public static string GetHash(string timeStamp, string lastHash, string data, long nonce, long difficulty)
{
string dataToHash = timeStamp + lastHash + data + nonce + difficulty;
string hash = Convert.ToBase64String(ChainUtility.Hash(dataToHash));
return(hash);
}
/// <summary>
/// Signs a transaction to be sent
/// 1. Build a transaction input
/// 2. Generate the hash of the TxOutputs for the transaction
/// 3. Sign the hash generated with the wallet's private key
/// </summary>
/// <param name="transaction"></param>
/// <param name="senderWallet"></param>
/// <returns></returns>
public void SignTransaction(Wallet senderWallet)
{
UgoChain.Features.Wallet.TxInput txInput = new UgoChain.Features.Wallet.TxInput();
byte[] hash = ChainUtility.Hash(JsonConvert.SerializeObject(TxOutputs));
txInput.TimeStamp = Helper.ConvertToUnixTimeStamp(DateTime.Now).ToString();
txInput.Address = senderWallet.PublicKey.Key;
txInput.Amount = senderWallet.Balance;
txInput.Signature = senderWallet.SignHash(hash);
Input = txInput;
}
/// <summary>
/// Veify signature using TxInput data-Note the TxInput is build from the wallet object
/// </summary>
/// <returns></returns>
public bool VerifyTransaction()
{
byte[] publicKey = Convert.FromBase64String(Input.Address);
byte[] dataHashToVerify = ChainUtility.Hash(JsonConvert.SerializeObject(TxOutputs));
return(ChainUtility.VerifySignature(publicKey, Input.Signature, dataHashToVerify));
}