public static bool IsValidSecret(string secret, AuthenticatorType type)
{
if (String.IsNullOrEmpty(secret))
{
return(false);
}
if (type.IsHmacBased())
{
try
{
var output = Base32.Rfc4648.Decode(secret);
return(output.Length > 0);
}
catch
{
return(false);
}
}
if (type == AuthenticatorType.MobileOtp)
{
return(secret.Length >= MobileOtp.SecretMinLength);
}
throw new ArgumentOutOfRangeException(nameof(type));
}
public static bool IsValidSecret(string secret, AuthenticatorType type)
{
if (String.IsNullOrEmpty(secret))
{
return(false);
}
if (type.IsHmacBased())
{
try
{
return(Base32Encoding.ToBytes(secret).Length > 0);
}
catch (ArgumentException)
{
return(false);
}
}
if (type == AuthenticatorType.MobileOtp)
{
return(secret.Length >= MobileOtp.SecretMinLength);
}
throw new ArgumentOutOfRangeException(nameof(type));
}
public static string CleanSecret(string input, AuthenticatorType type)
{
if (type.IsHmacBased())
{
input = input.ToUpper();
}
input = input.Replace(" ", "");
input = input.Replace("-", "");
return(input);
}