hmackey
crypto_key_t *enckey, crypto_key_t *hmackey)
hmackey->ck_length = cdata->keylen * 8;
hmackey->ck_format = CRYPTO_KEY_RAW;
hmackey->ck_data = kmem_zalloc(cdata->keylen, KM_SLEEP);
hmackey->ck_data, keybytes,