Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly
Appearance settings

Expand file tree

/

crypt.py

Copy path
More file actions
More file actions

Latest commit

 

History

History
History
62 lines (44 loc) · 1.83 KB
/

crypt.py

Copy path

File metadata and controls

62 lines (44 loc) · 1.83 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
"""Wrapper to the POSIX crypt library call and associated functionality."""
import _crypt
import string as _string
from random import SystemRandom as _SystemRandom
from collections import namedtuple as _namedtuple
_saltchars = _string.ascii_letters + _string.digits + './'
_sr = _SystemRandom()
class _Method(_namedtuple('_Method', 'name ident salt_chars total_size')):
"""Class representing a salt method per the Modular Crypt Format or the
legacy 2-character crypt method."""
def __repr__(self):
return '<crypt.METHOD_{}>'.format(self.name)
def mksalt(method=None):
"""Generate a salt for the specified method.
If not specified, the strongest available method will be used.
"""
if method is None:
method = methods[0]
s = '${}$'.format(method.ident) if method.ident else ''
s += ''.join(_sr.choice(_saltchars) for char in range(method.salt_chars))
return s
def crypt(word, salt=None):
"""Return a string representing the one-way hash of a password, with a salt
prepended.
If ``salt`` is not specified or is ``None``, the strongest
available method will be selected and a salt generated. Otherwise,
``salt`` may be one of the ``crypt.METHOD_*`` values, or a string as
returned by ``crypt.mksalt()``.
"""
if salt is None or isinstance(salt, _Method):
salt = mksalt(salt)
return _crypt.crypt(word, salt)
# available salting/crypto methods
METHOD_CRYPT = _Method('CRYPT', None, 2, 13)
METHOD_MD5 = _Method('MD5', '1', 8, 34)
METHOD_SHA256 = _Method('SHA256', '5', 16, 63)
METHOD_SHA512 = _Method('SHA512', '6', 16, 106)
methods = []
for _method in (METHOD_SHA512, METHOD_SHA256, METHOD_MD5):
_result = crypt('', _method)
if _result and len(_result) == _method.total_size:
methods.append(_method)
methods.append(METHOD_CRYPT)
del _result, _method
Morty Proxy This is a proxified and sanitized view of the page, visit original site.