private static void RP(uint[] nc, uint[] d1, uint[] e1, uint[] f1, uint[] t)
{
Nat224.Copy(nc, f1);
uint[] array = Nat224.Create();
uint[] array2 = Nat224.Create();
for (int i = 0; i < 7; i++)
{
Nat224.Copy(d1, array);
Nat224.Copy(e1, array2);
int num = 1 << i;
while (--num >= 0)
{
SecP224R1FieldElement.RS(d1, e1, f1, t);
}
SecP224R1FieldElement.RM(nc, array, array2, d1, e1, f1, t);
}
}
private static bool TrySqrt(uint[] nc, uint[] r, uint[] t)
{
uint[] array = Nat224.Create();
Nat224.Copy(r, array);
uint[] array2 = Nat224.Create();
array2[0] = 1u;
uint[] array3 = Nat224.Create();
SecP224R1FieldElement.RP(nc, array, array2, array3, t);
uint[] array4 = Nat224.Create();
uint[] z = Nat224.Create();
for (int i = 1; i < 96; i++)
{
Nat224.Copy(array, array4);
Nat224.Copy(array2, z);
SecP224R1FieldElement.RS(array, array2, array3, t);
if (Nat224.IsZero(array))
{
Mod.Invert(SecP224R1Field.P, z, t);
SecP224R1Field.Multiply(t, array4, t);
return(true);
}
}
return(false);
}
