lockcrypt_round1.cpp

void lockcrypt::level1_crypt(void *buf, size_t buf_size, void *key, size_t key_size)
{
	size_t dwsize = buf_size >> 2;

	for (size_t i = 4, k = 0; i < buf_size - 6; i += 2, k +=4) {
		if (k > KEY_SIZE) {
			k = 0;
		}
		DWORD *dwlist = (DWORD *) ((ULONGLONG)buf + i);
		DWORD *keydw = (DWORD *) ((ULONGLONG)key + k);

		DWORD inp = *dwlist;
		DWORD out = inp ^ (*keydw);
		(*dwlist) = out;
	}
}