sboxU is at a very early stage. Its API might change over time!
SAGE/Python functions useful for studying S-boxes and Boolean functions such as computing the DDT, computing the Walsh spectrum, affine equivalence testing... Some of them are implemented in C++ and/or in parallel to improve their performances.
The SboxU was only tested on Linux (Ubuntu 16.04). To install it,
you need the following packages.
libboost-python-dev
libpython-dev
sage
cmake
To retrieve this module, use the following command:
git clone https://github.com/lpp-crypto/sboxU/
Then, move to the sbox-utils/sboxU directory and run:
cmake .
make
This compiles the C++ part of sboxU and allows it to be called from
a SAGE script. To use it in your project, simply move the sboxU
folder to your project's directory. You can then import sboxU like
any other python module. As an example of the functions provided by
sboxU, the SAGE script example.py stored alongside the folder
sboxU generates random permutations and tests their affine
equivalence.
sboxU should work out of the box on a MAC. If Sage complains about
ValueError: unknown locale: UTF-8 in Python, try adding the
following lines to your ~/.bash_profile:
export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8
To install the boost library needed, you can use the following command:
brew install boost-python