public void RunRule_ProvenHeadersActive_And_InvalidMerkleProof_BadMerkleProofErrorIsThrown()
{
// 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.PosBlockHeader.HashPrevBlock = prevProvenBlockHeader.GetHash();
if (provenBlockHeader.Coinstake is IPosTransactionWithTime posTrx)
{
posTrx.Time = provenBlockHeader.Time;
}
// Corrupt merkle proof.
provenBlockHeader.SetPrivateVariableValue("merkleProof", new PartialMerkleTree(new[] { new uint256(1234) }, new[] { false }));
// 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 utxoOne = new UnspentOutput(prevPosBlock.Transactions[1].Inputs[0].PrevOut, new Coins((uint)previousChainedHeader.Height, new TxOut(), false, true));
// 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 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 hit bad merkle proof error.
Action ruleValidation = () => this.consensusRules.RegisterRule <ProvenHeaderCoinstakeRule>().Run(this.ruleContext);
ruleValidation.Should().Throw <ConsensusErrorException>()
.And.ConsensusError
.Should().Be(ConsensusErrors.BadMerkleRoot);
}
private bool WasUtxoSelectedForStaking(Network network, int chainTipHeight, int utxoHeight)
{
this.network = network;
this.network.Consensus.Options = new PosConsensusOptions();
this.chain = GenerateChainWithBlockTimeAndHeight(2, this.network, 60, 0x1df88f6f);
PosMinting miner = this.InitializePosMinting();
ChainedHeader chainTip = this.chain.Tip;
chainTip.SetPrivatePropertyValue("Height", chainTipHeight);
chainTip.Previous.SetPrivatePropertyValue("Height", utxoHeight);
var descriptions = new List <UtxoStakeDescription>();
var utxoDescription = new UtxoStakeDescription();
utxoDescription.TxOut = new TxOut(new Money(100), new Mock <IDestination>().Object);
utxoDescription.OutPoint = new OutPoint(uint256.One, 0);
utxoDescription.HashBlock = chainTip.Previous.HashBlock;
utxoDescription.UtxoSet = new UnspentOutputs();
utxoDescription.UtxoSet.SetPrivatePropertyValue("Time", chainTip.Header.Time);
descriptions.Add(utxoDescription);
List <UtxoStakeDescription> suitableCoins = miner.GetUtxoStakeDescriptionsSuitableForStakingAsync(descriptions, chainTip, chainTip.Header.Time + 64, long.MaxValue).GetAwaiter().GetResult();
return(suitableCoins.Count == 1);
}
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.options.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();
provenBlockHeader.HashPrevBlock = prevProvenBlockHeader.GetHash();
provenBlockHeader.Coinstake.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.options.ProvenHeadersActivationHeight + 2);
// Setup coinstake transaction with a valid stake age.
uint unspentOutputsHeight = (uint)this.options.ProvenHeadersActivationHeight + 10;
var unspentOutputs = new UnspentOutputs(unspentOutputsHeight, new Transaction())
{
Outputs = new[] { new TxOut(new Money(100), privateKey.PubKey) }
};
this.coinView
.Setup(m => m.FetchCoinsAsync(It.IsAny <uint256[]>(), It.IsAny <CancellationToken>()))
.ReturnsAsync(new FetchCoinsResponse(new[] { unspentOutputs }, posBlock.GetHash()));
// Setup stake validator to pass signature validation.
this.stakeValidator
.Setup(m => m.VerifySignature(It.IsAny <UnspentOutputs>(), 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 <UnspentOutputs>(), It.IsAny <OutPoint>(), It.IsAny <uint>()));
// Setup stake validator to pass stake age check.
this.stakeValidator
.Setup(m => m.IsConfirmedInNPrevBlocks(It.IsAny <UnspentOutputs>(), It.IsAny <ChainedHeader>(), It.IsAny <long>()))
.Returns(true);
// 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 RunRule_ProvenHeadersActive_And_NullPreviousStake_InvalidPreviousProvenHeaderStakeModifierErrorIsThrown()
{
// Setup previous chained header.
PosBlock prevPosBlock = new PosBlockBuilder(this.network).Build();
ProvenBlockHeader prevProvenBlockHeader = new ProvenBlockHeaderBuilder(prevPosBlock, this.network).Build();
prevProvenBlockHeader.StakeModifierV2 = null; // Forcing previous stake modifier to null.
