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Polina
2026-07-02 18:49:34 +00:00
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venv/Lib/site-packages/passlib/handlers/sha1_crypt.py Normal file
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"""passlib.handlers.sha1_crypt
"""
#=============================================================================
# imports
#=============================================================================
# core
import logging; log = logging.getLogger(__name__)
# site
# pkg
from passlib.utils import safe_crypt, test_crypt
from passlib.utils.binary import h64
from passlib.utils.compat import u, unicode, irange
from passlib.crypto.digest import compile_hmac
import passlib.utils.handlers as uh
# local
__all__ = [
]
#=============================================================================
# sha1-crypt
#=============================================================================
_BNULL = b'\x00'
class sha1_crypt(uh.HasManyBackends, uh.HasRounds, uh.HasSalt, uh.GenericHandler):
"""This class implements the SHA1-Crypt password hash, and follows the :ref:`password-hash-api`.
It supports a variable-length salt, and a variable number of rounds.
The :meth:`~passlib.ifc.PasswordHash.using` method accepts the following optional keywords:
:type salt: str
:param salt:
Optional salt string.
If not specified, an 8 character one will be autogenerated (this is recommended).
If specified, it must be 0-64 characters, drawn from the regexp range ``[./0-9A-Za-z]``.
:type salt_size: int
:param salt_size:
Optional number of bytes to use when autogenerating new salts.
Defaults to 8 bytes, but can be any value between 0 and 64.
:type rounds: int
:param rounds:
Optional number of rounds to use.
Defaults to 480000, must be between 1 and 4294967295, inclusive.
:type relaxed: bool
:param relaxed:
By default, providing an invalid value for one of the other
keywords will result in a :exc:`ValueError`. If ``relaxed=True``,
and the error can be corrected, a :exc:`~passlib.exc.PasslibHashWarning`
will be issued instead. Correctable errors include ``rounds``
that are too small or too large, and ``salt`` strings that are too long.
.. versionadded:: 1.6
"""
#===================================================================
# class attrs
#===================================================================
#--GenericHandler--
name = "sha1_crypt"
setting_kwds = ("salt", "salt_size", "rounds")
ident = u("$sha1$")
checksum_size = 28
checksum_chars = uh.HASH64_CHARS
#--HasSalt--
default_salt_size = 8
max_salt_size = 64
salt_chars = uh.HASH64_CHARS
#--HasRounds--
default_rounds = 480000 # current passlib default
min_rounds = 1 # really, this should be higher.
max_rounds = 4294967295 # 32-bit integer limit
rounds_cost = "linear"
#===================================================================
# formatting
#===================================================================
@classmethod
def from_string(cls, hash):
rounds, salt, chk = uh.parse_mc3(hash, cls.ident, handler=cls)
return cls(rounds=rounds, salt=salt, checksum=chk)
def to_string(self, config=False):
chk = None if config else self.checksum
return uh.render_mc3(self.ident, self.rounds, self.salt, chk)
#===================================================================
# backend
#===================================================================
backends = ("os_crypt", "builtin")
#---------------------------------------------------------------
# os_crypt backend
#---------------------------------------------------------------
@classmethod
def _load_backend_os_crypt(cls):
if test_crypt("test", '$sha1$1$Wq3GL2Vp$C8U25GvfHS8qGHim'
'ExLaiSFlGkAe'):
cls._set_calc_checksum_backend(cls._calc_checksum_os_crypt)
return True
else:
return False
def _calc_checksum_os_crypt(self, secret):
config = self.to_string(config=True)
hash = safe_crypt(secret, config)
if hash is None:
# py3's crypt.crypt() can't handle non-utf8 bytes.
# fallback to builtin alg, which is always available.
return self._calc_checksum_builtin(secret)
if not hash.startswith(config) or len(hash) != len(config) + 29:
raise uh.exc.CryptBackendError(self, config, hash)
return hash[-28:]
#---------------------------------------------------------------
# builtin backend
#---------------------------------------------------------------
@classmethod
def _load_backend_builtin(cls):
cls._set_calc_checksum_backend(cls._calc_checksum_builtin)
return True
def _calc_checksum_builtin(self, secret):
if isinstance(secret, unicode):
secret = secret.encode("utf-8")
if _BNULL in secret:
raise uh.exc.NullPasswordError(self)
rounds = self.rounds
# NOTE: this seed value is NOT the same as the config string
result = (u("%s$sha1$%s") % (self.salt, rounds)).encode("ascii")
# NOTE: this algorithm is essentially PBKDF1, modified to use HMAC.
keyed_hmac = compile_hmac("sha1", secret)
for _ in irange(rounds):
result = keyed_hmac(result)
return h64.encode_transposed_bytes(result, self._chk_offsets).decode("ascii")
_chk_offsets = [
2,1,0,
5,4,3,
8,7,6,
11,10,9,
14,13,12,
17,16,15,
0,19,18,
]
#===================================================================
# eoc
#===================================================================
#=============================================================================
# eof
#=============================================================================

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venv/Lib/site-packages/passlib/handlers/sha2_crypt.py Normal file
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"""passlib.handlers.sha2_crypt - SHA256-Crypt / SHA512-Crypt"""
#=============================================================================
# imports
#=============================================================================
# core
import hashlib
import logging; log = logging.getLogger(__name__)
# site
# pkg
from passlib.utils import safe_crypt, test_crypt, \
repeat_string, to_unicode
from passlib.utils.binary import h64
from passlib.utils.compat import byte_elem_value, u, \
uascii_to_str, unicode
import passlib.utils.handlers as uh
# local
__all__ = [
"sha512_crypt",
"sha256_crypt",
]
