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Hide Regkey
I don't know if this is what you are looking for, but i know that you can hide registry values simply using very long names for it. If you overflow the MAX_LENGTH constant (if is longer than 260 bytes), the Regedit utility won't show these Registry values, but they're still there.
I found this info here
Very interesting vulnerability , thanks for the info Cyph3rHell. Consequently for viewing this "hidden" registry value , we shouldn't not use the regedit utility , it is similar to hook the API function. Yet this will be sufficient :) , i will not have to program an another "driver". I am open to other ways to do this.