PAC_MASK
keyia |= keyia_sign(i) & PAC_MASK;
keyib |= keyib_sign(i) & PAC_MASK;
keyda |= keyda_sign(i) & PAC_MASK;
keydb |= keydb_sign(i) & PAC_MASK;
keyg |= keyg_sign(i) & PAC_MASK;
vals[0] = sign->keyia & PAC_MASK;
vals[1] = sign->keyib & PAC_MASK;
vals[2] = sign->keyda & PAC_MASK;
vals[3] = sign->keydb & PAC_MASK;
vals[4] = sign->keyg & PAC_MASK;