#=============================================================================
# pure-python backend, used by both sha256_crypt & sha512_crypt
# when crypt.crypt() backend is not available.
#=============================================================================
_BNULL = b'\x00'
# pre-calculated offsets used to speed up C digest stage (see notes below).
# sequence generated using the following:
##perms_order = "p,pp,ps,psp,sp,spp".split(",")
##def offset(i):
## key = (("p" if i % 2 else "") + ("s" if i % 3 else "") +
## ("p" if i % 7 else "") + ("" if i % 2 else "p"))
## return perms_order.index(key)
##_c_digest_offsets = [(offset(i), offset(i+1)) for i in range(0,42,2)]
_c_digest_offsets = (
(0, 3), (5, 1), (5, 3), (1, 2), (5, 1), (5, 3), (1, 3),
(4, 1), (5, 3), (1, 3), (5, 0), (5, 3), (1, 3), (5, 1),
(4, 3), (1, 3), (5, 1), (5, 2), (1, 3), (5, 1), (5, 3),
)
# map used to transpose bytes when encoding final sha256_crypt digest
_256_transpose_map = (
20, 10, 0, 11, 1, 21, 2, 22, 12, 23, 13, 3, 14, 4, 24, 5,
25, 15, 26, 16, 6, 17, 7, 27, 8, 28, 18, 29, 19, 9, 30, 31,
)
# map used to transpose bytes when encoding final sha512_crypt digest
_512_transpose_map = (
42, 21, 0, 1, 43, 22, 23, 2, 44, 45, 24, 3, 4, 46, 25, 26,
5, 47, 48, 27, 6, 7, 49, 28, 29, 8, 50, 51, 30, 9, 10, 52,
31, 32, 11, 53, 54, 33, 12, 13, 55, 34, 35, 14, 56, 57, 36, 15,
16, 58, 37, 38, 17, 59, 60, 39, 18, 19, 61, 40, 41, 20, 62, 63,
)
def _raw_sha2_crypt(pwd, salt, rounds, use_512=False):
"""perform raw sha256-crypt / sha512-crypt
this function provides a pure-python implementation of the internals
for the SHA256-Crypt and SHA512-Crypt algorithms; it doesn't
handle any of the parsing/validation of the hash strings themselves.
:arg pwd: password chars/bytes to hash
:arg salt: salt chars to use
:arg rounds: linear rounds cost
:arg use_512: use sha512-crypt instead of sha256-crypt mode
:returns:
encoded checksum chars
"""
#===================================================================
# init & validate inputs
#===================================================================
# NOTE: the setup portion of this algorithm scales ~linearly in time
# with the size of the password, making it vulnerable to a DOS from
# unreasonably large inputs. the following code has some optimizations
# which would make things even worse, using O(pwd_len**2) memory
# when calculating digest P.
#
# to mitigate these two issues: 1) this code switches to a
# O(pwd_len)-memory algorithm for passwords that are much larger
# than average, and 2) Passlib enforces a library-wide max limit on
# the size of passwords it will allow, to prevent this algorithm and
# others from being DOSed in this way (see passlib.exc.PasswordSizeError
# for details).
# validate secret
if isinstance(pwd, unicode):
# XXX: not sure what official unicode policy is, using this as default
pwd = pwd.encode("utf-8")
assert isinstance(pwd, bytes)
if _BNULL in pwd:
raise uh.exc.NullPasswordError(sha512_crypt if use_512 else sha256_crypt)
pwd_len = len(pwd)
# validate rounds
assert 1000 <= rounds <= 999999999, "invalid rounds"
# NOTE: spec says out-of-range rounds should be clipped, instead of
# causing an error. this function assumes that's been taken care of
# by the handler class.
# validate salt
assert isinstance(salt, unicode), "salt not unicode"
salt = salt.encode("ascii")
salt_len = len(salt)
assert salt_len < 17, "salt too large"
