```using System;

using Org.BouncyCastle.Utilities;

namespace Org.BouncyCastle.Crypto.Digests
{
/// <remarks>
/// <p>Implementation of RipeMD 320.</p>
/// <p><b>Note: this algorithm offers the same level of security as RipeMD160.
/// </remarks>
public class RipeMD320Digest
: GeneralDigest
{
public override string AlgorithmName
{
get { return "RIPEMD320"; }
}

public override int GetDigestSize()
{
return DigestLength;
}

private const int DigestLength = 40;

private int H0, H1, H2, H3, H4, H5, H6, H7, H8, H9; // IV's

private int[] X = new int[16];
private int xOff;

/// <summary> Standard constructor</summary>
public RipeMD320Digest()
{
Reset();
}

/// <summary> Copy constructor.  This will copy the state of the provided
/// message digest.
/// </summary>
public RipeMD320Digest(RipeMD320Digest t)
: base(t)
{
CopyIn(t);
}

private void CopyIn(RipeMD320Digest t)
{
base.CopyIn(t);

H0 = t.H0;
H1 = t.H1;
H2 = t.H2;
H3 = t.H3;
H4 = t.H4;
H5 = t.H5;
H6 = t.H6;
H7 = t.H7;
H8 = t.H8;
H9 = t.H9;

Array.Copy(t.X, 0, X, 0, t.X.Length);
xOff = t.xOff;
}

internal override void ProcessWord(
byte[] input,
int inOff)
{
X[xOff++] = (input[inOff] & 0xff) | ((input[inOff + 1] & 0xff) << 8)
| ((input[inOff + 2] & 0xff) << 16) | ((input[inOff + 3] & 0xff) << 24);

if (xOff == 16)
{
ProcessBlock();
}
}

internal override void ProcessLength(
long bitLength)
{
if (xOff > 14)
{
ProcessBlock();
}

X[14] = (int)(bitLength & 0xffffffff);
X[15] = (int)((ulong)bitLength >> 32);
}

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

public override int DoFinal(byte[] output, int outOff)
{
Finish();

UnpackWord(H0, output, outOff);
UnpackWord(H1, output, outOff + 4);
UnpackWord(H2, output, outOff + 8);
UnpackWord(H3, output, outOff + 12);
UnpackWord(H4, output, outOff + 16);
UnpackWord(H5, output, outOff + 20);
UnpackWord(H6, output, outOff + 24);
UnpackWord(H7, output, outOff + 28);
UnpackWord(H8, output, outOff + 32);
UnpackWord(H9, output, outOff + 36);

Reset();

return DigestLength;
}

/// <summary> reset the chaining variables to the IV values.</summary>
public override void  Reset()
{
base.Reset();

H0 = unchecked((int) 0x67452301);
H1 = unchecked((int) 0xefcdab89);
H3 = unchecked((int) 0x10325476);
H4 = unchecked((int) 0xc3d2e1f0);
H5 = unchecked((int) 0x76543210);
H6 = unchecked((int) 0xFEDCBA98);
H7 = unchecked((int) 0x89ABCDEF);
H8 = unchecked((int) 0x01234567);
H9 = unchecked((int) 0x3C2D1E0F);

xOff = 0;

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

/*
* rotate int x left n bits.
*/
private int RL(
int x,
int n)
{
return (x << n) | (int)(((uint)x) >> (32 - n));
}

/*
* f1,f2,f3,f4,f5 are the basic RipeMD160 functions.
