spongeshaker - High-level API to SHA-3 and other sponge modes with Keccak

This module implements Keccak-f1600 sponge permutation and high-level APIs for various modes of it, including SHA-3 hashes.

This implementation is up-to-date with final version of FIPS-202_ (5-Aug-2015).

Features:

• Hashing (SHA3), PRNG, Stream cipher, AEAD cipher (SpongeWrap_).
• Optimized-C implementation from Keccak reference code, with separate paths for 64- and 32-bit CPUs.
• Works with both Python 2.x and 3.x.

Todo:

• Optimized ASM implementations.
• Other Keccak permutation sizes.
• Other sponge algorithms.
• Other sponge modes.

Example::

from spongheshaker.sha3 import sha3_256, shake128

fixed-length output

md = sha3_256('Hello ') md.update('world!') hash = md.digest()

variable-length output

md = shake128('Hello ') md.update('world!') res1 = md.extract(64) res2 = md.extract(64)

Links:

• Documentation_
• Downloads_
• Git_ repo

.. _Keccak: https://en.wikipedia.org/wiki/Keccak .. _Sponge: https://en.wikipedia.org/wiki/Sponge_function .. _ISC: https://en.wikipedia.org/wiki/ISC_license .. _FIPS-202: http://dx.doi.org/10.6028/NIST.FIPS.202 .. _Git: https://github.com/markokr/spongeshaker .. _Downloads: https://pypi.python.org/pypi/spongeshaker .. _Documentation: https://spongeshaker.readthedocs.org/ .. _SpongeWrap: http://sponge.noekeon.org/SpongeDuplex.pdf