public void witnessHasPushSizeLimit()
{
Key bob = new Key();
Transaction tx = new Transaction();
tx.Outputs.Add(new TxOut(Money.Coins(1.0m), bob.PubKey.ScriptPubKey.WitHash));
WitScriptCoin coin = new WitScriptCoin(tx.Outputs.AsCoins().First(), bob.PubKey.ScriptPubKey);
Transaction spending = new Transaction();
spending.AddInput(tx, 0);
spending.Sign(bob, coin);
ScriptError error;
Assert.True(spending.Inputs.AsIndexedInputs().First().VerifyScript(coin, out error));
spending.Inputs[0].WitScript = new WitScript(new[] { new byte[521] }.Concat(spending.Inputs[0].WitScript.Pushes).ToArray());
Assert.False(spending.Inputs.AsIndexedInputs().First().VerifyScript(coin, out error));
Assert.Equal(ScriptError.PushSize, error);
}
public void CanBuildWitTransaction()
{
Key alice = new Key();
Key bob = new Key();
Transaction previousTx = null;
Coin previousCoin = null;
WitScriptCoin witnessCoin = null;
TransactionBuilder builder = null;
Transaction signedTx = null;
ScriptCoin scriptCoin = null;
//P2WPKH
previousTx = new Transaction();
previousTx.Outputs.Add(new TxOut(Money.Coins(1.0m), alice.PubKey.WitHash));
previousCoin = previousTx.Outputs.AsCoins().First();
builder = new TransactionBuilder();
builder.AddKeys(alice);
builder.AddCoins(previousCoin);
builder.Send(bob, Money.Coins(0.4m));
builder.SendFees(Money.Satoshis(30000));
builder.SetChange(alice);
signedTx = builder.BuildTransaction(true);
Assert.True(builder.Verify(signedTx));
//P2WSH
previousTx = new Transaction();
previousTx.Outputs.Add(new TxOut(Money.Coins(1.0m), alice.PubKey.ScriptPubKey.WitHash));
previousCoin = previousTx.Outputs.AsCoins().First();
witnessCoin = new WitScriptCoin(previousCoin, alice.PubKey.ScriptPubKey);
builder = new TransactionBuilder();
builder.AddKeys(alice);
builder.AddCoins(witnessCoin);
builder.Send(bob, Money.Coins(0.4m));
builder.SendFees(Money.Satoshis(30000));
builder.SetChange(alice);
signedTx = builder.BuildTransaction(true);
Assert.True(builder.Verify(signedTx));
//P2SH(P2WPKH)
previousTx = new Transaction();
previousTx.Outputs.Add(new TxOut(Money.Coins(1.0m), alice.PubKey.WitHash.ScriptPubKey.Hash));
previousCoin = previousTx.Outputs.AsCoins().First();
scriptCoin = new ScriptCoin(previousCoin, alice.PubKey.WitHash.ScriptPubKey);
builder = new TransactionBuilder();
builder.AddKeys(alice);
builder.AddCoins(scriptCoin);
builder.Send(bob, Money.Coins(0.4m));
builder.SendFees(Money.Satoshis(30000));
builder.SetChange(alice);
signedTx = builder.BuildTransaction(true);
Assert.True(builder.Verify(signedTx));
//P2SH(P2WSH)
previousTx = new Transaction();
previousTx.Outputs.Add(new TxOut(Money.Coins(1.0m), alice.PubKey.ScriptPubKey.WitHash.ScriptPubKey.Hash));
previousCoin = previousTx.Outputs.AsCoins().First();
witnessCoin = new WitScriptCoin(previousCoin, alice.PubKey.ScriptPubKey);
builder = new TransactionBuilder();
builder.AddKeys(alice);
builder.AddCoins(witnessCoin);
builder.Send(bob, Money.Coins(0.4m));
builder.SendFees(Money.Satoshis(30000));
builder.SetChange(alice);
signedTx = builder.BuildTransaction(true);
Assert.True(builder.Verify(signedTx));
//Can remove witness data from tx
var signedTx2 = signedTx.WithOptions(TransactionOptions.None);
Assert.Equal(signedTx.GetHash(), signedTx2.GetHash());
Assert.True(signedTx2.GetSerializedSize() < signedTx.GetSerializedSize());
}