class user_person

    public class Person
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public DateTime Birth { get; set; }

        public virtual User User { get; set; }
    }

    public class User
    {
        private string _pass;
        public User()
        {
            Person = new Person();
        }

        public int Id { get; set; }
        public int PersonId { get; set; }
        public string Email { get; set; }
        public string Login { get; set; }
        public string Password { get => _pass; set => _pass = EncryptPassword(value); }
        public string Token { get; set; }

        public virtual Person Person { get; set; }

        private string EncryptPassword(string value)
        {
            byte[] salt = Encoding.UTF8.GetBytes(Login);
            byte[] senhaByte = Encoding.UTF8.GetBytes(value);
            byte[] sha256 = new SHA256Managed().ComputeHash(senhaByte.Concat(salt).ToArray());
            return Convert.ToBase64String(sha256);
        }
    }