA0007CAL, 0x26F5E6F6E85241C7L, 0x859079DBEA5947B6L, 0x4F1885C5C99E8C92L,
		0xD78E761EA96F864BL, 0x8E36428C52B5C17DL, 0x69CF6827373063C1L, 0xB607C93D9BB4C56EL,
		0x7D820E760E76B5EAL, 0x645C9CC6F07FDC42L, 0xBF38A078243342E0L, 0x5F6B343C9D2E7D04L,
		0xF2C28AEB600B0EC6L, 0x6C0ED85F7254BCACL, 0x71592281A4DB4FE5L, 0x1967FA69CE0FED9FL,
		0xFD5293F8B96545DBL, 0xC879E9D7F2A7600BL, 0x860248920193194EL, 0xA4F9533B2D9CC0B3L,
		0x9053836C15957613L, 0xDB6DCF8AFC357BF1L, 0x18BEEA7A7A370F57L, 0x037117CA50B99066L,
		0x6AB30A9774424A35L, 0xF4E92F02E325249BL, 0x7739DB07061CCAE1L, 0xD8F3B49CECA42A05L,
		0xBD56BE3F51382F73L, 0x45FAED5843B0BB28L, 0x1C813D5C11BF1F83L, 0x8AF0E4B6D75FA169L,
		0x33EE18A487AD9999L, 0x3C26E8EAB1C94410L, 0xB510102BC0A822F9L, 0x141EEF310CE6123BL,
		0xFC65B90059DDB154L, 0xE0158640C5E0E607L, 0x884E079826C3A3CFL, 0x930D0D9523C535FDL,
		0x35638D754E9A2B00L, 0x4085FCCF40469DD5L, 0xC4B17AD28BE23A4CL, 0xCAB2F0FC6A3E6A2EL,
		0x2860971A6B943FCDL, 0x3DDE6EE212E30446L, 0x6222F32AE01765AEL, 0x5D550BB5478308FEL,
		0xA9EFA98DA0EDA22AL, 0xC351A71686C40DA7L, 0x1105586D9C867C84L, 0xDCFFEE85FDA22853L,
		0xCCFBD0262C5EEF76L, 0xBAF294CB8990D201L, 0xE69464F52AFAD975L, 0x94B013AFDF133E14L,
		0x06A7D1A32823C958L, 0x6F95FE5130F61119L, 0xD92AB34E462C06C0L, 0xED7BDE33887C71D2L,
		0x79746D6E6518393EL, 0x5BA419385D713329L, 0x7C1BA6B948A97564L, 0x31987C197BFDAC67L,
		0xDE6C23C44B053D02L, 0x581C49FED002D64DL, 0xDD474D6338261571L, 0xAA4546C3E473D062L,
		0x928FCE349455F860L, 0x48161BBACAAB94D9L, 0x63912430770E6F68L, 0x6EC8A5E602C6641CL,
		0x87282515337DDD2BL, 0x2CDA6B42034B701BL, 0xB03D37C181CB096DL, 0xE108438266C71C6FL,
		0x2B3180C7EB51B255L, 0xDF92B82F96C08BBCL, 0x5C68C8C0A632F3BAL, 0x5504CC861C3D0556L,
		0xABBFA4E55FB26B8FL, 0x41848B0AB3BACEB4L, 0xB334A273AA445D32L, 0xBCA696F0A85AD881L,
		0x24F6EC65B528D56CL, 0x0CE1512E90F4524AL, 0x4E9DD79D5506D35AL, 0x258905FAC6CE9779L,
		0x2019295B3E109B33L, 0xF8A9478B73A054CCL, 0x2924F2F934417EB0L, 0x3993357D536D1BC4L,
		0x38A81AC21DB6FF8BL, 0x47C4FBF17D6016BFL, 0x1E0FAADD7667E3F5L, 0x7ABCFF62938BEB96L,
		0xA78DAD948FC179C9L, 0x8F1F98B72911E50DL, 0x61E48EAE27121A91L, 0x4D62F7AD31859808L,
		0xECEBA345EF5CEAEBL, 0xF5CEB25EBC9684CEL, 0xF633E20CB7F76221L, 0xA32CDF06AB8293E4L,
		0x985A202CA5EE2CA4L, 0xCF0B8447CC8A8FB1L, 0x9F765244979859A3L, 0xA8D516B1A1240017L,
		0x0BD7BA3EBB5DC726L, 0xE54BCA55B86ADB39L, 0x1D7A3AFD6C478063L, 0x519EC608E7669EDDL,
		0x0E5715A2D149AA23L, 0x177D4571848FF194L, 0xEEB55F3241014C22L, 0x0F5E5CA13A6E2EC2L,
		0x8029927B75F5C361L, 0xAD139FABC3D6E436L, 0x0D5DF1A94CCF402FL, 0x3E8BD948BEA5DFC8L,
		0xA5A0D357BD3FF77EL, 0xA2D12E251F74F645L, 0x66FD9E525E81A082L, 0x2E0C90CE7F687A49L,
		0xC2E8BCBEBA973BC5L, 0x000001BCE509745FL, 0x423777BBE6DAB3D6L, 0xD1661C7EAEF06EB5L,
		0xA1781F354DAACFD8L, 0x2D11284A2B16AFFCL, 0xF1FC4F67FA891D1FL, 0x73ECC25DCB920ADAL,
		0xAE610C22C2A12651L, 0x96E0A810D356B78AL, 0x5A9A381F2FE7870FL, 0xD5AD62EDE94E5530L,
		0xD225E5E8368D1427L, 0x65977B70C7AF4631L, 0x99F889B2DE39D74FL, 0x233F30BF54E1D143L,
		0x9A9675D3D9A63C97L, 0x5470554FF334F9A8L, 0x166ACB744A4F5688L, 0x70C74CAAB2E4AEADL,
		0xF0D091646F294D12L, 0x57B82A89684031D1L, 0xEFD95A5A61BE0B6BL, 0x2FBD12E969F2F29AL,
		0x9BD37013FEFF9FE8L, 0x3F9B0404D6085A06L, 0x4940C1F3166CFE15L, 0x09542C4DCDF3DEFBL,
		0xB4C5218385CD5CE3L, 0xC935B7DC4462A641L, 0x3417F8A68ED3B63FL, 0xB80959295B215B40L,
		0xF99CDAEF3B8C8572L, 0x018C0614F8FCB95DL, 0x1B14ACCD1A3ACDF3L, 0x84D471F200BB732DL,
		0xC1A3110E95E8DA16L, 0x430A7220BF1A82B8L, 0xB77E090D39DF210EL, 0x5EF4BD9F3CD05E9DL,
		0x9D4FF6DA7E57A444L, 0xDA1D60E183D4A5F8L, 0xB287C38417998E47L, 0xFE3EDC121BB31886L,
		0xC7FE3CCC980CCBEFL, 0xE46FB590189BFD03L, 0x3732FD469A4C57DCL, 0x7EF700A07CF1AD65L,
		0x59C64468A31D8859L, 0x762FB0B4D45B61F6L, 0x155BAED099047718L, 0x68755E4C3D50BAA6L,
		0xE9214E7F22D8B4DFL, 0x2ADDBF532EAC95F4L, 0x32AE3909B4BD0109L, 0x834DF537B08E3450L,
		0xFA209DA84220728DL, 0x9E691D9B9EFE23F7L, 0x0446D288C4AE8D7FL, 0x7B4CC524E169785BL,
		0x21D87F0135CA1385L, 0xCEBB400F137B8AA5L, 0x272E2B66580796BEL, 0x3612264125C2B0DEL,
		0x057702BDAD1EFBB2L, 0xD4BABB8EACF84BE9L, 0x91583139641BC67BL, 0x8BDC2DE08036E024L,
		0x603C8156F49F68EDL, 0xF7D236F7DBEF5111L, 0x9727C4598AD21E80L, 0xA08A0896670A5FD7L,
		0xCB4A8F4309EBA9CBL, 0x81AF564B0F7036A1L, 0xC0B99AA778199ABDL, 0x959F1EC83FC8E952L,
		0x8C505077794A81B9L, 0x3ACAAF8F056338F0L, 0x07B43F50627A6778L, 0x4A44AB49F5ECCC77L,
		0x3BC3D6E4B679EE98L, 0x9CC0D4D1CF14108CL, 0x4406C00B206BC8A0L, 0x82A18854C8D72D89L,
		0x67E366B35C3C432CL, 0xB923DD61102B37F2L, 0x56AB2779D884271DL, 0xBE83E1B0FF1525AFL,
		0xFB7C65D4217E49A9L, 0x6BDBE0E76D48E7D4L, 0x08DF828745D9179EL, 0x22EA6A9ADD53BD34L,
		0xE36E141C5622200AL, 0x7F805D1B8CB750EEL, 0xAFE5C7A59F58E837L, 0xE27F996A4FB1C23CL,
		0xD3867DFB0775F0D0L, 0xD0E673DE6E88891AL, 0x123AEB9EAFB86C25L, 0x30F1D5D5C145B895L,
		0xBB434A2DEE7269E7L, 0x78CB67ECF931FA38L, 0xF33B0372323BBF9CL, 0x52D66336FB279C74L,
		0x505F33AC0AFB4EAAL, 0xE8A5CD99A2CCE187L, 0x534974801E2D30BBL, 0x8D2D5711D5876D90L,
		0x1F1A412891BC038EL, 0xD6E2E71D82E56648L, 0x74036C3A497732B7L, 0x89B67ED96361F5ABL,
		0xFFED95D8F1EA02A2L, 0xE72B3BD61464D43DL, 0xA6300F170BDC4820L, 0xEBC18760ED78A77AL
	};