# NOTE: spec says salts larger than 16 bytes should be truncated,
# instead of causing an error. this function assumes that's been
# taken care of by the handler class.
# load sha256/512 specific constants
if use_512:
hash_const = hashlib.sha512
transpose_map = _512_transpose_map
else:
hash_const = hashlib.sha256
transpose_map = _256_transpose_map
#===================================================================
# digest B - used as subinput to digest A
#===================================================================
db = hash_const(pwd + salt + pwd).digest()
#===================================================================
# digest A - used to initialize first round of digest C
#===================================================================
# start out with pwd + salt
a_ctx = hash_const(pwd + salt)
a_ctx_update = a_ctx.update
# add pwd_len bytes of b, repeating b as many times as needed.
a_ctx_update(repeat_string(db, pwd_len))
# for each bit in pwd_len: add b if it's 1, or pwd if it's 0
i = pwd_len
while i:
a_ctx_update(db if i & 1 else pwd)
i >>= 1
# finish A
da = a_ctx.digest()
#===================================================================
# digest P from password - used instead of password itself
# when calculating digest C.
#===================================================================
if pwd_len < 96:
# this method is faster under python, but uses O(pwd_len**2) memory;
# so we don't use it for larger passwords to avoid a potential DOS.
dp = repeat_string(hash_const(pwd * pwd_len).digest(), pwd_len)
else:
# this method is slower under python, but uses a fixed amount of memory.
tmp_ctx = hash_const(pwd)
tmp_ctx_update = tmp_ctx.update
i = pwd_len-1
while i:
tmp_ctx_update(pwd)
i -= 1
dp = repeat_string(tmp_ctx.digest(), pwd_len)
assert len(dp) == pwd_len
#===================================================================
# digest S - used instead of salt itself when calculating digest C
#===================================================================
ds = hash_const(salt * (16 + byte_elem_value(da[0]))).digest()[:salt_len]
assert len(ds) == salt_len, "salt_len somehow > hash_len!"
#===================================================================
# digest C - for a variable number of rounds, combine A, S, and P
# digests in various ways; in order to burn CPU time.
#===================================================================
# NOTE: the original SHA256/512-Crypt specification performs the C digest
# calculation using the following loop:
#
##dc = da
##i = 0
##while i < rounds:
## tmp_ctx = hash_const(dp if i & 1 else dc)
## if i % 3:
## tmp_ctx.update(ds)
## if i % 7:
## tmp_ctx.update(dp)
## tmp_ctx.update(dc if i & 1 else dp)
## dc = tmp_ctx.digest()
## i += 1
#
# The code Passlib uses (below) implements an equivalent algorithm,
# it's just been heavily optimized to pre-calculate a large number
# of things beforehand. It works off of a couple of observations
# about the original algorithm:
#
# 1. each round is a combination of 'dc', 'ds', and 'dp'; determined
# by the whether 'i' a multiple of 2,3, and/or 7.
# 2. since lcm(2,3,7)==42, the series of combinations will repeat
# every 42 rounds.
# 3. even rounds 0-40 consist of 'hash(dc + round-specific-constant)';
# while odd rounds 1-41 consist of hash(round-specific-constant + dc)
#
# Using these observations, the following code...
# * calculates the round-specific combination of ds & dp for each round 0-41
# * runs through as many 42-round blocks as possible
# * runs through as many pairs of rounds as possible for remaining rounds
# * performs once last round if the total rounds should be odd.
#
# this cuts out a lot of the control overhead incurred when running the
# original loop 40,000+ times in python, resulting in ~20% increase in
# speed under CPython (though still 2x slower than glibc crypt)
# prepare the 6 combinations of ds & dp which are needed
# (order of 'perms' must match how _c_digest_offsets was generated)
dp_dp = dp+dp
dp_ds = dp+ds
perms = [dp, dp_dp, dp_ds, dp_ds+dp, ds+dp, ds+dp_dp]
# build up list of even-round & odd-round constants,
# and store in 21-element list as (even,odd) pairs.
data = [ (perms[even], perms[odd]) for even, odd in _c_digest_offsets]
# perform as many full 42-round blocks as possible
dc = da
blocks, tail = divmod(rounds, 42)
while blocks:
for even, odd in data:
dc = hash_const(odd + hash_const(dc + even).digest()).digest()
blocks -= 1
# perform any leftover rounds
if tail:
# perform any pairs of rounds
pairs = tail>>1
for even, odd in data[:pairs]:
dc = hash_const(odd + hash_const(dc + even).digest()).digest()
# if rounds was odd, do one last round (since we started at 0,
# last round will be an even-numbered round)
if tail & 1:
dc = hash_const(dc + data[pairs][0]).digest()
#===================================================================
# encode digest using appropriate transpose map
#===================================================================
return h64.encode_transposed_bytes(dc, transpose_map).decode("ascii")
#=============================================================================
# handlers
#=============================================================================
_UROUNDS = u("rounds=")
_UDOLLAR = u("$")
_UZERO = u("0")
class _SHA2_Common(uh.HasManyBackends, uh.HasRounds, uh.HasSalt,
uh.GenericHandler):
"""class containing common code shared by sha256_crypt & sha512_crypt"""
#===================================================================
# class attrs
#===================================================================
# name - set by subclass
setting_kwds = ("salt", "rounds", "implicit_rounds", "salt_size")
# ident - set by subclass
checksum_chars = uh.HASH64_CHARS
# checksum_size - set by subclass
max_salt_size = 16
salt_chars = uh.HASH64_CHARS
min_rounds = 1000 # bounds set by spec
max_rounds = 999999999 # bounds set by spec
rounds_cost = "linear"
_cdb_use_512 = False # flag for _calc_digest_builtin()
_rounds_prefix = None # ident + _UROUNDS
#===================================================================
# methods
#===================================================================
implicit_rounds = False
def __init__(self, implicit_rounds=None, **kwds):
super(_SHA2_Common, self).__init__(**kwds)
