public static Address GenerateAddress(string _privateKey = "", bool _mainNet = true)
{
_privateKey = _privateKey == "" ? RandomPlus.RandomHex(64) : _privateKey;
BigInteger _privateInt = BigInteger.Parse("0" + _privateKey, System.Globalization.NumberStyles.HexNumber);
byte[] _publicKey = Secp256k1.PrivateKeyToPublicKey(_privateInt);
SHA256Managed _sha256 = new SHA256Managed();
RIPEMD160Managed _ripemd = new RIPEMD160Managed();
byte[] _ripemdHashed = _ripemd.ComputeHash(_sha256.ComputeHash(_publicKey));
byte[] _addedVersion = new byte[_ripemdHashed.Length + 1];
_addedVersion[0] = (byte)(_mainNet ? 0x00 : 0x6f);
Array.Copy(_ripemdHashed, 0, _addedVersion, 1, _ripemdHashed.Length);
byte[] _shaHashed = _sha256.ComputeHash(_sha256.ComputeHash(_addedVersion));
Array.Resize(ref _shaHashed, 4);
byte[] _result = new byte[_addedVersion.Length + _shaHashed.Length];
Array.Copy(_addedVersion, 0, _result, 0, _addedVersion.Length);
Array.Copy(_shaHashed, 0, _result, _addedVersion.Length, _shaHashed.Length);
string _key1 = string.Join("", (_mainNet ? "80" : "ef"), _privateKey);
string _key2 = HexPlus.ByteArrayToHexString(SHA.EncodeSHA256(SHA.EncodeSHA256(HexPlus.HexStringToByteArray(_key1))).Take(4).ToArray());
Address _address = new Address();
_address.Text = Base58.Encode(_result);
_address.PublicKey = HexPlus.ByteArrayToHexString(_publicKey);
_address.PrivateKey = Base58.Encode(_key1 + _key2);
_address.Text = (_mainNet ? (_address.Text.StartsWith("1") ? "" : "1") : "") + _address.Text;
return(_address);
}
public static Address GetLegacyAddress(string _private = "", bool _mainnet = true)
{
_private = _private == "" ? RandomPlus.RandomHex(64) : _private;
BigInteger _privateInt = BigInteger.Parse("0" + _private, NumberStyles.HexNumber);
byte[] _public = Secp256k1.PrivateKeyToPublicKey(_privateInt, false);
RIPEMD160Managed _ripemd = new RIPEMD160Managed();
byte[] _ripemdHashed = _ripemd.ComputeHash(SHA.EncodeSHA256(_public));
byte[] _addedVersion = new byte[_ripemdHashed.Length + 1];
_addedVersion[0] = (byte)(_mainnet ? 0x00 : 0x6f);
Array.Copy(_ripemdHashed, 0, _addedVersion, 1, _ripemdHashed.Length);
byte[] _shaHashed = SHA.EncodeSHA256(SHA.EncodeSHA256(_addedVersion));
Array.Resize(ref _shaHashed, 4);
byte[] _result = new byte[_addedVersion.Length + _shaHashed.Length];
Array.Copy(_addedVersion, 0, _result, 0, _addedVersion.Length);
Array.Copy(_shaHashed, 0, _result, _addedVersion.Length, _shaHashed.Length);
string _key1 = string.Join("", (_mainnet ? "80" : "ef"), _private);
string _key2 = HexPlus.ByteArrayToHexString(SHA.EncodeSHA256(SHA.EncodeSHA256(HexPlus.HexStringToByteArray(_key1))).Take(4).ToArray());
Address _address = new Address
{
Text = Base58.Encode(_result),
Public = HexPlus.ByteArrayToHexString(_public),
Private = Base58.Encode(_key1 + _key2)
};
return(_address);
}
public static Address Generate(string _privateKey = "")
{
Address _address = new Address();
_address.Private = _privateKey == "" ? RandomPlus.RandomHex(64) : _privateKey;
_address.Public = HexPlus.ByteArrayToHexString(Secp256k1.PrivateKeyToPublicKey(_address.Private));
