ezauth

Dead simple user authentication for C# with support for 2FA.

Usage

• Add reference to ezauth.lib project.

• Or install via Nuget Install-Package ezauth.lib

  TOTP Example

  TOTP - Time-based One-Time Password is an algorithm that generates a one-time password based on a secret key and the current time.

  Defined in IETF RFC 6238, TOTP is usually used as a second factor in a 2FA setup.

  Users will need to have a TOTP client like Google Authenticator.

  Code Example

  using ezauth.lib.AuthProviders;
  
  // init new totp provider
  TOTPProvider totp = new TOTPProvider("ezauth_totp_test");
  
  // get the otp uri for sharing the secret with
  // a client e.g. Google Authenticator
  // Usually you'll encode this into a QR code (try QRCoder)
  string URI = totp.GetOTPURI();
  
  // validate the code given by the user for authentication
  AuthorizationData res = totp.Validate(user.username, input);
  
  // get the result of the Validate operation
  if (res.Result == AuthResult.VALIDATED) {
      Console.WriteLine("Your code was valid!");
      string token = res.AuthToken; // your JWT token for login later
  
  } else if (res.Result == AuthResult.INVALID_PASSCODE) {
      Console.WriteLine("Invalid code.");
  }