public void RunRule_ProvenHeadersActive_And_InvalidStakeKernelHash_CoinstakeVerifySignatureErrorIsThrown()
{
// Setup previous chained header.
PosBlock prevPosBlock = new PosBlockBuilder(this.network).Build();
ProvenBlockHeader prevProvenBlockHeader = new ProvenBlockHeaderBuilder(prevPosBlock, this.network).Build();
var previousChainedHeader = new ChainedHeader(prevProvenBlockHeader, prevProvenBlockHeader.GetHash(), null);
previousChainedHeader.SetPrivatePropertyValue("Height", this.provenHeadersActivationHeight + 1);
// Setup proven header with valid coinstake.
PosBlock posBlock = new PosBlockBuilder(this.network).Build();
ProvenBlockHeader provenBlockHeader = new ProvenBlockHeaderBuilder(posBlock, this.network).Build(prevProvenBlockHeader);
provenBlockHeader.HashPrevBlock = prevProvenBlockHeader.GetHash();
if (provenBlockHeader.Coinstake is IPosTransactionWithTime posTrx)
{
posTrx.Time = provenBlockHeader.Time;
}
// Setup chained header and move it to the height higher than proven header activation height.
this.ruleContext.ValidationContext.ChainedHeaderToValidate = new ChainedHeader(provenBlockHeader, provenBlockHeader.GetHash(), previousChainedHeader);
this.ruleContext.ValidationContext.ChainedHeaderToValidate.SetPrivatePropertyValue("Height", this.provenHeadersActivationHeight + 2);
// Ensure that coinview returns a UTXO with valid outputs.
var utxoOneTransaction = this.network.CreateTransaction();
utxoOneTransaction.AddOutput(new TxOut());
var utxoOne = new UnspentOutput(new OutPoint(utxoOneTransaction, 0), new Coins((uint)this.provenHeadersActivationHeight + 10, utxoOneTransaction.Outputs.First(), false));
// Setup coinstake transaction with a valid stake age.
var res = new FetchCoinsResponse();
res.UnspentOutputs.Add(utxoOne.OutPoint, utxoOne);
this.coinView
.Setup(m => m.FetchCoins(It.IsAny <OutPoint[]>()))
.Returns(res);
// Setup stake validator to pass stake age check.
this.stakeValidator
.Setup(m => m.IsConfirmedInNPrevBlocks(It.IsAny <UnspentOutput>(), It.IsAny <ChainedHeader>(), It.IsAny <long>()))
.Returns(false);
// Setup stake validator to pass signature validation.
this.stakeValidator
.Setup(m => m.VerifySignature(It.IsAny <UnspentOutput>(), It.IsAny <Transaction>(), It.IsAny <int>(), It.IsAny <ScriptVerify>()))
.Returns(true);
// Setup stake validator to fail stake kernel hash validation.
this.stakeChain.Setup(m => m.Get(It.IsAny <uint256>())).Returns(new BlockStake());
this.stakeValidator
.Setup(m => m.CheckStakeKernelHash(It.IsAny <PosRuleContext>(), It.IsAny <uint>(), It.IsAny <uint256>(), It.IsAny <UnspentOutput>(), It.IsAny <OutPoint>(), It.IsAny <uint>()))
.Throws(new ConsensusErrorException(ConsensusErrors.StakeHashInvalidTarget));
// When we run the validation rule, we should hit stake hash invalid target error.
Action ruleValidation = () => this.consensusRules.RegisterRule <ProvenHeaderCoinstakeRule>().Run(this.ruleContext);
ruleValidation.Should().Throw <ConsensusErrorException>()
.And.ConsensusError
.Should().Be(ConsensusErrors.StakeHashInvalidTarget);
}
public void RunRule_ProvenHeadersActive_And_InvalidCoinstakeKernelSignature_BadBlockSignatureErrorIsThrown()
{
// Setup private key.
var mnemonic = new Mnemonic(Wordlist.English, WordCount.Twelve);
Key privateKey = mnemonic.DeriveExtKey().PrivateKey;
// Setup previous chained header.
