public string Hash(string message)
{
var hasher = new Nethereum.Util.Sha3Keccack();
var hash = hasher.CalculateHash(message);
return(hash);
}
public static string SignMessage(Dictionary <string, object> message)
{
var web3 = new Nethereum.Web3.Web3();
var stringed = Helpers.StringifyDictionary(message);
var hashed = Nethereum.Web3.Web3.Sha3(stringed);
var salted = new Nethereum.Util.Sha3Keccack().CalculateHash(hashed).HexToByteArray();
return(string.Empty);
}
/// <summary>
/// Returns HoardID that signed this transaction
/// </summary>
/// <param name="signatureStr"></param>
/// <param name="rlpEncodedTransaction"></param>
/// <returns>Signer of this transaction</returns>
public static HoardID RecoverHoardIdFromTransaction(string signatureStr, byte[] rlpEncodedTransaction)
{
if (string.IsNullOrEmpty(signatureStr))
{
return(null);
}
var signature = EthECDSASignatureFactory.ExtractECDSASignature(signatureStr);
var rawHash = new Nethereum.Util.Sha3Keccack().CalculateHash(rlpEncodedTransaction);
return(new HoardID(EthECKey.RecoverFromSignature(signature, rawHash).GetPublicAddress()));
}
public IActionResult Validate(Guid token, string signature)
{
var message = Encoding.ASCII.GetBytes(token.ToString());
var prefix = Encoding.ASCII.GetBytes("\u0019Ethereum Signed Message:\n" + message.Length.ToString());
var fullmessage = prefix.Concat(message).ToArray();
var hash = new Nethereum.Util.Sha3Keccack().CalculateHash(fullmessage);
var sigParams = Nethereum.Signer.MessageSigner.ExtractEcdsaSignature(signature);
var publicKey = Nethereum.Signer.EthECKey.RecoverFromSignature(sigParams, hash);
var addr = publicKey.GetPublicAddress();
if (!_data.ValidateAccessToken(token, addr.ToLower()))
{
return(Unauthorized());
}
return(Ok(new { success = true }));
}
//Referenced By: https://github.com/MetacoSA/NBitcoin/issues/565
public string GenerateAddress(byte[] pubKeyBytes)
{
var ETH_publickKey = new PubKey(pubKeyBytes);
byte[] byte_ETH_publicKey = ETH_publickKey.Decompress().ToBytes();
var PubKeyNoPrefix = new byte[byte_ETH_publicKey.Length - 1];
Array.Copy(byte_ETH_publicKey, 1, PubKeyNoPrefix, 0, PubKeyNoPrefix.Length);
var initaddr = new Nethereum.Util.Sha3Keccack().CalculateHash(PubKeyNoPrefix);
var addr = new byte[initaddr.Length - 12];
Array.Copy(initaddr, 12, addr, 0, initaddr.Length - 12);
var hex_addr = BitConverter.ToString(addr).Replace("-", "");
string public_address = new Nethereum.Util.AddressUtil().ConvertToChecksumAddress(hex_addr);
return(public_address);
}
public static String GetETHLedgerAddress(ExtPubKey pubkey, int index)
{
var pkd = pubkey;
PubKey ETH_publickKey = pkd.PubKey;
byte[] byte_ETH_publicKey = ETH_publickKey.Decompress().ToBytes();
var PubKeyNoPrefix = new byte[byte_ETH_publicKey.Length - 1];
Array.Copy(byte_ETH_publicKey, 1, PubKeyNoPrefix, 0, PubKeyNoPrefix.Length);
var initaddr = new Nethereum.Util.Sha3Keccack().CalculateHash(PubKeyNoPrefix);
var addr = new byte[initaddr.Length - 12];
Array.Copy(initaddr, 12, addr, 0, initaddr.Length - 12);
var hex_addr = BitConverter.ToString(addr).Replace("-", "");
string public_address = new Nethereum.Util.AddressUtil().ConvertToChecksumAddress(hex_addr);
return(public_address);
}