public static void SignDepositData(IServiceProvider testServiceProvider, DepositData depositData, byte[] privateKey, BeaconState?state)
{
SignatureDomains signatureDomains = testServiceProvider.GetService <IOptions <SignatureDomains> >().Value;
IBeaconChainUtility beaconChainUtility = testServiceProvider.GetService <IBeaconChainUtility>();
ICryptographyService cryptographyService = testServiceProvider.GetService <ICryptographyService>();
Domain domain;
if (state == null)
{
// Genesis
domain = beaconChainUtility.ComputeDomain(signatureDomains.Deposit);
}
else
{
BeaconStateAccessor beaconStateAccessor = testServiceProvider.GetService <BeaconStateAccessor>();
domain = beaconStateAccessor.GetDomain(state, signatureDomains.Deposit, Epoch.None);
}
DepositMessage depositMessage = new DepositMessage(depositData.PublicKey, depositData.WithdrawalCredentials, depositData.Amount);
Root depositMessageRoot = cryptographyService.HashTreeRoot(depositMessage);
Root signingRoot = beaconChainUtility.ComputeSigningRoot(depositMessageRoot, domain);
BlsSignature signature = TestSecurity.BlsSign(signingRoot, privateKey);
depositData.SetSignature(signature);
}
public static SignedBeaconBlock SignBlock(IServiceProvider testServiceProvider, BeaconState state, BeaconBlock block, ValidatorIndex?optionalProposerIndex)
{
TimeParameters timeParameters = testServiceProvider.GetService <IOptions <TimeParameters> >().Value;
SignatureDomains signatureDomains = testServiceProvider.GetService <IOptions <SignatureDomains> >().Value;
ICryptographyService cryptographyService = testServiceProvider.GetService <ICryptographyService>();
IBeaconChainUtility beaconChainUtility = testServiceProvider.GetService <IBeaconChainUtility>();
BeaconStateAccessor beaconStateAccessor = testServiceProvider.GetService <BeaconStateAccessor>();
BeaconStateTransition beaconStateTransition = testServiceProvider.GetService <BeaconStateTransition>();
if (state.Slot > block.Slot)
{
throw new ArgumentOutOfRangeException("block.Slot", block.Slot, $"Slot of block must be equal or less that state slot {state.Slot}");
}
Epoch blockEpoch = beaconChainUtility.ComputeEpochAtSlot(block.Slot);
ValidatorIndex proposerIndex;
if (optionalProposerIndex.HasValue)
{
proposerIndex = optionalProposerIndex.Value;
}
else
{
if (block.Slot == state.Slot)
{
proposerIndex = beaconStateAccessor.GetBeaconProposerIndex(state);
}
else
{
Epoch stateEpoch = beaconChainUtility.ComputeEpochAtSlot(state.Slot);
if (stateEpoch + 1 > blockEpoch)
{
Console.WriteLine("WARNING: Block slot far away, and no proposer index manually given."
+ " Signing block is slow due to transition for proposer index calculation.");
}
// use stub state to get proposer index of future slot
BeaconState stubState = BeaconState.Clone(state);
beaconStateTransition.ProcessSlots(stubState, block.Slot);
proposerIndex = beaconStateAccessor.GetBeaconProposerIndex(stubState);
}
}
byte[][] privateKeys = TestKeys.PrivateKeys(timeParameters).ToArray();
byte[] privateKey = privateKeys[(int)(ulong)proposerIndex];
Root blockHashTreeRoot = cryptographyService.HashTreeRoot(block);
Domain proposerDomain = beaconStateAccessor.GetDomain(state, signatureDomains.BeaconProposer, blockEpoch);
Root signingRoot = beaconChainUtility.ComputeSigningRoot(blockHashTreeRoot, proposerDomain);
BlsSignature signature = TestSecurity.BlsSign(signingRoot, privateKey);
return(new SignedBeaconBlock(block, signature));
}
public static BlsSignature GetAttestationSignature(IServiceProvider testServiceProvider, BeaconState state, AttestationData attestationData, byte[] privateKey)
{
SignatureDomains signatureDomains = testServiceProvider.GetService <IOptions <SignatureDomains> >().Value;
IBeaconChainUtility beaconChainUtility = testServiceProvider.GetService <IBeaconChainUtility>();
BeaconStateAccessor beaconStateAccessor = testServiceProvider.GetService <BeaconStateAccessor>();
