protected override bool CheckScriptSigCore(Script scriptSig, Op[] scriptSigOps, Script scriptPubKey, Op[] scriptPubKeyOps)
{
if (!scriptSig.IsPushOnly)
{
return(false);
}
if (scriptSigOps[0].Code != OpcodeType.OP_0)
{
return(false);
}
if (scriptSigOps.Length == 1)
{
return(false);
}
if (!scriptSigOps.Skip(1).All(s => TransactionSignature.ValidLength(s.PushData.Length) || s.Code == OpcodeType.OP_0))
{
return(false);
}
if (scriptPubKeyOps != null)
{
if (!CheckScriptPubKeyCore(scriptPubKey, scriptPubKeyOps))
{
return(false);
}
var sigCountExpected = scriptPubKeyOps[0].GetValue();
return(sigCountExpected == scriptSigOps.Length + 1);
}
return(true);
}
protected override bool CheckScriptSigCore(Network network, Script scriptSig, Op[] scriptSigOps, Script scriptPubKey, Op[] scriptPubKeyOps)
{
if (!scriptSig.IsPushOnly)
{
return(false);
}
if (scriptSigOps[0].Code != OpcodeType.OP_0)
{
return(false);
}
if (scriptSigOps.Length == 1)
{
return(false);
}
if (!scriptSigOps.Skip(1).All(s => TransactionSignature.ValidLength(s.PushData.Length) || s.Code == OpcodeType.OP_0))
{
return(false);
}
if (scriptPubKeyOps != null)
{
if (!CheckScriptPubKeyCore(scriptPubKey, scriptPubKeyOps))
{
return(false);
}
(PubKey[] pubKeys, int sigCountExpected) = network.Federations.GetFederation(scriptPubKeyOps[0].PushData).GetFederationDetails();
return(sigCountExpected == scriptSigOps.Length + 1);
}
return(true);
}
bool CheckWitScriptCore(Network network, WitScript witScript)
{
return(witScript.PushCount == 2 &&
(witScript[0].Length == 1 && witScript[0][0] == 0 ||
TransactionSignature.IsValid(network, witScript[0], ScriptVerify.None)) &&
PubKey.Check(witScript[1], false));
}
protected override bool CheckScriptSigCore(Network network, Script scriptSig, Op[] scriptSigOps, Script scriptPubKey, Op[] scriptPubKeyOps)
{
Op[] ops = scriptSigOps;
if (ops.Length != 1)
{
return(false);
}
return(ops[0].PushData != null && TransactionSignature.IsValid(network, ops[0].PushData));
}
public Script GenerateScriptSig(TransactionSignature signature, PubKey publicKey)
{
if(publicKey == null)
throw new ArgumentNullException("publicKey");
return new Script(
signature == null ? OpcodeType.OP_0 : Op.GetPushOp(signature.ToBytes()),
Op.GetPushOp(publicKey.ToBytes())
);
}
public override bool Equals(object obj)
{
TransactionSignature item = obj as TransactionSignature;
if (item == null)
{
return(false);
}
return(Id.Equals(item.Id));
}
public WitScript GenerateWitScript(TransactionSignature signature, PubKey publicKey)
{
if (publicKey == null)
{
throw new ArgumentNullException(nameof(publicKey));
}
return(new WitScript(
signature == null ? OpcodeType.OP_0 : Op.GetPushOp(signature.ToBytes()),
Op.GetPushOp(publicKey.ToBytes())
));
}
protected override bool CheckScriptSigCore(Network network, Script scriptSig, Op[] scriptSigOps, Script scriptPubKey, Op[] scriptPubKeyOps)
{
Op[] ops = scriptSigOps;
if (ops.Length != 2)
{
return(false);
}
return(ops[0].PushData != null &&
((ops[0].Code == OpcodeType.OP_0) || TransactionSignature.IsValid(network, ops[0].PushData, ScriptVerify.None)) &&
ops[1].PushData != null && PubKey.Check(ops[1].PushData, false));
}
