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RIPEMD160Digest.javaAPI DocAzureus 3.0.3.414697Tue Jun 08 05:12:58 BST 2004org.bouncycastle.crypto.digests

RIPEMD160Digest

public class RIPEMD160Digest extends GeneralDigest
implementation of RIPEMD see, http://www.esat.kuleuven.ac.be/~bosselae/ripemd160.html

Fields Summary
private static final int
DIGEST_LENGTH
private int
H0
private int
H1
private int
H2
private int
H3
private int
H4
private int[]
X
private int
xOff
Constructors Summary
public RIPEMD160Digest()
Standard constructor


	  	 
	 
	
		reset();
	
public RIPEMD160Digest(RIPEMD160Digest t)
Copy constructor. This will copy the state of the provided message digest.

		super(t);

		H0 = t.H0;
		H1 = t.H1;
		H2 = t.H2;
		H3 = t.H3;
		H4 = t.H4;

		System.arraycopy(t.X, 0, X, 0, t.X.length);
		xOff = t.xOff;
	
Methods Summary
private final intRL(int x, int n)

		return (x << n) | (x >>> (32 - n));
	
public intdoFinal(byte[] out, int outOff)

		finish();

		unpackWord(H0, out, outOff);
		unpackWord(H1, out, outOff + 4);
		unpackWord(H2, out, outOff + 8);
		unpackWord(H3, out, outOff + 12);
		unpackWord(H4, out, outOff + 16);

		reset();

		return DIGEST_LENGTH;
	
private final intf1(int x, int y, int z)

		return x ^ y ^ z;
	
private final intf2(int x, int y, int z)

		return (x & y) | (~x & z);
	
private final intf3(int x, int y, int z)

		return (x | ~y) ^ z;
	
private final intf4(int x, int y, int z)

		return (x & z) | (y & ~z);
	
private final intf5(int x, int y, int z)

		return x ^ (y | ~z);
	
public java.lang.StringgetAlgorithmName()

		return "RIPEMD160";
	
public intgetDigestSize()

		return DIGEST_LENGTH;
	
protected voidprocessBlock()

		int a, aa;
		int b, bb;
		int c, cc;
		int d, dd;
		int e, ee;

		a = aa = H0;
		b = bb = H1;
		c = cc = H2;
		d = dd = H3;
		e = ee = H4;

		//
		// Rounds 1 - 16
		//
		// left
		a = RL(a + f1(b,c,d) + X[ 0], 11) + e; c = RL(c, 10);
		e = RL(e + f1(a,b,c) + X[ 1], 14) + d; b = RL(b, 10);
		d = RL(d + f1(e,a,b) + X[ 2], 15) + c; a = RL(a, 10);
		c = RL(c + f1(d,e,a) + X[ 3], 12) + b; e = RL(e, 10);
		b = RL(b + f1(c,d,e) + X[ 4],  5) + a; d = RL(d, 10);
		a = RL(a + f1(b,c,d) + X[ 5],  8) + e; c = RL(c, 10);
		e = RL(e + f1(a,b,c) + X[ 6],  7) + d; b = RL(b, 10);
		d = RL(d + f1(e,a,b) + X[ 7],  9) + c; a = RL(a, 10);
		c = RL(c + f1(d,e,a) + X[ 8], 11) + b; e = RL(e, 10);
		b = RL(b + f1(c,d,e) + X[ 9], 13) + a; d = RL(d, 10);
		a = RL(a + f1(b,c,d) + X[10], 14) + e; c = RL(c, 10);
		e = RL(e + f1(a,b,c) + X[11], 15) + d; b = RL(b, 10);
		d = RL(d + f1(e,a,b) + X[12],  6) + c; a = RL(a, 10);
		c = RL(c + f1(d,e,a) + X[13],  7) + b; e = RL(e, 10);
		b = RL(b + f1(c,d,e) + X[14],  9) + a; d = RL(d, 10);
		a = RL(a + f1(b,c,d) + X[15],  8) + e; c = RL(c, 10);

