Sending encrypted to the client and vice versa?

If you make you own it would not be public knoledge as you would hold the main part. know one could gain all information unless you gave it to them. Your own code could be safe as houses, if you use a large enough encryption code. the bigger the code the harder to break. most of the encryption codes on the market are readerly avilable to all. So no coding sold to mass markets is safe due to hacker and such getting the programs and ripping them to bits to find back doors and such, if your own became compromised you could change it almost instantly. look at basic encryption for the inigma and then up to date you'll find your answer.