protected override bool CheckScriptSigCore(Script scriptSig, Op[] scriptSigOps, Script?scriptPubKey, Op[]?scriptPubKeyOps)
{
var ops = scriptSigOps;
if (ops.Length != 2)
{
return(false);
}
return(ops[0].PushData != null &&
((ops[0].Code == OpcodeType.OP_0) || TransactionSignature.IsValid(ops[0].PushData, ScriptVerify.DerSig)) &&
ops[1].PushData != null && PubKey.SanityCheck(ops[1].PushData));
}
public Script GenerateScriptSig(TransactionSignature signature, PubKey publicKey)
{
if (signature == null)
{
throw new ArgumentNullException("signature");
}
if (publicKey == null)
{
throw new ArgumentNullException("publicKey");
}
return(new Script(
Op.GetPushOp(signature.ToBytes()),
Op.GetPushOp(publicKey.ToBytes())
));
}
public TransactionSignature ExtractScriptSigParameters(Script scriptSig)
{
var ops = scriptSig.ToOps().ToArray();
if(!CheckScriptSigCore(scriptSig, ops, null, null))
return null;
var data = ops[0].PushData;
if(!TransactionSignature.ValidLength(data.Length))
return null;
try
{
return new TransactionSignature(data);
}
catch(FormatException)
{
return null;
}
}
public TransactionSignature ExtractScriptSigParameters(Network network, Script scriptSig)
{
Op[] ops = scriptSig.ToOps().ToArray();
if (!CheckScriptSigCore(network, scriptSig, ops, null, null))
{
return(null);
}
byte[] data = ops[0].PushData;
if (!TransactionSignature.ValidLength(data.Length))
{
return(null);
}
try
{
return(new TransactionSignature(data));
}
catch (FormatException)
{
return(null);
}
}
public static string GetHexSignedTransaction(TransactionToSign txToSign)
{
var walletPrivateKey = ConfigurationManager.AppSettings[METACO_ENV_WALLET_PRIVATE_KEY_HEX_NAME];
var key = new Key(Encoders.Hex.DecodeData(walletPrivateKey));
var scriptPubKey = PayToPubkeyHashTemplate.Instance.GenerateScriptPubKey(key.PubKey);
var tx = new Transaction(Encoders.Hex.DecodeData(txToSign.Raw));
foreach(var inputsToSign in txToSign.InputsToSign)
{
var sigHash = tx.GetSignatureHash(scriptPubKey, inputsToSign.Index);
var sig = key.Sign(sigHash);
var txSign = new TransactionSignature(sig, SigHash.All);
var inputScript = PayToPubkeyHashTemplate.Instance.GenerateScriptSig(txSign, key.PubKey);
tx.Inputs[inputsToSign.Index].ScriptSig = inputScript;
Assert.True(Script.VerifyScript(scriptPubKey, tx, inputsToSign.Index));
}
return tx.ToHex();
}
public Script GenerateScriptSig(TransactionSignature signature, PubKey publicKey)
{
if(signature == null)
throw new ArgumentNullException("signature");
if(publicKey == null)
throw new ArgumentNullException("publicKey");
return new Script(
Op.GetPushOp(signature.ToBytes()),
Op.GetPushOp(publicKey.ToBytes())
);
}
public WitScript GenerateWitScript(TransactionSignature signature, PubKey publicKey)
{
if(publicKey == null)
throw new ArgumentNullException("publicKey");
return new WitScript(
signature == null ? OpcodeType.OP_0 : Op.GetPushOp(signature.ToBytes()),
Op.GetPushOp(publicKey.ToBytes())
);
}
public Script GenerateScriptSig(TransactionSignature signature)
{
return new Script(
Op.GetPushOp(signature.ToBytes())
);
}
public Script GenerateScriptSig(TransactionSignature[] signatures, Script redeemScript)
{
List<Op> ops = new List<Op>();
PayToMultiSigTemplate multiSigTemplate = new PayToMultiSigTemplate();
