How to transfer the ckks of the threshold scheme to FHEW for ciphertext comparison
This feature is not currently supported by OpenFHE. We are planning to add threshold FHE support for scheme switching in a future version. Currently scheme switching between CKKS and FHEW/TFHE is restricted to the single-key case of CKKS.
In principle, this could be done by extending the switching key generation procedure (from CKKS to FHEW keys) to a distributed case.