	/** S-Box T2. */
	private static final long[] T2 = {
		0xE6A6BE5A05A12138L, 0xB5A122A5B4F87C98L, 0x563C6089140B6990L, 0x4C46CB2E391F5DD5L,
		0xD932ADDBC9B79434L, 0x08EA70E42015AFF5L, 0xD765A6673E478CF1L, 0xC4FB757EAB278D99L,
		0xDF11C6862D6E0692L, 0xDDEB84F10D7F3B16L, 0x6F2EF604A665EA04L, 0x4A8E0F0FF0E0DFB3L,
		0xA5EDEEF83DBCBA51L, 0xFC4F0A2A0EA4371EL, 0xE83E1DA85CB38429L, 0xDC8FF882BA1B1CE2L,
		0xCD45505E8353E80DL, 0x18D19A00D4DB0717L, 0x34A0CFEDA5F38101L, 0x0BE77E518887CAF2L,
		0x1E341438B3C45136L, 0xE05797F49089CCF9L, 0xFFD23F9DF2591D14L, 0x543DDA228595C5CDL,
		0x661F81FD99052A33L, 0x8736E641DB0F7B76L, 0x15227725418E5307L, 0xE25F7F46162EB2FAL,
		0x48A8B2126C13D9FEL, 0xAFDC541792E76EEAL, 0x03D912BFC6D1898FL, 0x31B1AAFA1B83F51BL,
		0xF1AC2796E42AB7D9L, 0x40A3A7D7FCD2EBACL, 0x1056136D0AFBBCC5L, 0x7889E1DD9A6D0C85L,
		0xD33525782A7974AAL, 0xA7E25D09078AC09BL, 0xBD4138B3EAC6EDD0L, 0x920ABFBE71EB9E70L,
		0xA2A5D0F54FC2625CL, 0xC054E36B0B1290A3L, 0xF6DD59FF62FE932BL, 0x3537354511A8AC7DL,
		0xCA845E9172FADCD4L, 0x84F82B60329D20DCL, 0x79C62CE1CD672F18L, 0x8B09A2ADD124642CL,
		0xD0C1E96A19D9E726L, 0x5A786A9B4BA9500CL, 0x0E020336634C43F3L, 0xC17B474AEB66D822L,
		0x6A731AE3EC9BAAC2L, 0x8226667AE0840258L, 0x67D4567691CAECA5L, 0x1D94155C4875ADB5L,
		0x6D00FD985B813FDFL, 0x51286EFCB774CD06L, 0x5E8834471FA744AFL, 0xF72CA0AEE761AE2EL,
		0xBE40E4CDAEE8E09AL, 0xE9970BBB5118F665L, 0x726E4BEB33DF1964L, 0x703B000729199762L,
		0x4631D816F5EF30A7L, 0xB880B5B51504A6BEL, 0x641793C37ED84B6CL, 0x7B21ED77F6E97D96L,
		0x776306312EF96B73L, 0xAE528948E86FF3F4L, 0x53DBD7F286A3F8F8L, 0x16CADCE74CFC1063L,
		0x005C19BDFA52C6DDL, 0x68868F5D64D46AD3L, 0x3A9D512CCF1E186AL, 0x367E62C2385660AEL,
		0xE359E7EA77DCB1D7L, 0x526C0773749ABE6EL, 0x735AE5F9D09F734BL, 0x493FC7CC8A558BA8L,
		0xB0B9C1533041AB45L, 0x321958BA470A59BDL, 0x852DB00B5F46C393L, 0x91209B2BD336B0E5L,
		0x6E604F7D659EF19FL, 0xB99A8AE2782CCB24L, 0xCCF52AB6C814C4C7L, 0x4727D9AFBE11727BL,
		0x7E950D0C0121B34DL, 0x756F435670AD471FL, 0xF5ADD442615A6849L, 0x4E87E09980B9957AL,
		0x2ACFA1DF50AEE355L, 0xD898263AFD2FD556L, 0xC8F4924DD80C8FD6L, 0xCF99CA3D754A173AL,
		0xFE477BACAF91BF3CL, 0xED5371F6D690C12DL, 0x831A5C285E687094L, 0xC5D3C90A3708A0A4L,
		0x0F7F903717D06580L, 0x19F9BB13B8FDF27FL, 0xB1BD6F1B4D502843L, 0x1C761BA38FFF4012L,
		0x0D1530C4E2E21F3BL, 0x8943CE69A7372C8AL, 0xE5184E11FEB5CE66L, 0x618BDB80BD736621L,
		0x7D29BAD68B574D0BL, 0x81BB613E25E6FE5BL, 0x071C9C10BC07913FL, 0xC7BEEB7909AC2D97L,
		0xC3E58D353BC5D757L, 0xEB017892F38F61E8L, 0xD4EFFB9C9B1CC21AL, 0x99727D26F494F7ABL,
		0xA3E063A2956B3E03L, 0x9D4A8B9A4AA09C30L, 0x3F6AB7D500090FB4L, 0x9CC0F2A057268AC0L,
		0x3DEE9D2DEDBF42D1L, 0x330F49C87960A972L, 0xC6B2720287421B41L, 0x0AC59EC07C00369CL,
		0xEF4EAC49CB353425L, 0xF450244EEF0129D8L, 0x8ACC46E5CAF4DEB6L, 0x2FFEAB63989263F7L,
		0x8F7CB9FE5D7A4578L, 0x5BD8F7644E634635L, 0x427A7315BF2DC900L, 0x17D0C4AA2125261CL,
		0x3992486C93518E50L, 0xB4CBFEE0A2D7D4C3L, 0x7C75D6202C5DDD8DL, 0xDBC295D8E35B6C61L,
		0x60B369D302032B19L, 0xCE42685FDCE44132L, 0x06F3DDB9DDF65610L, 0x8EA4D21DB5E148F0L,
		0x20B0FCE62FCD496FL, 0x2C1B912358B0EE31L, 0xB28317B818F5A308L, 0xA89C1E189CA6D2CFL,
		0x0C6B18576AAADBC8L, 0xB65DEAA91299FAE3L, 0xFB2B794B7F1027E7L, 0x04E4317F443B5BEBL,
		0x4B852D325939D0A6L, 0xD5AE6BEEFB207FFCL, 0x309682B281C7D374L, 0xBAE309A194C3B475L,
		0x8CC3F97B13B49F05L, 0x98A9422FF8293967L, 0x244B16B01076FF7CL, 0xF8BF571C663D67EEL,
		0x1F0D6758EEE30DA1L, 0xC9B611D97ADEB9B7L, 0xB7AFD5887B6C57A2L, 0x6290AE846B984FE1L,
		0x94DF4CDEACC1A5FDL, 0x058A5BD1C5483AFFL, 0x63166CC142BA3C37L, 0x8DB8526EB2F76F40L,
		0xE10880036F0D6D4EL, 0x9E0523C9971D311DL, 0x45EC2824CC7CD691L, 0x575B8359E62382C9L,
		0xFA9E400DC4889995L, 0xD1823ECB45721568L, 0xDAFD983B8206082FL, 0xAA7D29082386A8CBL,
		0x269FCD4403B87588L, 0x1B91F5F728BDD1E0L, 0xE4669F39040201F6L, 0x7A1D7C218CF04ADEL,
		0x65623C29D79CE5CEL, 0x2368449096C00BB1L, 0xAB9BF1879DA503BAL, 0xBC23ECB1A458058EL,
		0x9A58DF01BB401ECCL, 0xA070E868A85F143DL, 0x4FF188307DF2239EL, 0x14D565B41A641183L,
		0xEE13337452701602L, 0x950E3DCF3F285E09L, 0x59930254B9C80953L, 0x3BF299408930DA6DL,
		0xA955943F53691387L, 0xA15EDECAA9CB8784L, 0x29142127352BE9A0L, 0x76F0371FFF4E7AFBL,
		0x0239F450274F2228L, 0xBB073AF01D5E868BL, 0xBFC80571C10E96C1L, 0xD267088568222E23L,
		0x9671A3D48E80B5B0L, 0x55B5D38AE193BB81L, 0x693AE2D0A18B04B8L, 0x5C48B4ECADD5335FL,
		0xFD743B194916A1CAL, 0x2577018134BE98C4L, 0xE77987E83C54A4ADL, 0x28E11014DA33E1B9L,
		0x270CC59E226AA213L, 0x71495F756D1A5F60L, 0x9BE853FB60AFEF77L, 0xADC786A7F7443DBFL,
		0x0904456173B29A82L, 0x58BC7A66C232BD5EL, 0xF306558C673AC8B2L, 0x41F639C6B6C9772AL,
		0x216DEFE99FDA35DAL, 0x11640CC71C7BE615L, 0x93C43694565C5527L, 0xEA038E6246777839L,
		0xF9ABF3CE5A3E2469L, 0x741E768D0FD312D2L, 0x0144B883CED652C6L, 0xC20B5A5BA33F8552L,
		0x1AE69633C3435A9DL, 0x97A28CA4088CFDECL, 0x8824A43C1E96F420L, 0x37612FA66EEEA746L,
		0x6B4CB165F9CF0E5AL, 0x43AA1C06A0ABFB4AL, 0x7F4DC26FF162796BL, 0x6CBACC8E54ED9B0FL,
		0xA6B7FFEFD2BB253EL, 0x2E25BC95B0A29D4FL, 0x86D6A58BDEF1388CL, 0xDED74AC576B6F054L,
		0x8030BDBC2B45805DL, 0x3C81AF70E94D9289L, 0x3EFF6DDA9E3100DBL, 0xB38DC39FDFCC8847L,
		0x123885528D17B87EL, 0xF2DA0ED240B1B642L, 0x44CEFADCD54BF9A9L, 0x1312200E433C7EE6L,
		0x9FFCC84F3A78C748L, 0xF0CD1F72248576BBL, 0xEC6974053638CFE4L, 0x2BA7B67C0CEC4E4CL,
		0xAC2F4DF3E5CE32EDL, 0xCB33D14326EA4C11L, 0xA4E9044CC77E58BCL, 0x5F513293D934FCEFL,
		0x5DC9645506E55444L, 0x50DE418F317DE40AL, 0x388CB31A69DDE259L, 0x2DB4A83455820A86L,
		0x9010A91E84711AE9L, 0x4DF7F0B7B1498371L, 0xD62A2EABC0977179L, 0x22FAC097AA8D5C0EL
	};