bool multiSig = multiSigTemplate.CheckScriptPubKey(redeemScript);
if(multiSig)
ops.Add(OpcodeType.OP_0);
foreach(var sig in signatures)
{
ops.Add(sig == null ? OpcodeType.OP_0 : Op.GetPushOp(sig.ToBytes()));
}
return GenerateScriptSig(ops.ToArray(), redeemScript);
}
public Script GenerateScriptSig(TransactionSignature[] signatures)
{
return GenerateScriptSig((IEnumerable<TransactionSignature>)signatures);
}
private static Script CombineMultisig(Script scriptPubKey, TransactionChecker checker, byte[][] sigs1, byte[][] sigs2, HashVersion hashVersion)
{
// Combine all the signatures we've got:
List <TransactionSignature> allsigs = new List <TransactionSignature>();
foreach (var v in sigs1)
{
if (TransactionSignature.IsValid(v))
{
allsigs.Add(new TransactionSignature(v));
}
}
foreach (var v in sigs2)
{
if (TransactionSignature.IsValid(v))
{
allsigs.Add(new TransactionSignature(v));
}
}
var multiSigParams = PayToMultiSigTemplate.Instance.ExtractScriptPubKeyParameters(scriptPubKey);
if (multiSigParams == null)
{
throw new InvalidOperationException("The scriptPubKey is not a valid multi sig");
}
Dictionary <PubKey, TransactionSignature> sigs = new Dictionary <PubKey, TransactionSignature>();
foreach (var sig in allsigs)
{
foreach (var pubkey in multiSigParams.PubKeys)
{
if (sigs.ContainsKey(pubkey))
{
continue; // Already got a sig for this pubkey
}
ScriptEvaluationContext eval = new ScriptEvaluationContext();
if (eval.CheckSig(sig, pubkey, scriptPubKey, checker, hashVersion))
{
sigs.AddOrReplace(pubkey, sig);
}
}
}
// Now build a merged CScript:
int nSigsHave = 0;
Script result = new Script(OpcodeType.OP_0); // pop-one-too-many workaround
foreach (var pubkey in multiSigParams.PubKeys)
{
if (sigs.ContainsKey(pubkey))
{
result += Op.GetPushOp(sigs[pubkey].ToBytes());
nSigsHave++;
}
if (nSigsHave >= multiSigParams.SignatureCount)
{
break;
}
}
// Fill any missing with OP_0:
for (int i = nSigsHave; i < multiSigParams.SignatureCount; i++)
{
result += OpcodeType.OP_0;
}
return(result);
}
private bool CheckSig(byte[] vchSig, byte[] vchPubKey, Script scriptCode, Transaction txTo, int nIn)
{
//static CSignatureCache signatureCache;
if (!PubKey.IsValidSize(vchPubKey.Length))
{
return(false);
}
PubKey pubkey = null;
try
{
pubkey = new PubKey(vchPubKey);
}
catch (Exception)
{
return(false);
}
// Hash type is one byte tacked on to the end of the signature
if (vchSig.Length == 0)
{
return(false);
}
var scriptSig = new TransactionSignature(vchSig);
if (!IsAllowedSignature(scriptSig.SigHash))
{
return(false);
}
uint256 sighash = scriptCode.SignatureHash(txTo, nIn, scriptSig.SigHash);
//if (signatureCache.Get(sighash, vchSig, pubkey))
// return true;
if (!pubkey.Verify(sighash, scriptSig.Signature))
{
if ((ScriptVerify & ScriptVerify.StrictEnc) != 0)
{
return(false);
}
//Replicate OpenSSL bug on 23b397edccd3740a74adb603c9756370fafcde9bcc4483eb271ecad09a94dd63 (http://r6.ca/blog/20111119T211504Z.html)
var nLenR = vchSig[3];
var nLenS = vchSig[5 + nLenR];
var R = 4;
var S = 6 + nLenR;
var newS = new Org.BouncyCastle.Math.BigInteger(1, vchSig, S, nLenS);
var newR = new Org.BouncyCastle.Math.BigInteger(1, vchSig, R, nLenR);
var sig2 = new ECDSASignature(newR, newS);
