[issue21304] Backport hashlib.pbkdf2_hmac to Python 2.7

[Alex Gaynor]

New submission from Alex Gaynor:

Pursuant to PEP466, this is a backport of Python 3.4's hashlib.pbkdf2_hmac.

Of note in this patch:

* None of the utilities for testing both a python and a C implementation simultaneously were present, so this only tests whichever implementation is available.
* Due to a variety of API changes and missing APIs, the code is not an exact copy-paste, tough luck :-)
* I haven't done docs yet.
* It currently accepts unicode values because the ``y*`` format from Python3 doesn't have any parallel in Python2. I'm not sure whether consistency with the rest of the 2-verse is more important than consistency with a sane way to treat data / the 3-verse.

----------
components: Extension Modules, Library (Lib)
files: pbkdf2.diff
keywords: patch, security_issue
messages: 216823
nosy: alex
priority: normal
severity: normal
status: open
title: Backport hashlib.pbkdf2_hmac to Python 2.7
versions: Python 2.7
Added file: http://bugs.python.org/file34968/pbkdf2.diff

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