protected override async Task <AuthenticateResult> HandleAuthenticateAsync() { if (!Request.Headers.ContainsKey("Authorization")) { return(AuthenticateResult.Fail("Missing Authorization Header")); } var user = default(Client); try { var authHeader = AuthenticationHeaderValue.Parse(Request.Headers["Authorization"]); var credentialBytes = Convert.FromBase64String(authHeader.Parameter); var credentials = Encoding.UTF8.GetString(credentialBytes).Split(':'); var password = credentials[1]; var username = credentials[0]; user = await _authService.AuthenticateAsync(username, password); } catch { return(AuthenticateResult.Fail("Invalid Authorization Header")); } if (user == null) { return(AuthenticateResult.Fail("Invalid Username or Password")); } var claims = new List <Claim> { new Claim(ClaimTypes.NameIdentifier, user.Id.ToString()), new Claim(ClaimTypes.Name, user.Name), }; user.Methods.ForEach(m => claims.Add(new Claim(ClaimTypes.Role, m.Name))); var identity = new ClaimsIdentity(claims, Scheme.Name); var principal = new ClaimsPrincipal(identity); var ticket = new AuthenticationTicket(principal, Scheme.Name); return(AuthenticateResult.Success(ticket)); }