*/

/*
* rounds 0-15
*/
private int F1(int x, int y, int z)
{
return x ^ y ^ z;
}

/*
* rounds 16-31
*/
private int F2(int x, int y, int z)
{
return (x & y) | (~ x & z);
}

/*
* rounds 32-47
*/
private int F3(int x, int y, int z)
{
return (x | ~ y) ^ z;
}

/*
* rounds 48-63
*/
private int F4(int x, int y, int z)
{
return (x & z) | (y & ~ z);
}

/*
* rounds 64-79
*/
private int F5(int x, int y, int z)
{
return x ^ (y | ~z);
}

internal override void ProcessBlock()
{
int a, aa;
int b, bb;
int c, cc;
int d, dd;
int e, ee;
int t;

a = H0;
b = H1;
c = H2;
d = H3;
e = H4;
aa = H5;
bb = H6;
cc = H7;
dd = H8;
ee = H9;

//
// 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] + unchecked((int)0x50a28be6), 8) + ee; cc = RL(cc, 10);
ee = RL(ee + F5(aa, bb, cc) + X[14] + unchecked((int)0x50a28be6), 9) + dd; bb = RL(bb, 10);
dd = RL(dd + F5(ee, aa, bb) + X[7] + unchecked((int)0x50a28be6), 9) + cc; aa = RL(aa, 10);
cc = RL(cc + F5(dd, ee, aa) + X[0] + unchecked((int)0x50a28be6), 11) + bb; ee = RL(ee, 10);
bb = RL(bb + F5(cc, dd, ee) + X[9] + unchecked((int)0x50a28be6), 13) + aa; dd = RL(dd, 10);
aa = RL(aa + F5(bb, cc, dd) + X[2] + unchecked((int)0x50a28be6), 15) + ee; cc = RL(cc, 10);
ee = RL(ee + F5(aa, bb, cc) + X[11] + unchecked((int)0x50a28be6), 15) + dd; bb = RL(bb, 10);
dd = RL(dd + F5(ee, aa, bb) + X[4] + unchecked((int)0x50a28be6), 5) + cc; aa = RL(aa, 10);
cc = RL(cc + F5(dd, ee, aa) + X[13] + unchecked((int)0x50a28be6), 7) + bb; ee = RL(ee, 10);
bb = RL(bb + F5(cc, dd, ee) + X[6] + unchecked((int)0x50a28be6), 7) + aa; dd = RL(dd, 10);
aa = RL(aa + F5(bb, cc, dd) + X[15] + unchecked((int)0x50a28be6), 8) + ee; cc = RL(cc, 10);
ee = RL(ee + F5(aa, bb, cc) + X[8] + unchecked((int)0x50a28be6), 11) + dd; bb = RL(bb, 10);
dd = RL(dd + F5(ee, aa, bb) + X[1] + unchecked((int)0x50a28be6), 14) + cc; aa = RL(aa, 10);
cc = RL(cc + F5(dd, ee, aa) + X[10] + unchecked((int)0x50a28be6), 14) + bb; ee = RL(ee, 10);
bb = RL(bb + F5(cc, dd, ee) + X[3] + unchecked((int)0x50a28be6), 12) + aa; dd = RL(dd, 10);
aa = RL(aa + F5(bb, cc, dd) + X[12] + unchecked((int)0x50a28be6), 6) + ee; cc = RL(cc, 10);

t = a; a = aa; aa = t;
//
// Rounds 16-31
//
// left
e = RL(e + F2(a, b, c) + X[7] + unchecked((int)0x5a827999), 7) + d; b = RL(b, 10);
d = RL(d + F2(e, a, b) + X[4] + unchecked((int)0x5a827999), 6) + c; a = RL(a, 10);
c = RL(c + F2(d, e, a) + X[13] + unchecked((int)0x5a827999), 8) + b; e = RL(e, 10);
b = RL(b + F2(c, d, e) + X[1] + unchecked((int)0x5a827999), 13) + a; d = RL(d, 10);
