public string ToSignedHex(string _private)
{
byte[] _basicRaw = RLP.EncodeList(new byte[][] {
RLP.EncodeUInt(this.Nonce),
RLP.EncodeBigInteger(this.GasPrice.ToGWei()),
RLP.EncodeUInt(this.GasLimit),
RLP.EncodeHex(this.Address),
RLP.EncodeBigInteger(this.Value.Integer),
RLP.EncodeString(this.DataHex),
RLP.EncodeInt((int)this.ChainId),
RLP.EncodeString(""),
RLP.EncodeString("")
});
byte[] _basicHashedRaw = new Keccak256().Compute(_basicRaw);
BigInteger _limit = BigInteger.Pow(BigInteger.Parse("2"), 256),
_r = BigInteger.Zero,
_e = BigInteger.Zero,
_s = BigInteger.Zero,
_k = BigInteger.Zero,
_recid = BigInteger.Zero;
while (true)
{
_k = BigInteger.Zero;
if (_k == BigInteger.Zero)
{
byte[] kBytes = new byte[33];
rngCsp.GetBytes(kBytes);
kBytes[32] = 0;
_k = new BigInteger(kBytes);
}
if (_k.IsZero || _k >= Secp256k1.N)
{
continue;
}
var _gk = Secp256k1.G.Multiply(_k);
_r = _gk.X % Secp256k1.N;
_recid = _gk.Y & 1;
if (_r == BigInteger.Zero)
{
throw new Exception("Sign failed because R is Zero.");
}
if (_r >= _limit || _r.Sign == 0)
{
Thread.Sleep(100); continue;
}
_e = Lion.BigNumberPlus.HexToBigInt(BitConverter.ToString(_basicHashedRaw).Replace("-", ""));
_s = ((_e + (_r * Lion.BigNumberPlus.HexToBigInt(_private))) * BigInteger.ModPow(_k, Secp256k1.N - 2, Secp256k1.N)) % Secp256k1.N;
if (_s == BigInteger.Zero)
{
throw new Exception("Sign failed because S is Zero.");
}
if (_s > Secp256k1.HalfN)
{
_recid = _recid ^ 1;
}
if (_s.CompareTo(Secp256k1.HalfN) > 0)
{
_s = Secp256k1.N - _s;
}
if (_s >= _limit || _s.Sign == 0 || _r.ToString("X").StartsWith("0") || _s.ToString("X").StartsWith("0"))
{
Thread.Sleep(100); continue;
}
break;
}
BigInteger _v = BigInteger.Parse(((int)this.ChainId).ToString()) * 2 + _recid + 35;
byte[] _signed = RLP.EncodeList(new byte[][] {
RLP.EncodeUInt(this.Nonce),
RLP.EncodeBigInteger(this.GasPrice.ToGWei()),
RLP.EncodeUInt(this.GasLimit),
RLP.EncodeHex(this.Address),
RLP.EncodeBigInteger(this.Value.Integer),
RLP.EncodeString(this.DataHex),
RLP.EncodeBigInteger(_v),
RLP.EncodeBytes(HexPlus.HexStringToByteArray(_r.ToString("X"))),
RLP.EncodeBytes(HexPlus.HexStringToByteArray(_s.ToString("X")))
});
return(HexPlus.ByteArrayToHexString(_signed).ToLower());
}