TFHEpp

TFHEpp is full Scracthed pure C++ Ver. of TFHE. TFHEpp is slightly(about 10%) faster than original TFHE and supports Circuit Bootstrapping. TFHEpp depends on AVX2 becauise we use SPQLIOS FMA. If you want run TFHEpp without AVX2, see spqlios++ branch. It include pure C++ implementation of SPQLIOS as header only library, but slow.

Parameter

The default parameter is 80 bit security. If you want to use more secure(128 bit for Homomorphic Gates, 111bit for Circuit Bootstrapping) parameter, please add -DUSE_80BIT_SECURITY=OFF to cmake command.

Speed Test

Following Code measure how many time homomorphic NAND takes on your computer with TFHEpp.

git clone https://github.com/virtualsecureplatform/TFHEpp
cd TFHEpp
mkdir build
cd build
cmake ..
make
./test/nand 

If you want to run semantically equivalent test on original TFHE, run below code.

git clone https://github.com/tfhe/tfhe.git --recursive
cd tfhe
mkdir build
cd build
sed -i '79c\    inline void add4(double * res, const double * a, const double * b) {' ../src/libtfhe/fft_processors/spqlios/spqlios-fft-impl.cpp && sed -i '83c\    inline void sub4(double * res, const double * a, const double * b) {' ../src/libtfhe/fft_processors/spqlios/spqlios-fft-impl.cpp
cmake ../src -DENABLE_TESTS=on -DENABLE_NAYUKI_PORTABLE=off -DENABLE_NAYUKI_AVX=off -DENABLE_SPQLIOS_AVX=off -DENABLE_SPQLIOS_FMA=on -DCMAKE_BUILD_TYPE=optim
make
./test/test-gate-bootstrapping-spqlios-fma

This is for TFHE-10ms.

git clone https://github.com/virtualsecureplatform/tfhe-10ms.git --recursive
cd tfhe-10ms
mkdir build
cd build
cmake ../src -DENABLE_TESTS=on -DENABLE_NAYUKI_PORTABLE=off -DENABLE_NAYUKI_AVX=off -DENABLE_SPQLIOS_AVX=off -DENABLE_SPQLIOS_FMA=on -DCMAKE_BUILD_TYPE=optim
make
./test/test-bootstrapping-fft-spqlios-fma 

If you have Docker on your system, this will do above on docker.

git clone https://github.com/virtualsecureplatform/TFHEpp
cd TFHEpp
docker build -t tfheppbench .