(t *testing.T) {  InitSingleTest()   params, err := generateMessageParams()  if err != nil {   t.Fatalf("failed generateMessageParams with seed %d: %s.", seed, err)  }  msg, err := NewSentMessage(params)  if err != nil {   t.Fatalf("failed to create new message with seed %d: %s.", seed, err)  }  env, err := msg.Wrap(params)  if err != nil {   t.Fatalf("wrapped with zero key, seed: %d.", seed)  }   