[issue3745] _sha256 et al. encode to UTF-8 by default

[Hagen Fürstenau]

New submission from Hagen Fürstenau <hfuerstenau at gmx.net>:

Whereas openssl-based _hashlib refuses to accept unencoded strings:

>>> _hashlib.openssl_sha256("\xff")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: object supporting the buffer API required

the _sha256 version encodes to UTF-8 by default:

>>> _sha256.sha256("\xff").digest() ==
_sha256.sha256("\xff".encode("utf-8")).digest()
True

I think refusing is better, but at least the behaviour should be
consistent. Same for the other algorithms in hashlib.

----------
components: Library (Lib)
messages: 72220
nosy: hagen
severity: normal
status: open
title: _sha256 et al. encode to UTF-8 by default
type: behavior
versions: Python 3.0

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue3745>
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