private void ProcessBlock (byte[] inputBuffer, int inputOffset)
{
uint a, b, c, d;
int i;
count += BLOCK_SIZE_BYTES;
for (i=0; i<16; i++) {
buff[i] = (uint)(inputBuffer[inputOffset+4*i])
| (((uint)(inputBuffer[inputOffset+4*i+1])) << 8)
| (((uint)(inputBuffer[inputOffset+4*i+2])) << 16)
| (((uint)(inputBuffer[inputOffset+4*i+3])) << 24);
}
a = _H[0];
b = _H[1];
c = _H[2];
d = _H[3];
// This function was unrolled because it seems to be doubling our performance with current compiler/VM.
// Possibly roll up if this changes.
// ---- Round 1 --------
a += (((c ^ d) & b) ^ d) + (uint) K [0] + buff [0];
a = (a << 7) | (a >> 25);
a += b;
d += (((b ^ c) & a) ^ c) + (uint) K [1] + buff [1];
d = (d << 12) | (d >> 20);
d += a;
c += (((a ^ b) & d) ^ b) + (uint) K [2] + buff [2];
c = (c << 17) | (c >> 15);
c += d;
b += (((d ^ a) & c) ^ a) + (uint) K [3] + buff [3];
b = (b << 22) | (b >> 10);
b += c;
a += (((c ^ d) & b) ^ d) + (uint) K [4] + buff [4];
a = (a << 7) | (a >> 25);
a += b;
d += (((b ^ c) & a) ^ c) + (uint) K [5] + buff [5];
d = (d << 12) | (d >> 20);
d += a;
c += (((a ^ b) & d) ^ b) + (uint) K [6] + buff [6];
c = (c << 17) | (c >> 15);
c += d;
b += (((d ^ a) & c) ^ a) + (uint) K [7] + buff [7];
b = (b << 22) | (b >> 10);
b += c;
a += (((c ^ d) & b) ^ d) + (uint) K [8] + buff [8];
a = (a << 7) | (a >> 25);
a += b;
d += (((b ^ c) & a) ^ c) + (uint) K [9] + buff [9];
d = (d << 12) | (d >> 20);
d += a;
c += (((a ^ b) & d) ^ b) + (uint) K [10] + buff [10];
c = (c << 17) | (c >> 15);
c += d;
b += (((d ^ a) & c) ^ a) + (uint) K [11] + buff [11];
b = (b << 22) | (b >> 10);
b += c;
a += (((c ^ d) & b) ^ d) + (uint) K [12] + buff [12];
a = (a << 7) | (a >> 25);
a += b;
d += (((b ^ c) & a) ^ c) + (uint) K [13] + buff [13];
d = (d << 12) | (d >> 20);
d += a;
c += (((a ^ b) & d) ^ b) + (uint) K [14] + buff [14];
c = (c << 17) | (c >> 15);
c += d;
b += (((d ^ a) & c) ^ a) + (uint) K [15] + buff [15];
b = (b << 22) | (b >> 10);
b += c;
// ---- Round 2 --------
a += (((b ^ c) & d) ^ c) + (uint) K [16] + buff [1];
a = (a << 5) | (a >> 27);
a += b;
d += (((a ^ b) & c) ^ b) + (uint) K [17] + buff [6];
d = (d << 9) | (d >> 23);
d += a;
c += (((d ^ a) & b) ^ a) + (uint) K [18] + buff [11];
c = (c << 14) | (c >> 18);
c += d;
b += (((c ^ d) & a) ^ d) + (uint) K [19] + buff [0];
b = (b << 20) | (b >> 12);
b += c;
a += (((b ^ c) & d) ^ c) + (uint) K [20] + buff [5];
a = (a << 5) | (a >> 27);
a += b;
d += (((a ^ b) & c) ^ b) + (uint) K [21] + buff [10];
d = (d << 9) | (d >> 23);
d += a;
c += (((d ^ a) & b) ^ a) + (uint) K [22] + buff [15];
c = (c << 14) | (c >> 18);
c += d;
b += (((c ^ d) & a) ^ d) + (uint) K [23] + buff [4];
b = (b << 20) | (b >> 12);
b += c;
a += (((b ^ c) & d) ^ c) + (uint) K [24] + buff [9];
a = (a << 5) | (a >> 27);
a += b;
d += (((a ^ b) & c) ^ b) + (uint) K [25] + buff [14];
d = (d << 9) | (d >> 23);
d += a;
c += (((d ^ a) & b) ^ a) + (uint) K [26] + buff [3];
c = (c << 14) | (c >> 18);
c += d;
b += (((c ^ d) & a) ^ d) + (uint) K [27] + buff [8];
b = (b << 20) | (b >> 12);
b += c;
a += (((b ^ c) & d) ^ c) + (uint) K [28] + buff [13];
