ripemd128digest.java

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// 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:   RIPEMD128Digest.java

package org.bouncycastle.crypto.digests;


// Referenced classes of package org.bouncycastle.crypto.digests:
//			GeneralDigest

public class RIPEMD128Digest extends GeneralDigest
{

	private static final int DIGEST_LENGTH = 16;
	private int H0;
	private int H1;
	private int H2;
	private int H3;
	private int X[];
	private int xOff;

	public RIPEMD128Digest()
	{
		X = new int[16];
		reset();
	}

	public RIPEMD128Digest(RIPEMD128Digest t)
	{
		super(t);
		X = new int[16];
		H0 = t.H0;
		H1 = t.H1;
		H2 = t.H2;
		H3 = t.H3;
		System.arraycopy(t.X, 0, X, 0, t.X.length);
		xOff = t.xOff;
	}

	public String getAlgorithmName()
	{
		return "RIPEMD128";
	}

	public int getDigestSize()
	{
		return 16;
	}

	protected void processWord(byte in[], int inOff)
	{
		X[xOff++] = in[inOff] & 0xff | (in[inOff + 1] & 0xff) << 8 | (in[inOff + 2] & 0xff) << 16 | (in[inOff + 3] & 0xff) << 24;
		if (xOff == 16)
			processBlock();
	}

	protected void processLength(long bitLength)
	{
		if (xOff > 14)
			processBlock();
		X[14] = (int)(bitLength & -1L);
		X[15] = (int)(bitLength >>> 32);
	}

	private void unpackWord(int word, byte out[], int outOff)
	{
		out[outOff] = (byte)word;
		out[outOff + 1] = (byte)(word >>> 8);
		out[outOff + 2] = (byte)(word >>> 16);
		out[outOff + 3] = (byte)(word >>> 24);
	}

	public int doFinal(byte out[], int outOff)
	{
		finish();
		unpackWord(H0, out, outOff);
		unpackWord(H1, out, outOff + 4);
		unpackWord(H2, out, outOff + 8);
		unpackWord(H3, out, outOff + 12);
		reset();
		return 16;
	}

	public void reset()
	{
		super.reset();
		H0 = 0x67452301;
		H1 = 0xefcdab89;
		H2 = 0x98badcfe;
		H3 = 0x10325476;
		xOff = 0;
		for (int i = 0; i != X.length; i++)
			X[i] = 0;

	}

	private final int RL(int x, int n)
	{
		return x << n | x >>> 32 - n;
	}

	private final int f1(int x, int y, int z)
	{
		return x ^ y ^ z;
	}

	private final int f2(int x, int y, int z)
	{
		return x & y | ~x & z;
	}

	private final int f3(int x, int y, int z)
	{
		return (x | ~y) ^ z;
	}

	private final int f4(int x, int y, int z)
	{
		return x & z | y & ~z;
	}

	private final int F1(int a, int b, int c, int d, int x, int s)
	{
		return RL(a + f1(b, c, d) + x, s);
	}

	private final int F2(int a, int b, int c, int d, int x, int s)
	{
		return RL(a + f2(b, c, d) + x + 0x5a827999, s);
	}

	private final int F3(int a, int b, int c, int d, int x, int s)
	{
		return RL(a + f3(b, c, d) + x + 0x6ed9eba1, s);
	}

	private final int F4(int a, int b, int c, int d, int x, int s)
	{
		return RL(a + f4(b, c, d) + x + 0x8f1bbcdc, s);
	}

	private final int FF1(int a, int b, int c, int d, int x, int s)
	{
		return RL(a + f1(b, c, d) + x, s);
	}

	private final int FF2(int a, int b, int c, int d, int x, int s)
	{
		return RL(a + f2(b, c, d) + x + 0x6d703ef3, s);
	}

	private final int FF3(int a, int b, int c, int d, int x, int s)
	{
		return RL(a + f3(b, c, d) + x + 0x5c4dd124, s);
	}

	private final int FF4(int a, int b, int c, int d, int x, int s)
	{
		return RL(a + f4(b, c, d) + x + 0x50a28be6, s);
	}

