semvec/pypi-packages huggingface dataset:
ascon 0.0.9
Lightweight authenticated encryption and hashing
License: CC0 1.0
Requires Python: >=3.8

Python implementation of Ascon
==============================

This is a Python3 implementation of Ascon v1.2, an authenticated cipher and hash function.

https://github.com/meichlseder/pyascon

Ascon
-----

Ascon is a family of [authenticated encryption](https://en.wikipedia.org/wiki/Authenticated_encryption) (AEAD) and [hashing](https://en.wikipedia.org/wiki/Cryptographic_hash_function) algorithms designed to be lightweight and easy to implement, even with added countermeasures against side-channel attacks.
It was designed by a team of cryptographers from Graz University of Technology, Infineon Technologies, and Radboud University: Christoph Dobraunig, Maria Eichlseder, Florian Mendel, and Martin Schläffer.

Ascon has been selected as the standard for lightweight cryptography in the [NIST Lightweight Cryptography competition (2019–2023)](https://csrc.nist.gov/projects/lightweight-cryptography) and as the primary choice for lightweight authenticated encryption in the final portfolio of the [CAESAR competition (2014–2019)](https://competitions.cr.yp.to/caesar-submissions.html).

Find more information, including the specification and more implementations here:

https://ascon.iaik.tugraz.at/


Algorithms
----------

This is a simple reference implementation of Ascon v1.2 as submitted to the NIST LWC competition that includes 

  * Authenticated encryption `ascon.encrypt(key, nonce, associateddata, plaintext, variant="Ascon-128")` (and similarly `decrypt`) with the following 3 family members:

    - `Ascon-128`
    - `Ascon-128a`
    - `Ascon-80pq`
  
  * Hashing algorithms `ascon.hash(message, variant="Ascon-Hash", hashlength=32)` including 4 hash function variants with fixed 256-bit (`Hash`) or variable (`Xof`) output lengths:

    - `Ascon-Hash`
    - `Ascon-Hasha`
    - `Ascon-Xof`
    - `Ascon-Xofa`
  
  * Message authentication codes `ascon.mac(key, message, variant="Ascon-Mac", taglength=16)` including 5 MAC variants (from https://eprint.iacr.org/2021/1574, not part of the LWC proposal) with fixed 128-bit (`Mac`) or variable (`Prf`) output lengths, including a variant for short messages of up to 128 bits (`PrfShort`).

    - `Ascon-Mac`
    - `Ascon-Maca`
    - `Ascon-Prf`
    - `Ascon-Prfa`
    - `Ascon-PrfShort`