private static void BlockMix(uint[] B, uint[] X1, uint[] X2, uint[] Y, int r)
{
Array.Copy(B, B.Length - 16, X1, 0, 16);
int num = 0;
int num2 = 0;
int num3 = B.Length >> 1;
for (int i = 2 * r; i > 0; i--)
{
SCrypt.Xor(X1, B, num, X2);
Salsa20Engine.SalsaCore(8, X2, X1);
Array.Copy(X1, 0, Y, num2, 16);
num2 = num3 + num - num2;
num += 16;
}
Array.Copy(Y, 0, B, 0, Y.Length);
}
private static void SMix(uint[] B, int BOff, int N, int r)
{
int num = r * 32;
uint[] array = new uint[16];
uint[] array2 = new uint[16];
uint[] array3 = new uint[num];
uint[] array4 = new uint[num];
uint[][] array5 = new uint[N][];
try
{
Array.Copy(B, BOff, array4, 0, num);
for (int i = 0; i < N; i++)
{
array5[i] = (uint[])array4.Clone();
SCrypt.BlockMix(array4, array, array2, array3, r);
}
uint num2 = (uint)(N - 1);
for (int j = 0; j < N; j++)
{
uint num3 = array4[num - 16] & num2;
SCrypt.Xor(array4, array5[(int)((UIntPtr)num3)], 0, array4);
SCrypt.BlockMix(array4, array, array2, array3, r);
}
Array.Copy(array4, 0, B, BOff, num);
}
finally
{
SCrypt.ClearAll(array5);
SCrypt.ClearAll(new Array[]
{
array4,
array,
array2,
array3
});
}
}
public static byte[] Generate(byte[] P, byte[] S, int N, int r, int p, int dkLen)
{
return(SCrypt.MFcrypt(P, S, N, r, p, dkLen));
}