public IActionResult RegisterUser(AuthorDto model, string Password) { if (string.IsNullOrEmpty(model.MailAddress) || string.IsNullOrEmpty(Password)) { return(Json(new { isNull = true, message = "Mail ve şifre alanları boş bırakılamaz." })); } string hashed = string.Empty; using (var sha = SHA1.Create()) { var hashedBytes = sha.ComputeHash(Encoding.UTF8.GetBytes(string.Concat(model.MailAddress.Substring(0, 4), Password))); hashed = BitConverter.ToString(hashedBytes).Replace("-", "").ToLower(); } return(Ok(_authorService.AddUser(model, hashed))); }