public static void BulkSpeedTest(HashInfo hashInfo)
{
Console.WriteLine("[BULK SPEED TEST]");
Console.WriteLine($"Frequency: {s_Frequency / 1e6d:F2} MHz");
Console.WriteLine($"Keys Length: {BST_SIZE} Bytes");
Console.WriteLine($"Repetitions: {BST_TRIALS}");
using (SpeedTestOptimizer())
{
for (Int32 i = 0; i < WARMUP_ITERATIONS; ++i)
{
GetAverageSpeed(hashInfo, BST_SIZE, BST_TRIALS, 0);
}
Double[] speed = new Double[8];
for (Int32 align = 0; align < 8; ++align)
{
speed[align] = GetAverageSpeed(hashInfo, BST_SIZE, BST_TRIALS, align);
Console.WriteLine($" - Alignment {align}: {FormatSpeed(speed[align])}");
}
Console.WriteLine($" - Average Speed: {FormatSpeed(StatsUtilities.Mean(speed))}");
}
}
private static Double GetAverageSpeed(HashInfo hashInfo, Int32 length, Int32 repetitions, Int32 align)
{
RandomXS r = new RandomXS();
Byte[] key = new Byte[length + 512];
unsafe
{
fixed(Byte *pin = key)
{
UInt64 pinValue = (UInt64)pin;
UInt64 alignValue = ((pinValue + 255ul) & 0xFFFFFFFFFFFFFF00ul) + (UInt64)align;
Int32 offset = (Int32)(alignValue - pinValue);
List <Double> results = new List <Double>(repetitions);
for (Int32 i = 0; i < repetitions; ++i)
{
r.NextBytes(key, offset, length);
Hash hash = hashInfo.Initializer((UInt32)i);
Double start = NativeMethods.GetTime();
hash.ComputeHash(key, offset, length);
Double end = NativeMethods.GetTime();
Double ms = ((end - start + 1.0d) * 1000.0d) / s_Frequency;
Double bps = (length * 1000.0d) / ms;
if (bps >= 0.0d)
{
results.Add(bps);
}
}
Double mean = StatsUtilities.Mean(results);
Double threshold = 2.0d * StatsUtilities.StandardDeviation(results, mean);
for (Int32 i = results.Count - 1; i >= 0; --i)
{
if (Math.Abs(results[i] - mean) > threshold)
{
results.RemoveAt(i);
}
}
return(StatsUtilities.Mean(results));
}
}
}
public static void DifferentialTest(HashInfo hashInfo)
{
RandomXS r = new RandomXS(0x000000B2u);
Int32 hashBytes = hashInfo.Length / 8;
Int32 hashBits = hashInfo.Length;
Console.WriteLine("[[ DIFFERENTIAL TEST ]]");
Console.WriteLine($"Maximum Errors: {DT_MAXIMUMERRORS}");
Boolean resultOverall = true;
for (Int32 i = 0; i < s_ParametersDT.Length; ++i)
{
dynamic p = s_ParametersDT[i];
Int32 keysBytes = p.KeysBytes;
Int32 keysBits = keysBytes * 8;
Byte[] key1 = new Byte[keysBytes];
Byte[] key2 = new Byte[keysBytes];
Int32 bits = p.Bits;
Int32 repetitions = p.Repetitions;
Int32 steps = repetitions / 10;
Double tests = StatsUtilities.ChooseUpToK(keysBits, p.Bits) * repetitions;
Double expectedCollisions = Math.Round(tests / Math.Pow(2.0d, hashBits));
Console.WriteLine($"> Bits: 1-{bits}");
Console.WriteLine($" Repetitions: {repetitions}");
Console.WriteLine($" Tests: {tests:F0}");
Console.WriteLine($" Expected Collisions: {expectedCollisions:F0}");
Console.Write(" Result: ");
Byte[] h2 = new Byte[hashBytes];
UInt64 skipped = 0;
List <Byte[]> diffs = new List <Byte[]>(DT_MAXIMUMERRORS);
for (Int32 j = 0; j < repetitions; ++j)
{
if ((j % steps) == 0)
{
Console.Write((skipped > 0) ? "!" : ".");
}
r.NextBytes(key1);
UnsafeBuffer.BlockCopy(key1, 0, key2, 0, keysBytes);
Hash hash = hashInfo.Initializer(r.NextValue());
Byte[] h1 = hash.ComputeHash(key1);
skipped += DifferentialTestRecursion(diffs, hash, keysBytes, key1, key2, hashBytes, h1, h2, 0, p.Bits);
}
Boolean result = true;
if (skipped > 0)
{
result = false;
Console.WriteLine(" FAILED");
Console.WriteLine(" - Errors Threshold Exceeded");
}
else
{
Int32 ignoredCollisions = DifferentialTestIgnored(diffs, ref result);
Console.WriteLine(result ? " PASSED" : " FAILED");
Console.WriteLine($" - Observed Collisions: {diffs.Count} ({ignoredCollisions} Ignored)");
}
resultOverall &= result;
}
Console.WriteLine($"Test Result: {(resultOverall ? "PASSED" : "FAILED")}");
}