public void QuickStartGenesis()
{
var quickStartParameters = _quickStartParameterOptions.CurrentValue;
_logger.LogWarning(0, "Mocked quick start with genesis time {GenesisTime} and {ValidatorCount} validators.",
quickStartParameters.GenesisTime, quickStartParameters.ValidatorCount);
var miscellaneousParameters = _miscellaneousParameterOptions.CurrentValue;
var gweiValues = _gweiValueOptions.CurrentValue;
var initialValues = _initialValueOptions.CurrentValue;
var timeParameters = _timeParameterOptions.CurrentValue;
var stateListLengths = _stateListLengthOptions.CurrentValue;
var maxOperationsPerBlock = _maxOperationsPerBlockOptions.CurrentValue;
var signatureDomains = _signatureDomainOptions.CurrentValue;
// Fixed amount
var amount = gweiValues.MaximumEffectiveBalance;
// Build deposits
var depositDataList = new List <DepositData>();
var deposits = new List <Deposit>();
for (var validatorIndex = 0uL; validatorIndex < quickStartParameters.ValidatorCount; validatorIndex++)
{
var privateKey = GeneratePrivateKey(validatorIndex);
// Public Key
var blsParameters = new BLSParameters()
{
PrivateKey = privateKey
};
using var bls = BLS.Create(blsParameters);
var publicKeyBytes = new Span <byte>(new byte[BlsPublicKey.Length]);
bls.TryExportBLSPublicKey(publicKeyBytes, out var publicKeybytesWritten);
var publicKey = new BlsPublicKey(publicKeyBytes);
// Withdrawal Credentials
var withdrawalCredentialBytes = _cryptographyService.Hash(publicKey.AsSpan()).AsSpan().ToArray();
withdrawalCredentialBytes[0] = initialValues.BlsWithdrawalPrefix;
var withdrawalCredentials = new Hash32(withdrawalCredentialBytes);
// Build deposit data
var depositData = new DepositData(publicKey, withdrawalCredentials, amount);
// Sign deposit data
var depositDataSigningRoot = depositData.SigningRoot();
var domain = _beaconChainUtility.ComputeDomain(signatureDomains.Deposit);
var destination = new Span <byte>(new byte[96]);
bls.TrySignHash(depositDataSigningRoot.AsSpan(), destination, out var bytesWritten, domain.AsSpan());
var depositDataSignature = new BlsSignature(destination);
depositData.SetSignature(depositDataSignature);
// Deposit
// TODO: This seems a very inefficient way (copied from tests) as it recalculates the merkle tree each time
// (you only need to add one node)
// TODO: Add some tests around quick start, then improve
var index = depositDataList.Count;
depositDataList.Add(depositData);
var root = depositDataList.HashTreeRoot((ulong)1 << _chainConstants.DepositContractTreeDepth);
var allLeaves = depositDataList.Select(x => x.HashTreeRoot());
var tree = CalculateMerkleTreeFromLeaves(allLeaves);
var merkleProof = GetMerkleProof(tree, index, 32);
var proof = new List <Hash32>(merkleProof);
var indexBytes = new Span <byte>(new byte[32]);
BitConverter.TryWriteBytes(indexBytes, (ulong)index + 1);
if (!BitConverter.IsLittleEndian)
{
indexBytes.Slice(0, 8).Reverse();
}
var indexHash = new Hash32(indexBytes);
proof.Add(indexHash);
var leaf = depositData.HashTreeRoot();
_beaconChainUtility.IsValidMerkleBranch(leaf, proof, _chainConstants.DepositContractTreeDepth + 1, (ulong)index, root);
var deposit = new Deposit(proof, depositData);
_logger.LogDebug("Quick start adding deposit for mocked validator {ValidatorIndex} with public key {PublicKey}.",
validatorIndex, publicKey);
deposits.Add(deposit);
}
var genesisState = _beaconChain.InitializeBeaconStateFromEth1(quickStartParameters.Eth1BlockHash, quickStartParameters.Eth1Timestamp, deposits);
// We use the state directly, and don't test IsValid
genesisState.SetGenesisTime(quickStartParameters.GenesisTime);