# if user calls hash() w/ 5000 rounds, default to compact form.
if implicit_rounds is None:
implicit_rounds = (self.use_defaults and self.rounds == 5000)
self.implicit_rounds = implicit_rounds
def _parse_salt(self, salt):
# required per SHA2-crypt spec -- truncate config salts rather than throwing error
return self._norm_salt(salt, relaxed=self.checksum is None)
def _parse_rounds(self, rounds):
# required per SHA2-crypt spec -- clip config rounds rather than throwing error
return self._norm_rounds(rounds, relaxed=self.checksum is None)
@classmethod
def from_string(cls, hash):
# basic format this parses -
# $5$[rounds=<rounds>$]<salt>[$<checksum>]
# TODO: this *could* use uh.parse_mc3(), except that the rounds
# portion has a slightly different grammar.
# convert to unicode, check for ident prefix, split on dollar signs.
hash = to_unicode(hash, "ascii", "hash")
ident = cls.ident
if not hash.startswith(ident):
raise uh.exc.InvalidHashError(cls)
assert len(ident) == 3
parts = hash[3:].split(_UDOLLAR)
# extract rounds value
if parts[0].startswith(_UROUNDS):
assert len(_UROUNDS) == 7
rounds = parts.pop(0)[7:]
if rounds.startswith(_UZERO) and rounds != _UZERO:
raise uh.exc.ZeroPaddedRoundsError(cls)
rounds = int(rounds)
implicit_rounds = False
else:
rounds = 5000
implicit_rounds = True
# rest should be salt and checksum
if len(parts) == 2:
salt, chk = parts
elif len(parts) == 1:
salt = parts[0]
chk = None
else:
raise uh.exc.MalformedHashError(cls)
# return new object
return cls(
rounds=rounds,
salt=salt,
checksum=chk or None,
implicit_rounds=implicit_rounds,
)
def to_string(self):
if self.rounds == 5000 and self.implicit_rounds:
hash = u("%s%s$%s") % (self.ident, self.salt,
self.checksum or u(''))
else:
hash = u("%srounds=%d$%s$%s") % (self.ident, self.rounds,
self.salt, self.checksum or u(''))
return uascii_to_str(hash)
#===================================================================
# backends
#===================================================================
backends = ("os_crypt", "builtin")
#---------------------------------------------------------------
# os_crypt backend
#---------------------------------------------------------------
#: test hash for OS detection -- provided by subclass
_test_hash = None
@classmethod
def _load_backend_os_crypt(cls):
if test_crypt(*cls._test_hash):
cls._set_calc_checksum_backend(cls._calc_checksum_os_crypt)
return True
else:
return False
def _calc_checksum_os_crypt(self, secret):
config = self.to_string()
hash = safe_crypt(secret, config)
if hash is None:
# py3's crypt.crypt() can't handle non-utf8 bytes.
# fallback to builtin alg, which is always available.
return self._calc_checksum_builtin(secret)
# NOTE: avoiding full parsing routine via from_string().checksum,
# and just extracting the bit we need.
cs = self.checksum_size
if not hash.startswith(self.ident) or hash[-cs-1] != _UDOLLAR:
raise uh.exc.CryptBackendError(self, config, hash)
return hash[-cs:]
#---------------------------------------------------------------
# builtin backend
#---------------------------------------------------------------
@classmethod
def _load_backend_builtin(cls):
cls._set_calc_checksum_backend(cls._calc_checksum_builtin)
return True
def _calc_checksum_builtin(self, secret):
return _raw_sha2_crypt(secret, self.salt, self.rounds,
self._cdb_use_512)
#===================================================================
# eoc
#===================================================================
class sha256_crypt(_SHA2_Common):
"""This class implements the SHA256-Crypt password hash, and follows the :ref:`password-hash-api`.
It supports a variable-length salt, and a variable number of rounds.
The :meth:`~passlib.ifc.PasswordHash.using` method accepts the following optional keywords:
:type salt: str
:param salt:
Optional salt string.
If not specified, one will be autogenerated (this is recommended).
If specified, it must be 0-16 characters, drawn from the regexp range ``[./0-9A-Za-z]``.
:type rounds: int
:param rounds:
Optional number of rounds to use.
Defaults to 535000, must be between 1000 and 999999999, inclusive.
.. note::
per the official specification, when the rounds parameter is set to 5000,
it may be omitted from the hash string.
:type relaxed: bool
:param relaxed:
By default, providing an invalid value for one of the other
keywords will result in a :exc:`ValueError`. If ``relaxed=True``,
and the error can be corrected, a :exc:`~passlib.exc.PasslibHashWarning`
will be issued instead. Correctable errors include ``rounds``
that are too small or too large, and ``salt`` strings that are too long.
