/// <summary>
/// generate one time password key
/// </summary>
/// <returns></returns>
public static string GenerateOTPKey()
{
OathNet.Key key = new OathNet.Key();
return key.Base32;
}
/// <summary>
/// generate one time password for sms
/// </summary>
/// <param name="counter">counter</param>
/// <returns></returns>
public static string GenerateSmsOTP(string keyStr, int counter)
{
int otpDigits = 6;
var key = new OathNet.Key(keyStr);
var otp = new OathNet.CounterBasedOtpGenerator(key, otpDigits);
return otp.GenerateOtp(counter);
}
/// <summary>
/// generate one time password for google authentication
/// </summary>
/// <param name="keyStr">keyStr</param>
/// <returns></returns>
public static string GenerateGoogleAuthOTP(string keyStr)
{
int otpDigits = 6;
var key = new OathNet.Key(keyStr);
var otp = new OathNet.TimeBasedOtpGenerator(key, otpDigits);
return otp.GenerateOtp(DateTime.UtcNow);
}
