private static byte[] GenerateHash(DataForGeningHash dataForGeningHash)
{
using (SHA256 sha = new SHA256Managed())
using (MemoryStream stream = new MemoryStream())
using (BinaryWriter writer = new BinaryWriter(stream))
{
if (dataForGeningHash.Block.Nonce == 0)
{
// Is only used once to generate the hash.
writer.Write(dataForGeningHash.MinersPublicKey);
writer.Write(dataForGeningHash.Block.Data);
writer.Write(dataForGeningHash.Block.TimeStamp.ToBinary());
writer.Write(dataForGeningHash.Block.PreviousHash);
}
if (dataForGeningHash.FailedHash != null)
{
// By including the previous failedHash we force
// serial validation.
writer.Write(dataForGeningHash.FailedHash);
}
writer.Write(dataForGeningHash.Block.Nonce);
var streamArray = stream.ToArray();
return(sha.ComputeHash(streamArray));
}
}
public static byte[] MineHash(IBlock block, byte[] minersPublicKey)
{
if (Difficulty == null)
{
throw new ArgumentNullException(nameof(Difficulty));
}
byte[] hash = new byte[0];
int d = Difficulty.Length;
DataForGeningHash dataForGeningHash = new DataForGeningHash();
dataForGeningHash.Block = block;
dataForGeningHash.MinersPublicKey = minersPublicKey;
while (!hash.Take(d).SequenceEqual(Difficulty) && block.Nonce <= int.MaxValue)
{
dataForGeningHash.Block.Nonce++;
hash = GenerateHash(dataForGeningHash);
dataForGeningHash.FailedHash = hash;
}
return(hash);
}
