// Used in the message schedule
private static long _Sigma1(long x)
{
// S19(x) ^ S61(x) ^ R6(x)
return(MathR.Rotate(x, 19) ^ MathR.Rotate(x, 61) ^ (x >> 6));
}
/// <summary>
/// Compute a SHA512 hash
/// </summary>
/// <returns></returns>
public static string Sha512(byte[] msg)
{
// Initial values
unchecked {
long[] h =
{
0x6a09e667f3bcc908, (long)0xbb67ae8584caa73b, 0x3c6ef372fe94f82b, (long)0xa54ff53a5f1d36f1,
0x510e527fade682d1, (long)0x9b05688c2b3e6c1f, 0x1f83d9abfb41bd6b, 0x5be0cd19137e2179
};
long[] k =
{
0x428a2f98d728ae22, 0x7137449123ef65cd, (long)0xb5c0fbcfec4d3b2f, (long)0xe9b5dba58189dbbc, 0x3956c25bf348b538,
0x59f111f1b605d019, (long)0x923f82a4af194f9b, (long)0xab1c5ed5da6d8118, (long)0xd807aa98a3030242, 0x12835b0145706fbe,
0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2, 0x72be5d74f27b896f, (long)0x80deb1fe3b1696b1, (long)0x9bdc06a725c71235,
(long)0xc19bf174cf692694, (long)0xe49b69c19ef14ad2, (long)0xefbe4786384f25e3, 0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65,
0x2de92c6f592b0275, 0x4a7484aa6ea6e483, 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5, (long)0x983e5152ee66dfab,
(long)0xa831c66d2db43210, (long)0xb00327c898fb213f, (long)0xbf597fc7beef0ee4, (long)0xc6e00bf33da88fc2, (long)0xd5a79147930aa725,
0x06ca6351e003826f, 0x142929670a0e6e70, 0x27b70a8546d22ffc, 0x2e1b21385c26c926, 0x4d2c6dfc5ac42aed,
0x53380d139d95b3df, 0x650a73548baf63de, 0x766a0abb3c77b2a8, (long)0x81c2c92e47edaee6, (long)0x92722c851482353b,
(long)0xa2bfe8a14cf10364, (long)0xa81a664bbc423001, (long)0xc24b8b70d0f89791, (long)0xc76c51a30654be30, (long)0xd192e819d6ef5218,
(long)0xd69906245565a910, (long)0xf40e35855771202a, 0x106aa07032bbd1b8, 0x19a4c116b8d2d0c8, 0x1e376c085141ab53,
0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8, 0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb, 0x5b9cca4f7763e373,
0x682e6ff3d6b2b8a3, 0x748f82ee5defb2fc, 0x78a5636f43172f60, (long)0x84c87814a1f0ab72, (long)0x8cc702081a6439ec,
(long)0x90befffa23631e28, (long)0xa4506cebde82bde9, (long)0xbef9a3f7b2c67915, (long)0xc67178f2e372532b, (long)0xca273eceea26619c,
(long)0xd186b8c721c0c207, (long)0xeada7dd6cde0eb1e, (long)0xf57d4f7fee6ed178, 0x06f067aa72176fba, 0x0a637dc5a2c898a6,
0x113f9804bef90dae, 0x1b710b35131c471b, 0x28db77f523047d84, 0x32caab7b40c72493, 0x3c9ebe0a15c9bebc,
0x431d67c49c100d4c, 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a, 0x5fcb6fab3ad6faec, 0x6c44198c4a475817
};
msg = ShaPad(msg);
long[,] chunks = ShaBreak(msg);
long[,] message = ComputeMessage(chunks);
for (int i = 0; i < chunks.GetLength(0); i++)
{
long a = h[0];
long b = h[1];
long c = h[2];
long d = h[3];
long e = h[4];
long f = h[5];
long g = h[6];
long _h = h[7];
for (int j = 0; j < 80; j++)
{
long t1 = _h + MathR.Sigma1(e) + MathR.Ch(e, f, g) + k[j] + message[i, j];
long t2 = MathR.Sigma0(a) + MathR.Maj(a, b, c);
_h = g;
g = f;
f = e;
e = d + t1;
d = c;
c = b;
b = a;
a = t1 + t2;
}
h[0] += a;
h[1] += b;
h[2] += c;
h[3] += d;
h[4] += e;
h[5] += f;
h[6] += g;
h[7] += _h;
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < 8; i++)
{
sb.Append(h[i].ToString("X"));
}
return(sb.ToString());
}
}
// Used in the message schedule
private static long _Sigma0(long x)
{
// S1(x) ^ S8(x) ^ R7(x)
return(MathR.Rotate(x, 1) ^ MathR.Rotate(x, 8) ^ (x >> 7));
}