if (sig2.R != scriptSig.Signature.R || sig2.S != scriptSig.Signature.S)
{
if (!pubkey.Verify(sighash, sig2))
{
return(false);
}
}
}
//if (!(flags & SCRIPT_VERIFY_NOCACHE))
// signatureCache.Set(sighash, vchSig, pubkey);
return(true);
}
public async Task <string> WithdrawBtc(string withdrawHash, string recipient, decimal amount)
{
var coins = new List <UTXO>();
var coinsUsed = new List <UTXO>();
var estimatedFee = await client.GetFeeRateAsync(3);
try
{
await locker.WaitAsync();
while (coinsUsed.Sum(c => c.AsCoin().Amount.ToDecimal(MoneyUnit.BTC)) <= amount)
{
var txOperations = await client.GetUTXOsAsync(TrackedSource.Create(pubKey.GetAddress(ScriptPubKeyType.Legacy, Network.Main)));
foreach (var op in txOperations.Confirmed.UTXOs)
{
if (!usedInputs.ContainsKey(op.TransactionHash.ToString() + op.Value.Satoshi.ToString()))
{
coins.Add(op);
}
}
coins.Sort(delegate(UTXO x, UTXO y)
{
return(-x.AsCoin().Amount.CompareTo(y.AsCoin().Amount));
});
foreach (var item in coins)
{
if (coinsUsed.Sum(c => c.AsCoin().Amount.ToDecimal(MoneyUnit.BTC)) <= amount)
{
coinsUsed.Add(item);
usedInputs.Add(item.TransactionHash.ToString() + item.Value.Satoshi.ToString(), item);
}
else
{
break;
}
}
if (coinsUsed.Sum(c => c.AsCoin().Amount.ToDecimal(MoneyUnit.BTC)) < amount)
{
await Task.Delay(5000);
}
}
TransactionBuilder builder = null;
BitcoinPubKeyAddress destination = null;
if (network == NetworkType.Testnet)
{
builder = Network.TestNet.CreateTransactionBuilder();
destination = new BitcoinPubKeyAddress(recipient, Network.TestNet);
}
else
{
builder = Network.Main.CreateTransactionBuilder();
destination = new BitcoinPubKeyAddress(recipient, Network.Main);
}
NBitcoin.Transaction tx = builder
.AddCoins(coinsUsed.Select(c => c.AsCoin() /* .ScriptPubKey.ToBytes()*/))
.Send(destination, Money.Coins(amount))
.Send(TxNullDataTemplate.Instance.GenerateScriptPubKey(Encoding.UTF8.GetBytes(withdrawHash)), Money.Zero)
.SetChange(pubKey.GetAddress(ScriptPubKeyType.Legacy, Network.Main))
.SendEstimatedFees((await client.GetFeeRateAsync(3)).FeeRate)
.BuildTransaction(sign: false);
// Specify the path to unmanaged PKCS#11 library provided by the cryptographic device vendor
string pkcs11LibraryPath = @"/opt/cloudhsm/lib/libcloudhsm_pkcs11_standard.so";
// Create factories used by Pkcs11Interop library
Net.Pkcs11Interop.HighLevelAPI.Pkcs11InteropFactories factories = new Net.Pkcs11Interop.HighLevelAPI.Pkcs11InteropFactories();
// Load unmanaged PKCS#11 library
using (Net.Pkcs11Interop.HighLevelAPI.IPkcs11Library pkcs11Library = factories.Pkcs11LibraryFactory.LoadPkcs11Library(factories, pkcs11LibraryPath, AppType.MultiThreaded))
{
// Show general information about loaded library
Net.Pkcs11Interop.HighLevelAPI.ILibraryInfo libraryInfo = pkcs11Library.GetInfo();
Console.WriteLine("Library");
Console.WriteLine(" Manufacturer: " + libraryInfo.ManufacturerId);
Console.WriteLine(" Description: " + libraryInfo.LibraryDescription);
Console.WriteLine(" Version: " + libraryInfo.LibraryVersion);
// Get list of all available slots
foreach (Net.Pkcs11Interop.HighLevelAPI.ISlot slot in pkcs11Library.GetSlotList(SlotsType.WithOrWithoutTokenPresent))
{
// Show basic information about slot
Net.Pkcs11Interop.HighLevelAPI.ISlotInfo slotInfo = slot.GetSlotInfo();
