adv_winverf
ad->ad_verf.adv_winverf = cryptbuf[1].key.low;
ad->ad_verf.adv_winverf = 0;
cryptbuf[1].key.low = verf.adv_winverf;
ad->ad_verf.adv_winverf = cryptbuf[1].key.low;
ad->ad_verf.adv_winverf = 0;
cryptbuf[1].key.low = verf.adv_winverf;