Ah. By using more complex FHE states and operations, such that part of the state can be decoded/decrypted by the server to direct the server's actions, while other parts remain opaque.
The server may or may not find those decoded parts meaningful: Meaningful would be something like console output while the computation progresses, and a "finished" signal. Non-meaningful (but still useful to the FHE program) would be something that looks like a sequence of memory requests whose locations may as well be pseudo-random.
The server may or may not find those decoded parts meaningful: Meaningful would be something like console output while the computation progresses, and a "finished" signal. Non-meaningful (but still useful to the FHE program) would be something that looks like a sequence of memory requests whose locations may as well be pseudo-random.