		// right
		aa = RL(aa + f5(bb,cc,dd) + X[ 5] + 0x50a28be6,  8) + ee; cc = RL(cc, 10);
		ee = RL(ee + f5(aa,bb,cc) + X[14] + 0x50a28be6,  9) + dd; bb = RL(bb, 10);
		dd = RL(dd + f5(ee,aa,bb) + X[ 7] + 0x50a28be6,  9) + cc; aa = RL(aa, 10);
		cc = RL(cc + f5(dd,ee,aa) + X[ 0] + 0x50a28be6, 11) + bb; ee = RL(ee, 10);
		bb = RL(bb + f5(cc,dd,ee) + X[ 9] + 0x50a28be6, 13) + aa; dd = RL(dd, 10);
		aa = RL(aa + f5(bb,cc,dd) + X[ 2] + 0x50a28be6, 15) + ee; cc = RL(cc, 10);
		ee = RL(ee + f5(aa,bb,cc) + X[11] + 0x50a28be6, 15) + dd; bb = RL(bb, 10);
		dd = RL(dd + f5(ee,aa,bb) + X[ 4] + 0x50a28be6,  5) + cc; aa = RL(aa, 10);
		cc = RL(cc + f5(dd,ee,aa) + X[13] + 0x50a28be6,  7) + bb; ee = RL(ee, 10);
		bb = RL(bb + f5(cc,dd,ee) + X[ 6] + 0x50a28be6,  7) + aa; dd = RL(dd, 10);
		aa = RL(aa + f5(bb,cc,dd) + X[15] + 0x50a28be6,  8) + ee; cc = RL(cc, 10);
		ee = RL(ee + f5(aa,bb,cc) + X[ 8] + 0x50a28be6, 11) + dd; bb = RL(bb, 10);
		dd = RL(dd + f5(ee,aa,bb) + X[ 1] + 0x50a28be6, 14) + cc; aa = RL(aa, 10);
		cc = RL(cc + f5(dd,ee,aa) + X[10] + 0x50a28be6, 14) + bb; ee = RL(ee, 10);
		bb = RL(bb + f5(cc,dd,ee) + X[ 3] + 0x50a28be6, 12) + aa; dd = RL(dd, 10);
		aa = RL(aa + f5(bb,cc,dd) + X[12] + 0x50a28be6,  6) + ee; cc = RL(cc, 10);

		//
		// Rounds 16-31
		//
		// left
		e = RL(e + f2(a,b,c) + X[ 7] + 0x5a827999,  7) + d; b = RL(b, 10);
		d = RL(d + f2(e,a,b) + X[ 4] + 0x5a827999,  6) + c; a = RL(a, 10);
		c = RL(c + f2(d,e,a) + X[13] + 0x5a827999,  8) + b; e = RL(e, 10);
		b = RL(b + f2(c,d,e) + X[ 1] + 0x5a827999, 13) + a; d = RL(d, 10);
		a = RL(a + f2(b,c,d) + X[10] + 0x5a827999, 11) + e; c = RL(c, 10);
		e = RL(e + f2(a,b,c) + X[ 6] + 0x5a827999,  9) + d; b = RL(b, 10);
		d = RL(d + f2(e,a,b) + X[15] + 0x5a827999,  7) + c; a = RL(a, 10);
		c = RL(c + f2(d,e,a) + X[ 3] + 0x5a827999, 15) + b; e = RL(e, 10);
		b = RL(b + f2(c,d,e) + X[12] + 0x5a827999,  7) + a; d = RL(d, 10);
		a = RL(a + f2(b,c,d) + X[ 0] + 0x5a827999, 12) + e; c = RL(c, 10);
		e = RL(e + f2(a,b,c) + X[ 9] + 0x5a827999, 15) + d; b = RL(b, 10);
		d = RL(d + f2(e,a,b) + X[ 5] + 0x5a827999,  9) + c; a = RL(a, 10);
		c = RL(c + f2(d,e,a) + X[ 2] + 0x5a827999, 11) + b; e = RL(e, 10);
		b = RL(b + f2(c,d,e) + X[14] + 0x5a827999,  7) + a; d = RL(d, 10);
		a = RL(a + f2(b,c,d) + X[11] + 0x5a827999, 13) + e; c = RL(c, 10);
		e = RL(e + f2(a,b,c) + X[ 8] + 0x5a827999, 12) + d; b = RL(b, 10);