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();
provenBlockHeader.PosBlockHeader.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);
// When we run the validation rule, we should hit previous stake null error.
Action ruleValidation = () => this.consensusRules.RegisterRule <ProvenHeaderCoinstakeRule>().Run(this.ruleContext);
ruleValidation.Should().Throw <ConsensusErrorException>()
.And.ConsensusError
.Should().Be(ConsensusErrors.InvalidPreviousProvenHeaderStakeModifier);
}
public void 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();
// 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_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.options.ProvenHeadersActivationHeight + 1);
// Setup proven header with valid coinstake.
PosBlock posBlock = new PosBlockBuilder(this.network).Build();
ProvenBlockHeader provenBlockHeader = new ProvenBlockHeaderBuilder(posBlock, this.network).Build();
provenBlockHeader.HashPrevBlock = prevProvenBlockHeader.GetHash();
provenBlockHeader.Coinstake.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.options.ProvenHeadersActivationHeight + 2);
// Setup coinstake transaction with a valid stake age.
this.coinView
.Setup(m => m.FetchCoinsAsync(It.IsAny <uint256[]>(), It.IsAny <CancellationToken>()))
.ReturnsAsync(new FetchCoinsResponse(new[] { new UnspentOutputs((uint)this.options.ProvenHeadersActivationHeight + 10, new Transaction()) }, posBlock.GetHash()));
// Setup stake validator to pass stake age check.
this.stakeValidator
.Setup(m => m.IsConfirmedInNPrevBlocks(It.IsAny <UnspentOutputs>(), It.IsAny <ChainedHeader>(), It.IsAny <long>()))
.Returns(true);
// Setup stake validator to pass signature validation.
this.stakeValidator
.Setup(m => m.VerifySignature(It.IsAny <UnspentOutputs>(), 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 <UnspentOutputs>(), 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_InvalidStakeDepth_StakeDepthErrorIsThrown()
{
// 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();
provenBlockHeader.PosBlockHeader.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 utxoOne = new UnspentOutput(prevPosBlock.Transactions[1].Inputs[0].PrevOut, new Coins((uint)previousChainedHeader.Height, new TxOut(), false, true));
// Setup coinstake transaction with an invalid 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 fail stake age check.
this.stakeValidator
.Setup(m => m.IsConfirmedInNPrevBlocks(It.IsAny <UnspentOutput>(), It.IsAny <ChainedHeader>(), It.IsAny <long>()))
.Returns(true);
// When we run the validation rule, we should hit coinstake depth error.
Action ruleValidation = () => this.consensusRules.RegisterRule <ProvenHeaderCoinstakeRule>().Run(this.ruleContext);
ruleValidation.Should().Throw <ConsensusErrorException>()
.And.ConsensusError
.Should().Be(ConsensusErrors.InvalidStakeDepth);
}
public void RunRule_ProvenHeadersActive_And_InvalidCoinstakeSignature_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();
provenBlockHeader.HashPrevBlock = prevProvenBlockHeader.GetHash();
provenBlockHeader.Coinstake.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 UTXO with valid outputs.
var utxoOneTransaction = new Transaction();
utxoOneTransaction.AddOutput(new TxOut());
var utxoOne = new UnspentOutputs((uint)this.provenHeadersActivationHeight + 10, utxoOneTransaction);
// Setup coinstake transaction with a valid stake age.
this.coinView
.Setup(m => m.FetchCoinsAsync(It.IsAny <uint256[]>(), It.IsAny <CancellationToken>()))
.ReturnsAsync(new FetchCoinsResponse(new[] { utxoOne }, posBlock.GetHash()));
// Setup stake validator to fail signature validation.
this.stakeValidator
.Setup(m => m.VerifySignature(It.IsAny <UnspentOutputs>(), It.IsAny <Transaction>(), It.IsAny <int>(), It.IsAny <ScriptVerify>()))
.Returns(false);
// Setup stake validator to pass stake age check.
this.stakeValidator
.Setup(m => m.IsConfirmedInNPrevBlocks(It.IsAny <UnspentOutputs>(), It.IsAny <ChainedHeader>(), It.IsAny <long>()))
.Returns(false);
// When we run the validation rule, we should hit coinstake signature verification error.
