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)); }