public static IAppBuilder UseApiKeyAuthentication(this IAppBuilder app, ApiKeyAuthenticationOptions options = null)
        {
            if (app == null)
            {
                throw new ArgumentNullException(nameof(app));
            }

            if (options == null)
            {
                options = new ApiKeyAuthenticationOptions();
            }

            app.Use <ApiKeyAuthenticationMiddleware>(app, options);
            app.UseStageMarker(PipelineStage.Authenticate);

            return(app);
        }
 public ApiKeyValidateIdentityContext(IOwinContext context, ApiKeyAuthenticationOptions options, String apiKey, String host)
 {
     Options = options;
     ApiKey  = apiKey;
     Host    = host;
 }