	/** S-Box T3. */
	private static final long[] T3 = {
		0xF49FCC2FF1DAF39BL, 0x487FD5C66FF29281L, 0xE8A30667FCDCA83FL, 0x2C9B4BE3D2FCCE63L,
		0xDA3FF74B93FBBBC2L, 0x2FA165D2FE70BA66L, 0xA103E279970E93D4L, 0xBECDEC77B0E45E71L,
		0xCFB41E723985E497L, 0xB70AAA025EF75017L, 0xD42309F03840B8E0L, 0x8EFC1AD035898579L,
		0x96C6920BE2B2ABC5L, 0x66AF4163375A9172L, 0x2174ABDCCA7127FBL, 0xB33CCEA64A72FF41L,
		0xF04A4933083066A5L, 0x8D970ACDD7289AF5L, 0x8F96E8E031C8C25EL, 0xF3FEC02276875D47L,
		0xEC7BF310056190DDL, 0xF5ADB0AEBB0F1491L, 0x9B50F8850FD58892L, 0x4975488358B74DE8L,
		0xA3354FF691531C61L, 0x0702BBE481D2C6EEL, 0x89FB24057DEDED98L, 0xAC3075138596E902L,
		0x1D2D3580172772EDL, 0xEB738FC28E6BC30DL, 0x5854EF8F63044326L, 0x9E5C52325ADD3BBEL,
		0x90AA53CF325C4623L, 0xC1D24D51349DD067L, 0x2051CFEEA69EA624L, 0x13220F0A862E7E4FL,
		0xCE39399404E04864L, 0xD9C42CA47086FCB7L, 0x685AD2238A03E7CCL, 0x066484B2AB2FF1DBL,
		0xFE9D5D70EFBF79ECL, 0x5B13B9DD9C481854L, 0x15F0D475ED1509ADL, 0x0BEBCD060EC79851L,
		0xD58C6791183AB7F8L, 0xD1187C5052F3EEE4L, 0xC95D1192E54E82FFL, 0x86EEA14CB9AC6CA2L,
		0x3485BEB153677D5DL, 0xDD191D781F8C492AL, 0xF60866BAA784EBF9L, 0x518F643BA2D08C74L,
		0x8852E956E1087C22L, 0xA768CB8DC410AE8DL, 0x38047726BFEC8E1AL, 0xA67738B4CD3B45AAL,
		0xAD16691CEC0DDE19L, 0xC6D4319380462E07L, 0xC5A5876D0BA61938L, 0x16B9FA1FA58FD840L,
		0x188AB1173CA74F18L, 0xABDA2F98C99C021FL, 0x3E0580AB134AE816L, 0x5F3B05B773645ABBL,
		0x2501A2BE5575F2F6L, 0x1B2F74004E7E8BA9L, 0x1CD7580371E8D953L, 0x7F6ED89562764E30L,
		0xB15926FF596F003DL, 0x9F65293DA8C5D6B9L, 0x6ECEF04DD690F84CL, 0x4782275FFF33AF88L,
		0xE41433083F820801L, 0xFD0DFE409A1AF9B5L, 0x4325A3342CDB396BL, 0x8AE77E62B301B252L,
		0xC36F9E9F6655615AL, 0x85455A2D92D32C09L, 0xF2C7DEA949477485L, 0x63CFB4C133A39EBAL,
		0x83B040CC6EBC5462L, 0x3B9454C8FDB326B0L, 0x56F56A9E87FFD78CL, 0x2DC2940D99F42BC6L,
		0x98F7DF096B096E2DL, 0x19A6E01E3AD852BFL, 0x42A99CCBDBD4B40BL, 0xA59998AF45E9C559L,
		0x366295E807D93186L, 0x6B48181BFAA1F773L, 0x1FEC57E2157A0A1DL, 0x4667446AF6201AD5L,
		0xE615EBCACFB0F075L, 0xB8F31F4F68290778L, 0x22713ED6CE22D11EL, 0x3057C1A72EC3C93BL,
		0xCB46ACC37C3F1F2FL, 0xDBB893FD02AAF50EL, 0x331FD92E600B9FCFL, 0xA498F96148EA3AD6L,
		0xA8D8426E8B6A83EAL, 0xA089B274B7735CDCL, 0x87F6B3731E524A11L, 0x118808E5CBC96749L,
		0x9906E4C7B19BD394L, 0xAFED7F7E9B24A20CL, 0x6509EADEEB3644A7L, 0x6C1EF1D3E8EF0EDEL,
		0xB9C97D43E9798FB4L, 0xA2F2D784740C28A3L, 0x7B8496476197566FL, 0x7A5BE3E6B65F069DL,
		0xF96330ED78BE6F10L, 0xEEE60DE77A076A15L, 0x2B4BEE4AA08B9BD0L, 0x6A56A63EC7B8894EL,
		0x02121359BA34FEF4L, 0x4CBF99F8283703FCL, 0x398071350CAF30C8L, 0xD0A77A89F017687AL,
		0xF1C1A9EB9E423569L, 0x8C7976282DEE8199L, 0x5D1737A5DD1F7ABDL, 0x4F53433C09A9FA80L,
		0xFA8B0C53DF7CA1D9L, 0x3FD9DCBC886CCB77L, 0xC040917CA91B4720L, 0x7DD00142F9D1DCDFL,