_address.Public = _address.Public.Substring(2);
Keccak256 _keccakHasher = new Keccak256();
string _hexAddress = _keccakHasher.ComputeHashByHex(_address.Public);
_address.Text = "0x" + _hexAddress.Substring(_hexAddress.Length - 40);
return(_address);
}
public static Address GetMultisignAddress(string[] _privates = null, int _required = 1, bool _mainnet = true)
{
if (_privates == null)
{
_privates = new string[1];
}
if (_privates.Length < _required)
{
throw new ArgumentException("Key count lower then require count");
}
for (int i = 0; i < _privates.Length; i++)
{
_privates[i] = string.IsNullOrWhiteSpace(_privates[i]) ? RandomPlus.RandomHex(64) : _privates[i];
}
string _publicScript = Privates2PublicScript(_privates, _required);
byte[] _signArray = HexPlus.HexStringToByteArray(_publicScript);
RIPEMD160Managed _ripemd = new RIPEMD160Managed();
byte[] _ripemdHashed = _ripemd.ComputeHash(SHA.EncodeSHA256(_signArray));
byte[] _addedVersion = new byte[_ripemdHashed.Length + 1];
_addedVersion[0] = (byte)(_mainnet ? (byte)5 : (byte)196);
Array.Copy(_ripemdHashed, 0, _addedVersion, 1, _ripemdHashed.Length);
byte[] _shaHashed = SHA.EncodeSHA256(SHA.EncodeSHA256(_addedVersion));
Array.Resize(ref _shaHashed, 4);
byte[] _result = new byte[_addedVersion.Length + _shaHashed.Length];
Array.Copy(_addedVersion, 0, _result, 0, _addedVersion.Length);
Array.Copy(_shaHashed, 0, _result, _addedVersion.Length, _shaHashed.Length);
for (int i = 0; i < _privates.Length; i++)
{
_privates[i] = Private2Wif(_privates[i], _mainnet, true);
}
Address _address = new Address
{
Text = Base58.Encode(_result),
Public = _publicScript,
Privates = _privates
};
return(_address);
}
public static string SignHex(string _hex, string _wif)
{
BigInteger _k = BigNumberPlus.HexToBigInt(RandomPlus.RandomHex());
Encrypt.ECPoint _gk = Secp256k1.G.Multiply(_k);
BigInteger _r = _gk.X;
BigInteger _e = BigNumberPlus.HexToBigInt(_hex);
string _private = Address.Wif2Private(_wif, out _, out bool _compressed);
BigInteger _d = BigNumberPlus.HexToBigInt(_private);
BigInteger _s = ((_r * _d + _e) * _k.ModInverse(Secp256k1.N)) % Secp256k1.N;
if (_s.CompareTo(Secp256k1.HalfN) > 0)
{
_s = Secp256k1.N - _s;
}
List <byte> _rbytes = _r.ToByteArray().Reverse().ToList();
List <byte> _sbytes = _s.ToByteArray().Reverse().ToList();
List <byte> _result = new List <byte>();
BigInteger _rsLength = _rbytes.Count() + _sbytes.Count() + 4;
_result.Add(0x30);
_result.AddRange(_rsLength.ToByteArray());
_result.Add(0x02);
_result.AddRange(((BigInteger)_rbytes.Count()).ToByteArray());
_result.AddRange(_rbytes.ToArray());
_result.Add(0x02);
_result.AddRange(((BigInteger)_sbytes.Count()).ToByteArray());
_result.AddRange(_sbytes.ToArray());
_result.Add(0x01);
BigInteger _publicBytesLength = BigNumberPlus.HexToBigInt(Address.Private2Public(_private, false, _compressed)).ToByteArray().Length;
_result.AddRange(_publicBytesLength.ToByteArray());
_result.InsertRange(0, ((BigInteger)(_result.Count - 1)).ToByteArray());
return(HexPlus.ByteArrayToHexString(_result.ToArray()));
}