		// right
		ee = RL(ee + f4(aa,bb,cc) + X[ 6] + 0x5c4dd124,  9) + dd; bb = RL(bb, 10);
		dd = RL(dd + f4(ee,aa,bb) + X[11] + 0x5c4dd124, 13) + cc; aa = RL(aa, 10);
		cc = RL(cc + f4(dd,ee,aa) + X[ 3] + 0x5c4dd124, 15) + bb; ee = RL(ee, 10);
		bb = RL(bb + f4(cc,dd,ee) + X[ 7] + 0x5c4dd124,  7) + aa; dd = RL(dd, 10);
		aa = RL(aa + f4(bb,cc,dd) + X[ 0] + 0x5c4dd124, 12) + ee; cc = RL(cc, 10);
		ee = RL(ee + f4(aa,bb,cc) + X[13] + 0x5c4dd124,  8) + dd; bb = RL(bb, 10);
		dd = RL(dd + f4(ee,aa,bb) + X[ 5] + 0x5c4dd124,  9) + cc; aa = RL(aa, 10);
		cc = RL(cc + f4(dd,ee,aa) + X[10] + 0x5c4dd124, 11) + bb; ee = RL(ee, 10);
		bb = RL(bb + f4(cc,dd,ee) + X[14] + 0x5c4dd124,  7) + aa; dd = RL(dd, 10);
		aa = RL(aa + f4(bb,cc,dd) + X[15] + 0x5c4dd124,  7) + ee; cc = RL(cc, 10);
		ee = RL(ee + f4(aa,bb,cc) + X[ 8] + 0x5c4dd124, 12) + dd; bb = RL(bb, 10);
		dd = RL(dd + f4(ee,aa,bb) + X[12] + 0x5c4dd124,  7) + cc; aa = RL(aa, 10);
		cc = RL(cc + f4(dd,ee,aa) + X[ 4] + 0x5c4dd124,  6) + bb; ee = RL(ee, 10);
		bb = RL(bb + f4(cc,dd,ee) + X[ 9] + 0x5c4dd124, 15) + aa; dd = RL(dd, 10);
		aa = RL(aa + f4(bb,cc,dd) + X[ 1] + 0x5c4dd124, 13) + ee; cc = RL(cc, 10);
		ee = RL(ee + f4(aa,bb,cc) + X[ 2] + 0x5c4dd124, 11) + dd; bb = RL(bb, 10);

		//
		// Rounds 32-47
		//
		// left
		d = RL(d + f3(e,a,b) + X[ 3] + 0x6ed9eba1, 11) + c; a = RL(a, 10);
		c = RL(c + f3(d,e,a) + X[10] + 0x6ed9eba1, 13) + b; e = RL(e, 10);
		b = RL(b + f3(c,d,e) + X[14] + 0x6ed9eba1,  6) + a; d = RL(d, 10);
		a = RL(a + f3(b,c,d) + X[ 4] + 0x6ed9eba1,  7) + e; c = RL(c, 10);
		e = RL(e + f3(a,b,c) + X[ 9] + 0x6ed9eba1, 14) + d; b = RL(b, 10);
		d = RL(d + f3(e,a,b) + X[15] + 0x6ed9eba1,  9) + c; a = RL(a, 10);
		c = RL(c + f3(d,e,a) + X[ 8] + 0x6ed9eba1, 13) + b; e = RL(e, 10);
		b = RL(b + f3(c,d,e) + X[ 1] + 0x6ed9eba1, 15) + a; d = RL(d, 10);
		a = RL(a + f3(b,c,d) + X[ 2] + 0x6ed9eba1, 14) + e; c = RL(c, 10);
		e = RL(e + f3(a,b,c) + X[ 7] + 0x6ed9eba1,  8) + d; b = RL(b, 10);
		d = RL(d + f3(e,a,b) + X[ 0] + 0x6ed9eba1, 13) + c; a = RL(a, 10);
		c = RL(c + f3(d,e,a) + X[ 6] + 0x6ed9eba1,  6) + b; e = RL(e, 10);
		b = RL(b + f3(c,d,e) + X[13] + 0x6ed9eba1,  5) + a; d = RL(d, 10);
		a = RL(a + f3(b,c,d) + X[11] + 0x6ed9eba1, 12) + e; c = RL(c, 10);
		e = RL(e + f3(a,b,c) + X[ 5] + 0x6ed9eba1,  7) + d; b = RL(b, 10);
		d = RL(d + f3(e,a,b) + X[12] + 0x6ed9eba1,  5) + c; a = RL(a, 10);