	protected void processBlock()
	{
		int aa;
		int a = aa = H0;
		int bb;
		int b = bb = H1;
		int cc;
		int c = cc = H2;
		int dd;
		int d = dd = H3;
		a = F1(a, b, c, d, X[0], 11);
		d = F1(d, a, b, c, X[1], 14);
		c = F1(c, d, a, b, X[2], 15);
		b = F1(b, c, d, a, X[3], 12);
		a = F1(a, b, c, d, X[4], 5);
		d = F1(d, a, b, c, X[5], 8);
		c = F1(c, d, a, b, X[6], 7);
		b = F1(b, c, d, a, X[7], 9);
		a = F1(a, b, c, d, X[8], 11);
		d = F1(d, a, b, c, X[9], 13);
		c = F1(c, d, a, b, X[10], 14);
		b = F1(b, c, d, a, X[11], 15);
		a = F1(a, b, c, d, X[12], 6);
		d = F1(d, a, b, c, X[13], 7);
		c = F1(c, d, a, b, X[14], 9);
		b = F1(b, c, d, a, X[15], 8);
		a = F2(a, b, c, d, X[7], 7);
		d = F2(d, a, b, c, X[4], 6);
		c = F2(c, d, a, b, X[13], 8);
		b = F2(b, c, d, a, X[1], 13);
		a = F2(a, b, c, d, X[10], 11);
		d = F2(d, a, b, c, X[6], 9);
		c = F2(c, d, a, b, X[15], 7);
		b = F2(b, c, d, a, X[3], 15);
		a = F2(a, b, c, d, X[12], 7);
		d = F2(d, a, b, c, X[0], 12);
		c = F2(c, d, a, b, X[9], 15);
		b = F2(b, c, d, a, X[5], 9);
		a = F2(a, b, c, d, X[2], 11);
		d = F2(d, a, b, c, X[14], 7);
		c = F2(c, d, a, b, X[11], 13);
		b = F2(b, c, d, a, X[8], 12);
		a = F3(a, b, c, d, X[3], 11);
		d = F3(d, a, b, c, X[10], 13);
		c = F3(c, d, a, b, X[14], 6);
		b = F3(b, c, d, a, X[4], 7);
		a = F3(a, b, c, d, X[9], 14);
		d = F3(d, a, b, c, X[15], 9);
		c = F3(c, d, a, b, X[8], 13);
		b = F3(b, c, d, a, X[1], 15);
		a = F3(a, b, c, d, X[2], 14);
		d = F3(d, a, b, c, X[7], 8);
		c = F3(c, d, a, b, X[0], 13);
		b = F3(b, c, d, a, X[6], 6);
		a = F3(a, b, c, d, X[13], 5);
		d = F3(d, a, b, c, X[11], 12);
		c = F3(c, d, a, b, X[5], 7);
		b = F3(b, c, d, a, X[12], 5);
		a = F4(a, b, c, d, X[1], 11);
		d = F4(d, a, b, c, X[9], 12);
		c = F4(c, d, a, b, X[11], 14);
		b = F4(b, c, d, a, X[10], 15);
		a = F4(a, b, c, d, X[0], 14);
		d = F4(d, a, b, c, X[8], 15);
		c = F4(c, d, a, b, X[12], 9);
		b = F4(b, c, d, a, X[4], 8);
		a = F4(a, b, c, d, X[13], 9);
		d = F4(d, a, b, c, X[3], 14);
		c = F4(c, d, a, b, X[7], 5);
		b = F4(b, c, d, a, X[15], 6);
		a = F4(a, b, c, d, X[14], 8);
		d = F4(d, a, b, c, X[5], 6);
		c = F4(c, d, a, b, X[6], 5);
		b = F4(b, c, d, a, X[2], 12);
		aa = FF4(aa, bb, cc, dd, X[5], 8);
		dd = FF4(dd, aa, bb, cc, X[14], 9);
		cc = FF4(cc, dd, aa, bb, X[7], 9);
		bb = FF4(bb, cc, dd, aa, X[0], 11);
		aa = FF4(aa, bb, cc, dd, X[9], 13);
