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PYHEAAN

This is a Python wrapper for HEAAN library.

HEAAN is a software library that implements homomorphic encryption (HE) that supports fixed point arithmetics. This library supports approximate operations between rational numbers. The approximate error depends on some parameters and almost same with floating point operation errors. The scheme in this library is on the paper.

Build

• Environment

  CMake (>= 3.12), GNU G++ (>= 6.0) or Clang++ (>= 5.0)

  sudo apt-get update && sudo apt-get install git build-essential cmake python3 python3-dev python3.6-pip
  
  git clone https://github.com/Huelse/HEAAN-Python.git
  

• GMP

  gmp-6.1.2

  cd gmp-6.1.2
  ./configure SHARED=on # default install in /usr/local, option --prefix=/path/to/extends
  make
  make check  # optional
  make install
  

• NTL

  ntl-11.4.3

  cd NTL/src
  ./configure SHARED=on  # default install in /usr/local, option DEF_PREFIX=/path/to/extends
  make
  make check  # optional
  sudo make install
  

• HEAAN

  HEAAN-2.1

  In "Params.h", 'pbnd' value is 59.0 by default. If you are using NTL with "NTL_ENABLE_AVX_FFT=on", This option reduces that small-prime size bound from 60 bits to 50 bits, see. For this reason, you need to change the setting to 49.0.

  cd HEAAN/lib
  make all
  

• pybind11

  pybind11

  # Option 1 to run setup.py
  pip3 install -r requirements.txt
  
  # Option 2 to run cmake
  cd pybind11
  mkdir build && cd build
  cmake ..
  make
  sudo make install
  

• HEAAN-Python

  • Option 1

  python3 setup.py build_ext -i
  
  python3 setup.py install  # global install
  

  • Option 2

  cd src
  cmake .
  make
  

  If success, you will get the dynamic link library in the folder, which name HEAAN.cpython-<version>.so.

Test

make sure you already installed the library globally or the file HEAAN.cpython-<version>.so in the current directory.

python3 test.py

FAQ

1. ImportError: libntl.so.43: cannot find

   • export LD_LIBRARY_PATH=/path/to/extends/lib

   • add the /path/to/extends/lib to /etc/ld.so.conf and refresh it sudo ldconfig

   • install the NTL and gmp in /usr/local as default

2. MakeError: /usr/bin/ld: cannot find libntl.so or libHEAAN.a

   Change to absolute path.

About

This lib is still in the experimental stage.

If any problems, email or Issue.

Email: huelse@oini.top.

Contributing

• Professor: Dr. Chen