		// right
		dd = RL(dd + f3(ee,aa,bb) + X[15] + 0x6d703ef3,  9) + cc; aa = RL(aa, 10);
		cc = RL(cc + f3(dd,ee,aa) + X[ 5] + 0x6d703ef3,  7) + bb; ee = RL(ee, 10);
		bb = RL(bb + f3(cc,dd,ee) + X[ 1] + 0x6d703ef3, 15) + aa; dd = RL(dd, 10);
		aa = RL(aa + f3(bb,cc,dd) + X[ 3] + 0x6d703ef3, 11) + ee; cc = RL(cc, 10);
		ee = RL(ee + f3(aa,bb,cc) + X[ 7] + 0x6d703ef3,  8) + dd; bb = RL(bb, 10);
		dd = RL(dd + f3(ee,aa,bb) + X[14] + 0x6d703ef3,  6) + cc; aa = RL(aa, 10);
		cc = RL(cc + f3(dd,ee,aa) + X[ 6] + 0x6d703ef3,  6) + bb; ee = RL(ee, 10);
		bb = RL(bb + f3(cc,dd,ee) + X[ 9] + 0x6d703ef3, 14) + aa; dd = RL(dd, 10);
		aa = RL(aa + f3(bb,cc,dd) + X[11] + 0x6d703ef3, 12) + ee; cc = RL(cc, 10);
		ee = RL(ee + f3(aa,bb,cc) + X[ 8] + 0x6d703ef3, 13) + dd; bb = RL(bb, 10);
		dd = RL(dd + f3(ee,aa,bb) + X[12] + 0x6d703ef3,  5) + cc; aa = RL(aa, 10);
		cc = RL(cc + f3(dd,ee,aa) + X[ 2] + 0x6d703ef3, 14) + bb; ee = RL(ee, 10);
		bb = RL(bb + f3(cc,dd,ee) + X[10] + 0x6d703ef3, 13) + aa; dd = RL(dd, 10);
		aa = RL(aa + f3(bb,cc,dd) + X[ 0] + 0x6d703ef3, 13) + ee; cc = RL(cc, 10);
		ee = RL(ee + f3(aa,bb,cc) + X[ 4] + 0x6d703ef3,  7) + dd; bb = RL(bb, 10);
		dd = RL(dd + f3(ee,aa,bb) + X[13] + 0x6d703ef3,  5) + cc; aa = RL(aa, 10);

		//
		// Rounds 48-63
		//
		// left
		c = RL(c + f4(d,e,a) + X[ 1] + 0x8f1bbcdc, 11) + b; e = RL(e, 10);
		b = RL(b + f4(c,d,e) + X[ 9] + 0x8f1bbcdc, 12) + a; d = RL(d, 10);
		a = RL(a + f4(b,c,d) + X[11] + 0x8f1bbcdc, 14) + e; c = RL(c, 10);
		e = RL(e + f4(a,b,c) + X[10] + 0x8f1bbcdc, 15) + d; b = RL(b, 10);
		d = RL(d + f4(e,a,b) + X[ 0] + 0x8f1bbcdc, 14) + c; a = RL(a, 10);
		c = RL(c + f4(d,e,a) + X[ 8] + 0x8f1bbcdc, 15) + b; e = RL(e, 10);
		b = RL(b + f4(c,d,e) + X[12] + 0x8f1bbcdc,  9) + a; d = RL(d, 10);
		a = RL(a + f4(b,c,d) + X[ 4] + 0x8f1bbcdc,  8) + e; c = RL(c, 10);
		e = RL(e + f4(a,b,c) + X[13] + 0x8f1bbcdc,  9) + d; b = RL(b, 10);
		d = RL(d + f4(e,a,b) + X[ 3] + 0x8f1bbcdc, 14) + c; a = RL(a, 10);
		c = RL(c + f4(d,e,a) + X[ 7] + 0x8f1bbcdc,  5) + b; e = RL(e, 10);
		b = RL(b + f4(c,d,e) + X[15] + 0x8f1bbcdc,  6) + a; d = RL(d, 10);
		a = RL(a + f4(b,c,d) + X[14] + 0x8f1bbcdc,  8) + e; c = RL(c, 10);
		e = RL(e + f4(a,b,c) + X[ 5] + 0x8f1bbcdc,  6) + d; b = RL(b, 10);
		d = RL(d + f4(e,a,b) + X[ 6] + 0x8f1bbcdc,  5) + c; a = RL(a, 10);
		c = RL(c + f4(d,e,a) + X[ 2] + 0x8f1bbcdc, 12) + b; e = RL(e, 10);

