public bool CheckPassword(string deviceId, string password)
{
BlowfishCrypter crypter = new BlowfishCrypter();
string existingPassword = GenericData.GetPlayerData(deviceId, "password").ToUTF8String();
string checkedPassword = crypter.Crypt(password, existingPassword);
return(existingPassword == checkedPassword);
}
private void Decrypt(int characters, byte bit, int last = 0)
{
combination = new byte[255];
bool result = false;
string check = "";
while (!result)
{
for (int i = 0; i <= characters; i++)
{
for (int j = 32; j < 137; j++)
{
combination[i] = Convert.ToByte(j);
/*for (int k = 32; k < 137; k++)
* {
* combination[1] = Convert.ToByte(k);*/
check = System.Text.ASCIIEncoding.ASCII.GetString(combination);
result = BlowfishCrypter.CheckPassword(check, encrypted);
if (result)
{
break;
}
//}
}
}
}
if (result)
{
endtime = DateTime.Now;
MessageBox.Show("Started at: " + starttime.ToString() + " Ended at: " + endtime.ToString());
MessageBox.Show("Decrypted pass: "******"Done with character nr " + characters.ToString();
MessageBox.Show("Done with character nr " + characters.ToString());
Decrypt(characters, bit, last);
}
else
{
bit++;
Decrypt(characters, bit);
}
}
}
public bool EncryptUserPassword(string deviceId, string password)
{
var options = new CrypterOptions()
{
{ CrypterOption.Rounds, Configuration["PasswordRounds"] }
};
BlowfishCrypter crypter = new BlowfishCrypter();
var salt = crypter.GenerateSalt(options);
var results = crypter.Crypt(password, salt);
GenericData.SetPlayerData(deviceId, "password", results);
return(true);
}
public User ValidateUser(string email, string password)
{
var user = ((IUserRepository)_repository).GetByMail(email);
if (user == null)
{
return(null);
}
if (BlowfishCrypter.CheckPassword(password, user.Password))
{
return(user);
}
return(null);
}
private static void PwdSpeedTest()
{
Log.WriteLog("Determining the correct value for Rounds on this computer for saving passwords...");
System.Diagnostics.Stopwatch encryptTimer = new System.Diagnostics.Stopwatch();
int rounds = 6;
while (encryptTimer.ElapsedMilliseconds < 250)
{
rounds++;
var options = new CrypterOptions()
{
{ CrypterOption.Rounds, rounds }
};
encryptTimer.Restart();
BlowfishCrypter crypter = new BlowfishCrypter();
var salt = crypter.GenerateSalt(options);
var results = crypter.Crypt("anythingWillDo", salt);
encryptTimer.Stop();
Log.WriteLog("Time with Rounds:" + rounds + ": " + encryptTimer.ElapsedMilliseconds + "ms");
}
Log.WriteLog("Suggestion: Set the PasswordRounds configuration variable to " + rounds + " in PraxisMapper's appsettings.json file");
}
