private void AddInputs(Transaction transaction, ExtPubKey pubKey, List <Coin> coins, int addressNumber, ref int index, Money money)
{
Base58CheckEncoder base58CheckEncoder = new Base58CheckEncoder();
var bytes = base58CheckEncoder.DecodeData(pubKey.GetWif(Network.Main).ToString());
string hex = BitConverter.ToString(bytes).Replace("-", "").ToLower();
Money spentMoney = Money.Zero;
for (int i = 0; i < coins.Count; i++)
{
transaction.AddInput(new TxIn(coins[i].Outpoint));
var s = "01ff4c53ff" + hex + "0000"
+ (addressNumber > 9 ? addressNumber.ToString() : "0" + addressNumber) + "00";
transaction.Inputs[i + index].ScriptSig = new Script(s);
spentMoney += coins[i].Amount;
if (spentMoney >= money)
{
if (spentMoney - money > 0)
{
transaction.AddOutput(spentMoney - money, pubKey.Derive(0).Derive((uint)addressNumber).PubKey.Hash);
}
index = i + 1;
return;
}
}
index = coins.Count;
}
static Encoders()
{
ASCII = new ASCIIEncoder();
Hex = new HexEncoder();
Base58 = new Base58Encoder();
Base58Check = new Base58CheckEncoder();
Base64 = new Base64Encoder();
}
static Encoders()
{
Base64 = new Base64Encoder();
Base58Check = new Base58CheckEncoder();
Base58 = new Base58Encoder();
Hex = new HexEncoder();
ASCII = new ASCIIEncoder();
}
private Key PrivateKeyParse(string privateKey)
{
byte[] privKeyPrefix = new byte[] { (128) };
byte[] prefixedPrivKey = Helper.Concat(privKeyPrefix, Encoders.Hex.DecodeData(privateKey));
byte[] privKeySuffix = new byte[] { (1) };
byte[] suffixedPrivKey = Helper.Concat(prefixedPrivKey, privKeySuffix);
Base58CheckEncoder base58Check = new Base58CheckEncoder();
string privKeyEncoded = base58Check.EncodeData(suffixedPrivKey);
return(Key.Parse(privKeyEncoded, Network.Main));
}
public void CreateFromHash()
{
using (var sha = new SHA256Managed())
{
byte[] privateKey = sha.ComputeHash(Encoding.UTF8.GetBytes("some_random_text"));
byte[] prefixedPrivKey = Helper.Concat(new byte[] { (128) }, privateKey);
Base58CheckEncoder base58Check = new Base58CheckEncoder();
string privKeyEncoded = base58Check.EncodeData(prefixedPrivKey);
Console.WriteLine($"Private key (Base58): {privKeyEncoded}");
Key privKey = Key.Parse(privKeyEncoded, Network.Main);
}
}
public void GetDecimalPrivFromWif()
{
Base58CheckEncoder base58Check = new Base58CheckEncoder();
byte[] privKeyPrefixed = base58Check.DecodeData("5KV7hnn73NJCumzmviZ6UpjC68dw86r3WSG4DvuaTgw4968rZuo");
Assert.AreEqual(128, privKeyPrefixed[0]); // 0x80
// Dropping first byte
byte[] privateKey = privKeyPrefixed.Skip(1).ToArray();
// Encode to hex to print
string privHex = Encoders.Hex.EncodeData(privateKey);
Assert.AreEqual("dbdd1a034b5ac2f2cfa1ef09daf032dee9015586427d4cbd6f810a32ea45173a", privHex);
}
private void SetData(byte[] vchData)
{
this.vchData = vchData;
this.vchVersion = _Network.GetVersionBytes(Type);
if (_Network.useGroestlHash == false)
{
wifData = Encoders.Base58Check.EncodeData(vchVersion.Concat(vchData).ToArray());
}
else
{
//Using Groestl hashing
wifData = Base58CheckEncoder.EncodeGroestlData(vchVersion.Concat(vchData).ToArray());
}
if (!IsValid)
{
throw new FormatException("Invalid " + this.GetType().Name);
}
}
private static CoinKeyPair _P2PkhGenerator()
{
regenerate:
var priv = _NewPrivKey();
var privKey = priv.Item1;
var wif = priv.Item2;
var pub = _PrivToPubKey(privKey);
var pkHash = new Ripemd160Managed().ComputeHash(new SHA256Managed().ComputeHash(pub));
var pkHashVersioned = new byte[20 + 1];
pkHashVersioned[0] = 0x00;
Array.Copy(pkHash, 0, pkHashVersioned, 1, 20);
var addr = new Base58CheckEncoder().Encode(pkHashVersioned);
// Some addresses ends up to be 26 chars while most are 27 chars long.
// For stability reason, 26 chars long addresses are filtered out and the program would redo the generation.