a = RL(a + F2(b, c, d) + X[10] + unchecked((int)0x5a827999), 11) + e; c = RL(c, 10);
e = RL(e + F2(a, b, c) + X[6] + unchecked((int)0x5a827999), 9) + d; b = RL(b, 10);
d = RL(d + F2(e, a, b) + X[15] + unchecked((int)0x5a827999), 7) + c; a = RL(a, 10);
c = RL(c + F2(d, e, a) + X[3] + unchecked((int)0x5a827999), 15) + b; e = RL(e, 10);
b = RL(b + F2(c, d, e) + X[12] + unchecked((int)0x5a827999), 7) + a; d = RL(d, 10);
a = RL(a + F2(b, c, d) + X[0] + unchecked((int)0x5a827999), 12) + e; c = RL(c, 10);
e = RL(e + F2(a, b, c) + X[9] + unchecked((int)0x5a827999), 15) + d; b = RL(b, 10);
d = RL(d + F2(e, a, b) + X[5] + unchecked((int)0x5a827999), 9) + c; a = RL(a, 10);
c = RL(c + F2(d, e, a) + X[2] + unchecked((int)0x5a827999), 11) + b; e = RL(e, 10);
b = RL(b + F2(c, d, e) + X[14] + unchecked((int)0x5a827999), 7) + a; d = RL(d, 10);
a = RL(a + F2(b, c, d) + X[11] + unchecked((int)0x5a827999), 13) + e; c = RL(c, 10);
e = RL(e + F2(a, b, c) + X[8] + unchecked((int)0x5a827999), 12) + d; b = RL(b, 10);

// right
ee = RL(ee + F4(aa, bb, cc) + X[6] + unchecked((int)0x5c4dd124), 9) + dd; bb = RL(bb, 10);
dd = RL(dd + F4(ee, aa, bb) + X[11] + unchecked((int)0x5c4dd124), 13) + cc; aa = RL(aa, 10);
cc = RL(cc + F4(dd, ee, aa) + X[3] + unchecked((int)0x5c4dd124), 15) + bb; ee = RL(ee, 10);
bb = RL(bb + F4(cc, dd, ee) + X[7] + unchecked((int)0x5c4dd124), 7) + aa; dd = RL(dd, 10);
aa = RL(aa + F4(bb, cc, dd) + X[0] + unchecked((int)0x5c4dd124), 12) + ee; cc = RL(cc, 10);
ee = RL(ee + F4(aa, bb, cc) + X[13] + unchecked((int)0x5c4dd124), 8) + dd; bb = RL(bb, 10);
dd = RL(dd + F4(ee, aa, bb) + X[5] + unchecked((int)0x5c4dd124), 9) + cc; aa = RL(aa, 10);
cc = RL(cc + F4(dd, ee, aa) + X[10] + unchecked((int)0x5c4dd124), 11) + bb; ee = RL(ee, 10);
bb = RL(bb + F4(cc, dd, ee) + X[14] + unchecked((int)0x5c4dd124), 7) + aa; dd = RL(dd, 10);
aa = RL(aa + F4(bb, cc, dd) + X[15] + unchecked((int)0x5c4dd124), 7) + ee; cc = RL(cc, 10);
ee = RL(ee + F4(aa, bb, cc) + X[8] + unchecked((int)0x5c4dd124), 12) + dd; bb = RL(bb, 10);
dd = RL(dd + F4(ee, aa, bb) + X[12] + unchecked((int)0x5c4dd124), 7) + cc; aa = RL(aa, 10);
cc = RL(cc + F4(dd, ee, aa) + X[4] + unchecked((int)0x5c4dd124), 6) + bb; ee = RL(ee, 10);
bb = RL(bb + F4(cc, dd, ee) + X[9] + unchecked((int)0x5c4dd124), 15) + aa; dd = RL(dd, 10);
aa = RL(aa + F4(bb, cc, dd) + X[1] + unchecked((int)0x5c4dd124), 13) + ee; cc = RL(cc, 10);
ee = RL(ee + F4(aa, bb, cc) + X[2] + unchecked((int)0x5c4dd124), 11) + dd; bb = RL(bb, 10);

t = b; b = bb; bb = t;

//