.. versionadded:: 1.6
..
commented out, currently only supported by :meth:`hash`, and not via :meth:`using`:
:type implicit_rounds: bool
:param implicit_rounds:
this is an internal option which generally doesn't need to be touched.
this flag determines whether the hash should omit the rounds parameter
when encoding it to a string; this is only permitted by the spec for rounds=5000,
and the flag is ignored otherwise. the spec requires the two different
encodings be preserved as they are, instead of normalizing them.
"""
#===================================================================
# class attrs
#===================================================================
name = "sha256_crypt"
ident = u("$5$")
checksum_size = 43
# NOTE: using 25/75 weighting of builtin & os_crypt backends
default_rounds = 535000
#===================================================================
# backends
#===================================================================
_test_hash = ("test", "$5$rounds=1000$test$QmQADEXMG8POI5W"
"Dsaeho0P36yK3Tcrgboabng6bkb/")
#===================================================================
# eoc
#===================================================================
#=============================================================================
# sha 512 crypt
#=============================================================================
class sha512_crypt(_SHA2_Common):
"""This class implements the SHA512-Crypt password hash, and follows the :ref:`password-hash-api`.
It supports a variable-length salt, and a variable number of rounds.
The :meth:`~passlib.ifc.PasswordHash.using` method accepts the following optional keywords:
:type salt: str
:param salt:
Optional salt string.
If not specified, one will be autogenerated (this is recommended).
If specified, it must be 0-16 characters, drawn from the regexp range ``[./0-9A-Za-z]``.
:type rounds: int
:param rounds:
Optional number of rounds to use.
Defaults to 656000, must be between 1000 and 999999999, inclusive.
.. note::
per the official specification, when the rounds parameter is set to 5000,
it may be omitted from the hash string.
:type relaxed: bool
:param relaxed:
By default, providing an invalid value for one of the other
keywords will result in a :exc:`ValueError`. If ``relaxed=True``,
and the error can be corrected, a :exc:`~passlib.exc.PasslibHashWarning`
will be issued instead. Correctable errors include ``rounds``
that are too small or too large, and ``salt`` strings that are too long.
.. versionadded:: 1.6
..
commented out, currently only supported by :meth:`hash`, and not via :meth:`using`:
:type implicit_rounds: bool
:param implicit_rounds:
this is an internal option which generally doesn't need to be touched.
this flag determines whether the hash should omit the rounds parameter
when encoding it to a string; this is only permitted by the spec for rounds=5000,
and the flag is ignored otherwise. the spec requires the two different
encodings be preserved as they are, instead of normalizing them.
"""
#===================================================================
# class attrs
#===================================================================
name = "sha512_crypt"
ident = u("$6$")
checksum_size = 86
_cdb_use_512 = True
# NOTE: using 25/75 weighting of builtin & os_crypt backends
default_rounds = 656000
#===================================================================
# backend
#===================================================================
_test_hash = ("test", "$6$rounds=1000$test$2M/Lx6Mtobqj"
"Ljobw0Wmo4Q5OFx5nVLJvmgseatA6oMn"
"yWeBdRDx4DU.1H3eGmse6pgsOgDisWBG"
"I5c7TZauS0")
#===================================================================
# eoc
#===================================================================
#=============================================================================
# eof
#=============================================================================

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venv/Lib/site-packages/passlib/handlers/sun_md5_crypt.py Normal file
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"""passlib.handlers.sun_md5_crypt - Sun's Md5 Crypt, used on Solaris
.. warning::
This implementation may not reproduce
the original Solaris behavior in some border cases.
See documentation for details.
"""
#=============================================================================
# imports
#=============================================================================
# core
from hashlib import md5
import re
import logging; log = logging.getLogger(__name__)
from warnings import warn
# site
# pkg
from passlib.utils import to_unicode
from passlib.utils.binary import h64
from passlib.utils.compat import byte_elem_value, irange, u, \
uascii_to_str, unicode, str_to_bascii
import passlib.utils.handlers as uh
# local
__all__ = [
"sun_md5_crypt",
]
