How to make some verilog codes invisible in a Quartus project?

Hi,

I guess you want to encrypt some verilog code so that it will not be visible to other users. For this you will have to find out if Quartus II has an encryption function using which you can encrypt the codes and deliver only the encrypted codes to others. The encryption should be such that it is readable by EDA tools other wise it would defeat the purpose.

There are lots of companies that do provide encrypted sources for designs, ones which we can compile but not see the code.