public bool validate(CBlock <string> prevB, CBlock <string> newB)
{
bool valid = true;
string newHash = getSHA(newB.index.ToString() + newB.previousHash + newB.data + newB.date.ToString());
if (prevB.index + 1 != newB.index)
{
valid = false;
throw new Exception("index");
}
if (prevB.hash != newB.previousHash)
{
valid = false;
throw new Exception("index");
}
if (newHash != newB.hash)
{
valid = false;
throw new Exception("index");
}
/*if (prevB.index + 1 != newB.index || prevB.hash != newB.previousHash || newHash != newB.hash)
* {
* valid = false;
* }*/
return(valid);
}
public CBlockChain(string prevHash, string data, DateTime date)
{
current = 0;
string hash = getHash(current, prevHash, data, date);
firstHash = hash;
CBlock <string> b = new CBlock <string>(current, prevHash, hash, data, date);
Chain.Add(b);
current++;
}
static void list()
{
Console.Clear();
foreach (CBlock <string> c in chain.Chain)
{
CBlock <string> ch = c;
Console.WriteLine($"Block { ch.index }: { ch.data }");
}
Console.WriteLine("");
}
static void add()
{
Console.Clear();
Console.Write("Data: ");
string data = Console.ReadLine();
Console.Clear();
CBlock <string> c = chain.AddBlock(currHash, data, DateTime.Now);
Console.WriteLine($"Added Block({ c.data }, { c.date.ToString() }, { c.hash })\n");
currHash = c.hash;
}
public CBlock <string> AddBlock(string prevHash, string data, DateTime date)
{
string hash = getHash(current, prevHash, data, date);
CBlock <string> b = new CBlock <string>(current, prevHash, hash, data, date);
CBlock <string> o = (CBlock <string>)Chain[current - 1];
if (validate(o, b))
{
Chain.Add(b);
current++;
}
else
{
throw new Exception("Chain not valid");
}
return(b);
}
