cpython/Lib/hashlib.py
Christian Heimes d5e2b6f3bc Merged revisions 61538-61540,61556,61559-61560,61563,61565,61571,61575-61576,61580-61582,61586,61591,61593,61595,61605-61606,61613-61616,61618,61621-61623,61625,61627,61631-61634 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r61538 | steven.bethard | 2008-03-18 20:03:50 +0100 (Di, 18 Mär 2008) | 1 line

  cell_compare needs to return -2 instead of NULL.
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  r61539 | steven.bethard | 2008-03-18 20:04:32 +0100 (Di, 18 Mär 2008) | 1 line

  _have_soundcard() is a bad check for winsound.Beep, since you can have a soundcard but have the beep driver disabled. This revision basically disables the beep tests by wrapping them in a try/except. The Right Way To Do It is to come up with a _have_enabled_beep_driver() and use that.
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  r61540 | gregory.p.smith | 2008-03-18 20:05:32 +0100 (Di, 18 Mär 2008) | 8 lines

  Fix chown on 64-bit linux.  It needed to take a long (64-bit on 64bit linux) as
  uid and gid input to accept values >=2**31 as valid while still accepting
  negative numbers to pass -1 to chown for "no change".

  Fixes issue1747858.

  This should be backported to release25-maint.
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  r61556 | steven.bethard | 2008-03-18 20:59:14 +0100 (Di, 18 Mär 2008) | 1 line

  Fix test_atexit so that it still passes when -3 is supplied. (It was catching the warning messages on stdio from using the reload() function.)
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  r61559 | neal.norwitz | 2008-03-18 21:30:38 +0100 (Di, 18 Mär 2008) | 1 line

  Import the test properly.  This is especially important for py3k.
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  r61560 | gregory.p.smith | 2008-03-18 21:40:01 +0100 (Di, 18 Mär 2008) | 2 lines

  news entry for the chown fix
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  r61563 | brett.cannon | 2008-03-18 22:12:42 +0100 (Di, 18 Mär 2008) | 2 lines

  Ignore BIG5HKSCS-2004.TXT which is downloaded as part of a test.
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  r61565 | steven.bethard | 2008-03-18 22:30:13 +0100 (Di, 18 Mär 2008) | 1 line

  Have regrtest skip test_py3kwarn when the -3 flag is missing.
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  r61571 | gregory.p.smith | 2008-03-18 23:27:41 +0100 (Di, 18 Mär 2008) | 4 lines

  Add a test to make sure zlib.crc32 and binascii.crc32 return the same thing.
  Fix a buglet in binascii.crc32, the second optional argument could previously
  have a signedness mismatch with the C variable its going into.
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  r61575 | raymond.hettinger | 2008-03-19 00:22:29 +0100 (Mi, 19 Mär 2008) | 1 line

  Speed-up isinstance() for one easy case.
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  r61576 | raymond.hettinger | 2008-03-19 00:33:08 +0100 (Mi, 19 Mär 2008) | 1 line

  Issue: 2354: Add 3K warning for the cmp argument to list.sort() and sorted().
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  r61580 | andrew.kuchling | 2008-03-19 02:05:35 +0100 (Mi, 19 Mär 2008) | 1 line

  Add Jeff Rush
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  r61581 | gregory.p.smith | 2008-03-19 02:38:35 +0100 (Mi, 19 Mär 2008) | 3 lines

  Mention that crc32 and adler32 are available in a different module (zlib).
  Some people look for them in hashlib.
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  r61582 | gregory.p.smith | 2008-03-19 02:46:10 +0100 (Mi, 19 Mär 2008) | 3 lines

  Use zlib's crc32 routine instead of binascii when available.  zlib's is faster
  when compiled properly optimized and about the same speed otherwise.
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  r61586 | david.wolever | 2008-03-19 03:26:57 +0100 (Mi, 19 Mär 2008) | 1 line

  Added my name to ACKS
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  r61591 | gregory.p.smith | 2008-03-19 04:14:41 +0100 (Mi, 19 Mär 2008) | 5 lines

  Fix the struct module DeprecationWarnings that zipfile was triggering by
  removing all use of signed struct values.

  test_zipfile and test_zipfile64 pass.  no more warnings.
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  r61593 | raymond.hettinger | 2008-03-19 04:56:59 +0100 (Mi, 19 Mär 2008) | 1 line

  Fix compiler warning.
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  r61595 | martin.v.loewis | 2008-03-19 05:39:13 +0100 (Mi, 19 Mär 2008) | 2 lines

  Issue #2400: Allow relative imports to "import *".
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  r61605 | martin.v.loewis | 2008-03-19 07:00:28 +0100 (Mi, 19 Mär 2008) | 2 lines