Console.WriteLine();
Console.WriteLine("Slot");
Console.WriteLine(" Manufacturer: " + slotInfo.ManufacturerId);
Console.WriteLine(" Description: " + slotInfo.SlotDescription);
Console.WriteLine(" Token present: " + slotInfo.SlotFlags.TokenPresent);
if (slotInfo.SlotFlags.TokenPresent)
{
// Show basic information about token present in the slot
Net.Pkcs11Interop.HighLevelAPI.ITokenInfo tokenInfo = slot.GetTokenInfo();
Console.WriteLine("Token");
Console.WriteLine(" Manufacturer: " + tokenInfo.ManufacturerId);
Console.WriteLine(" Model: " + tokenInfo.Model);
Console.WriteLine(" Serial number: " + tokenInfo.SerialNumber);
Console.WriteLine(" Label: " + tokenInfo.Label);
// Show list of mechanisms (algorithms) supported by the token
Console.WriteLine("Supported mechanisms: ");
foreach (CKM mechanism in slot.GetMechanismList())
{
Console.WriteLine(" " + mechanism);
}
}
using (Net.Pkcs11Interop.HighLevelAPI.ISession session = slot.OpenSession(SessionType.ReadWrite))
{
session.Login(CKU.CKU_USER, pkcsUser);
// Specify signing mechanism
Net.Pkcs11Interop.HighLevelAPI.IMechanism mechanism = session.Factories.MechanismFactory.Create(CKM.CKM_ECDSA);
List <Net.Pkcs11Interop.HighLevelAPI.IObjectAttribute> publicKeyAttributes = new List <Net.Pkcs11Interop.HighLevelAPI.IObjectAttribute>();
publicKeyAttributes.Add(new Net.Pkcs11Interop.HighLevelAPI80.ObjectAttribute(CKA.CKA_LABEL, hsmKey));
publicKeyAttributes.Add(new Net.Pkcs11Interop.HighLevelAPI80.ObjectAttribute(CKA.CKA_SIGN, true));
Net.Pkcs11Interop.HighLevelAPI.IObjectHandle key = session.FindAllObjects(publicKeyAttributes).FirstOrDefault();
uint i = 0;
foreach (var c in tx.Inputs.AsIndexedInputs())
{
byte[] sourceData = c.GetSignatureHash(coinsUsed.First(cu => cu.Outpoint.Hash == c.PrevOut.Hash).AsCoin()).ToBytes();
Console.WriteLine("sourceData: " + tx.ToHex());
byte[] signature = session.Sign(mechanism, key, sourceData);
Console.WriteLine("signature: " + BitConverter.ToString(signature));
var canSig = ECDSASignatureFactory.FromComponents(signature).MakeCanonical();
var sig = new NBitcoin.TransactionSignature(new NBitcoin.Crypto.ECDSASignature(new NBitcoin.BouncyCastle.Math.BigInteger(canSig.R.ToByteArray()), new NBitcoin.BouncyCastle.Math.BigInteger(canSig.S.ToByteArray())), SigHash.Single);
builder = builder.AddKnownSignature(pubKey, sig, c.PrevOut);
TransactionSignature sig2 = null;
if (builder.TrySignInput(tx, i, SigHash.Single, out sig2))
{
Console.WriteLine("Input Signed");
Console.WriteLine(BitConverter.ToString(sig2.ToBytes()));
}
else
{
Console.WriteLine("Input Not Signed");
}
Console.WriteLine("tx: " + tx);
i++;
tx = builder.SignTransactionInPlace(tx);
}
Console.WriteLine("tx: " + tx);
TransactionPolicyError[] errors = null;
if (builder.Verify(tx, out errors))
{
var broadcastResult = await client.BroadcastAsync(tx);
broadcastResult.ToString();
Console.WriteLine("broadcast: " + tx.GetHash().ToString());
session.Logout();
return(tx.GetHash().ToString());
}
else
{
Console.WriteLine("Verify transaction failed");
}
if (errors != null)
{
foreach (var e in errors)
{
Console.WriteLine(e.ToString());
}
}
session.Logout();
}
}
}
return(null);
}
catch (Exception e)
{