#=============================================================================
# backend
#=============================================================================
# constant data used by alg - Hamlet act 3 scene 1 + null char
# exact bytes as in http://www.ibiblio.org/pub/docs/books/gutenberg/etext98/2ws2610.txt
# from Project Gutenberg.
MAGIC_HAMLET = (
b"To be, or not to be,--that is the question:--\n"
b"Whether 'tis nobler in the mind to suffer\n"
b"The slings and arrows of outrageous fortune\n"
b"Or to take arms against a sea of troubles,\n"
b"And by opposing end them?--To die,--to sleep,--\n"
b"No more; and by a sleep to say we end\n"
b"The heartache, and the thousand natural shocks\n"
b"That flesh is heir to,--'tis a consummation\n"
b"Devoutly to be wish'd. To die,--to sleep;--\n"
b"To sleep! perchance to dream:--ay, there's the rub;\n"
b"For in that sleep of death what dreams may come,\n"
b"When we have shuffled off this mortal coil,\n"
b"Must give us pause: there's the respect\n"
b"That makes calamity of so long life;\n"
b"For who would bear the whips and scorns of time,\n"
b"The oppressor's wrong, the proud man's contumely,\n"
b"The pangs of despis'd love, the law's delay,\n"
b"The insolence of office, and the spurns\n"
b"That patient merit of the unworthy takes,\n"
b"When he himself might his quietus make\n"
b"With a bare bodkin? who would these fardels bear,\n"
b"To grunt and sweat under a weary life,\n"
b"But that the dread of something after death,--\n"
b"The undiscover'd country, from whose bourn\n"
b"No traveller returns,--puzzles the will,\n"
b"And makes us rather bear those ills we have\n"
b"Than fly to others that we know not of?\n"
b"Thus conscience does make cowards of us all;\n"
b"And thus the native hue of resolution\n"
b"Is sicklied o'er with the pale cast of thought;\n"
b"And enterprises of great pith and moment,\n"
b"With this regard, their currents turn awry,\n"
b"And lose the name of action.--Soft you now!\n"
b"The fair Ophelia!--Nymph, in thy orisons\n"
b"Be all my sins remember'd.\n\x00" #<- apparently null at end of C string is included (test vector won't pass otherwise)
)
# NOTE: these sequences are pre-calculated iteration ranges used by X & Y loops w/in rounds function below
xr = irange(7)
_XY_ROUNDS = [
tuple((i,i,i+3) for i in xr), # xrounds 0
tuple((i,i+1,i+4) for i in xr), # xrounds 1
tuple((i,i+8,(i+11)&15) for i in xr), # yrounds 0
tuple((i,(i+9)&15, (i+12)&15) for i in xr), # yrounds 1
]
del xr
def raw_sun_md5_crypt(secret, rounds, salt):
"""given secret & salt, return encoded sun-md5-crypt checksum"""
global MAGIC_HAMLET
assert isinstance(secret, bytes)
assert isinstance(salt, bytes)
# validate rounds
if rounds <= 0:
rounds = 0
real_rounds = 4096 + rounds
# NOTE: spec seems to imply max 'rounds' is 2**32-1
# generate initial digest to start off round 0.
# NOTE: algorithm 'salt' includes full config string w/ trailing "$"
result = md5(secret + salt).digest()
assert len(result) == 16
# NOTE: many things in this function have been inlined (to speed up the loop
# as much as possible), to the point that this code barely resembles
# the algorithm as described in the docs. in particular:
#
# * all accesses to a given bit have been inlined using the formula
# rbitval(bit) = (rval((bit>>3) & 15) >> (bit & 7)) & 1
#
# * the calculation of coinflip value R has been inlined
#
# * the conditional division of coinflip value V has been inlined as
# a shift right of 0 or 1.
#
# * the i, i+3, etc iterations are precalculated in lists.
#
# * the round-based conditional division of x & y is now performed
# by choosing an appropriate precalculated list, so that it only
# calculates the 7 bits which will actually be used.
#
X_ROUNDS_0, X_ROUNDS_1, Y_ROUNDS_0, Y_ROUNDS_1 = _XY_ROUNDS
# NOTE: % appears to be *slightly* slower than &, so we prefer & if possible
round = 0
while round < real_rounds:
# convert last result byte string to list of byte-ints for easy access
rval = [ byte_elem_value(c) for c in result ].__getitem__
# build up X bit by bit
x = 0
xrounds = X_ROUNDS_1 if (rval((round>>3) & 15)>>(round & 7)) & 1 else X_ROUNDS_0
for i, ia, ib in xrounds:
a = rval(ia)
b = rval(ib)
v = rval((a >> (b % 5)) & 15) >> ((b>>(a&7)) & 1)
x |= ((rval((v>>3)&15)>>(v&7))&1) << i
# build up Y bit by bit
y = 0
yrounds = Y_ROUNDS_1 if (rval(((round+64)>>3) & 15)>>(round & 7)) & 1 else Y_ROUNDS_0
for i, ia, ib in yrounds:
a = rval(ia)
b = rval(ib)
v = rval((a >> (b % 5)) & 15) >> ((b>>(a&7)) & 1)
y |= ((rval((v>>3)&15)>>(v&7))&1) << i
# extract x'th and y'th bit, xoring them together to yeild "coin flip"
coin = ((rval(x>>3) >> (x&7)) ^ (rval(y>>3) >> (y&7))) & 1
# construct hash for this round
h = md5(result)
if coin:
h.update(MAGIC_HAMLET)
h.update(unicode(round).encode("ascii"))
result = h.digest()
round += 1
# encode output
return h64.encode_transposed_bytes(result, _chk_offsets)
# NOTE: same offsets as md5_crypt
_chk_offsets = (
12,6,0,
13,7,1,
14,8,2,
15,9,3,
5,10,4,
11,
)
#=============================================================================
# handler
#=============================================================================
class sun_md5_crypt(uh.HasRounds, uh.HasSalt, uh.GenericHandler):
"""This class implements the Sun-MD5-Crypt password hash, and follows the :ref:`password-hash-api`.
It supports a variable-length salt, and a variable number of rounds.
