Шифрование потока

Делаю чат (клиент и сервер), при старте сервера пытаюсь зашифровать соединение через сертификат

Код Program.cs

class Program
{
    public X509Certificate2 cert = new X509Certificate2("server.pfx", "enote");
    static void Main(string[] args)
    {
        var url = "http://192.168.0.61:8080/";
        using (WebApp.Start<Startup>(url))
        {
            Console.WriteLine($"Статус: Сервер запущен. Адрес: {url}");
            Console.ReadLine();
        }
    }
}
public class Startup
{
    public void Configuration(IAppBuilder app)
    {
        app.UseCors(CorsOptions.AllowAll);
        app.MapSignalR("/enote", new HubConfiguration());
    }
}

Подскажите, пожалуйста, как я могу это сделать?

Код IClient.cs

public interface IClient
{
    void ParticipantDisconnection(string name);
    void ParticipantReconnection(string name);
    void ParticipantLogin(User client);
    void ParticipantLogout(string name);
    void BroadcastMessage(string sender, string message);
    void UnicastMessage(string sender, string message);
}

Код ChatHub.cs

public class ChatHub : Hub<IClient>
{
    private static ConcurrentDictionary<string, User> ChatClients = new ConcurrentDictionary<string, User>();
    public override Task OnDisconnected(bool stopCalled)
    {
        var userName = ChatClients.SingleOrDefault((c) => c.Value.ID == Context.ConnectionId).Key;
        if (userName != null)
        {
            Clients.Others.ParticipantDisconnection(userName);
            Console.WriteLine($"<> {userName} отключен");
        }
        return base.OnDisconnected(stopCalled);
    }
    public override Task OnReconnected()
    {
        var userName = ChatClients.SingleOrDefault((c) => c.Value.ID == Context.ConnectionId).Key;
        if (userName != null)
        {
            Clients.Others.ParticipantReconnection(userName);
            Console.WriteLine($"== {userName} переподключен");
        }
        return base.OnReconnected();
    }
    public List<User> Login(string name, string password, byte[] photo)
    {
        if (!ChatClients.ContainsKey(name))
        {
            Console.WriteLine($"++ {name} выходит в сеть");
            List<User> users = new List<User>(ChatClients.Values);
            User newUser = new User { Name = name, Password = password, ID = Context.ConnectionId, Photo = photo };
            var added = ChatClients.TryAdd(name, newUser);
            if (!added) return null;
            Clients.CallerState.UserName = name;
            Clients.Others.ParticipantLogin(newUser);
            return users;
        }
        return null;
    }
    public void Logout()
    {
        var name = Clients.CallerState.UserName;
        if (!string.IsNullOrEmpty(name))
        {
            User client = new User();
            ChatClients.TryRemove(name, out client);
            Clients.Others.ParticipantLogout(name);
            Console.WriteLine($"-- {name} ушел из сети");
        }
    }
    public void BroadcastChat(string message)
    {
        var name = Clients.CallerState.UserName;
        if (!string.IsNullOrEmpty(name) && !string.IsNullOrEmpty(message))
        {
            Clients.Others.BroadcastMessage(name, message);
        }
    }
    public void UnicastChat(string recepient, string message)
    {
        var sender = Clients.CallerState.UserName;
        if (!string.IsNullOrEmpty(sender) && recepient != sender &&
            !string.IsNullOrEmpty(message) && ChatClients.ContainsKey(recepient))
        {
            User client = new User();
            ChatClients.TryGetValue(recepient, out client);
            Clients.Client(client.ID).UnicastMessage(sender, message);
        }
    }
}