crypto_use_buf
crypto_use_buf(crp, data, datasize);
crypto_use_buf(crp, data, sc->sc_alen + data_secsize);
crypto_use_buf(crp, data, secsize);
crypto_use_buf(crp, buf, skip + len);
crypto_use_buf(crp, cod->buf, cop->len + cse->hashsize);
crypto_use_buf(crp, cod->buf, crp->crp_payload_start + caead->len +