  Import relimport using a relative import.
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  r61606 | trent.nelson | 2008-03-19 07:28:24 +0100 (Mi, 19 Mär 2008) | 1 line

  Issue2290: Support x64 Windows builds that live in pcbuild/amd64.  Without it, sysutils._python_build() returns the wrong directory, which causes the test_get_config_h_filename method in Lib/distutils/tests/test_sysconfig.py to fail.
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  r61613 | trent.nelson | 2008-03-19 08:45:19 +0100 (Mi, 19 Mär 2008) | 3 lines

  Refine the Visual Studio 2008 build solution in order to improve how we deal with external components, as well as fixing outstanding issues with Windows x64 build support.  Introduce two new .vcproj files, _bsddb44.vcproj and sqlite3.vcproj, which replace the previous pre-link event scripts for _bsddb and _sqlite3 respectively.  The new project files inherit from our property files as if they were any other Python module.  This has numerous benefits.  First, the components get built with exactly the same compiler flags and settings as the rest of Python.  Second, it makes it much easier to debug problems in the external components when they're part of the build system.  Third, they'll benefit from profile guided optimisation in the release builds, just like the rest of Python core.

  I've also introduced a slightly new pattern for managing externals in subversion.  New components get checked in as <name>-<version>.x, where <version> matches the exact vendor version string.  After the initial import of the external component, the .x is tagged as .0 (i.e. tcl-8.4.18.x -> tcl-8.4.18.0).  Some components may not need any tweaking, whereas there are others that might (tcl/tk fall into this bucket).  In that case, the relevant modifications are made to the .x branch, which will be subsequently tagged as .1 (and then n+1 going forward) when they build successfully and all tests pass.  Buildbots will be converted to rely on these explicit tags only, which makes it easy for us to switch them over to a new version as and when required.  (Simple change to external(-amd64).bat: if we've bumped tcl to 8.4.18.1, change the .bat to rmdir 8.4.18.0 if it exists and check out a new .1 copy.)
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  r61614 | trent.nelson | 2008-03-19 08:56:39 +0100 (Mi, 19 Mär 2008) | 1 line

  Remove extraneous apostrophe and semi-colon from AdditionalIncludeDirectories.
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  r61615 | georg.brandl | 2008-03-19 08:56:40 +0100 (Mi, 19 Mär 2008) | 2 lines

  Remove footnote from versionchanged as it upsets LaTeX.
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  r61616 | georg.brandl | 2008-03-19 08:57:57 +0100 (Mi, 19 Mär 2008) | 2 lines

  Another one.
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  r61618 | trent.nelson | 2008-03-19 09:06:03 +0100 (Mi, 19 Mär 2008) | 1 line

  Fix the tcl-8.4.18.1 path and make sure we cd into the right directory when building tcl/tk.
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  r61621 | trent.nelson | 2008-03-19 10:23:08 +0100 (Mi, 19 Mär 2008) | 1 line

  Lets have another try at getting the Windows buildbots in a consistent state before rebuilding using the new process.
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  r61622 | eric.smith | 2008-03-19 13:09:55 +0100 (Mi, 19 Mär 2008) | 2 lines

  Use test.test_support.captured_stdout instead of a custom contextmanager.
  Thanks Nick Coghlan.
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  r61623 | eric.smith | 2008-03-19 13:15:10 +0100 (Mi, 19 Mär 2008) | 1 line

  Trivial typo.
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  r61625 | thomas.heller | 2008-03-19 17:10:57 +0100 (Mi, 19 Mär 2008) | 2 lines

  Checkout sqlite-source when it is not there.
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  r61627 | brett.cannon | 2008-03-19 17:50:13 +0100 (Mi, 19 Mär 2008) | 5 lines

  test_nis would fail if test.test_support.verbose was true but NIS was not set
  up on the machine.

  Closes issue2411. Thanks Michael Bishop.
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  r61631 | brett.cannon | 2008-03-19 18:37:43 +0100 (Mi, 19 Mär 2008) | 2 lines

  Use sys.py3kwarning instead of trying to trigger a Py3k-related warning.
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  r61632 | raymond.hettinger | 2008-03-19 18:45:19 +0100 (Mi, 19 Mär 2008) | 1 line

  Issue 2354: Fix-up compare warning.  Patch contributed by Jeff Balogh.
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  r61633 | raymond.hettinger | 2008-03-19 18:58:59 +0100 (Mi, 19 Mär 2008) | 1 line

  The filter() function does support a None argument in Py3.0.
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  r61634 | raymond.hettinger | 2008-03-19 19:01:58 +0100 (Mi, 19 Mär 2008) | 1 line

