public User Register(User user, string password) { if (!_db.Users.Any(u => u.UserName == user.UserName)) { byte[] passwordHash, passwordSalt; Encrypter.Encript(password, out passwordHash, out passwordSalt); user.PasswordHash = passwordHash; user.PasswordSalt = passwordSalt; _db.Users.Add(user); Save(); return(user); } return(null); }