public static void Main(string[] args)
{
/*
string user_salt = "NyfLZ6RJXWE1aHrrM5JRefMlipdBV0bCp";
string password = "******";
var pbkdf2 = new PBKDF2<HMACSHA512>(Encoding.ASCII.GetBytes(password), Encoding.ASCII.GetBytes(user_salt), 50);
var bytes = pbkdf2.GetBytes(128);
Console.WriteLine(String.Join("", bytes.Select(x => x.ToString("X2"))));
return;
*/
Console.WriteLine(PasswordHasher.GenerateSalt());
int iterations = 0;
int memoryBits = 22;
var chasher = new PasswordHasher("Qq48KGoFOXbZcBXDHZuqyjTP5oBfUy4N2iEHmL2NkIw=", memoryBits, iterations);
var startTime = DateTime.UtcNow;
string hash = chasher.Hash("foo1", "NyfLZ6RJXWE1aHrrM5JRefMlipdBV0bCp");
Console.WriteLine((DateTime.UtcNow - startTime).TotalMilliseconds);
Console.WriteLine(hash);
Console.WriteLine(chasher.MemoryUsage);
var hasher = new TestPasswordHasher("Qq48KGoFOXbZcBXDHZuqyjTP5oBfUy4N2iEHmL2NkIw=", memoryBits, iterations);
startTime = DateTime.UtcNow;
hash = hasher.Hash("foo1", "NyfLZ6RJXWE1aHrrM5JRefMlipdBV0bCp");
Console.WriteLine((DateTime.UtcNow - startTime).TotalMilliseconds);
Console.WriteLine(hash);
Console.WriteLine(hasher.MemoryUsage);
#if DEBUG
/* cell frequency */
if (!Directory.Exists("stats"))
Directory.CreateDirectory("stats");
CellFrequency(String.Format("cellfreq-{0}-{1}.txt", memoryBits, iterations), hasher.__hashArray);
/* xored cell frequency */
byte[] xored = new byte[hasher.MemoryUsage];
for (int i = 0; i < xored.Length; i++)
xored[i] = (byte)(hasher.__hashArray[i] ^ hasher._originalArray[i]);
Console.WriteLine("0 xor bytes: " + xored.Count(x => x == 0));
CellFrequency(String.Format("xor-cellfreq-{0}-{1}.txt", memoryBits, iterations), xored);
/* visit counts */
var chars = "0123456789abcdefghijklmnopqrstuvwxyz".ToCharArray();
System.IO.File.WriteAllText(String.Format(@"stats\hash-{0}-{1}.txt", memoryBits, iterations), String.Join("", hasher._visitCounts.Select(v => chars[v])));
/* depth, count, iterations */
_mixingHashes = hasher._hashes.Skip(1);
string prevHash = hasher._hashes[0];
_info[prevHash] = new HashTreeInfo
{
depth = 1,
count = 0,
iterations = 1
};
foreach(string nextHash in _mixingHashes)
{
_prevHash[nextHash] = prevHash;
prevHash = nextHash;
}
var depths = _mixingHashes.Select(h => GetTreeInfo(hasher, h).ToString());
System.IO.File.WriteAllLines(String.Format(@"stats\depths-{0}-{1}.txt", memoryBits, iterations), depths);
#endif
Console.ReadLine();
}
private static HashTreeInfo GetTreeInfo(TestPasswordHasher hasher, string hash)
{
if (_info.ContainsKey(hash))
return _info[hash];
HashTreeInfo info = new HashTreeInfo { depth = 0, count = 0, iterations = _info[_prevHash[hash]].iterations + 1 };
foreach (int index in hasher._hashToCells[hash])
{
IList<string> cellHashes = hasher._hashesPerCell[index];
for (int i = 0; i < cellHashes.Count && cellHashes[i] != hash; i++ )
{
HashTreeInfo childInfo = GetTreeInfo(hasher, cellHashes[i]);
if (childInfo.depth > info.depth)
info.depth = childInfo.depth;
info.count += childInfo.count + 1;
info.iterations += childInfo.iterations;
}
}
info.depth++;
_info[hash] = info;
return info;
}