Action ruleValidation = () => this.consensusRules.RegisterRule <ProvenHeaderCoinstakeRule>().Run(this.ruleContext);
ruleValidation.Should().Throw <ConsensusErrorException>().And.ConsensusError.Should().Be(ConsensusErrors.CoinstakeVerifySignatureFailed);
}
/// <summary>
/// Builds a chain of proven headers.
/// </summary>
/// <param name="blockCount">The amount of blocks to chain.</param>
/// <param name="startingHeader">Build the chain from this header, if not start from genesis.</param>
/// <returns>Tip of a created chain of headers.</returns>
public ChainedHeader BuildProvenHeaderChain(int blockCount, ChainedHeader startingHeader = null)
{
startingHeader = startingHeader ?? ChainedHeadersHelper.CreateGenesisChainedHeader(this.Network);
for (int i = 1; i < blockCount; i++)
{
PosBlock block = this.CreatePosBlock();
ProvenBlockHeader header = ((PosConsensusFactory)this.Network.Consensus.ConsensusFactory).CreateProvenBlockHeader(block);
header.Nonce = RandomUtils.GetUInt32();
header.HashPrevBlock = startingHeader.HashBlock;
header.Bits = Target.Difficulty1;
ChainedHeader prevHeader = startingHeader;
startingHeader = new ChainedHeader(header, header.GetHash(), prevHeader.Height + 1);
startingHeader.SetPrivatePropertyValue("Previous", prevHeader);
prevHeader.Next.Add(startingHeader);
}
return(startingHeader);
}
/// <returns>Tip of a created chain of headers.</returns>
public ChainedHeader BuildChainWithProvenHeaders(int blockCount)
{
ChainedHeader currentHeader = ChainedHeadersHelper.CreateGenesisChainedHeader(this.Network);
for (int i = 1; i < blockCount; i++)
{
PosBlock block = this.CreatePosBlockMock();
ProvenBlockHeader header = ((PosConsensusFactory)this.Network.Consensus.ConsensusFactory).CreateProvenBlockHeader(block);
header.Nonce = RandomUtils.GetUInt32();
header.HashPrevBlock = currentHeader.HashBlock;
header.Bits = Target.Difficulty1;
ChainedHeader prevHeader = currentHeader;
currentHeader = new ChainedHeader(header, header.GetHash(), i);
currentHeader.SetPrivatePropertyValue("Previous", prevHeader);
prevHeader.Next.Add(currentHeader);
}
return(currentHeader);
}
public (ChainedHeader chainedHeader, List <ProvenBlockHeader> provenBlockHeaders) BuildChainWithProvenHeaders(int blockCount, Network network, bool addNext = false)
{
Guard.Assert(blockCount > 0);
var provenBlockHeaders = new List <ProvenBlockHeader>();
ChainedHeader chainedHeader = null;
ChainedHeader previousChainHeader = null;
for (int i = 0; i < blockCount; i++)
{
PosBlock block = CreatePosBlockMock();
ProvenBlockHeader header = ((PosConsensusFactory)this.Network.Consensus.ConsensusFactory).CreateProvenBlockHeader(block);
header.Nonce = RandomUtils.GetUInt32();
header.HashPrevBlock = i > 0 ? chainedHeader.HashBlock : null;
header.Bits = Target.Difficulty1;
chainedHeader = new ChainedHeader(header, header.GetHash(), i);
if (previousChainHeader != null)
{
chainedHeader.SetPrivatePropertyValue("Previous", previousChainHeader);
if (addNext)
{
chainedHeader.Previous.Next.Add(chainedHeader);
}
}
previousChainHeader = chainedHeader;
provenBlockHeaders.Add(header);
}
return(chainedHeader, provenBlockHeaders);
}
public void RunRule_ProvenHeadersActive_And_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.PosBlockHeader.HashPrevBlock = prevProvenBlockHeader.GetHash();
if (provenBlockHeader.Coinstake is IPosTransactionWithTime posTrx)
{
posTrx.Time = provenBlockHeader.Time;
}
// 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();
}
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.PosBlockHeader.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);
}