This is an implementation of the the RtF transciphering framework along with the HERA cipher proposed in Transciphering Framework for Approximate Homomorphic Encryption using the lattigo library.
We implement the hybrid framework in ckks_fv, which contains the following functionalities.
- CKKS scheme (the same as ckks)
- FV scheme supporting multi-level operations (named as
mfv) - Halfboot operation
- Evaluation of the HERA cipher in the FV scheme
An example of finding modulus switching parameter in the RtF framework with HERA is given in examples/ckks_fv.
You can run the benchmark of RtF transciphering framework along with HERA using RtF_bench_test.go. The benchmark parameters are given in rtf_params.go. To benchmark all the parameters, run the following command in ckks_fv directory.
go test -timeout=0s -bench=.
You can also benchmark specific parameter.
For example, to run the parameter 80as in the paper, run the following command.
go test -timeout=0s -bench=BenchmarkRtF80as