private bool VerifySha256Hash(SHA256 sha256Hash, Blok blok, string hash)
{
var hashOfInput = this.GetSha256(sha256Hash, blok);
var compair = StringComparer.OrdinalIgnoreCase;
if (0 == compair.Compare(hashOfInput, hash))
{
return(true);
}
else
{
return(false);
}
}
public Blok NewBlock(Self self, int proof, string previousHash = null)
{
var blok = new Blok
{
Index = self.Cahin.Count + 1,
Timestamp = (int)(DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalSeconds,
Transaction = self.CurrentTransactions,
Proof = proof,
PreviousHash = self.Hash(self.LastBlok())
};
self.CurrentTransactions = new List <Transaction>( );
self.Cahin.Add(blok);
return(blok);
}
public string Hash(Blok blok)
{
using (var sha256Hash = SHA256.Create())
{
var hash = GetSha256(sha256Hash, blok);
if (VerifySha256Hash(sha256Hash, blok, hash))
{
return(hash);
}
else
{
return("not success");
}
}
}
private string GetSha256(SHA256 sha256Hash, Blok blok)
{
var formatter = new BinaryFormatter();
using (var stream = new MemoryStream())
{
formatter.Serialize(stream, blok);
byte [] data = stream.ToArray();
var hash = sha256Hash.ComputeHash(data);
var sBuilter = new StringBuilder();
foreach (var item in hash)
{
sBuilter.Append(item.ToString("x2"));
}
return(sBuilter.ToString());
}
}