		dd = FF4(dd, aa, bb, cc, X[2], 15);
		cc = FF4(cc, dd, aa, bb, X[11], 15);
		bb = FF4(bb, cc, dd, aa, X[4], 5);
		aa = FF4(aa, bb, cc, dd, X[13], 7);
		dd = FF4(dd, aa, bb, cc, X[6], 7);
		cc = FF4(cc, dd, aa, bb, X[15], 8);
		bb = FF4(bb, cc, dd, aa, X[8], 11);
		aa = FF4(aa, bb, cc, dd, X[1], 14);
		dd = FF4(dd, aa, bb, cc, X[10], 14);
		cc = FF4(cc, dd, aa, bb, X[3], 12);
		bb = FF4(bb, cc, dd, aa, X[12], 6);
		aa = FF3(aa, bb, cc, dd, X[6], 9);
		dd = FF3(dd, aa, bb, cc, X[11], 13);
		cc = FF3(cc, dd, aa, bb, X[3], 15);
		bb = FF3(bb, cc, dd, aa, X[7], 7);
		aa = FF3(aa, bb, cc, dd, X[0], 12);
		dd = FF3(dd, aa, bb, cc, X[13], 8);
		cc = FF3(cc, dd, aa, bb, X[5], 9);
		bb = FF3(bb, cc, dd, aa, X[10], 11);
		aa = FF3(aa, bb, cc, dd, X[14], 7);
		dd = FF3(dd, aa, bb, cc, X[15], 7);
		cc = FF3(cc, dd, aa, bb, X[8], 12);
		bb = FF3(bb, cc, dd, aa, X[12], 7);
		aa = FF3(aa, bb, cc, dd, X[4], 6);
		dd = FF3(dd, aa, bb, cc, X[9], 15);
		cc = FF3(cc, dd, aa, bb, X[1], 13);
		bb = FF3(bb, cc, dd, aa, X[2], 11);
		aa = FF2(aa, bb, cc, dd, X[15], 9);
		dd = FF2(dd, aa, bb, cc, X[5], 7);
		cc = FF2(cc, dd, aa, bb, X[1], 15);
		bb = FF2(bb, cc, dd, aa, X[3], 11);
		aa = FF2(aa, bb, cc, dd, X[7], 8);
		dd = FF2(dd, aa, bb, cc, X[14], 6);
		cc = FF2(cc, dd, aa, bb, X[6], 6);
		bb = FF2(bb, cc, dd, aa, X[9], 14);
		aa = FF2(aa, bb, cc, dd, X[11], 12);
		dd = FF2(dd, aa, bb, cc, X[8], 13);
		cc = FF2(cc, dd, aa, bb, X[12], 5);
		bb = FF2(bb, cc, dd, aa, X[2], 14);
		aa = FF2(aa, bb, cc, dd, X[10], 13);
		dd = FF2(dd, aa, bb, cc, X[0], 13);
		cc = FF2(cc, dd, aa, bb, X[4], 7);
		bb = FF2(bb, cc, dd, aa, X[13], 5);
		aa = FF1(aa, bb, cc, dd, X[8], 15);
		dd = FF1(dd, aa, bb, cc, X[6], 5);
		cc = FF1(cc, dd, aa, bb, X[4], 8);
		bb = FF1(bb, cc, dd, aa, X[1], 11);
		aa = FF1(aa, bb, cc, dd, X[3], 14);
		dd = FF1(dd, aa, bb, cc, X[11], 14);
		cc = FF1(cc, dd, aa, bb, X[15], 6);
		bb = FF1(bb, cc, dd, aa, X[0], 14);
		aa = FF1(aa, bb, cc, dd, X[5], 6);
		dd = FF1(dd, aa, bb, cc, X[12], 9);
		cc = FF1(cc, dd, aa, bb, X[2], 12);
		bb = FF1(bb, cc, dd, aa, X[13], 9);
		aa = FF1(aa, bb, cc, dd, X[9], 12);
		dd = FF1(dd, aa, bb, cc, X[7], 5);
		cc = FF1(cc, dd, aa, bb, X[10], 15);
		bb = FF1(bb, cc, dd, aa, X[14], 8);
		dd += c + H1;
		H1 = H2 + d + aa;
		H2 = H3 + a + bb;
		H3 = H0 + b + cc;
		H0 = dd;
		xOff = 0;
		for (int i = 0; i != X.length; i++)
			X[i] = 0;

	}
}