private static string Part2(long worksize, int nZeros, int passwordLength)
{
Dictionary <int, Tuple <long, string> > hashes = new Dictionary <int, Tuple <long, string> >();
int hashesFound = 0;
long largestIndex = 0;
string zeros = new string('0', nZeros);
bool done = false;
Thread hacking = new Thread(() => HackingPart2(ref done, passwordLength, hashes));
hacking.Start();
Parallel.ForEach(MD5Ext.YieldWhile(() => hashesFound < passwordLength, i => Tuple.Create(i * worksize, (i + 1) * worksize)), bound =>
{
MD5 md5 = MD5.Create();
long lowerbound = bound.Item1, upperbound = bound.Item2;
for (long index = lowerbound; index < upperbound && (hashesFound < passwordLength || index < Interlocked.Read(ref largestIndex)); index++)
{
string hash = md5.ComputeHash(Encoding.ASCII.GetBytes(DoorID + index)).MD5String();
if (hash.StartsWith(zeros))
{
int key = Convert.ToInt32(hash.Substring(5, 1), 16);
if (key < passwordLength)
{
lock (hashes)
{
bool contains = hashes.ContainsKey(key);
if (!contains || hashes[key].Item1 > index - 1)
{
hashes[key] = Tuple.Create(index - 1, hash);
Monitor.Pulse(hashes);
if (index - 1 > Interlocked.Read(ref largestIndex))
{
Interlocked.Exchange(ref largestIndex, index - 1);
}
if (!contains)
{
Interlocked.Increment(ref hashesFound);
}
}
}
}
}
}
});
lock (hashes)
{
done = true;
Monitor.Pulse(hashes);
}
hacking.Join();
return(new string(hashes.Take(passwordLength).OrderBy(hash => hash.Key).Select(hash => hash.Value.Item2[6]).ToArray()));
}
// Calculate part 1 in parallel
private static string Part1(long worksize, int nZeros, int passwordLength)
{
SortedList <long, string> hashes = new SortedList <long, string>();
int hashesFound = 0;
long largestIndex = 0;
string zeros = new string('0', nZeros);
bool done = false;
Thread hacking = new Thread(() => HackingPart1(ref done, passwordLength, hashes));
hacking.Start();
Parallel.ForEach(MD5Ext.YieldWhile(() => hashesFound < passwordLength, i => Tuple.Create(i * worksize, (i + 1) * worksize)), bound =>
{
MD5 md5 = MD5.Create();
long lowerbound = bound.Item1, upperbound = bound.Item2;
for (long index = lowerbound; index < upperbound && (hashesFound < passwordLength || index < Interlocked.Read(ref largestIndex)); index++)
{
string hash = md5.ComputeHash(Encoding.ASCII.GetBytes(DoorID + index)).MD5String();
if (hash.StartsWith(zeros))
{
lock (hashes)
{
hashes.Add(index - 1, hash);
Monitor.Pulse(hashes);
if (index - 1 > largestIndex)
{
largestIndex = index - 1;
}
Interlocked.Increment(ref hashesFound);
}
}
}
});
lock (hashes)
{
done = true;
Monitor.Pulse(hashes);
}
hacking.Join();
return(new string(hashes.Take(passwordLength).Select(hash => hash.Value[5]).ToArray()));
}
