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Name: pysha3
Version: 1.0.2
Summary: SHA-3 (Keccak) for Python 2.7 - 3.5
Home-page: https://github.com/tiran/pysha3
Author: Christian Heimes
Author-email: christian@python.org
License: PSFL (Keccak: CC0 1.0 Universal)
Description-Content-Type: UNKNOWN
Description: ======
pysha3
======
SHA-3 wrapper (keccak) for Python. The package is a wrapper around the
optimized Keccak Code Package, https://github.com/gvanas/KeccakCodePackage .
The module is a standalone version of my SHA-3 module from Python 3.6
(currently under development). The code in sha3module.c has been modified to
be compatible with Python 2.7 to 3.5. Python 2.6 and earlier are not
supported.
Updates since pysha 0.3
=======================
**pysha3 1.0 is not compatible with pysha3 0.3!**
pysha3 < 1.0 used the old Keccak implementation. During the finalization of
SHA3, NIST changed the delimiter suffix from 0x01 to 0x06. The Keccak sponge
function stayed the same. pysha3 1.0 provides the previous Keccak hash, too.
Platforms
=========
pysha3 has been successfully tested on several platforms:
- Linux (GCC, clang) on X86, X86_64 and ARMv6 (little endian)
- Windows (VS 2008, VS 2010, VS2015) on X86 and X86_64
Usage
=====
The `sha3` module contains several constructors for hash objects with a
PEP 247 compatible interface. The module provides SHA3, SHAKE and Keccak:
* `sha3_228()`, `sha3_256()`, `sha3_384()`, and `sha3_512()`
* `shake_128()`, `shake_256()`
* `keccak_228()`, `keccak_256()`, `keccak_384()`, and `keccak_512()`
The `sha3` module monkey patches the `hashlib` module . The monkey patch is
automatically activated with the first import of the `sha3` module. The
`hashlib` module of Python 3.6 will support the four SHA-3 algorithms and
the two SHAKE algorithms on all platforms. Therefore you shouldn't use the
sha3 module directly and rather go through the `hashlib` interface::
>>> import sys
>>> import hashlib
>>> if sys.version_info < (3, 6):
... import sha3
>>> s = hashlib.sha3_512()
>>> s.name
'sha3_512'
>>> s.digest_size
64
>>> s.update(b"data")
>>> s.hexdigest()
'ceca4daf960c2bbfb4a9edaca9b8137a801b65bae377e0f534ef9141c8684c0fedc1768d1afde9766572846c42b935f61177eaf97d355fa8dc2bca3fecfa754d'
>>> s = hashlib.shake_256()
>>> s.update(b"data")
>>> s.hexdigest(4)
'c73dbed8'
>>> s.hexdigest(8)
'c73dbed8527f5ae0'
>>> s.hexdigest(16)
'c73dbed8527f5ae0568679f30ecc5cb6'
>>> import sha3
>>> k = sha3.keccak_512()
>>> k.update(b"data")
>>> k.hexdigest()
'1065aceeded3a5e4412e2187e919bffeadf815f5bd73d37fe00d384fe29f55f08462fdabe1007b993ce5b8119630e7db93101d9425d6e352e22ffe3dcb56b825'
Changelog
=========
pysha3 1.0.2
------------
*Release: 05-Feb-2017*
- Rename internal C extension to _pysha3 to avoild conflict with Python 3.6'
_sha3 extension.
pysha3 1.0.1
------------
*Release: 24-Jan-2017*
- Fix github.org -> github.com (Pi Delport)
- Fix endianness checks for Python 2 (William Grant)
- Fix changelog, the Christmas release was 1.0.0, not 1.1.0
pysha3 1.0.0
------------
*Release date: 24-Dec-2016*
- Synchronize with Python 3.6.0 release
- Move all backport related additions to backport.inc
- Fix flake8 violations
pysha3 1.0b1
------------
*Release date: 01-May-2016*
- Update backend to use the latest Keccak Code Package. pysha3 now implements
the official NIST standard. The old Keccak hashes are available with
keccak prefix.
- Add SHAKE support.
- All sha3, shake and keccak variants are separate types instead of factory
functions that return the same type.
- Drop Python 2.6 and Python 3.0 to 3.3 support.
- Fix typo that disabled threading optimization.
- Add vector files for additional tests.
- Add experimental HMAC support based on examples from
http://wolfgang-ehrhardt.de/hmac-sha3-testvectors.html .
- Test hashing of unaligned data.
- Add ISO C11 memset_s() function as _Py_memset_s() in order to securely
wipe memory that holds sensitive data. The page
https://www.securecoding.cert.org/confluence/display/seccode/MSC06-C.+Be+aware+of+compiler+optimization+when+dealing+with+sensitive+data
explains the motivation for memset_s().
- Add tox support.
- Add Travis and appveyor integration.
- Add _capacity_bits, _rate_bits and _suffix attributes for diagnostic
purposes.
pysha3 0.3
----------
*Release date: 14-Oct-2012*
- Fix 64bit big endian support
- Add workaround for alignment error on 64bit SPARC machine by using the opt32
implementation.
- block_size now returns NotImplemented to prevent users from using pysha3
with the hmac module.
pysha3 0.2.2
------------
*Release date: 07-Oct-2012*
- Re-add brg_endian.h to fix issue on Solaris (big endian platform)
pysha3 0.2.1
------------
*Release date: 06-Oct-2012*
- Fix MANIFEST.in to include Makefile and tests.py
- Add setup.py test command with hack for inplace builds
- Enhance README.txt and fixed its markup
pysha3 0.2
----------
*Release date: 06-Oct-2012*
- Change directory struct to use the same directory layout as Python 3.4.
- Remove C++ comments from Keccak sources for ANSI C compatibility.
- Declare all Keccak functions and globals as static to avoid name clashes.
- Remove alias sha3() for sha3_512().
- Add block_size attribute. Keccak has a internal sponge size of 1600 bits.
- Release GIL around SHA3_update() calls.
- Monkey patch the hashlib module to support, e.g. hashlib.sha3_512() and
hashlib.new("sha3_512")
- Release GIL around SHA3_update() when the data exceeds a certain size.
- Fix build on platforms with an unsigned 64bit integer type (uint64_t). The
module falls back to 32bit implementation of Keccak with interleave tables.
pysha3 0.1
----------
*Release date: 04-Oct-2012*
- first release
- based on KeccakReferenceAndOptimized-3.2.zip
Keywords: sha3 sha-3 keccak hash
Platform: POSIX
Platform: Windows
Classifier: Development Status :: 4 - Beta
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: Python Software Foundation License
Classifier: License :: CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Classifier: Natural Language :: English
Classifier: Operating System :: MacOS :: MacOS X
Classifier: Operating System :: POSIX
Classifier: Operating System :: POSIX :: BSD
Classifier: Operating System :: POSIX :: Linux
Classifier: Operating System :: Microsoft :: Windows
Classifier: Programming Language :: C
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Topic :: Security :: Cryptography
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