public static string GetPublicKey(string PrivateKey)
{
var key = new EthECKey(PrivateKey.HexToByteArray(), true);
var initaddr = new Sha3Keccack().CalculateHash(key.GetPubKeyNoPrefix());
var addr = new byte[initaddr.Length - 12];
Array.Copy(initaddr, 12, addr, 0, initaddr.Length - 12);
string PublicKey = new AddressUtil().ConvertToChecksumAddress(addr.ToHex());
return(PublicKey);
}
public void ShouldSignEncodeTransactionAndRecoverPublicAddress()
{
var privateKey = "b5b1870957d373ef0eeffecc6e4812c0fd08f554b37b233526acc331bf1544f7";
var sendersAddress = "12890d2cce102216644c59daE5baed380d84830c";
var publicKey =
"87977ddf1e8e4c3f0a4619601fc08ac5c1dcf78ee64e826a63818394754cef52457a10a599cb88afb7c5a6473b7534b8b150d38d48a11c9b515dd01434cceb08";
var key = new EthECKey(privateKey.HexToByteArray(), true);
var hash = "test".ToHexUTF8().HexToByteArray();
var signature = key.Sign(hash);
Assert.True(key.Verify(hash, signature));
Assert.Equal(key.GetPubKeyNoPrefix().ToHex(), publicKey);
Assert.Equal(sendersAddress.EnsureHexPrefix().ToLower(), key.GetPublicAddress().EnsureHexPrefix().ToLower());
}
internal string GetStartLowerCase(EthECKey key, int length)
{
byte[] hash = _sha3Keccack.CalculateHash(key.GetPubKeyNoPrefix());
byte[] numArray = new byte[hash.Length - 12];
Array.Copy(hash, 12, numArray, 0, hash.Length - 12);
string address = "0x";
for (int i = 0; i < numArray.Length; i++)
{
address += numArray[i].ToString("x2");
if (address.Length >= length)
{
return(address);
}
}
return(address);
}
private static void Main(string[] args)
{
//string key = EncryptionUtils.GetRandomBytes(32).ToHex();
//string key = "0e549dbcccfbd11e255f6037e1e640efaca0e19966ac77a592fdf06d295952a4";
string key = "7e4670ae70c98d24f3662c172dc510a085578b9ccc717e6c2f4e547edd960a34";
EthECKey privateKey = new EthECKey(key);
byte[] privateKeyBytes = privateKey.GetPrivateKeyAsBytes();
Console.WriteLine("Private key (64 hex digits):\r\n" + privateKeyBytes.ToHex());
byte[] publicKeyBytes = privateKey.GetPubKeyNoPrefix();
Console.WriteLine("Public key uncompressed (2 * 64 hex digits):\r\n" + publicKeyBytes.ToHex());
ECPublicKeyParameters publicKeyParams = new ECKey(privateKeyBytes, true).GetPublicKeyParameters();
string publicKeyCompressed = HashUtils.ToHexCompressed(publicKeyParams.Q);
Console.WriteLine("Public key compressed (65 hex digits):\r\n" + publicKeyCompressed);
byte[] publicAddress = HashUtils.ComputeRIPEMD160(Utils.GetBytes(publicKeyCompressed));
Console.WriteLine("Public address (40 hex digits):\r\n" + publicAddress.ToHex());
}
public static string GetPublicKeyString(EthECKey privateKey)
{
return(privateKey.GetPubKeyNoPrefix().ToHex());
}