Log.Error("Failed to send BTC Withdraw" + e.ToString());
throw e;
}
finally
{
locker.Release();
}
}
private Script CreateScriptSig(TransactionSigningContext ctx, TxIn input, int n, Script scriptPubKey)
{
var originalScriptSig = input.ScriptSig;
input.ScriptSig = scriptPubKey;
var pubKeyHashParams = PayToPubkeyHashTemplate.Instance.ExtractScriptPubKeyParameters(scriptPubKey);
if (pubKeyHashParams != null)
{
var key = FindKey(ctx, pubKeyHashParams);
if (key == null)
{
return(originalScriptSig);
}
var hash = input.ScriptSig.SignatureHash(ctx.Transaction, n, ctx.SigHash);
var sig = key.Sign(hash);
return(PayToPubkeyHashTemplate.Instance.GenerateScriptSig(new TransactionSignature(sig, ctx.SigHash), key.PubKey));
}
var multiSigParams = PayToMultiSigTemplate.Instance.ExtractScriptPubKeyParameters(scriptPubKey);
if (multiSigParams != null)
{
var alreadySigned = PayToMultiSigTemplate.Instance.ExtractScriptSigParameters(originalScriptSig);
if (alreadySigned == null && !Script.IsNullOrEmpty(originalScriptSig)) //Maybe a P2SH
{
var ops = originalScriptSig.ToOps().ToList();
ops.RemoveAt(ops.Count - 1);
alreadySigned = PayToMultiSigTemplate.Instance.ExtractScriptSigParameters(new Script(ops));
}
List <TransactionSignature> signatures = new List <TransactionSignature>();
if (alreadySigned != null)
{
signatures.AddRange(alreadySigned);
}
var keys =
multiSigParams
.PubKeys
.Select(p => FindKey(ctx, p))
.ToArray();
int sigCount = signatures.Where(s => s != TransactionSignature.Empty && s != null).Count();
for (int i = 0; i < keys.Length; i++)
{
if (sigCount == multiSigParams.SignatureCount)
{
break;
}
if (i >= signatures.Count)
{
signatures.Add(null);
}
if (keys[i] != null)
{
var hash = input.ScriptSig.SignatureHash(ctx.Transaction, n, ctx.SigHash);
var sig = keys[i].Sign(hash);
signatures[i] = new TransactionSignature(sig, ctx.SigHash);
sigCount++;
}
}
IEnumerable <TransactionSignature> sigs = signatures;
if (sigCount == multiSigParams.SignatureCount)
{
sigs = sigs.Where(s => s != TransactionSignature.Empty && s != null);
}
return(PayToMultiSigTemplate.Instance.GenerateScriptSig(sigs));
}
var pubKeyParams = PayToPubkeyTemplate.Instance.ExtractScriptPubKeyParameters(scriptPubKey);
if (pubKeyParams != null)
{
var key = FindKey(ctx, pubKeyParams);
if (key == null)
{
return(originalScriptSig);
}
var hash = input.ScriptSig.SignatureHash(ctx.Transaction, n, ctx.SigHash);
var sig = key.Sign(hash);
return(PayToPubkeyTemplate.Instance.GenerateScriptSig(new TransactionSignature(sig, ctx.SigHash)));
}
throw new NotSupportedException("Unsupported scriptPubKey");
}
public Script GenerateScriptSig(TransactionSignature signature)
{
return(new Script(
Op.GetPushOp(signature.ToBytes())
));
}
private bool CheckWitScriptCore(WitScript witScript)
{
return(witScript.PushCount == 2 &&
((witScript[0].Length == 1 && witScript[0][0] == 0) || (TransactionSignature.IsValid(witScript[0], ScriptVerify.None))) &&
PubKey.Check(witScript[1], false));
}
public Script GenerateScriptSig(TransactionSignature[] signatures, Script redeemScript)
{
List<Op> ops = new List<Op>();
foreach(var sig in signatures)
{
ops.Add(Op.GetPushOp(sig.ToBytes()));
}
return GenerateScriptSig(ops.ToArray(), redeemScript);
}