Root attestationDataRoot = attestationData.HashTreeRoot();
Domain domain = beaconStateAccessor.GetDomain(state, signatureDomains.BeaconAttester, attestationData.Target.Epoch);
Root signingRoot = beaconChainUtility.ComputeSigningRoot(attestationDataRoot, domain);
BlsSignature signature = TestSecurity.BlsSign(signingRoot, privateKey);
return(signature);
}
private DepositData BuildAndSignDepositData(ulong validatorIndex, Gwei amount, SignatureDomains signatureDomains)
{
InitialValues initialValues = _initialValueOptions.CurrentValue;
byte[] privateKey = GeneratePrivateKey(validatorIndex);
// Public Key
BLSParameters blsParameters = new BLSParameters
{
PrivateKey = privateKey
};
using BLS bls = BLS.Create(blsParameters);
byte[] publicKeyBytes = new byte[BlsPublicKey.Length];
bls.TryExportBlsPublicKey(publicKeyBytes, out int publicKeyBytesWritten);
BlsPublicKey publicKey = new BlsPublicKey(publicKeyBytes);
// Withdrawal Credentials
Bytes32 withdrawalCredentials = _crypto.Hash(publicKey.AsSpan());
withdrawalCredentials.Unwrap()[0] = initialValues.BlsWithdrawalPrefix;
// Build deposit data
DepositData depositData = new DepositData(publicKey, withdrawalCredentials, amount, BlsSignature.Zero);
// Sign deposit data
Domain domain = _beaconChainUtility.ComputeDomain(signatureDomains.Deposit);
DepositMessage depositMessage = new DepositMessage(
depositData.PublicKey,
depositData.WithdrawalCredentials,
depositData.Amount);
Root depositMessageRoot = _crypto.HashTreeRoot(depositMessage);
Root depositDataSigningRoot = _beaconChainUtility.ComputeSigningRoot(depositMessageRoot, domain);
byte[] signatureBytes = new byte[96];
bls.TrySignData(depositDataSigningRoot.AsSpan(), signatureBytes, out int bytesWritten);
BlsSignature depositDataSignature = new BlsSignature(signatureBytes);
depositData.SetSignature(depositDataSignature);
if (_logger.IsEnabled(LogLevel.Debug))
{
LogDebug.QuickStartAddValidator(_logger, validatorIndex, publicKey.ToString().Substring(0, 12),
null);
}
return(depositData);
}
public static SignedVoluntaryExit SignVoluntaryExit(IServiceProvider testServiceProvider, BeaconState state, VoluntaryExit voluntaryExit, byte[] privateKey)
{
var signatureDomains = testServiceProvider.GetService <IOptions <SignatureDomains> >().Value;
IBeaconChainUtility beaconChainUtility = testServiceProvider.GetService <IBeaconChainUtility>();
var beaconStateAccessor = testServiceProvider.GetService <BeaconStateAccessor>();
ICryptographyService cryptographyService = testServiceProvider.GetService <ICryptographyService>();
var voluntaryExitRoot = cryptographyService.HashTreeRoot(voluntaryExit);
var domain = beaconStateAccessor.GetDomain(state, signatureDomains.VoluntaryExit, voluntaryExit.Epoch);
var signingRoot = beaconChainUtility.ComputeSigningRoot(voluntaryExitRoot, domain);
var signature = TestSecurity.BlsSign(signingRoot, privateKey);
return(new SignedVoluntaryExit(voluntaryExit, signature));
}
public static SignedBeaconBlockHeader SignBlockHeader(IServiceProvider testServiceProvider, BeaconState state, BeaconBlockHeader header, byte[] privateKey)
{
SignatureDomains signatureDomains = testServiceProvider.GetService <IOptions <SignatureDomains> >().Value;
IBeaconChainUtility beaconChainUtility = testServiceProvider.GetService <IBeaconChainUtility>();
BeaconStateAccessor beaconStateAccessor = testServiceProvider.GetService <BeaconStateAccessor>();
ICryptographyService cryptographyService = testServiceProvider.GetService <ICryptographyService>();
Root headerRoot = cryptographyService.HashTreeRoot(header);
Domain domain = beaconStateAccessor.GetDomain(state, signatureDomains.BeaconProposer, Epoch.None);
Root signingRoot = beaconChainUtility.ComputeSigningRoot(headerRoot, domain);
BlsSignature signature = TestSecurity.BlsSign(signingRoot, privateKey);
