internal override void ProcessBlock()
{
int a, aa;
int b, bb;
int c, cc;
int d, dd;
a = aa = H0;
b = bb = H1;
c = cc = H2;
d = dd = H3;
//
// Round 1
//
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);
//
// Round 2
//
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);
//
// Round 3
//
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);
//
// Round 4
//
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);
//
// Parallel round 1
//
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);
//
// Parallel round 2
//
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);
//
// Parallel round 3
//
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);
//
// Parallel round 4
//
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; // final result for H0
//
// combine the results
//
H1 = H2 + d + aa;
H2 = H3 + a + bb;
H3 = 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;
}
}
}
