HMAC_IPAD_VAL
c->cri_key[i] ^= HMAC_IPAD_VAL;
c->cri_key[i] ^= (HMAC_IPAD_VAL ^
c->cri_key[i] ^= HMAC_IPAD_VAL;
(HMAC_IPAD_VAL ^ HMAC_OPAD_VAL);
macini->cri_key[i] ^= HMAC_IPAD_VAL;
macini->cri_key[i] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL);
cri->cri_key[k] ^= HMAC_IPAD_VAL;
cri->cri_key[k] ^= (HMAC_IPAD_VAL ^ HMAC_OPAD_VAL);