Ejemplos de NBitcoin.BouncyCastle.Math.EC Nat.ShiftDownBit en C# (CSharp)

Ejemplo n.º 1

        private static void InversionStep(uint[] p, uint[] u, int uLen, uint[] x, ref int xc)
        {
            int len   = p.Length;
            int count = 0;

            while (u[0] == 0)
            {
                Nat.ShiftDownWord(uLen, u, 0);
                count += 32;
            }

            {
                int zeroes = GetTrailingZeroes(u[0]);
                if (zeroes > 0)
                {
                    Nat.ShiftDownBits(uLen, u, zeroes, 0);
                    count += zeroes;
                }
            }

            for (int i = 0; i < count; ++i)
            {
                if ((x[0] & 1) != 0)
                {
                    if (xc < 0)
                    {
                        xc += (int)Nat.AddTo(len, p, x);
                    }
                    else
                    {
                        xc += Nat.SubFrom(len, p, x);
                    }
                }

                Debug.Assert(xc == 0 || xc == -1);
                Nat.ShiftDownBit(len, x, (uint)xc);
            }
        }