The :meth:`~passlib.ifc.PasswordHash.using` method accepts the following optional keywords:
:type salt: str
:param salt:
Optional salt string.
If not specified, a salt will be autogenerated (this is recommended).
If specified, it must be drawn from the regexp range ``[./0-9A-Za-z]``.
:type salt_size: int
:param salt_size:
If no salt is specified, this parameter can be used to specify
the size (in characters) of the autogenerated salt.
It currently defaults to 8.
:type rounds: int
:param rounds:
Optional number of rounds to use.
Defaults to 34000, must be between 0 and 4294963199, inclusive.
:type bare_salt: bool
:param bare_salt:
Optional flag used to enable an alternate salt digest behavior
used by some hash strings in this scheme.
This flag can be ignored by most users.
Defaults to ``False``.
(see :ref:`smc-bare-salt` for details).
:type relaxed: bool
:param relaxed:
By default, providing an invalid value for one of the other
keywords will result in a :exc:`ValueError`. If ``relaxed=True``,
and the error can be corrected, a :exc:`~passlib.exc.PasslibHashWarning`
will be issued instead. Correctable errors include ``rounds``
that are too small or too large, and ``salt`` strings that are too long.
.. versionadded:: 1.6
"""
#===================================================================
# class attrs
#===================================================================
name = "sun_md5_crypt"
setting_kwds = ("salt", "rounds", "bare_salt", "salt_size")
checksum_chars = uh.HASH64_CHARS
checksum_size = 22
# NOTE: docs say max password length is 255.
# release 9u2
# NOTE: not sure if original crypt has a salt size limit,
# all instances that have been seen use 8 chars.
default_salt_size = 8
max_salt_size = None
salt_chars = uh.HASH64_CHARS
default_rounds = 34000 # current passlib default
min_rounds = 0
max_rounds = 4294963199 ##2**32-1-4096
# XXX: ^ not sure what it does if past this bound... does 32 int roll over?
rounds_cost = "linear"
ident_values = (u("$md5$"), u("$md5,"))
#===================================================================
# instance attrs
#===================================================================
bare_salt = False # flag to indicate legacy hashes that lack "$$" suffix
#===================================================================
# constructor
#===================================================================
def __init__(self, bare_salt=False, **kwds):
self.bare_salt = bare_salt
super(sun_md5_crypt, self).__init__(**kwds)
#===================================================================
# internal helpers
#===================================================================
@classmethod
def identify(cls, hash):
hash = uh.to_unicode_for_identify(hash)
return hash.startswith(cls.ident_values)
@classmethod
def from_string(cls, hash):
hash = to_unicode(hash, "ascii", "hash")
#
# detect if hash specifies rounds value.
# if so, parse and validate it.
# by end, set 'rounds' to int value, and 'tail' containing salt+chk
#
if hash.startswith(u("$md5$")):
rounds = 0
salt_idx = 5
elif hash.startswith(u("$md5,rounds=")):
idx = hash.find(u("$"), 12)
if idx == -1:
raise uh.exc.MalformedHashError(cls, "unexpected end of rounds")
rstr = hash[12:idx]
try:
rounds = int(rstr)
except ValueError:
raise uh.exc.MalformedHashError(cls, "bad rounds")
if rstr != unicode(rounds):
raise uh.exc.ZeroPaddedRoundsError(cls)
if rounds == 0:
# NOTE: not sure if this is forbidden by spec or not;
# but allowing it would complicate things,
# and it should never occur anyways.
raise uh.exc.MalformedHashError(cls, "explicit zero rounds")
salt_idx = idx+1
else:
raise uh.exc.InvalidHashError(cls)
#
# salt/checksum separation is kinda weird,
# to deal cleanly with some backward-compatible workarounds
# implemented by original implementation.
#
chk_idx = hash.rfind(u("$"), salt_idx)
if chk_idx == -1:
# ''-config for $-hash
salt = hash[salt_idx:]
chk = None
bare_salt = True
elif chk_idx == len(hash)-1:
if chk_idx > salt_idx and hash[-2] == u("$"):
raise uh.exc.MalformedHashError(cls, "too many '$' separators")
# $-config for $$-hash
salt = hash[salt_idx:-1]
chk = None
bare_salt = False
elif chk_idx > 0 and hash[chk_idx-1] == u("$"):
# $$-hash
salt = hash[salt_idx:chk_idx-1]
chk = hash[chk_idx+1:]
bare_salt = False
else:
# $-hash
salt = hash[salt_idx:chk_idx]
chk = hash[chk_idx+1:]
bare_salt = True
return cls(
rounds=rounds,
salt=salt,
checksum=chk,
bare_salt=bare_salt,
)
def to_string(self, _withchk=True):
ss = u('') if self.bare_salt else u('$')
rounds = self.rounds
if rounds > 0:
hash = u("$md5,rounds=%d$%s%s") % (rounds, self.salt, ss)
else:
hash = u("$md5$%s%s") % (self.salt, ss)
if _withchk:
chk = self.checksum
hash = u("%s$%s") % (hash, chk)
return uascii_to_str(hash)
