Asp Core 1.1 share cookie Auth between application

Hi,

I try to share 2 authentication cookies between 2 applications.

In App1 : Startup.cs

            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationScheme = "Cookies",
                LoginPath = new PathString("/Account/Login"),
                AccessDeniedPath = new PathString("/Home/Forbidden"),
                AutomaticAuthenticate = true,
                AutomaticChallenge = true,
                CookieName = "ASPTest",
                ExpireTimeSpan = new TimeSpan(1, 0, 0) //1 hour
            });

And in App2 : Startup.cs

            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationScheme = "Cookies",
                LoginPath = new PathString("/Account/Login"),
                AccessDeniedPath = new PathString("/Home/Forbidden"),
                AutomaticAuthenticate = true,
                AutomaticChallenge = true,
                CookieName = "ASPTest",
            });

In Ap1 : AccountController.cs

       [HttpGet]
        public IActionResult Login(string returnUrl)
        {
            ViewData["ReturnUrl"] = returnUrl;
            return View();
        }

        [HttpPost]
        public async Task<IActionResult> Login(string username, string password, string returnUrl)
        {
            if (username == password)
            {
                var claims = new List<Claim>
        {
            new Claim("Read", "true"),
            new Claim(ClaimTypes.Name, "ayayalar"),
            new Claim(ClaimTypes.Sid, "12345")
        };

                var claimsIdentity = new ClaimsIdentity(claims, "password");
                var claimsPrinciple = new ClaimsPrincipal(claimsIdentity);

                await HttpContext.Authentication.SignInAsync("Cookies", claimsPrinciple,
                    new Microsoft.AspNetCore.Http.Authentication.AuthenticationProperties { IsPersistent = true});

                if (Url.IsLocalUrl(returnUrl))
                {
                    return Redirect(returnUrl);
                }

                return Redirect("~/");
            }

            return View();
        }

In both Ap1 and Ap2 : I check after logged in (tested without database and login == password)

        public IActionResult Index()
        {
            var t = HttpContext.User;

            return View();
        }

In Ap1 which allows to login and create cookie, the cookie is created and when going on Home/Index the t variable is feed from Cookie==> it works!
In Ap2  when going on Home/Index the t variable is not feed from Cookie ==> it fails !

In Mozilla I'm able to see the cookie created within both App1 and App2, but App2 seems not able to load it.

I tried to follow the link : https://docs.microsoft.com/en-us/aspnet/core/security/data-protection/compatibility/cookie-sharing but with no success as 

DataProtectionProvider = DataProtectionProvider.Create(new DirectoryInfo(@"c:\shared-auth-ticket-keys\"))

does not build.

Did I miss some obvious point when trying to get access the cookie created from Ap1 with Ap2 ? My goal is to create a cookie from Ap1, and get all Claims from Ap2.

Thank you for your help

Nicolas