		// right
		cc = RL(cc + f2(dd,ee,aa) + X[ 8] + 0x7a6d76e9, 15) + bb; ee = RL(ee, 10);
		bb = RL(bb + f2(cc,dd,ee) + X[ 6] + 0x7a6d76e9,  5) + aa; dd = RL(dd, 10);
		aa = RL(aa + f2(bb,cc,dd) + X[ 4] + 0x7a6d76e9,  8) + ee; cc = RL(cc, 10);
		ee = RL(ee + f2(aa,bb,cc) + X[ 1] + 0x7a6d76e9, 11) + dd; bb = RL(bb, 10);
		dd = RL(dd + f2(ee,aa,bb) + X[ 3] + 0x7a6d76e9, 14) + cc; aa = RL(aa, 10);
		cc = RL(cc + f2(dd,ee,aa) + X[11] + 0x7a6d76e9, 14) + bb; ee = RL(ee, 10);
		bb = RL(bb + f2(cc,dd,ee) + X[15] + 0x7a6d76e9,  6) + aa; dd = RL(dd, 10);
		aa = RL(aa + f2(bb,cc,dd) + X[ 0] + 0x7a6d76e9, 14) + ee; cc = RL(cc, 10);
		ee = RL(ee + f2(aa,bb,cc) + X[ 5] + 0x7a6d76e9,  6) + dd; bb = RL(bb, 10);
		dd = RL(dd + f2(ee,aa,bb) + X[12] + 0x7a6d76e9,  9) + cc; aa = RL(aa, 10);
		cc = RL(cc + f2(dd,ee,aa) + X[ 2] + 0x7a6d76e9, 12) + bb; ee = RL(ee, 10);
		bb = RL(bb + f2(cc,dd,ee) + X[13] + 0x7a6d76e9,  9) + aa; dd = RL(dd, 10);
		aa = RL(aa + f2(bb,cc,dd) + X[ 9] + 0x7a6d76e9, 12) + ee; cc = RL(cc, 10);
		ee = RL(ee + f2(aa,bb,cc) + X[ 7] + 0x7a6d76e9,  5) + dd; bb = RL(bb, 10);
		dd = RL(dd + f2(ee,aa,bb) + X[10] + 0x7a6d76e9, 15) + cc; aa = RL(aa, 10);
		cc = RL(cc + f2(dd,ee,aa) + X[14] + 0x7a6d76e9,  8) + bb; ee = RL(ee, 10);

