/// <summary>
/// Returns the ArgonHasher with the optimal specs for this PC.
/// </summary>
public static Argon2Hasher GetBestSettings(HasherConfiguration hasherConfiguration)
{
/*int tmp;
*
* if (hasherConfiguration.RamToUseIn_kB == null)
* {
* tmp = HashUtilities.GetActualFreeMemory() * 25 / 100 / Environment.ProcessorCount;
* }
* else
* {
* tmp = (int)hasherConfiguration.RamToUseIn_kB / Environment.ProcessorCount;
* }
* var m = tmp > minimumMemory ? tmp : minimumMemory;*/
const int minimumMemory = 64 * 1024;
var argon2 = new Argon2Hasher
{
DegreeOfParallelism = hasherConfiguration.ProcessorsToUse == 0 ? Environment.ProcessorCount / 2 : hasherConfiguration.ProcessorsToUse,
MemorySize = 1024,
Iterations = 1,
};
Log.Info("Calculating the optimal parameters...");
var tempArray = new byte[16];
long elapsedMs = -1;
while (!(hasherConfiguration.HashingMinimumTimeWait <= elapsedMs && argon2.MemorySize > minimumMemory))
{
var watch = System.Diagnostics.Stopwatch.StartNew();
argon2.HashWithSpec(tempArray, tempArray);
watch.Stop();
elapsedMs = watch.ElapsedMilliseconds;
argon2.MemorySize = elapsedMs < hasherConfiguration.HashingMaximumTimeWait ?
Convert.ToInt32(argon2.MemorySize * 1.1) : Convert.ToInt32(argon2.MemorySize * 0.9);
}
Log.Info($"The resultant parameters in {elapsedMs}ms are: {argon2.GetEncodedHash()}");
return(argon2);
}
public LoginRequestHandler(IAccountService accountService, Argon2Hasher argon2, LoginConfiguration loginConfiguration)
{
_accountService = accountService;
_argon2 = argon2;
_hasherConfiguration = loginConfiguration.HasherConfiguration;
}
