void grasshopper_encrypt_block(grasshopper_round_keys_t* subkeys, grasshopper_w128_t* source,
grasshopper_w128_t* target, grasshopper_w128_t* buffer) {
void grasshopper_encrypt_block(grasshopper_round_keys_t* subkeys, grasshopper_w128_t* source,
grasshopper_w128_t* target, grasshopper_w128_t* buffer) {