var store = _forkChoice.GetGenesisStore(genesisState);
_logger.LogDebug("Quick start genesis store created with genesis time {GenesisTime}.", store.GenesisTime);
}
public void QuickStartGenesis()
{
QuickStartParameters quickStartParameters = _quickStartParameterOptions.CurrentValue;
if (_logger.IsWarn())
{
Log.MockedQuickStart(_logger, quickStartParameters.GenesisTime, quickStartParameters.ValidatorCount, null);
}
GweiValues gweiValues = _gweiValueOptions.CurrentValue;
InitialValues initialValues = _initialValueOptions.CurrentValue;
SignatureDomains signatureDomains = _signatureDomainOptions.CurrentValue;
// Fixed amount
Gwei amount = gweiValues.MaximumEffectiveBalance;
// Build deposits
List <DepositData> depositDataList = new List <DepositData>();
List <Deposit> deposits = new List <Deposit>();
for (ulong validatorIndex = 0uL; validatorIndex < quickStartParameters.ValidatorCount; validatorIndex++)
{
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
byte[] withdrawalCredentialBytes = _cryptographyService.Hash(publicKey.AsSpan()).AsSpan().ToArray();
withdrawalCredentialBytes[0] = initialValues.BlsWithdrawalPrefix;
Hash32 withdrawalCredentials = new Hash32(withdrawalCredentialBytes);
// Build deposit data
DepositData depositData = new DepositData(publicKey, withdrawalCredentials, amount);
// Sign deposit data
Hash32 depositDataSigningRoot = _cryptographyService.SigningRoot(depositData);
Domain domain = _beaconChainUtility.ComputeDomain(signatureDomains.Deposit);
byte[] destination = new byte[96];
bls.TrySignHash(depositDataSigningRoot.AsSpan(), destination, out int bytesWritten, domain.AsSpan());
BlsSignature depositDataSignature = new BlsSignature(destination);
depositData.SetSignature(depositDataSignature);
// Deposit
// TODO: This seems a very inefficient way (copied from tests) as it recalculates the merkle tree each time
// (you only need to add one node)
// TODO: Add some tests around quick start, then improve
int index = depositDataList.Count;
depositDataList.Add(depositData);
//int depositDataLength = (ulong) 1 << _chainConstants.DepositContractTreeDepth;
Hash32 root = _cryptographyService.HashTreeRoot(depositDataList);
IEnumerable <Hash32> allLeaves = depositDataList.Select(x => _cryptographyService.HashTreeRoot(x));
IList <IList <Hash32> > tree = CalculateMerkleTreeFromLeaves(allLeaves);
IList <Hash32> merkleProof = GetMerkleProof(tree, index, 32);
List <Hash32> proof = new List <Hash32>(merkleProof);
Span <byte> indexBytes = new Span <byte>(new byte[32]);
BitConverter.TryWriteBytes(indexBytes, (ulong)index + 1);
if (!BitConverter.IsLittleEndian)
{
indexBytes.Slice(0, 8).Reverse();
}
Hash32 indexHash = new Hash32(indexBytes);
proof.Add(indexHash);
Hash32 leaf = _cryptographyService.HashTreeRoot(depositData);
_beaconChainUtility.IsValidMerkleBranch(leaf, proof, _chainConstants.DepositContractTreeDepth + 1, (ulong)index, root);
Deposit deposit = new Deposit(proof, depositData);
if (_logger.IsEnabled(LogLevel.Debug))
{
LogDebug.QuickStartAddValidator(_logger, validatorIndex, publicKey.ToString().Substring(0, 12),
null);
}
deposits.Add(deposit);
}
BeaconState genesisState = _beaconChain.InitializeBeaconStateFromEth1(quickStartParameters.Eth1BlockHash, quickStartParameters.Eth1Timestamp, deposits);
// We use the state directly, and don't test IsValid
genesisState.SetGenesisTime(quickStartParameters.GenesisTime);
IStore store = _forkChoice.GetGenesisStore(genesisState);
if (_logger.IsEnabled(LogLevel.Debug))
{
LogDebug.QuickStartStoreCreated(_logger, store.GenesisTime, null);
}
}