a = (a << 5) | (a >> 27);
a += b;
d += (((a ^ b) & c) ^ b) + (uint) K [29] + buff [2];
d = (d << 9) | (d >> 23);
d += a;
c += (((d ^ a) & b) ^ a) + (uint) K [30] + buff [7];
c = (c << 14) | (c >> 18);
c += d;
b += (((c ^ d) & a) ^ d) + (uint) K [31] + buff [12];
b = (b << 20) | (b >> 12);
b += c;
// ---- Round 3 --------
a += (b ^ c ^ d) + (uint) K [32] + buff [5];
a = (a << 4) | (a >> 28);
a += b;
d += (a ^ b ^ c) + (uint) K [33] + buff [8];
d = (d << 11) | (d >> 21);
d += a;
c += (d ^ a ^ b) + (uint) K [34] + buff [11];
c = (c << 16) | (c >> 16);
c += d;
b += (c ^ d ^ a) + (uint) K [35] + buff [14];
b = (b << 23) | (b >> 9);
b += c;
a += (b ^ c ^ d) + (uint) K [36] + buff [1];
a = (a << 4) | (a >> 28);
a += b;
d += (a ^ b ^ c) + (uint) K [37] + buff [4];
d = (d << 11) | (d >> 21);
d += a;
c += (d ^ a ^ b) + (uint) K [38] + buff [7];
c = (c << 16) | (c >> 16);
c += d;
b += (c ^ d ^ a) + (uint) K [39] + buff [10];
b = (b << 23) | (b >> 9);
b += c;
a += (b ^ c ^ d) + (uint) K [40] + buff [13];
a = (a << 4) | (a >> 28);
a += b;
d += (a ^ b ^ c) + (uint) K [41] + buff [0];
d = (d << 11) | (d >> 21);
d += a;
c += (d ^ a ^ b) + (uint) K [42] + buff [3];
c = (c << 16) | (c >> 16);
c += d;
b += (c ^ d ^ a) + (uint) K [43] + buff [6];
b = (b << 23) | (b >> 9);
b += c;
a += (b ^ c ^ d) + (uint) K [44] + buff [9];
a = (a << 4) | (a >> 28);
a += b;
d += (a ^ b ^ c) + (uint) K [45] + buff [12];
d = (d << 11) | (d >> 21);
d += a;
c += (d ^ a ^ b) + (uint) K [46] + buff [15];
c = (c << 16) | (c >> 16);
c += d;
b += (c ^ d ^ a) + (uint) K [47] + buff [2];
b = (b << 23) | (b >> 9);
b += c;
// ---- Round 4 --------
a += (((~d) | b) ^ c) + (uint) K [48] + buff [0];
a = (a << 6) | (a >> 26);
a += b;
d += (((~c) | a) ^ b) + (uint) K [49] + buff [7];
d = (d << 10) | (d >> 22);
d += a;
c += (((~b) | d) ^ a) + (uint) K [50] + buff [14];
c = (c << 15) | (c >> 17);
c += d;
b += (((~a) | c) ^ d) + (uint) K [51] + buff [5];
b = (b << 21) | (b >> 11);
b += c;
a += (((~d) | b) ^ c) + (uint) K [52] + buff [12];
a = (a << 6) | (a >> 26);
a += b;
d += (((~c) | a) ^ b) + (uint) K [53] + buff [3];
d = (d << 10) | (d >> 22);
d += a;
c += (((~b) | d) ^ a) + (uint) K [54] + buff [10];
c = (c << 15) | (c >> 17);
c += d;
b += (((~a) | c) ^ d) + (uint) K [55] + buff [1];
b = (b << 21) | (b >> 11);
b += c;
a += (((~d) | b) ^ c) + (uint) K [56] + buff [8];
a = (a << 6) | (a >> 26);
a += b;
d += (((~c) | a) ^ b) + (uint) K [57] + buff [15];
d = (d << 10) | (d >> 22);
d += a;
c += (((~b) | d) ^ a) + (uint) K [58] + buff [6];
c = (c << 15) | (c >> 17);
c += d;
b += (((~a) | c) ^ d) + (uint) K [59] + buff [13];
b = (b << 21) | (b >> 11);
b += c;
a += (((~d) | b) ^ c) + (uint) K [60] + buff [4];
a = (a << 6) | (a >> 26);
a += b;
d += (((~c) | a) ^ b) + (uint) K [61] + buff [11];
d = (d << 10) | (d >> 22);
d += a;
c += (((~b) | d) ^ a) + (uint) K [62] + buff [2];
c = (c << 15) | (c >> 17);
c += d;
b += (((~a) | c) ^ d) + (uint) K [63] + buff [9];
b = (b << 21) | (b >> 11);
b += c;
_H [0] += a;
_H [1] += b;
_H [2] += c;
_H [3] += d;
}