		0x8476FC1D4F387B58L, 0x23F8E7C5F3316503L, 0x032A2244E7E37339L, 0x5C87A5D750F5A74BL,
		0x082B4CC43698992EL, 0xDF917BECB858F63CL, 0x3270B8FC5BF86DDAL, 0x10AE72BB29B5DD76L,
		0x576AC94E7700362BL, 0x1AD112DAC61EFB8FL, 0x691BC30EC5FAA427L, 0xFF246311CC327143L,
		0x3142368E30E53206L, 0x71380E31E02CA396L, 0x958D5C960AAD76F1L, 0xF8D6F430C16DA536L,
		0xC8FFD13F1BE7E1D2L, 0x7578AE66004DDBE1L, 0x05833F01067BE646L, 0xBB34B5AD3BFE586DL,
		0x095F34C9A12B97F0L, 0x247AB64525D60CA8L, 0xDCDBC6F3017477D1L, 0x4A2E14D4DECAD24DL,
		0xBDB5E6D9BE0A1EEBL, 0x2A7E70F7794301ABL, 0xDEF42D8A270540FDL, 0x01078EC0A34C22C1L,
		0xE5DE511AF4C16387L, 0x7EBB3A52BD9A330AL, 0x77697857AA7D6435L, 0x004E831603AE4C32L,
		0xE7A21020AD78E312L, 0x9D41A70C6AB420F2L, 0x28E06C18EA1141E6L, 0xD2B28CBD984F6B28L,
		0x26B75F6C446E9D83L, 0xBA47568C4D418D7FL, 0xD80BADBFE6183D8EL, 0x0E206D7F5F166044L,
		0xE258A43911CBCA3EL, 0x723A1746B21DC0BCL, 0xC7CAA854F5D7CDD3L, 0x7CAC32883D261D9CL,
		0x7690C26423BA942CL, 0x17E55524478042B8L, 0xE0BE477656A2389FL, 0x4D289B5E67AB2DA0L,
		0x44862B9C8FBBFD31L, 0xB47CC8049D141365L, 0x822C1B362B91C793L, 0x4EB14655FB13DFD8L,
		0x1ECBBA0714E2A97BL, 0x6143459D5CDE5F14L, 0x53A8FBF1D5F0AC89L, 0x97EA04D81C5E5B00L,
		0x622181A8D4FDB3F3L, 0xE9BCD341572A1208L, 0x1411258643CCE58AL, 0x9144C5FEA4C6E0A4L,
		0x0D33D06565CF620FL, 0x54A48D489F219CA1L, 0xC43E5EAC6D63C821L, 0xA9728B3A72770DAFL,
		0xD7934E7B20DF87EFL, 0xE35503B61A3E86E5L, 0xCAE321FBC819D504L, 0x129A50B3AC60BFA6L,
		0xCD5E68EA7E9FB6C3L, 0xB01C90199483B1C7L, 0x3DE93CD5C295376CL, 0xAED52EDF2AB9AD13L,
		0x2E60F512C0A07884L, 0xBC3D86A3E36210C9L, 0x35269D9B163951CEL, 0x0C7D6E2AD0CDB5FAL,
		0x59E86297D87F5733L, 0x298EF221898DB0E7L, 0x55000029D1A5AA7EL, 0x8BC08AE1B5061B45L,
		0xC2C31C2B6C92703AL, 0x94CC596BAF25EF42L, 0x0A1D73DB22540456L, 0x04B6A0F9D9C4179AL,
		0xEFFDAFA2AE3D3C60L, 0xF7C8075BB49496C4L, 0x9CC5C7141D1CD4E3L, 0x78BD1638218E5534L,
		0xB2F11568F850246AL, 0xEDFABCFA9502BC29L, 0x796CE5F2DA23051BL, 0xAAE128B0DC93537CL,
		0x3A493DA0EE4B29AEL, 0xB5DF6B2C416895D7L, 0xFCABBD25122D7F37L, 0x70810B58105DC4B1L,
		0xE10FDD37F7882A90L, 0x524DCAB5518A3F5CL, 0x3C9E85878451255BL, 0x4029828119BD34E2L,
		0x74A05B6F5D3CECCBL, 0xB610021542E13ECAL, 0x0FF979D12F59E2ACL, 0x6037DA27E4F9CC50L,
		0x5E92975A0DF1847DL, 0xD66DE190D3E623FEL, 0x5032D6B87B568048L, 0x9A36B7CE8235216EL,
		0x80272A7A24F64B4AL, 0x93EFED8B8C6916F7L, 0x37DDBFF44CCE1555L, 0x4B95DB5D4B99BD25L,
		0x92D3FDA169812FC0L, 0xFB1A4A9A90660BB6L, 0x730C196946A4B9B2L, 0x81E289AA7F49DA68L,
		0x64669A0F83B1A05FL, 0x27B3FF7D9644F48BL, 0xCC6B615C8DB675B3L, 0x674F20B9BCEBBE95L,
		0x6F31238275655982L, 0x5AE488713E45CF05L, 0xBF619F9954C21157L, 0xEABAC46040A8EAE9L,
		0x454C6FE9F2C0C1CDL, 0x419CF6496412691CL, 0xD3DC3BEF265B0F70L, 0x6D0E60F5C3578A9EL
	};

