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Rainier Signatures

This repository contains the code for the Rainier signature scheme from our paper

Shorter Signatures Based on Tailor-Made Minimalist Symmetric-Key Crypto
Christoph Dobraunig and Daniel Kales and Christian Rechberger and Markus Schofnegger and Greg Zaverucha
eprint

The implementation of the additionally proposed variants of Banquet can be found here.

Requirements

C++-17 Compatible Toolchain

For testing:

Setup

mkdir build
cd build
cmake ..
make 
# tests (only if you built them)
make test
# benchmarks
./bench_free -i <iterations> <kappa> <N> <tau> #benchmark parameters freely
python3 ../tools/bench_all.py # benchmarks some of the selected parameters

The benchmark script contains a SCALING_FACTOR variable that is used to scale the measured cycles to ms. Configure it according to your specific machine.

Additional Scripts

Some additional scripts to generate new Rain instances or to calculate the soundness and signature size of a given parameter set can be found in the tools/scripts folder.