PosBlock prevPosBlock = new PosBlockBuilder(this.network, privateKey).Build();
ProvenBlockHeader prevProvenBlockHeader = new ProvenBlockHeaderBuilder(prevPosBlock, this.network).Build();
var previousChainedHeader = new ChainedHeader(prevProvenBlockHeader, prevProvenBlockHeader.GetHash(), null);
previousChainedHeader.SetPrivatePropertyValue("Height", this.provenHeadersActivationHeight + 1);
// Setup proven header with valid coinstake.
PosBlock posBlock = new PosBlockBuilder(this.network, privateKey).Build();
posBlock.UpdateMerkleRoot();
ProvenBlockHeader provenBlockHeader = new ProvenBlockHeaderBuilder(posBlock, this.network).Build(prevProvenBlockHeader);
provenBlockHeader.HashPrevBlock = prevProvenBlockHeader.GetHash();
if (provenBlockHeader.Coinstake is IPosTransactionWithTime posTrx)
{
posTrx.Time = provenBlockHeader.Time;
}
// Set invalid coinstake script pub key.
provenBlockHeader.Coinstake.Outputs[1].ScriptPubKey = new Script("03cdac179a3391d96cf4957fa0255e4aa8055a993e92df7146e740117885b184ea OP_CHECKSIG");
// Setup chained header and move it to the height higher than proven header activation height.
this.ruleContext.ValidationContext.ChainedHeaderToValidate = new ChainedHeader(provenBlockHeader, provenBlockHeader.GetHash(), previousChainedHeader);
this.ruleContext.ValidationContext.ChainedHeaderToValidate.SetPrivatePropertyValue("Height", this.provenHeadersActivationHeight + 2);
// Setup coinstake transaction with a valid stake age.
uint unspentOutputsHeight = (uint)this.provenHeadersActivationHeight + 10;
var res = new FetchCoinsResponse();
var unspentOutputs = new UnspentOutput(prevPosBlock.Transactions[1].Inputs[0].PrevOut,
new Coins(unspentOutputsHeight, new TxOut(new Money(100), privateKey.PubKey), false));
res.UnspentOutputs.Add(unspentOutputs.OutPoint, unspentOutputs);
this.coinView
.Setup(m => m.FetchCoins(It.IsAny <OutPoint[]>()))
.Returns(res);
// Setup stake validator to pass signature validation.
this.stakeValidator
.Setup(m => m.VerifySignature(It.IsAny <UnspentOutput>(), It.IsAny <Transaction>(), It.IsAny <int>(), It.IsAny <ScriptVerify>()))
.Returns(true);
// Setup stake validator to pass stake kernel hash validation.
this.stakeChain.Setup(m => m.Get(It.IsAny <uint256>())).Returns(new BlockStake());
this.stakeValidator
.Setup(m => m.CheckStakeKernelHash(It.IsAny <PosRuleContext>(), It.IsAny <uint>(), It.IsAny <uint256>(), It.IsAny <UnspentOutput>(), It.IsAny <OutPoint>(), It.IsAny <uint>())).Returns(true);
// Setup stake validator to pass stake age check.
this.stakeValidator
.Setup(m => m.IsConfirmedInNPrevBlocks(It.IsAny <UnspentOutput>(), It.IsAny <ChainedHeader>(), It.IsAny <long>()))
.Returns(false);
// When we run the validation rule, we should hit bad merkle proof error.
Action ruleValidation = () => this.consensusRules.RegisterRule <ProvenHeaderCoinstakeRule>().Run(this.ruleContext);
ruleValidation.Should().Throw <ConsensusErrorException>()
.And.ConsensusError
.Should().Be(ConsensusErrors.BadBlockSignature);
}
public void ValidProvenHeader_NoErrorsAreThrown()
{
// Setup private key.
var mnemonic = new Mnemonic(Wordlist.English, WordCount.Twelve);
Key privateKey = mnemonic.DeriveExtKey().PrivateKey;
// Setup previous chained header.