	/** S-Box T4. */
	private static final long[] T4 = {
		0x5B0E608526323C55L, 0x1A46C1A9FA1B59F5L, 0xA9E245A17C4C8FFAL, 0x65CA5159DB2955D7L,
		0x05DB0A76CE35AFC2L, 0x81EAC77EA9113D45L, 0x528EF88AB6AC0A0DL, 0xA09EA253597BE3FFL,
		0x430DDFB3AC48CD56L, 0xC4B3A67AF45CE46FL, 0x4ECECFD8FBE2D05EL, 0x3EF56F10B39935F0L,
		0x0B22D6829CD619C6L, 0x17FD460A74DF2069L, 0x6CF8CC8E8510ED40L, 0xD6C824BF3A6ECAA7L,
		0x61243D581A817049L, 0x048BACB6BBC163A2L, 0xD9A38AC27D44CC32L, 0x7FDDFF5BAAF410ABL,
		0xAD6D495AA804824BL, 0xE1A6A74F2D8C9F94L, 0xD4F7851235DEE8E3L, 0xFD4B7F886540D893L,
		0x247C20042AA4BFDAL, 0x096EA1C517D1327CL, 0xD56966B4361A6685L, 0x277DA5C31221057DL,
		0x94D59893A43ACFF7L, 0x64F0C51CCDC02281L, 0x3D33BCC4FF6189DBL, 0xE005CB184CE66AF1L,
		0xFF5CCD1D1DB99BEAL, 0xB0B854A7FE42980FL, 0x7BD46A6A718D4B9FL, 0xD10FA8CC22A5FD8CL,
		0xD31484952BE4BD31L, 0xC7FA975FCB243847L, 0x4886ED1E5846C407L, 0x28CDDB791EB70B04L,
		0xC2B00BE2F573417FL, 0x5C9590452180F877L, 0x7A6BDDFFF370EB00L, 0xCE509E38D6D9D6A4L,
		0xEBEB0F00647FA702L, 0x1DCC06CF76606F06L, 0xE4D9F28BA286FF0AL, 0xD85A305DC918C262L,
		0x475B1D8732225F54L, 0x2D4FB51668CCB5FEL, 0xA679B9D9D72BBA20L, 0x53841C0D912D43A5L,
		0x3B7EAA48BF12A4E8L, 0x781E0E47F22F1DDFL, 0xEFF20CE60AB50973L, 0x20D261D19DFFB742L,
		0x16A12B03062A2E39L, 0x1960EB2239650495L, 0x251C16FED50EB8B8L, 0x9AC0C330F826016EL,
		0xED152665953E7671L, 0x02D63194A6369570L, 0x5074F08394B1C987L, 0x70BA598C90B25CE1L,
		0x794A15810B9742F6L, 0x0D5925E9FCAF8C6CL, 0x3067716CD868744EL, 0x910AB077E8D7731BL,
		0x6A61BBDB5AC42F61L, 0x93513EFBF0851567L, 0xF494724B9E83E9D5L, 0xE887E1985C09648DL,
		0x34B1D3C675370CFDL, 0xDC35E433BC0D255DL, 0xD0AAB84234131BE0L, 0x08042A50B48B7EAFL,
		0x9997C4EE44A3AB35L, 0x829A7B49201799D0L, 0x263B8307B7C54441L, 0x752F95F4FD6A6CA6L,
		0x927217402C08C6E5L, 0x2A8AB754A795D9EEL, 0xA442F7552F72943DL, 0x2C31334E19781208L,
		0x4FA98D7CEAEE6291L, 0x55C3862F665DB309L, 0xBD0610175D53B1F3L, 0x46FE6CB840413F27L,
		0x3FE03792DF0CFA59L, 0xCFE700372EB85E8FL, 0xA7BE29E7ADBCE118L, 0xE544EE5CDE8431DDL,
		0x8A781B1B41F1873EL, 0xA5C94C78A0D2F0E7L, 0x39412E2877B60728L, 0xA1265EF3AFC9A62CL,
		0xBCC2770C6A2506C5L, 0x3AB66DD5DCE1CE12L, 0xE65499D04A675B37L, 0x7D8F523481BFD216L,
		0x0F6F64FCEC15F389L, 0x74EFBE618B5B13C8L, 0xACDC82B714273E1DL, 0xDD40BFE003199D17L,
		0x37E99257E7E061F8L, 0xFA52626904775AAAL, 0x8BBBF63A463D56F9L, 0xF0013F1543A26E64L,
		0xA8307E9F879EC898L, 0xCC4C27A4150177CCL, 0x1B432F2CCA1D3348L, 0xDE1D1F8F9F6FA013L,
		0x606602A047A7DDD6L, 0xD237AB64CC1CB2C7L, 0x9B938E7225FCD1D3L, 0xEC4E03708E0FF476L,
		0xFEB2FBDA3D03C12DL, 0xAE0BCED2EE43889AL, 0x22CB8923EBFB4F43L, 0x69360D013CF7396DL,
		0x855E3602D2D4E022L, 0x073805BAD01F784CL, 0x33E17A133852F546L, 0xDF4874058AC7B638L,
		0xBA92B29C678AA14AL, 0x0CE89FC76CFAADCDL, 0x5F9D4E0908339E34L, 0xF1AFE9291F5923B9L,
