ssl.RAND_add() should only accept bytes (not str)

[vstinner]

BPO	8737
Nosy	@amauryfa, @pitrou, @vstinner
Files	ssl_rand_add_bytes.patch

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2010-05-16.22:38:29.273>
created_at = <Date 2010-05-16.21:31:23.544>
labels = ['invalid', 'library']
title = 'ssl.RAND_add() should only accept bytes (not str)'
updated_at = <Date 2010-05-16.22:38:29.271>
user = 'https://github.com/vstinner'

bugs.python.org fields:

activity = <Date 2010-05-16.22:38:29.271>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2010-05-16.22:38:29.273>
closer = 'vstinner'
components = ['Library (Lib)']
creation = <Date 2010-05-16.21:31:23.544>
creator = 'vstinner'
dependencies = []
files = ['17371']
hgrepos = []
issue_num = 8737
keywords = ['patch']
message_count = 4.0
messages = ['105879', '105881', '105883', '105886']
nosy_count = 3.0
nosy_names = ['amaury.forgeotdarc', 'pitrou', 'vstinner']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue8737'
versions = ['Python 3.2']

[vstinner]

PySSL_RAND_add() uses PyArg_ParseTuple(args, "s#d:RAND_add", ...) and so converts implicitly str to bytes using UTF-8. I would prefer that this function only accepts bytes: the user will have to encode str to bytes *explicitly*.

Attached patch replace s# format by y# format.

[amauryfa]

This function is here to add entropy to the random numbers generator.
the kind of data is not important, and no matter which encoding is used, this will not change the quality of the entropy.

[pitrou]

I think Amaury is right. You could add a test that bytes are also accepted, though.

[vstinner]

the kind of data is not important, and no matter which encoding
is used, this will not change the quality of the entropy.

Ok, you are right :-)