# Can we give access to controlled functionality in Fully homomorphic encryption schemes?

Homomorphic encryption schemes are PKE schemes with an additional special method Evaluate. Evaluate method takes input any function (as boolean circuit) and encrypted inputs of the function and evaluates the circuit. The results of such function are still encrypted under the public key PK.

Sometimes, it would be too wide of a scope to allow execution of any arbitrary function.
How can one limit FHE schemes to allow only fewer circuits?

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Should your title be parsed as "access [control functionality]" or "access-control functionality"? $\;\;$ –  Ricky Demer Aug 1 '13 at 22:52
it should be "access (control functionality)" i would correct it , the other one would be easy believe , rite ? –  sashank Aug 2 '13 at 3:13