		0x6E3480F60F4A265FL, 0xEEBF3A2AB29B841CL, 0xE21938A88F91B4ADL, 0x57DFEFF845C6D3C3L,
		0x2F006B0BF62CAAF2L, 0x62F479EF6F75EE78L, 0x11A55AD41C8916A9L, 0xF229D29084FED453L,
		0x42F1C27B16B000E6L, 0x2B1F76749823C074L, 0x4B76ECA3C2745360L, 0x8C98F463B91691BDL,
		0x14BCC93CF1ADE66AL, 0x8885213E6D458397L, 0x8E177DF0274D4711L, 0xB49B73B5503F2951L,
		0x10168168C3F96B6BL, 0x0E3D963B63CAB0AEL, 0x8DFC4B5655A1DB14L, 0xF789F1356E14DE5CL,
		0x683E68AF4E51DAC1L, 0xC9A84F9D8D4B0FD9L, 0x3691E03F52A0F9D1L, 0x5ED86E46E1878E80L,
		0x3C711A0E99D07150L, 0x5A0865B20C4E9310L, 0x56FBFC1FE4F0682EL, 0xEA8D5DE3105EDF9BL,
		0x71ABFDB12379187AL, 0x2EB99DE1BEE77B9CL, 0x21ECC0EA33CF4523L, 0x59A4D7521805C7A1L,
		0x3896F5EB56AE7C72L, 0xAA638F3DB18F75DCL, 0x9F39358DABE9808EL, 0xB7DEFA91C00B72ACL,
		0x6B5541FD62492D92L, 0x6DC6DEE8F92E4D5BL, 0x353F57ABC4BEEA7EL, 0x735769D6DA5690CEL,
		0x0A234AA642391484L, 0xF6F9508028F80D9DL, 0xB8E319A27AB3F215L, 0x31AD9C1151341A4DL,
		0x773C22A57BEF5805L, 0x45C7561A07968633L, 0xF913DA9E249DBE36L, 0xDA652D9B78A64C68L,
		0x4C27A97F3BC334EFL, 0x76621220E66B17F4L, 0x967743899ACD7D0BL, 0xF3EE5BCAE0ED6782L,
		0x409F753600C879FCL, 0x06D09A39B5926DB6L, 0x6F83AEB0317AC588L, 0x01E6CA4A86381F21L,
		0x66FF3462D19F3025L, 0x72207C24DDFD3BFBL, 0x4AF6B6D3E2ECE2EBL, 0x9C994DBEC7EA08DEL,
		0x49ACE597B09A8BC4L, 0xB38C4766CF0797BAL, 0x131B9373C57C2A75L, 0xB1822CCE61931E58L,
		0x9D7555B909BA1C0CL, 0x127FAFDD937D11D2L, 0x29DA3BADC66D92E4L, 0xA2C1D57154C2ECBCL,
		0x58C5134D82F6FE24L, 0x1C3AE3515B62274FL, 0xE907C82E01CB8126L, 0xF8ED091913E37FCBL,
		0x3249D8F9C80046C9L, 0x80CF9BEDE388FB63L, 0x1881539A116CF19EL, 0x5103F3F76BD52457L,
		0x15B7E6F5AE47F7A8L, 0xDBD7C6DED47E9CCFL, 0x44E55C410228BB1AL, 0xB647D4255EDB4E99L,
		0x5D11882BB8AAFC30L, 0xF5098BBB29D3212AL, 0x8FB5EA14E90296B3L, 0x677B942157DD025AL,
		0xFB58E7C0A390ACB5L, 0x89D3674C83BD4A01L, 0x9E2DA4DF4BF3B93BL, 0xFCC41E328CAB4829L,
		0x03F38C96BA582C52L, 0xCAD1BDBD7FD85DB2L, 0xBBB442C16082AE83L, 0xB95FE86BA5DA9AB0L,
		0xB22E04673771A93FL, 0x845358C9493152D8L, 0xBE2A488697B4541EL, 0x95A2DC2DD38E6966L,
		0xC02C11AC923C852BL, 0x2388B1990DF2A87BL, 0x7C8008FA1B4F37BEL, 0x1F70D0C84D54E503L,
		0x5490ADEC7ECE57D4L, 0x002B3C27D9063A3AL, 0x7EAEA3848030A2BFL, 0xC602326DED2003C0L,
		0x83A7287D69A94086L, 0xC57A5FCB30F57A8AL, 0xB56844E479EBE779L, 0xA373B40F05DCBCE9L,
		0xD71A786E88570EE2L, 0x879CBACDBDE8F6A0L, 0x976AD1BCC164A32FL, 0xAB21E25E9666D78BL,
		0x901063AAE5E5C33CL, 0x9818B34448698D90L, 0xE36487AE3E1E8ABBL, 0xAFBDF931893BDCB4L,
		0x6345A0DC5FBBD519L, 0x8628FE269B9465CAL, 0x1E5D01603F9C51ECL, 0x4DE44006A15049B7L,
		0xBF6C70E5F776CBB1L, 0x411218F2EF552BEDL, 0xCB0C0708705A36A3L, 0xE74D14754F986044L,
		0xCD56D9430EA8280EL, 0xC12591D7535F5065L, 0xC83223F1720AEF96L, 0xC3A0396F7363A51FL
	};
	protected static Boolean valid;		// The cached self-test result.
	
