public SignaturesRequest CreateSignatureRequest(Script cashoutDestination, FeeRate feeRate) { if (cashoutDestination == null) { throw new ArgumentNullException(nameof(cashoutDestination)); } if (feeRate == null) { throw new ArgumentNullException(nameof(feeRate)); } AssertState(PromiseClientStates.WaitingSignatureRequest); Transaction cashout = new Transaction(); cashout.AddInput(new TxIn(InternalState.EscrowedCoin.Outpoint, Script.Empty)); cashout.AddOutput(new TxOut(Money.Zero, cashoutDestination)); var fee = feeRate.GetFee(cashout.GetVirtualSize()); cashout.Outputs[0].Value = InternalState.EscrowedCoin.Amount - fee; List <HashBase> hashes = new List <HashBase>(); LockTime lockTime = new LockTime(0); for (int i = 0; i < Parameters.RealTransactionCount; i++) { RealHash h = new RealHash(cashout, InternalState.EscrowedCoin); h.LockTime = lockTime; lockTime++; hashes.Add(h); } for (int i = 0; i < Parameters.FakeTransactionCount; i++) { FakeHash h = new FakeHash(Parameters); h.Salt = new uint256(RandomUtils.GetBytes(32)); hashes.Add(h); } _Hashes = hashes.ToArray(); NBitcoin.Utils.Shuffle(_Hashes, RandomUtils.GetInt32()); for (int i = 0; i < _Hashes.Length; i++) { _Hashes[i].Index = i; } var fakeIndices = _Hashes.OfType <FakeHash>().Select(h => h.Index).ToArray(); uint256 indexSalt = null; var request = new SignaturesRequest { Hashes = _Hashes.Select(h => h.GetHash()).ToArray(), FakeIndexesHash = PromiseUtils.HashIndexes(ref indexSalt, fakeIndices), }; InternalState.IndexSalt = indexSalt; InternalState.Cashout = cashout.Clone(); InternalState.Status = PromiseClientStates.WaitingCommitments; InternalState.FakeIndexes = fakeIndices; return(request); }
public SignaturesRequest CreateSignatureRequest(Script cashoutDestination, FeeRate feeRate) { if (cashoutDestination == null) { throw new ArgumentNullException(nameof(cashoutDestination)); } if (feeRate == null) { throw new ArgumentNullException(nameof(feeRate)); } AssertState(PromiseClientStates.WaitingSignatureRequest); Transaction cashout = new Transaction(); cashout.AddInput(new TxIn(InternalState.EscrowedCoin.Outpoint)); cashout.Inputs[0].ScriptSig = new Script( Op.GetPushOp(TrustedBroadcastRequest.PlaceholderSignature), Op.GetPushOp(TrustedBroadcastRequest.PlaceholderSignature), Op.GetPushOp(InternalState.EscrowedCoin.Redeem.ToBytes()) ); cashout.Inputs[0].Witnessify(); cashout.AddOutput(new TxOut(InternalState.EscrowedCoin.Amount, cashoutDestination)); cashout.Outputs[0].Value -= feeRate.GetFee(cashout.GetVirtualSize()); List <HashBase> hashes = new List <HashBase>(); for (int i = 0; i < Parameters.RealTransactionCount; i++) { RealHash h = new RealHash(cashout, InternalState.EscrowedCoin); h.FeeVariation = Money.Satoshis(i); hashes.Add(h); } for (int i = 0; i < Parameters.FakeTransactionCount; i++) { FakeHash h = new FakeHash(Parameters); h.Salt = new uint256(RandomUtils.GetBytes(32)); hashes.Add(h); } _Hashes = hashes.ToArray(); NBitcoin.Utils.Shuffle(_Hashes, RandomUtils.GetInt32()); for (int i = 0; i < _Hashes.Length; i++) { _Hashes[i].Index = i; } var fakeIndices = _Hashes.OfType <FakeHash>().Select(h => h.Index).ToArray(); uint256 indexSalt = null; var request = new SignaturesRequest { Hashes = _Hashes.Select(h => h.GetHash()).ToArray(), FakeIndexesHash = PromiseUtils.HashIndexes(ref indexSalt, fakeIndices), }; InternalState.IndexSalt = indexSalt; InternalState.Cashout = cashout.Clone(); InternalState.Status = PromiseClientStates.WaitingCommitments; InternalState.FakeIndexes = fakeIndices; return(request); }