Python bindings for relic

python-relic (pyrelic for short) provides Python bindings for relic. Note though, that the bindings are driven by my personal needs and they do not cover the full relic API.

Dependencies

pyrelic requires the following dependencies to successfully build and install:

• relic >= 0.5.0 with pairing support enabled.
• Cython >= 0.28 (optional, only for building). If Cython is not available, the C files are not regenerated from their source.
• pkgconfig (optional, only for building). If pkgconfig is not available, the build system assumes that relic can be linked as -lrelic.

Quick installation guide

If you are running Ubuntu 20.04, the easiest way to install pyrelic is via my PPA:

sudo add-apt-repository -u ppa:s-ramacher/ait
sudo apt install python3-pyrelic

It comes with a prebuilt version of relic configured for the pairing-friendly BLS12-381 curve.

Otherwise, pyrelic can be installed via pip:

pip install python-relic

or by running:

python3 setup.py install

Note though that these two approaches require a pairing-enabled build of relic to be available.

Examples

pyrelic includes some examples that demonstrate the use of the module and also showcases some pairing-based schemes:

• examples/bls.py: Implements the Boneh-Lynn-Shacham signature scheme.
• examples/bfibe.py: Implements the Boneh-Franklin identity-based encryption scheme (BasicIdent).
• examples/hpra.py: Implements homomorphic proxy re-authenticators for linear functions.
• examples/bfe.py: Imeplemnts Bloom Filter KEM based on the BF IBE.

License

The code is licensed under the MIT license.