// Rounds 32-47
//
// left
d = RL(d + F3(e, a, b) + X[3] + unchecked((int)0x6ed9eba1), 11) + c; a = RL(a, 10);
c = RL(c + F3(d, e, a) + X[10] + unchecked((int)0x6ed9eba1), 13) + b; e = RL(e, 10);
b = RL(b + F3(c, d, e) + X[14] + unchecked((int)0x6ed9eba1), 6) + a; d = RL(d, 10);
a = RL(a + F3(b, c, d) + X[4] + unchecked((int)0x6ed9eba1), 7) + e; c = RL(c, 10);
e = RL(e + F3(a, b, c) + X[9] + unchecked((int)0x6ed9eba1), 14) + d; b = RL(b, 10);
d = RL(d + F3(e, a, b) + X[15] + unchecked((int)0x6ed9eba1), 9) + c; a = RL(a, 10);
c = RL(c + F3(d, e, a) + X[8] + unchecked((int)0x6ed9eba1), 13) + b; e = RL(e, 10);
b = RL(b + F3(c, d, e) + X[1] + unchecked((int)0x6ed9eba1), 15) + a; d = RL(d, 10);
a = RL(a + F3(b, c, d) + X[2] + unchecked((int)0x6ed9eba1), 14) + e; c = RL(c, 10);
e = RL(e + F3(a, b, c) + X[7] + unchecked((int)0x6ed9eba1), 8) + d; b = RL(b, 10);
d = RL(d + F3(e, a, b) + X[0] + unchecked((int)0x6ed9eba1), 13) + c; a = RL(a, 10);
c = RL(c + F3(d, e, a) + X[6] + unchecked((int)0x6ed9eba1), 6) + b; e = RL(e, 10);
b = RL(b + F3(c, d, e) + X[13] + unchecked((int)0x6ed9eba1), 5) + a; d = RL(d, 10);
a = RL(a + F3(b, c, d) + X[11] + unchecked((int)0x6ed9eba1), 12) + e; c = RL(c, 10);
e = RL(e + F3(a, b, c) + X[5] + unchecked((int)0x6ed9eba1), 7) + d; b = RL(b, 10);
d = RL(d + F3(e, a, b) + X[12] + unchecked((int)0x6ed9eba1), 5) + c; a = RL(a, 10);

// right
dd = RL(dd + F3(ee, aa, bb) + X[15] + unchecked((int)0x6d703ef3), 9) + cc; aa = RL(aa, 10);
cc = RL(cc + F3(dd, ee, aa) + X[5] + unchecked((int)0x6d703ef3), 7) + bb; ee = RL(ee, 10);
bb = RL(bb + F3(cc, dd, ee) + X[1] + unchecked((int)0x6d703ef3), 15) + aa; dd = RL(dd, 10);
aa = RL(aa + F3(bb, cc, dd) + X[3] + unchecked((int)0x6d703ef3), 11) + ee; cc = RL(cc, 10);
ee = RL(ee + F3(aa, bb, cc) + X[7] + unchecked((int)0x6d703ef3), 8) + dd; bb = RL(bb, 10);
dd = RL(dd + F3(ee, aa, bb) + X[14] + unchecked((int)0x6d703ef3), 6) + cc; aa = RL(aa, 10);
cc = RL(cc + F3(dd, ee, aa) + X[6] + unchecked((int)0x6d703ef3), 6) + bb; ee = RL(ee, 10);
bb = RL(bb + F3(cc, dd, ee) + X[9] + unchecked((int)0x6d703ef3), 14) + aa; dd = RL(dd, 10);
aa = RL(aa + F3(bb, cc, dd) + X[11] + unchecked((int)0x6d703ef3), 12) + ee; cc = RL(cc, 10);
ee = RL(ee + F3(aa, bb, cc) + X[8] + unchecked((int)0x6d703ef3), 13) + dd; bb = RL(bb, 10);
dd = RL(dd + F3(ee, aa, bb) + X[12] + unchecked((int)0x6d703ef3), 5) + cc; aa = RL(aa, 10);
cc = RL(cc + F3(dd, ee, aa) + X[2] + unchecked((int)0x6d703ef3), 14) + bb; ee = RL(ee, 10);