  Remove itertools warnings I had added before the 2-to-3 handled the migration.
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2008-03-19 21:50:51 +00:00

141 lines
4.8 KiB
Python

# $Id$
#
# Copyright (C) 2005-2007 Gregory P. Smith (greg@krypto.org)
# Licensed to PSF under a Contributor Agreement.
#
__doc__ = """hashlib module - A common interface to many hash functions.
new(name, data=b'') - returns a new hash object implementing the
given hash function; initializing the hash
using the given binary data.
Named constructor functions are also available, these are faster
than using new(name):
md5(), sha1(), sha224(), sha256(), sha384(), and sha512()
More algorithms may be available on your platform but the above are
guaranteed to exist.
NOTE: If you want the adler32 or crc32 hash functions they are available in
the zlib module.
Choose your hash function wisely. Some have known collision weaknesses.
sha384 and sha512 will be slow on 32 bit platforms.
Hash objects have these methods:
- update(arg): Update the hash object with the bytes in arg. Repeated calls
are equivalent to a single call with the concatenation of all
the arguments.
- digest(): Return the digest of the bytes passed to the update() method
so far.
- hexdigest(): Like digest() except the digest is returned as a unicode
object of double length, containing only hexadecimal digits.
- copy(): Return a copy (clone) of the hash object. This can be used to
efficiently compute the digests of strings that share a common
initial substring.
For example, to obtain the digest of the string 'Nobody inspects the
spammish repetition':
>>> import hashlib
>>> m = hashlib.md5()
>>> m.update(b"Nobody inspects")
>>> m.update(b" the spammish repetition")
>>> m.digest()
b'\xbbd\x9c\x83\xdd\x1e\xa5\xc9\xd9\xde\xc9\xa1\x8d\xf0\xff\xe9'
More condensed:
>>> hashlib.sha224(b"Nobody inspects the spammish repetition").hexdigest()
'a4337bc45a8fc544c03f52dc550cd6e1e87021bc896588bd79e901e2'
"""
def __get_builtin_constructor(name):
if name in ('SHA1', 'sha1'):
import _sha1
return _sha1.sha1
elif name in ('MD5', 'md5'):
import _md5
return _md5.md5
elif name in ('SHA256', 'sha256', 'SHA224', 'sha224'):
import _sha256
bs = name[3:]
if bs == '256':
return _sha256.sha256
elif bs == '224':
return _sha256.sha224
elif name in ('SHA512', 'sha512', 'SHA384', 'sha384'):
import _sha512
bs = name[3:]
if bs == '512':
return _sha512.sha512
elif bs == '384':
return _sha512.sha384
raise ValueError("unsupported hash type")
def __py_new(name, data=b''):
"""new(name, data=b'') - Return a new hashing object using the named algorithm;
optionally initialized with data (which must be bytes).
"""
return __get_builtin_constructor(name)(data)
def __hash_new(name, data=b''):
"""new(name, data=b'') - Return a new hashing object using the named algorithm;
optionally initialized with data (which must be bytes).
"""
try:
return _hashlib.new(name, data)
except ValueError:
# If the _hashlib module (OpenSSL) doesn't support the named
# hash, try using our builtin implementations.
# This allows for SHA224/256 and SHA384/512 support even though
# the OpenSSL library prior to 0.9.8 doesn't provide them.
return __get_builtin_constructor(name)(data)
try:
import _hashlib
# use the wrapper of the C implementation
new = __hash_new
for opensslFuncName in filter(lambda n: n.startswith('openssl_'), dir(_hashlib)):
funcName = opensslFuncName[len('openssl_'):]
try:
# try them all, some may not work due to the OpenSSL
# version not supporting that algorithm.
f = getattr(_hashlib, opensslFuncName)
f()
# Use the C function directly (very fast)
exec(funcName + ' = f')
except ValueError:
try:
# Use the builtin implementation directly (fast)
exec(funcName + ' = __get_builtin_constructor(funcName)')
except ValueError:
# this one has no builtin implementation, don't define it
pass
# clean up our locals
del f
del opensslFuncName
del funcName
except ImportError:
# We don't have the _hashlib OpenSSL module?
# use the built in legacy interfaces via a wrapper function
new = __py_new
# lookup the C function to use directly for the named constructors
md5 = __get_builtin_constructor('md5')
sha1 = __get_builtin_constructor('sha1')
sha224 = __get_builtin_constructor('sha224')
sha256 = __get_builtin_constructor('sha256')
sha384 = __get_builtin_constructor('sha384')
sha512 = __get_builtin_constructor('sha512')