if (addr.Length != 27)
{
goto regenerate;
}
return(new CoinKeyPair(wif, addr));
}
private static byte[] DecodeBase58Check(string base58encoded)
{
Base58CheckEncoder cj = new Base58CheckEncoder();
return(cj.DecodeData(base58encoded));
}
public string CreateOutTransactionElectrum(string redeemScript, string xpubkey1, string xpubkey2, decimal amount1, decimal amount2)
{
if (amount1 <= 0m && amount2 <= 0m)
{
throw new ArgumentException("Amount is less or equal zero");
}
Script scriptPubKey;
try
{
scriptPubKey = new Script(redeemScript);
}
catch (Exception e)
{
throw new ArgumentException("Redeem script is incorrect");
}
ExtPubKey xpubKey1;
ExtPubKey xpubKey2;
try
{
xpubKey1 = ExtPubKey.Parse(xpubkey1, Network.Main);
xpubKey2 = ExtPubKey.Parse(xpubkey2, Network.Main);
}
catch (Exception e)
{
throw new ArgumentException("Extended public key is incorrect");
}
decimal estimateFeeSize = 400m;
var fee = this.Fee(estimateFeeSize);
if (fee == null)
{
throw new Exception("Cannot get fee");
}
var pubKeys = scriptPubKey.GetDestinationPublicKeys();
var index1 = this.FindPubKey(xpubKey1, pubKeys[0]);
var index2 = this.FindPubKey(xpubKey2, pubKeys[1]);
var unspentCoins = GetUnspentCoins(scriptPubKey);
var t = new Transaction();
t.AddOutput(Money.Coins(amount1) - fee / 2, pubKeys[0].Hash);
t.AddOutput(Money.Coins(amount2) - fee / 2, pubKeys[1].Hash);
Base58CheckEncoder base58CheckEncoder = new Base58CheckEncoder();
var bytes1 = base58CheckEncoder.DecodeData(xpubKey1.GetWif(Network.Main).ToString());
string hex1 = BitConverter.ToString(bytes1).Replace("-", "").ToLower();
var bytes2 = base58CheckEncoder.DecodeData(xpubKey2.GetWif(Network.Main).ToString());
string hex2 = BitConverter.ToString(bytes2).Replace("-", "").ToLower();
// special script sig in electrum have to contain these magic vars
var s = "0001ff01ff4cad524c53ff" + hex1 + "0000"
+ (index1 > 9 ? index1.ToString() : "0" + index1) + "00" + "4c53ff" + hex2 + "0000"
+ (index2 > 9 ? index2.ToString() : "0" + index2) + "00" + "52ae";
int i = 0;
Money spendMoney = Money.Zero;
foreach (var coin in unspentCoins)
{
t.AddInput(new TxIn(coin.Key.Outpoint));
t.Inputs[i].ScriptSig = new Script(s);
i++;
spendMoney += coin.Key.Amount;
if (spendMoney >= Money.Coins(amount1) + Money.Coins(amount2))
{
if (spendMoney > Money.Coins(amount1) + Money.Coins(amount2))
{
t.AddOutput(spendMoney - (Money.Coins(amount1) + Money.Coins(amount2)), scriptPubKey.Hash);
}
spendMoney = null;
break;
}
}
if (spendMoney == null)
{
return(t.ToHex().Replace("b64cb40001ff01ff4cad524c53ff", "b40001ff01ff4cad524c53ff"));
}
return(null);
}
public void CreateManually()
{
Console.WriteLine();
// Priv key length
int KEY_SIZE = 32;
// Max priv key value
// 115792089237316195423570985008687907852837564279074904382605163141518161494337
uint256 N = uint256.Parse("fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141");
// Randomizer
Random rand = new Random();
byte[] privateKey = new byte[KEY_SIZE];
// Generate a valid random value
uint256 candidateKey;
do
{
rand.NextBytes(privateKey);
candidateKey = new uint256(privateKey, false);
} while (!(candidateKey > 0 && candidateKey < N));
Console.WriteLine($"Private key (hex) : { Encoders.Hex.EncodeData(privateKey) }");
// Base58
byte[] privKeyPrefix = new byte[] { (128) }; // Base58 prefix for private key, 0x80 in hex
byte[] prefixedPrivKey = Helper.Concat(privKeyPrefix, privateKey);
Base58CheckEncoder base58Check = new Base58CheckEncoder();
string privKeyEncoded = string.Empty;
{
privKeyEncoded = base58Check.EncodeData(prefixedPrivKey);
}
// or
{
var hash1 = NBitcoin.Crypto.Hashes.SHA256(prefixedPrivKey);
var hash2 = NBitcoin.Crypto.Hashes.SHA256(hash1);
var checksum = hash2.Take(4).ToArray();
var prefixedPrivKeyChecksum = Helper.Concat(prefixedPrivKey, checksum);
Base58Encoder base58 = new Base58Encoder();
privKeyEncoded = base58.EncodeData(prefixedPrivKeyChecksum);
}
Assert.DoesNotThrow(() => {
Key.Parse(privKeyEncoded, Network.Main);
});
Console.WriteLine($"Private key (Base58) : {privKeyEncoded}");
// Compressed private key
byte[] privKeySuffix = new byte[] { (1) }; // Suffix for compressed private key, 0x01 in hex
byte[] suffixedPrivKey = Helper.Concat(prefixedPrivKey, privKeySuffix);
string compressedPrivKeyEncoded = base58Check.EncodeData(suffixedPrivKey);
Assert.DoesNotThrow(() => {
Key.Parse(compressedPrivKeyEncoded, Network.Main);
});
Console.WriteLine($"Private key (Comp.) : {compressedPrivKeyEncoded}");
// P2PK private key
byte[] p2pkhPrivKeySuffix = new byte[] { (16) }; // 0x10 in hex
byte[] suffixedP2pkhPrivKey = Helper.Concat(prefixedPrivKey, p2pkhPrivKeySuffix);
string compressedP2pkhPrivKeyEncoded = base58Check.EncodeData(suffixedP2pkhPrivKey);
Console.WriteLine($"Private key (P2PKH) : {compressedP2pkhPrivKeyEncoded}");
}
public ByteBase58CheckConverter() : base()
{
_base58CheckEncoder = new Base58CheckEncoder();
_network = Network.Main;
}
