public BlockConsensusRequest CreateRequest(MinerWallet wallet)
{
lock (SyncRoot)
{
if (!Valid) throw new InvalidOperationException();
if (request == null)
{
request = new BlockConsensusRequest
{
PrevHash = PrevHash,
Miner = my_pubkey,
NonceHash = NonceHashes[my_pubkey],
TransactionHashes = TransactionHashes.ToArray()
};
SplitSecret secret = SecretSharing.Split(Nonces[my_pubkey].ToArray(), (Miners.Length - 1) / 2 + 1);
for (int i = 0; i < Miners.Length; i++)
{
if (Miners[i].Equals(my_pubkey)) continue;
byte[] aeskey = wallet.GetAesKey(Miners[i]);
byte[] iv = aeskey.Take(16).ToArray();
byte[] piece = secret.GetShare(i + 1).ToArray();
using (AesManaged aes = new AesManaged())
using (ICryptoTransform encryptor = aes.CreateEncryptor(aeskey, iv))
{
piece = encryptor.TransformFinalBlock(piece, 0, piece.Length);
}
Array.Clear(aeskey, 0, aeskey.Length);
Array.Clear(iv, 0, iv.Length);
request.NoncePieces.Add(Miners[i], piece);
}
}
return request;
}
}
public void AddRequest(BlockConsensusRequest request, MinerWallet wallet)
{
lock (SyncRoot)
{
if (request.PrevHash != PrevHash) return;
if (request.Miner == my_pubkey) return;
if (NoncePieces.ContainsKey(request.Miner)) return;
byte[] aeskey = wallet.GetAesKey(request.Miner);
byte[] piece = request.NoncePieces[my_pubkey];
using (AesManaged aes = new AesManaged())
using (ICryptoTransform decryptor = aes.CreateDecryptor(aeskey, request.IV))
{
piece = decryptor.TransformFinalBlock(piece, 0, piece.Length);
}
Array.Clear(aeskey, 0, aeskey.Length);
NoncePieces.Add(request.Miner, new List<FiniteFieldPoint>());
NoncePieces[request.Miner].Add(FiniteFieldPoint.DeserializeFrom(piece));
NonceHashes.Add(request.Miner, request.NonceHash);
TransactionHashes.UnionWith(request.TransactionHashes);
action_request.CheckPredicate();
}
}