bb = RL(bb + F3(cc, dd, ee) + X[10] + unchecked((int)0x6d703ef3), 13) + aa; dd = RL(dd, 10);
aa = RL(aa + F3(bb, cc, dd) + X[0] + unchecked((int)0x6d703ef3), 13) + ee; cc = RL(cc, 10);
ee = RL(ee + F3(aa, bb, cc) + X[4] + unchecked((int)0x6d703ef3), 7) + dd; bb = RL(bb, 10);
dd = RL(dd + F3(ee, aa, bb) + X[13] + unchecked((int)0x6d703ef3), 5) + cc; aa = RL(aa, 10);

t = c; c = cc; cc = t;

//
// Rounds 48-63
//
// left
c = RL(c + F4(d, e, a) + X[1] + unchecked((int)0x8f1bbcdc), 11) + b; e = RL(e, 10);
b = RL(b + F4(c, d, e) + X[9] + unchecked((int)0x8f1bbcdc), 12) + a; d = RL(d, 10);
a = RL(a + F4(b, c, d) + X[11] + unchecked((int)0x8f1bbcdc), 14) + e; c = RL(c, 10);
e = RL(e + F4(a, b, c) + X[10] + unchecked((int)0x8f1bbcdc), 15) + d; b = RL(b, 10);
d = RL(d + F4(e, a, b) + X[0] + unchecked((int)0x8f1bbcdc), 14) + c; a = RL(a, 10);
c = RL(c + F4(d, e, a) + X[8] + unchecked((int)0x8f1bbcdc), 15) + b; e = RL(e, 10);
b = RL(b + F4(c, d, e) + X[12] + unchecked((int)0x8f1bbcdc), 9) + a; d = RL(d, 10);
a = RL(a + F4(b, c, d) + X[4] + unchecked((int)0x8f1bbcdc), 8) + e; c = RL(c, 10);
e = RL(e + F4(a, b, c) + X[13] + unchecked((int)0x8f1bbcdc), 9) + d; b = RL(b, 10);
d = RL(d + F4(e, a, b) + X[3] + unchecked((int)0x8f1bbcdc), 14) + c; a = RL(a, 10);
c = RL(c + F4(d, e, a) + X[7] + unchecked((int)0x8f1bbcdc), 5) + b; e = RL(e, 10);
b = RL(b + F4(c, d, e) + X[15] + unchecked((int)0x8f1bbcdc), 6) + a; d = RL(d, 10);
a = RL(a + F4(b, c, d) + X[14] + unchecked((int)0x8f1bbcdc), 8) + e; c = RL(c, 10);
e = RL(e + F4(a, b, c) + X[5] + unchecked((int)0x8f1bbcdc), 6) + d; b = RL(b, 10);
d = RL(d + F4(e, a, b) + X[6] + unchecked((int)0x8f1bbcdc), 5) + c; a = RL(a, 10);
c = RL(c + F4(d, e, a) + X[2] + unchecked((int)0x8f1bbcdc), 12) + b; e = RL(e, 10);

// right
cc = RL(cc + F2(dd, ee, aa) + X[8] + unchecked((int)0x7a6d76e9), 15) + bb; ee = RL(ee, 10);
bb = RL(bb + F2(cc, dd, ee) + X[6] + unchecked((int)0x7a6d76e9), 5) + aa; dd = RL(dd, 10);
aa = RL(aa + F2(bb, cc, dd) + X[4] + unchecked((int)0x7a6d76e9), 8) + ee; cc = RL(cc, 10);
ee = RL(ee + F2(aa, bb, cc) + X[1] + unchecked((int)0x7a6d76e9), 11) + dd; bb = RL(bb, 10);
dd = RL(dd + F2(ee, aa, bb) + X[3] + unchecked((int)0x7a6d76e9), 14) + cc; aa = RL(aa, 10);
cc = RL(cc + F2(dd, ee, aa) + X[11] + unchecked((int)0x7a6d76e9), 14) + bb; ee = RL(ee, 10);
bb = RL(bb + F2(cc, dd, ee) + X[15] + unchecked((int)0x7a6d76e9), 6) + aa; dd = RL(dd, 10);
aa = RL(aa + F2(bb, cc, dd) + X[0] + unchecked((int)0x7a6d76e9), 14) + ee; cc = RL(cc, 10);
