Generate BinFHE bootstrapping keys

Generate BinFHE bootstrapping keys

Usage

bin_bt_key_gen(ctx, sk, keygen_mode = KeygenMode$SYM_ENCRYPT)

Arguments

ctx

A BinFHE context

sk

An LWEPrivateKey

keygen_mode

Integer from KeygenMode; controls whether the bootstrapping keys are generated under symmetric-key encryption (KeygenMode$SYM_ENCRYPT, the default and the C++ default per binfhe-constants.h line 133) or public-key encryption (KeygenMode$PUB_ENCRYPT), matching the BTKeyGen(sk, keyGenMode) overload at binfhecontext.h line 273.

Value

Invisibly, the ctx BinFHE context that was passed in. Called for its side effect: the bootstrapping and key-switching keys are generated and stored inside the C++ context, after which eval_bin_gate() and the other gate evaluations can be used.