Token-Based Authentication without username and password

Question

Hi my question is How To Create Web API With Token-Based Authentication without username and password Thanks

Vishal Joshi · Answer

In this case you can use Authorization Filter. Please check below code need to added Authorization Filter in API Project: public class APIProjectKeyBasedAuthenticationAttribute : AuthorizationFilterAttribute { public override void OnAuthorization(HttpActionContext actionContext) { IEnumerable string > apiKeyHeaderValues = null ; if (actionContext.Request.Headers.TryGetValues( X-ApiKey  out apiKeyHeaderValues)) { var sourceApiKeyHeaderValue = apiKeyHeaderValues.First(); var destinationApiKeyValue = KeyValue ; if (destinationApiKeyValue != sourceApiKeyHeaderValue) actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.Forbidden Bad API Key ); } else { actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.Unauthorized); } } } Call API from using same key/token as below code: public T GetRequest ( string URL) { try { HttpClient _httpClient = new HttpClient(); string domain = string .Empty; _httpClient.DefaultRequestHeaders.Add( X-ApiKey  KeyValue ); var response = _httpClient.GetAsync(domain + URL).Result; if (response.StatusCode == HttpStatusCode.OK) { var responseContent = response.Content.ReadAsStringAsync(); var responseobj = JsonConvert.DeserializeObject (responseContent.Result); return responseobj; } else { Console.WriteLine( Error occured while calling TimeMachine API. + ;URL: + URL + ; ); return default (T); } } catch (Exception ex) { Console.WriteLine( URL: + URL ex); return default (T); } } So in this case it won't require username and password but based on token we set it will authenticate.

Uttam Kumar · Answer

You can create user specific JWT (JSON Web Token) for authentication and authorisation

Ritu · Answer

I have no username and password.

Amit Mohanty · Answer

Check the below link https://www.c-sharpcorner.com/article/token-based-authentication-using-web-api-2-owin-and-identity/