blake2s_init
blake2s_init(&ctx, dlen, key, keylen);
blake2s_init(&ctx, 32, NULL, 0);
void blake2s_init(struct blake2s *, size_t, const void *, size_t);
blake2s_init(&B, sizeof h, seed, HASHVAL_SEEDLEN);
blake2s_init(&state, WG_HASH_LEN, NULL, 0);
blake2s_init(&state, WG_HASH_LEN, NULL, 0);
blake2s_init(&state, outsize, key, keylen);
blake2s_init(&state, sizeof(key), NULL, 0);
blake2s_init(&state, outsize, key, sizeof(key));
blake2s_init(&state, outsize, NULL, 0);
blake2s_init(&state, WG_HASH_LEN, NULL, 0);
blake2s_init(&state, WG_HASH_LEN, NULL, 0);