blake2s_update
rc = blake2s_update(state, buf, len);
void blake2s_update(struct blake2s_state *state, const uint8_t *in, size_t inlen);
blake2s_update(&state, in, inlen);
blake2s_update(&blake, label, strlen(label));
blake2s_update(&blake, input, COOKIE_INPUT_SIZE);
blake2s_update(&state, buf, len);
blake2s_update(&state, buf, len);
blake2s_update(&state, macs->mac1, COOKIE_MAC_SIZE);
blake2s_update(&state, (uint8_t *)&satosin(sa)->sin_addr,
blake2s_update(&state, (uint8_t *)&satosin(sa)->sin_port,
blake2s_update(&state, (uint8_t *)&satosin6(sa)->sin6_addr,
blake2s_update(&state, (uint8_t *)&satosin6(sa)->sin6_port,
blake2s_update(state, block, BLAKE2S_BLOCK_SIZE);
blake2s_update(&state, key, keylen);
blake2s_update(&state, x_key, BLAKE2S_BLOCK_SIZE);
blake2s_update(&state, in, inlen);
blake2s_update(&state, x_key, BLAKE2S_BLOCK_SIZE);
blake2s_update(&state, i_hash, BLAKE2S_HASH_SIZE);
blake2s_update(&blake, hash, NOISE_HASH_LEN);
blake2s_update(&blake, src, src_len);
blake2s_update(&blake, ck, NOISE_HASH_LEN);
blake2s_update(&blake, (uint8_t *)NOISE_IDENTIFIER_NAME,