		//
		// Rounds 64-79
		//
		// left
		b = RL(b + f5(c,d,e) + X[ 4] + 0xa953fd4e,  9) + a; d = RL(d, 10);
		a = RL(a + f5(b,c,d) + X[ 0] + 0xa953fd4e, 15) + e; c = RL(c, 10);
		e = RL(e + f5(a,b,c) + X[ 5] + 0xa953fd4e,  5) + d; b = RL(b, 10);
		d = RL(d + f5(e,a,b) + X[ 9] + 0xa953fd4e, 11) + c; a = RL(a, 10);
		c = RL(c + f5(d,e,a) + X[ 7] + 0xa953fd4e,  6) + b; e = RL(e, 10);
		b = RL(b + f5(c,d,e) + X[12] + 0xa953fd4e,  8) + a; d = RL(d, 10);
		a = RL(a + f5(b,c,d) + X[ 2] + 0xa953fd4e, 13) + e; c = RL(c, 10);
		e = RL(e + f5(a,b,c) + X[10] + 0xa953fd4e, 12) + d; b = RL(b, 10);
		d = RL(d + f5(e,a,b) + X[14] + 0xa953fd4e,  5) + c; a = RL(a, 10);
		c = RL(c + f5(d,e,a) + X[ 1] + 0xa953fd4e, 12) + b; e = RL(e, 10);
		b = RL(b + f5(c,d,e) + X[ 3] + 0xa953fd4e, 13) + a; d = RL(d, 10);
		a = RL(a + f5(b,c,d) + X[ 8] + 0xa953fd4e, 14) + e; c = RL(c, 10);
		e = RL(e + f5(a,b,c) + X[11] + 0xa953fd4e, 11) + d; b = RL(b, 10);
		d = RL(d + f5(e,a,b) + X[ 6] + 0xa953fd4e,  8) + c; a = RL(a, 10);
		c = RL(c + f5(d,e,a) + X[15] + 0xa953fd4e,  5) + b; e = RL(e, 10);
		b = RL(b + f5(c,d,e) + X[13] + 0xa953fd4e,  6) + a; d = RL(d, 10);

		// right
		bb = RL(bb + f1(cc,dd,ee) + X[12],  8) + aa; dd = RL(dd, 10);
		aa = RL(aa + f1(bb,cc,dd) + X[15],  5) + ee; cc = RL(cc, 10);
		ee = RL(ee + f1(aa,bb,cc) + X[10], 12) + dd; bb = RL(bb, 10);
		dd = RL(dd + f1(ee,aa,bb) + X[ 4],  9) + cc; aa = RL(aa, 10);
		cc = RL(cc + f1(dd,ee,aa) + X[ 1], 12) + bb; ee = RL(ee, 10);
		bb = RL(bb + f1(cc,dd,ee) + X[ 5],  5) + aa; dd = RL(dd, 10);
		aa = RL(aa + f1(bb,cc,dd) + X[ 8], 14) + ee; cc = RL(cc, 10);
		ee = RL(ee + f1(aa,bb,cc) + X[ 7],  6) + dd; bb = RL(bb, 10);
		dd = RL(dd + f1(ee,aa,bb) + X[ 6],  8) + cc; aa = RL(aa, 10);
		cc = RL(cc + f1(dd,ee,aa) + X[ 2], 13) + bb; ee = RL(ee, 10);
		bb = RL(bb + f1(cc,dd,ee) + X[13],  6) + aa; dd = RL(dd, 10);
		aa = RL(aa + f1(bb,cc,dd) + X[14],  5) + ee; cc = RL(cc, 10);
		ee = RL(ee + f1(aa,bb,cc) + X[ 0], 15) + dd; bb = RL(bb, 10);
		dd = RL(dd + f1(ee,aa,bb) + X[ 3], 13) + cc; aa = RL(aa, 10);
		cc = RL(cc + f1(dd,ee,aa) + X[ 9], 11) + bb; ee = RL(ee, 10);
		bb = RL(bb + f1(cc,dd,ee) + X[11], 11) + aa; dd = RL(dd, 10);

		dd += c + H1;
		H1 = H2 + d + ee;
		H2 = H3 + e + aa;
		H3 = H4 + a + bb;
		H4 = H0 + b + cc;
		H0 = dd;

		//
		// reset the offset and clean out the word buffer.
		//
		xOff = 0;
		for (int i = 0; i != X.length; i++)
		{
			X[i] = 0;
		}
	
protected voidprocessLength(long bitLength)

		if (xOff > 14)
		{
		processBlock();
		}

		X[14] = (int)(bitLength & 0xffffffff);
		X[15] = (int)(bitLength >>> 32);
	
protected voidprocessWord(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();
		}
	
public voidreset()
reset the chaining variables to the IV values.

		super.reset();

		H0 = 0x67452301;
		H1 = 0xefcdab89;
		H2 = 0x98badcfe;
		H3 = 0x10325476;
		H4 = 0xc3d2e1f0;

		xOff = 0;

		for (int i = 0; i != X.length; i++)
		{
			X[i] = 0;
		}
	
private voidunpackWord(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);