lfsr_rollback_word(state,uid^nt,0);
crypto1_get_lfsr(state,&key_recovered);
printf("\nkey recovered: %012" PRIx64 "\n\n",key_recovered);
lfsr_rollback_word(state,uid^nt,0);
crypto1_get_lfsr(state,&key_recovered);
printf("\nkey recovered: %012" PRIx64 "\n\n",key_recovered);