	protected long a, b, c;	// The context.

	public Tiger192() {super("tiger192", HASH_SIZE, BLOCK_SIZE);}

	/**
	 * Private copying constructor for cloning.
	 *
	 * @param that The instance being cloned.
	 */
	private Tiger192(Tiger192 that) {
		this();
		this.a = that.a;
		this.b = that.b;
		this.c = that.c;
		this.count = that.count;
		this.buffer = (that.buffer != null) ? (byte[]) that.buffer.clone() : null;
	}

	// Instance methods implementing BaseHash.
	// -----------------------------------------------------------------------

	public Object clone() {
		return new Tiger192(this);
	}
}

//--------------------------------------------------------------------------
//$Id: Tiger.java,v 1.1 2003/03/22 03:09:57 rsdio Exp $
//
//Copyright (C) 2003, Free Software Foundation, Inc.
//
//This file is part of GNU Crypto.
//
//GNU Crypto is free software; you can redistribute it and/or modify
//it under the terms of the GNU General Public License as published by
//the Free Software Foundation; either version 2, or (at your option)
//any later version.
//
//GNU Crypto is distributed in the hope that it will be useful, but
//WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//General Public License for more details.
//
//You should have received a copy of the GNU General Public License
//along with this program; see the file COPYING.  If not, write to the
//
// Free Software Foundation Inc.,
// 59 Temple Place - Suite 330,
// Boston, MA 02111-1307
// USA
//
//Linking this library statically or dynamically with other modules is
//making a combined work based on this library.  Thus, the terms and
//conditions of the GNU General Public License cover the whole
//combination.
//
//As a special exception, the copyright holders of this library give
//you permission to link this library with independent modules to
//produce an executable, regardless of the license terms of these
//independent modules, and to copy and distribute the resulting
//executable under terms of your choice, provided that you also meet,
//for each linked independent module, the terms and conditions of the
//license of that module.  An independent module is a module which is
//not derived from or based on this library.  If you modify this
//library, you may extend this exception to your version of the
//library, but you are not obligated to do so.  If you do not wish to
//do so, delete this exception statement from your version.
//
//--------------------------------------------------------------------------

