public (string Otp, string OtpVerificationToken) GenerateAndStoreOtp(OtpOptions otpOptions)
{
var otp = GenerateOtp(otpOptions);
var token = _otpStorage.PutOtp(otp);
return(otp, token);
}
public (string Otp, string OtpVerificationToken) GenerateAndStoreOtp(OtpOptions otpOptions)
{
var otp = GenerateOtp(otpOptions);
if (_otpStorage == null)
{
throw new ArgumentNullException(nameof(_otpStorage), $"No OTP Storage provided for storing OTP");
}
var token = _otpStorage.PutOtp(otp, otpOptions.Expiry);
return(otp, token);
}
private string GenerateOtpInternal(OtpOptions otpOptions)
{
if (!otpOptions.ShouldBeCryptographicallyStrong)
{
_randomProvider = new SimpleRandomProvider();
}
else
{
_randomProvider = new CryptoRandomProvider();
}
char[] charset = new char[] { };
if (otpOptions.OtpContents.HasFlag(OtpContents.Number))
{
charset = Enumerable.Range(0, 9).Select(x => char.Parse(x.ToString())).ToArray();
}
return(_randomProvider.GetRandom(otpOptions.Length, charset));
}
public string GenerateOtp(OtpOptions otpOptions)
{
return(GenerateOtpInternal(otpOptions));
}