ee = RL(ee + F2(aa, bb, cc) + X[5] + unchecked((int)0x7a6d76e9), 6) + dd; bb = RL(bb, 10);
dd = RL(dd + F2(ee, aa, bb) + X[12] + unchecked((int)0x7a6d76e9), 9) + cc; aa = RL(aa, 10);
cc = RL(cc + F2(dd, ee, aa) + X[2] + unchecked((int)0x7a6d76e9), 12) + bb; ee = RL(ee, 10);
bb = RL(bb + F2(cc, dd, ee) + X[13] + unchecked((int)0x7a6d76e9), 9) + aa; dd = RL(dd, 10);
aa = RL(aa + F2(bb, cc, dd) + X[9] + unchecked((int)0x7a6d76e9), 12) + ee; cc = RL(cc, 10);
ee = RL(ee + F2(aa, bb, cc) + X[7] + unchecked((int)0x7a6d76e9), 5) + dd; bb = RL(bb, 10);
dd = RL(dd + F2(ee, aa, bb) + X[10] + unchecked((int)0x7a6d76e9), 15) + cc; aa = RL(aa, 10);
cc = RL(cc + F2(dd, ee, aa) + X[14] + unchecked((int)0x7a6d76e9), 8) + bb; ee = RL(ee, 10);

t = d; d = dd; dd = t;

//
// Rounds 64-79
//
// left
b = RL(b + F5(c, d, e) + X[4] + unchecked((int)0xa953fd4e), 9) + a; d = RL(d, 10);
a = RL(a + F5(b, c, d) + X[0] + unchecked((int)0xa953fd4e), 15) + e; c = RL(c, 10);
e = RL(e + F5(a, b, c) + X[5] + unchecked((int)0xa953fd4e), 5) + d; b = RL(b, 10);
d = RL(d + F5(e, a, b) + X[9] + unchecked((int)0xa953fd4e), 11) + c; a = RL(a, 10);
c = RL(c + F5(d, e, a) + X[7] + unchecked((int)0xa953fd4e), 6) + b; e = RL(e, 10);
b = RL(b + F5(c, d, e) + X[12] + unchecked((int)0xa953fd4e), 8) + a; d = RL(d, 10);
a = RL(a + F5(b, c, d) + X[2] + unchecked((int)0xa953fd4e), 13) + e; c = RL(c, 10);
e = RL(e + F5(a, b, c) + X[10] + unchecked((int)0xa953fd4e), 12) + d; b = RL(b, 10);
d = RL(d + F5(e, a, b) + X[14] + unchecked((int)0xa953fd4e), 5) + c; a = RL(a, 10);
c = RL(c + F5(d, e, a) + X[1] + unchecked((int)0xa953fd4e), 12) + b; e = RL(e, 10);
b = RL(b + F5(c, d, e) + X[3] + unchecked((int)0xa953fd4e), 13) + a; d = RL(d, 10);
a = RL(a + F5(b, c, d) + X[8] + unchecked((int)0xa953fd4e), 14) + e; c = RL(c, 10);
e = RL(e + F5(a, b, c) + X[11] + unchecked((int)0xa953fd4e), 11) + d; b = RL(b, 10);
d = RL(d + F5(e, a, b) + X[6] + unchecked((int)0xa953fd4e), 8) + c; a = RL(a, 10);
c = RL(c + F5(d, e, a) + X[15] + unchecked((int)0xa953fd4e), 5) + b; e = RL(e, 10);
b = RL(b + F5(c, d, e) + X[13] + unchecked((int)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);

//
// do (e, ee) swap as part of assignment.
//

H0 += a;
H1 += b;
H2 += c;
H3 += d;
H4 += ee;
H5 += aa;
H6 += bb;
H7 += cc;
H8 += dd;
H9 += e;

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

public override IMemoable Copy()
{
return new RipeMD320Digest(this);
}

public override void Reset(IMemoable other)
{
RipeMD320Digest d = (RipeMD320Digest)other;

CopyIn(d);
}

}
}
```