https://github.com/sebastinas/pyrelic

Python bindings for relic
https://github.com/sebastinas/pyrelic

cryptography pairings relic

Last synced: about 1 month ago
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Python bindings for relic

• Host: GitHub
• URL: https://github.com/sebastinas/pyrelic
• Owner: sebastinas
• License: mit
• Created: 2021-03-09T14:06:41.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2023-12-11T18:32:30.000Z (about 1 year ago)
• Last Synced: 2024-09-15T09:01:47.674Z (3 months ago)
• Topics: cryptography, pairings, relic
• Language: Python
• Homepage:
• Size: 133 KB
• Stars: 7
• Watchers: 3
• Forks: 1
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        
# Python bindings for relic

`python-relic` (`pyrelic` for short) provides Python bindings for

[relic](https://github.com/relic-toolkit/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](https://launchpad.net/~s-ramacher/+archive/ubuntu/ait):

```sh

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

sudo apt install python3-pyrelic

```

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

Otherwise, `pyrelic` can be installed via `pip`:

```sh

pip install python-relic

```

or by running:

```sh

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](https://doi.org/10.1007%2Fs00145-004-0314-9).

* `examples/bfibe.py`: Implements the [Boneh-Franklin identity-based encryption

  scheme](https://doi.org/10.1007/3-540-44647-8_13) (BasicIdent).

* `examples/hpra.py`: Implements [homomorphic proxy

  re-authenticators](https://doi.org/10.1007/978-3-319-70972-7_7) for linear functions.

* `examples/bfe.py`: Implements [Bloom Filter KEM](https://doi.org/10.1007/978-3-319-78372-7_14)

  based on the BF IBE.

* `examples/spseq.py`: Implements a [structure-preserving signature

  scheme on equivalence classes](https://doi.org/10.1007/978-3-662-45611-8_26).

* `examples/chac`: Implements [core/helper anonymous

  credentials](https://doi.org/10.1145/3460120.3484582).

## License

The code is licensed under the MIT license and was written by Sebastian Ramacher (AIT Austrian

Institute of Technology).

## Acknowledgements

This work has been partially funded by the European Union’s Horizon 2020

research and innovation programme under grant agreement No 871473

([KRAKEN](https://krakenh2020.eu/)) and by ECSEL Joint Undertaking under grant

agreement No 826610 ([Comp4Drones](https://www.comp4drones.eu/)).