/**
* The Tiger message digest. Tiger was designed by Ross Anderson and Eli
* Biham, with the goal of producing a secure, fast hash function that
* performs especially well on next-generation 64-bit architectures, but
* is still efficient on 32- and 16-bit architectures.
*
* <p>Tiger processes data in 512-bit blocks and produces a 192-bit
* digest.</p>
*
* <p>References:</p>
* <ol>
* <li><a
* href="http://www.cs.technion.ac.il/~biham/Reports/Tiger/">Tiger: A
* Fast New Hash Function</a>, Ross Anderson and Eli Biham.</a></li>
* </ol>
*
* @version $Revision: 1.1 $
*/
abstract class BaseHash {
	/** The canonical name prefix of the hash. */
	protected String name;

	/** The hash (output) size in bytes. */
	protected int hashSize;

	/** The hash (inner) block size in bytes. */
	protected int blockSize;

	/** Number of bytes processed so far. */
	protected long count;

	/** Temporary input buffer. */
	protected byte[] buffer;

	// Constructor(s)
	// -------------------------------------------------------------------------

	/**
	 * <p>Trivial constructor for use by concrete subclasses.</p>
	 *
	 * @param name the canonical name prefix of this instance.
	 * @param hashSize the block size of the output in bytes.
	 * @param blockSize the block size of the internal transform.
	 */
	protected BaseHash(String name, int hashSize, int blockSize) {
		super();

		this.name = name;
		this.hashSize = hashSize;
		this.blockSize = blockSize;
		this.buffer = new byte[blockSize];

		resetContext();
	}

	// Class methods
	// -------------------------------------------------------------------------

	// Instance methods
	// -------------------------------------------------------------------------

	// IMessageDigest interface implementation ---------------------------------

	public String name() {
		return name;
	}

	public int hashSize() {
		return hashSize;
	}

	public int blockSize() {
		return blockSize;
	}

	public void update(byte b) {
		// compute number of bytes still unhashed; ie. present in buffer
		int i = (int)(count % blockSize);
		count++;
		buffer[i] = b;
		if (i == (blockSize - 1)) {
			transform(buffer, 0);
		}
	}

	public void update(byte[] b, int offset, int len) {
		int n = (int)(count % blockSize);
		count += len;
		int partLen = blockSize - n;
		int i = 0;

		if (len >= partLen) {
			System.arraycopy(b, offset, buffer, n, partLen);
			transform(buffer, 0);
			for (i = partLen; i + blockSize - 1 < len; i+= blockSize) {
				transform(b, offset + i);
			}
			n = 0;
		}

		if (i < len) {
			System.arraycopy(b, offset + i, buffer, n, len - i);
		}
	}

	public byte[] digest() {
		byte[] tail = padBuffer(); // pad remaining bytes in buffer
		update(tail, 0, tail.length); // last transform of a message
		byte[] result = getResult(); // make a result out of context

		reset(); // reset this instance for future re-use

		return result;
	}

	public void reset() { // reset this instance for future re-use
		count = 0L;
		for (int i = 0; i < blockSize; ) {
			buffer[i++] = 0;
		}

		resetContext();
	}

	// methods to be implemented by concrete subclasses ------------------------

	public abstract Object clone();

	/**
	 * <p>Returns the byte array to use as padding before completing a hash
	 * operation.</p>
	 *
	 * @return the bytes to pad the remaining bytes in the buffer before
	 * completing a hash operation.
	 */
	protected abstract byte[] padBuffer();

	/**
	 * <p>Constructs the result from the contents of the current context.</p>
	 *
	 * @return the output of the completed hash operation.
	 */
	protected abstract byte[] getResult();

	/** Resets the instance for future re-use. */
	protected abstract void resetContext();

	/**
	 * <p>The block digest transformation per se.</p>
	 *
	 * @param in the <i>blockSize</i> long block, as an array of bytes to digest.
	 * @param offset the index where the data to digest is located within the
	 * input buffer.
	 */
	protected abstract void transform(byte[] in, int offset);
}

//----------------------------------------------------------------------------
//$Id: BaseHash.java,v 1.8 2002/11/07 17:17:45 raif Exp $
//
//Copyright (C) 2001, 2002, Free Software Foundation, Inc.
//
//This file is part of GNU Crypto.
//
//GNU Crypto is free software; you can redistribute it and/or modify
//it under the terms of the GNU General Public License as published by
//the Free Software Foundation; either version 2, or (at your option)
//any later version.
//
//GNU Crypto is distributed in the hope that it will be useful, but
//WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//General Public License for more details.
//
//You should have received a copy of the GNU General Public License
//along with this program; see the file COPYING.  If not, write to the
//
// Free Software Foundation Inc.,
// 59 Temple Place - Suite 330,
// Boston, MA 02111-1307
// USA
//
//Linking this library statically or dynamically with other modules is
//making a combined work based on this library.  Thus, the terms and
//conditions of the GNU General Public License cover the whole
//combination.
//
//As a special exception, the copyright holders of this library give
//you permission to link this library with independent modules to
//produce an executable, regardless of the license terms of these
//independent modules, and to copy and distribute the resulting
//executable under terms of your choice, provided that you also meet,
//for each linked independent module, the terms and conditions of the
//license of that module.  An independent module is a module which is
//not derived from or based on this library.  If you modify this
//library, you may extend this exception to your version of the
//library, but you are not obligated to do so.  If you do not wish to
//do so, delete this exception statement from your version.
//----------------------------------------------------------------------------
/**
 * <p>A base abstract class to facilitate hash implementations.</p>
 *
 * @version $Revision: 1.8 $
 */
