A Python library that implements ElsieFour (LC4) encryption, based on the algorithm from Kaminsky (2017).

• Support for custom alphabets
• An interactive command-line utility
• Optional verbose output that visually shows the steps of the algorithm

Demo

LC4 supports Python 3.x.

Linux, Mac, and Windows are supported.

Other operating systems may be compatible if NumPy can be properly installed.

LC4 is available on PyPI, the Python Package Index.

$ pip3 install lc4

See documentation.md.

See example.py.

Tests are in tests/.

# Run tests
$ python3 -m unittest discover tests -v

The code in this repository has an MIT License.

See LICENSE.

Kaminsky, Alan. “ElsieFour: A Low-Tech Authenticated Encryption Algorithm For Human-to-Human Communication,” 2017. https://eprint.iacr.org/2017/339.