Blog.TokenAuthGettingStarted\Startup.Auth.cs

    app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AutomaticAuthenticate = true,
                AutomaticChallenge = true,
                AuthenticationScheme = "Cookie",
                CookieName = Configuration.GetSection("TokenAuthentication:CookieName").Value,
                TicketDataFormat = new CustomJwtDataFormat(
                    SecurityAlgorithms.HmacSha256,
                    tokenValidationParameters)
            });