brunoproduit / roca

Implementation of the ROCA attack

Implementation of the ROCA attack (CVE-2017-15361)

This is the implementation of the paper Return of the Coppersmith attack.

The implementation is in python 2.7 and uses the Howgrave-Graham code from RSA-and-LLL-attacks.

For the detection of vulnerable keys, the code from the original authors of the paper is used (detect.py) crocs-muni

PR's welcome!

Usage

$ python roca.py <path to key> -j <number of cores>

$ python optimization.py <path to key> -j <number of cores>

Test

$ cd src
$ cp ../test/test_roca.py .
$ python test_roca.py

Optimization

The optimization is based on an analysis of properties observed from real keys exported from affected card (Infineon JavaCard SLJ52GCA150). The parameters a' and k' turn out to have a lower entropy than stated in the original paper.

a' is fixed at the MSB and biased to be even, This is used to shrink the bruteforce range and speedup the attack.

HPC

$ sbatch slurm.sh <path to key>

Organization of the Code

data/512.pem -> Vulnerable RSA 512-bit key

LICENSE -> APACHE 2.0

README.md -> This file

requirements.txt -> Python 2.7 requirements

HPC/optimization_hpc.py -> modified attack implemetation for HPC

HPC/slurm.sh -> SLURM start script for the attack

HPC/split_iteration.py -> helper for SCRUM

src/optimization.py -> Optimized ROCA attack

src/params.py -> Used to calculate the parameters

src/roca.py -> Non-optimized attack

src/roca.sage -> Pure sage version of the attack

src/detect.py -> crocs-muni

test/test_roca.py -> Test the attack