public static DappTransactionBlock CreateFromBlock(Block genesisBlock, Account genesisAccount, Dapp dapp)
{
var sender = AccountHelper.GetAccount(CryptoHelper.GenerateSecret());
foreach (var transaction in genesisBlock.Transactions)
{
if (transaction.Type == TransactionType.Dapp)
{
var asset = (DappAsset) transaction.Asset;
if (asset != null)
{
if (asset.Dapp.Name == dapp.Name )
{
throw new DappException(string.Format("Dapp with name {0} already exist", dapp.Name));
}
if (asset.Dapp.Git == dapp.Git)
{
throw new DappException(string.Format("Dapp with git {0} already exist", dapp.Git));
}
if (asset.Dapp.Link == dapp.Link)
{
throw new DappException(string.Format("Dapp with link {0} already exist", dapp.Link));
}
}
}
}
var dappTransaction = new Transaction
{
Type = TransactionType.Dapp,
Amount = 0,
Fee = 0,
Timestamp = 0,
RecipientId = null,
SenderId = genesisAccount.Address.IdString,
SenderPublicKey = genesisAccount.Address.KeyPair.PublicKey.ToHex(),
Asset = new DappAsset
{
Dapp = dapp
}
};
var dappBytes = dappTransaction.GetBytes();
dappTransaction.Signature = CryptoHelper.Sign(dappBytes, genesisAccount.Address.KeyPair.PrivateKey).ToHex();
dappTransaction.Id = CryptoHelper.GetId(dappBytes);
genesisBlock.PayloadLength += dappBytes.Length;
var payloadBytes = genesisBlock.PayloadHash.FromHex();
var trBytes = new byte[payloadBytes.Length + dappBytes.Length];
Buffer.BlockCopy(payloadBytes, 0, trBytes, 0, payloadBytes.Length);
Buffer.BlockCopy(dappBytes, payloadBytes.Length, trBytes, 0, dappBytes.Length);
var trHash = CryptoHelper.Sha256(trBytes);
genesisBlock.Transactions.Add(dappTransaction);
genesisBlock.NumberOfTransactions++;
genesisBlock.GeneratorPublicKey = sender.Address.KeyPair.PublicKey.ToHex();
var blockBytes = genesisBlock.GetBytes();
genesisBlock.BlockSignature = CryptoHelper.Sign(blockBytes, sender.Address.KeyPair.PublicKey).ToHex();
genesisBlock.Id = CryptoHelper.GetId(blockBytes).ToString();
return new DappTransactionBlock
{
Block = genesisBlock,
Dapp = dappTransaction
};
}
public static Block CreateNewBlock(Account genesisAccount, Dapp dapp)
{
var transactions = new List<Transaction>();
var delegates = new List<Account>();
var sender = AccountHelper.GetAccount(CryptoHelper.GenerateSecret());
long totalAmount = 0;
var balTransaction = new Transaction
{
Type = TransactionType.Send,
Amount = 10000000000000000,
Fee = 0,
Timestamp = 0,
RecipientId = genesisAccount.Address.IdString,
SenderId = sender.Address.IdString,
SenderPublicKey = sender.Address.KeyPair.PublicKey.ToHex()
};
totalAmount += balTransaction.Amount;
var bytes = balTransaction.GetBytes();
balTransaction.Signature = CryptoHelper.Sign(bytes, sender.Address.KeyPair.PrivateKey).ToHex();
balTransaction.Id = CryptoHelper.GetId(sender.Address.KeyPair.PublicKey);
transactions.Add(balTransaction);
for (int index = 0; index < Constants.ActiveDelegates; index++)
{
var delegateSecret = CryptoHelper.GenerateSecret();
var delAccount = AccountHelper.GetAccount(delegateSecret);
delegates.Add(delAccount);
var userName = string.Format("genesisDelegate{0}", index + 1);
var delTransaction = new Transaction
{
Type = TransactionType.Delegate,
Amount = 0,
Fee = 0,
Timestamp = 0,
RecipientId = null,
SenderId = delAccount.Address.IdString,
SenderPublicKey = delAccount.Address.KeyPair.PublicKey.ToHex(),
Asset = new DelegateUsernameAsset
{
Delegate = new DelegateUsername
{
Username = userName
}
}
};
var delBytes = delTransaction.GetBytes();
delTransaction.Signature = CryptoHelper.Sign(delBytes, delAccount.Address.KeyPair.PrivateKey).ToHex();
delTransaction.Id = CryptoHelper.GetId(delBytes);
transactions.Add(delTransaction);
}
var votes = delegates.Select(vote => string.Format("+{0}", vote.Address.KeyPair.PublicKey.ToHex()));
var voteAsset = new DelegateVoteAsset();
voteAsset.Votes.AddRange(votes);
var voteTransaction = new Transaction
{
Type = TransactionType.Vote,
Amount = 0,
Fee = 0,
Timestamp = 0,
RecipientId = genesisAccount.Address.IdString,
SenderId = genesisAccount.Address.IdString,
SenderPublicKey = genesisAccount.Address.KeyPair.PublicKey.ToHex(),
Asset = voteAsset
};
var voteBytes = voteTransaction.GetBytes();
voteTransaction.Signature = CryptoHelper.Sign(voteBytes, genesisAccount.Address.KeyPair.PrivateKey).ToHex();
voteTransaction.Id = CryptoHelper.GetId(voteBytes);
transactions.Add(voteTransaction);
var dappTransaction = new Transaction
{
Type = TransactionType.Dapp,
Amount = 0,
Fee = 0,
Timestamp = 0,
RecipientId = null,
SenderId = genesisAccount.Address.IdString,
SenderPublicKey = genesisAccount.Address.KeyPair.PublicKey.ToHex(),
Asset = new DappAsset
{
Dapp = dapp
}
};
var dappBytes = dappTransaction.GetBytes();
dappTransaction.Signature = CryptoHelper.Sign(dappBytes, genesisAccount.Address.KeyPair.PrivateKey).ToHex();
dappTransaction.Id = CryptoHelper.GetId(dappBytes);
transactions.Add(dappTransaction);
var sortedTransactions = transactions.OrderBy(t => (int) t.Type).ThenBy(t => t.Amount).ToList();
var payloadLength = 0;
var hashBuf = new List<byte>();
foreach (var sortedTransaction in sortedTransactions)
{
var trBytes = sortedTransaction.GetBytes();
payloadLength += trBytes.Length;
hashBuf.AddRange(trBytes);
}
var payloadHash = CryptoHelper.Sha256(hashBuf.ToArray());
var block = new Block
{
Version = 0,
TotalAmount = 0,
TotalFee = 0,
PayloadHash = payloadHash.ToHex(),
Timestamp = 0,
NumberOfTransactions = sortedTransactions.Count,
PayloadLength = payloadLength,
PreviousBlock = null,
GeneratorPublicKey = sender.Address.KeyPair.PublicKey.ToHex(),
Transactions = sortedTransactions,
Height = 1
};
var blockBytes = block.GetBytes();
block.BlockSignature = CryptoHelper.Sign(blockBytes, sender.Address.KeyPair.PrivateKey).ToHex();
block.Id = CryptoHelper.GetId(blockBytes).ToString();
return block;
}