PosBlock prevPosBlock = new PosBlockBuilder(this.network, privateKey).Build();
ProvenBlockHeader prevProvenBlockHeader = new ProvenBlockHeaderBuilder(prevPosBlock, this.network).Build();
var previousChainedHeader = new ChainedHeader(prevProvenBlockHeader, prevProvenBlockHeader.GetHash(), null);
previousChainedHeader.SetPrivatePropertyValue("Height", this.provenHeadersActivationHeight + 1);
// Setup proven header with valid coinstake.
PosBlock posBlock = new PosBlockBuilder(this.network, privateKey).Build();
posBlock.UpdateMerkleRoot();
posBlock.Header.HashPrevBlock = prevProvenBlockHeader.GetHash();
posBlock.Header.Bits = 16777216;
// Update signature.
ECDSASignature signature = privateKey.Sign(posBlock.Header.GetHash());
posBlock.BlockSignature = new BlockSignature {
Signature = signature.ToDER()
};
ProvenBlockHeader provenBlockHeader = new ProvenBlockHeaderBuilder(posBlock, this.network).Build(prevProvenBlockHeader);
provenBlockHeader.HashPrevBlock = prevProvenBlockHeader.GetHash();
// Set invalid coinstake script pub key
provenBlockHeader.Coinstake.Outputs[1].ScriptPubKey = privateKey.PubKey.ScriptPubKey;
// Setup chained header and move it to the height higher than proven header activation height.
this.ruleContext.ValidationContext.ChainedHeaderToValidate = new ChainedHeader(provenBlockHeader, provenBlockHeader.GetHash(), previousChainedHeader);
this.ruleContext.ValidationContext.ChainedHeaderToValidate.SetPrivatePropertyValue("Height", this.provenHeadersActivationHeight + 2);
// Setup coinstake transaction with a valid stake age.
uint unspentOutputsHeight = (uint)this.provenHeadersActivationHeight + 10;
var res = new FetchCoinsResponse();
var unspentOutputs = new UnspentOutput(prevPosBlock.Transactions[1].Inputs[0].PrevOut,
new Coins(unspentOutputsHeight, new TxOut(new Money(100), privateKey.PubKey), false));
res.UnspentOutputs.Add(unspentOutputs.OutPoint, unspentOutputs);
this.coinView
.Setup(m => m.FetchCoins(It.IsAny <OutPoint[]>()))
.Returns(res);
// Setup stake validator to pass stake age check.
this.stakeValidator
.Setup(m => m.IsConfirmedInNPrevBlocks(It.IsAny <UnspentOutput>(), It.IsAny <ChainedHeader>(), It.IsAny <long>()))
.Returns(false);
// Setup stake validator to pass signature validation.
this.stakeValidator
.Setup(m => m.VerifySignature(It.IsAny <UnspentOutput>(), It.IsAny <Transaction>(), It.IsAny <int>(), It.IsAny <ScriptVerify>()))
.Returns(true);
// Setup stake validator to pass stake kernel hash validation.
this.stakeChain.Setup(m => m.Get(It.IsAny <uint256>())).Returns(new BlockStake());
this.stakeValidator
.Setup(m => m.CheckStakeKernelHash(It.IsAny <PosRuleContext>(), It.IsAny <uint>(), It.IsAny <uint256>(), It.IsAny <UnspentOutput>(), It.IsAny <OutPoint>(), It.IsAny <uint>())).Returns(true);
// When we run the validation rule, we should not hit any errors.
Action ruleValidation = () => this.consensusRules.RegisterRule <ProvenHeaderCoinstakeRule>().Run(this.ruleContext);
ruleValidation.Should().NotThrow();
}