return(new SignedBeaconBlockHeader(header, signature));
}
private BlsSignature GetEpochSignature(IServiceProvider testServiceProvider, byte[] privateKey, ForkVersion forkVersion, Slot slot)
{
SignatureDomains signatureDomains = testServiceProvider.GetService <IOptions <SignatureDomains> >().Value;
IBeaconChainUtility beaconChainUtility = testServiceProvider.GetService <IBeaconChainUtility>();
var domain = beaconChainUtility.ComputeDomain(signatureDomains.Randao, forkVersion);
var epoch = beaconChainUtility.ComputeEpochAtSlot(slot);
var epochRoot = epoch.HashTreeRoot();
var epochSigningRoot = beaconChainUtility.ComputeSigningRoot(epochRoot, domain);
BLSParameters parameters = new BLSParameters()
{
PrivateKey = privateKey
};
BLS bls = BLS.Create(parameters);
var destination = new Span <byte>(new byte[96]);
bls.TrySignData(epochSigningRoot.AsSpan(), destination, out var bytesWritten);
var signature = new BlsSignature(destination.ToArray());
return(signature);
}
public static BeaconBlock BuildEmptyBlock(IServiceProvider testServiceProvider, BeaconState state, Slot slot, BlsSignature randaoReveal)
{
//if (slot) is none
TimeParameters timeParameters = testServiceProvider.GetService <IOptions <TimeParameters> >().Value;
SignatureDomains signatureDomains = testServiceProvider.GetService <IOptions <SignatureDomains> >().Value;
ICryptographyService cryptographyService = testServiceProvider.GetService <ICryptographyService>();
IBeaconChainUtility beaconChainUtility = testServiceProvider.GetService <IBeaconChainUtility>();
BeaconStateAccessor beaconStateAccessor = testServiceProvider.GetService <BeaconStateAccessor>();
BeaconStateTransition beaconStateTransition = testServiceProvider.GetService <BeaconStateTransition>();
Eth1Data eth1Data = new Eth1Data(Root.Zero, state.Eth1DepositIndex, Bytes32.Zero);
Root stateRoot = !state.LatestBlockHeader.StateRoot.Equals(Root.Zero)
? state.LatestBlockHeader.StateRoot
: cryptographyService.HashTreeRoot(state);
BeaconBlockHeader previousBlockHeader = new BeaconBlockHeader(state.LatestBlockHeader.Slot,
state.LatestBlockHeader.ParentRoot, stateRoot, state.LatestBlockHeader.BodyRoot);
Root previousBlockHashTreeRoot = cryptographyService.HashTreeRoot(previousBlockHeader);
if (randaoReveal.Equals(BlsSignature.Zero))
{
Epoch blockEpoch = beaconChainUtility.ComputeEpochAtSlot(slot);
ValidatorIndex proposerIndex;
if (slot == state.Slot)
{
proposerIndex = beaconStateAccessor.GetBeaconProposerIndex(state);
}
else
{
Epoch stateEpoch = beaconChainUtility.ComputeEpochAtSlot(state.Slot);
if (blockEpoch > stateEpoch + 1)
{
Console.WriteLine("WARNING: Block slot (epoch {0}) far away from state (epoch {1}), and no proposer index manually given."
+ " Signing block is slow due to transition for proposer index calculation.", blockEpoch, stateEpoch);
}
// use stub state to get proposer index of future slot
BeaconState stubState = BeaconState.Clone(state);
beaconStateTransition.ProcessSlots(stubState, slot);
proposerIndex = beaconStateAccessor.GetBeaconProposerIndex(stubState);
}
byte[][] privateKeys = TestKeys.PrivateKeys(timeParameters).ToArray();
byte[] privateKey = privateKeys[(int)(ulong)proposerIndex];
Domain randaoDomain = beaconStateAccessor.GetDomain(state, signatureDomains.Randao, blockEpoch);
Root epochHashTreeRoot = cryptographyService.HashTreeRoot(blockEpoch);
Root randaoSigningRoot = beaconChainUtility.ComputeSigningRoot(epochHashTreeRoot, randaoDomain);
randaoReveal = TestSecurity.BlsSign(randaoSigningRoot, privateKey);
}
BeaconBlock emptyBlock = new BeaconBlock(slot,
previousBlockHashTreeRoot,
Root.Zero,
new BeaconBlockBody(
randaoReveal,
eth1Data,
new Bytes32(),
Array.Empty <ProposerSlashing>(),
Array.Empty <AttesterSlashing>(),
Array.Empty <Attestation>(),
Array.Empty <Deposit>(),
Array.Empty <SignedVoluntaryExit>()
));
return(emptyBlock);
}