protected override void Compress(IQmhHukState hashState, byte[] buffer)
{
// Init Message Schedule array (W)
UInt32[] W = new UInt32[56];
for (int t = 0, j = 0; t < 16; ++t, j += 4)
{
W[t] = (UInt32)((buffer[j] << 24) | (buffer[j + 1] << 16) | (buffer[j + 2] << 8) | (buffer[j + 3]));
}
for (int t = 16; t < 56; ++t)
{
W[t] = Wsigma1(W[t - 2]) + W[t - 7] + Wsigma0(W[t - 15]) + W[t - 16];
}
QmhHuk256State state = (QmhHuk256State)hashState;
// Init working variables
UInt32 a = state.H[0];
UInt32 b = state.H[1];
UInt32 c = state.H[2];
UInt32 d = state.H[3];
UInt32 e = state.H[4];
UInt32 f = state.H[5];
UInt32 g = state.H[6];
UInt32 h = state.H[7];
// 56 rounds
for (int r = 0; r < 56; ++r)
{
UInt32 T1 = h + Sigma1(e) + Choice(e, f, g) + K[r] + W[r];
UInt32 T2 = Sigma0(a) + Majority(a, b, c);
UInt32 T3 = a + Sigma1(d) + Choice(c, b, a) + K[r] + W[r];
UInt32 T4 = Sigma0(h) + Majority(h, g, f);
h = g;
g = f ^ T1;
f = e;
e = T3 + T4;
d = c;
c = b ^ T3;
b = a;
a = T1 + T2;
}
// Update hash state
state.H[0] ^= a;
state.H[1] ^= b;
state.H[2] ^= c;
state.H[3] ^= d;
state.H[4] ^= e;
state.H[5] ^= f;
state.H[6] ^= g;
state.H[7] ^= h;
}
protected override byte[] FinalHash(IQmhHukState hashState)
{
var size = 8;
if (this._bitLen == 224)
{
size = 7;
}
byte[] result = new byte[size * 4];
QmhHuk256State state = (QmhHuk256State)hashState;
for (int h = 0, p = 0; h < size; h++, p += 4)
{
var hState = state.H[h];
result[p + 0] = (byte)(hState >> 24);
result[p + 1] = (byte)(hState >> 16);
result[p + 2] = (byte)(hState >> 8);
result[p + 3] = (byte)(hState);
}
return(result);
}
/// <summary>
/// Init hsha state
/// </summary>
/// <param name="hashState"></param>
protected override void InitState(out IQmhHukState hashState)
{
if (this._bitLen == 256)
{
hashState = new QmhHuk256State()
{
H = new UInt32[] { // 419..457
0x78307697, 0x84AE4B7C, 0xC2B2B755, 0xCF03D20E,
0xF3CBB117, 0x79C450F6, 0x308AF161, 0x60A7A998
}
}
}
;
else
{
hashState = new QmhHuk256State()
{
H = new UInt32[] { // 461..503
0x788D9812, 0x84769B42, 0x9C34F062, 0xE2D564C4,
0xAE469BE4, 0x2894C107, 0x569B58C6, 0x6D7B3939
}
}
};
}