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hashlib.pyo
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2008-10-13
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# Source Generated with Decompyle++
# File: in.pyo (Python 2.5)
'''hashlib module - A common interface to many hash functions.
new(name, string=\'\') - returns a new hash object implementing the
given hash function; initializing the hash
using the given string data.
Named constructor functions are also available, these are much faster
than using new():
md5(), sha1(), sha224(), sha256(), sha384(), and sha512()
More algorithms may be available on your platform but the above are
guaranteed to exist.
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 string arg. Repeated calls
are equivalent to a single call with the concatenation of all
the arguments.
- digest(): Return the digest of the strings passed to the update() method
so far. This may contain non-ASCII characters, including
NUL bytes.
- hexdigest(): Like digest() except the digest is returned as a string 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("Nobody inspects")
>>> m.update(" the spammish repetition")
>>> m.digest()
\'\\xbbd\\x9c\\x83\\xdd\\x1e\\xa5\\xc9\\xd9\\xde\\xc9\\xa1\\x8d\\xf0\\xff\\xe9\'
More condensed:
>>> hashlib.sha224("Nobody inspects the spammish repetition").hexdigest()
\'a4337bc45a8fc544c03f52dc550cd6e1e87021bc896588bd79e901e2\'
'''
def __get_builtin_constructor(name):
if name in ('SHA1', 'sha1'):
import _sha as _sha
return _sha.new
elif name in ('MD5', 'md5'):
import _md5 as _md5
return _md5.new
elif name in ('SHA256', 'sha256', 'SHA224', 'sha224'):
import _sha256 as _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 as _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, string = ''):
return __get_builtin_constructor(name)(string)
def __hash_new(name, string = ''):
try:
return _hashlib.new(name, string)
except ValueError:
return __get_builtin_constructor(name)(string)
try:
import _hashlib
new = __hash_new
for opensslFuncName in filter((lambda n: n.startswith('openssl_')), dir(_hashlib)):
funcName = opensslFuncName[len('openssl_'):]
try:
f = getattr(_hashlib, opensslFuncName)
f()
exec funcName + ' = f'
continue
except ValueError:
try:
exec funcName + ' = __get_builtin_constructor(funcName)'
except ValueError:
pass
except:
None<EXCEPTION MATCH>ValueError
None<EXCEPTION MATCH>ValueError
del f
del opensslFuncName
del funcName
except ImportError:
new = __py_new
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')