#===================================================================
# primary interface
#===================================================================
# TODO: if we're on solaris, check for native crypt() support.
# this will require extra testing, to make sure native crypt
# actually behaves correctly. of particular importance:
# when using ""-config, make sure to append "$x" to string.
def _calc_checksum(self, secret):
# NOTE: no reference for how sun_md5_crypt handles unicode
if isinstance(secret, unicode):
secret = secret.encode("utf-8")
config = str_to_bascii(self.to_string(_withchk=False))
return raw_sun_md5_crypt(secret, self.rounds, config).decode("ascii")
#===================================================================
# eoc
#===================================================================
#=============================================================================
# eof
#=============================================================================

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"""passlib.handlers.nthash - Microsoft Windows -related hashes"""
#=============================================================================
# imports
#=============================================================================
# core
from binascii import hexlify
import logging; log = logging.getLogger(__name__)
from warnings import warn
# site
# pkg
from passlib.utils import to_unicode, right_pad_string
from passlib.utils.compat import unicode
from passlib.crypto.digest import lookup_hash
md4 = lookup_hash("md4").const
import passlib.utils.handlers as uh
# local
__all__ = [
"lmhash",
"nthash",
"bsd_nthash",
"msdcc",
"msdcc2",
]
#=============================================================================
# lanman hash
#=============================================================================
class lmhash(uh.TruncateMixin, uh.HasEncodingContext, uh.StaticHandler):
"""This class implements the Lan Manager Password hash, and follows the :ref:`password-hash-api`.
It has no salt and a single fixed round.
The :meth:`~passlib.ifc.PasswordHash.using` method accepts a single
optional keyword:
:param bool truncate_error:
By default, this will silently truncate passwords larger than 14 bytes.
Setting ``truncate_error=True`` will cause :meth:`~passlib.ifc.PasswordHash.hash`
to raise a :exc:`~passlib.exc.PasswordTruncateError` instead.
.. versionadded:: 1.7
The :meth:`~passlib.ifc.PasswordHash.hash` and :meth:`~passlib.ifc.PasswordHash.verify` methods accept a single
optional keyword:
:type encoding: str
:param encoding:
This specifies what character encoding LMHASH should use when
calculating digest. It defaults to ``cp437``, the most
common encoding encountered.
Note that while this class outputs digests in lower-case hexadecimal,
it will accept upper-case as well.
"""
#===================================================================
# class attrs
#===================================================================
#--------------------
# PasswordHash
#--------------------
name = "lmhash"
setting_kwds = ("truncate_error",)
#--------------------
# GenericHandler
#--------------------
checksum_chars = uh.HEX_CHARS
checksum_size = 32
#--------------------
# TruncateMixin
#--------------------
truncate_size = 14
#--------------------
# custom
#--------------------
default_encoding = "cp437"
#===================================================================
# methods
#===================================================================
@classmethod
def _norm_hash(cls, hash):
return hash.lower()
def _calc_checksum(self, secret):
# check for truncation (during .hash() calls only)
if self.use_defaults:
self._check_truncate_policy(secret)
return hexlify(self.raw(secret, self.encoding)).decode("ascii")
# magic constant used by LMHASH
_magic = b"KGS!@#$%"
@classmethod
def raw(cls, secret, encoding=None):
"""encode password using LANMAN hash algorithm.
:type secret: unicode or utf-8 encoded bytes
:arg secret: secret to hash
:type encoding: str
:arg encoding:
optional encoding to use for unicode inputs.
this defaults to ``cp437``, which is the
common case for most situations.
:returns: returns string of raw bytes
"""
if not encoding:
encoding = cls.default_encoding
# some nice empircal data re: different encodings is at...
# http://www.openwall.com/lists/john-dev/2011/08/01/2
# http://www.freerainbowtables.com/phpBB3/viewtopic.php?t=387&p=12163
from passlib.crypto.des import des_encrypt_block
MAGIC = cls._magic
if isinstance(secret, unicode):
# perform uppercasing while we're still unicode,
# to give a better shot at getting non-ascii chars right.
# (though some codepages do NOT upper-case the same as unicode).
secret = secret.upper().encode(encoding)
elif isinstance(secret, bytes):
# FIXME: just trusting ascii upper will work?
# and if not, how to do codepage specific case conversion?
# we could decode first using <encoding>,
# but *that* might not always be right.
secret = secret.upper()
else:
raise TypeError("secret must be unicode or bytes")
secret = right_pad_string(secret, 14)
return des_encrypt_block(secret[0:7], MAGIC) + \
des_encrypt_block(secret[7:14], MAGIC)
#===================================================================
# eoc
#===================================================================
#=============================================================================
# ntlm hash
#=============================================================================
class nthash(uh.StaticHandler):
"""This class implements the NT Password hash, and follows the :ref:`password-hash-api`.
It has no salt and a single fixed round.
The :meth:`~passlib.ifc.PasswordHash.hash` and :meth:`~passlib.ifc.PasswordHash.genconfig` methods accept no optional keywords.
Note that while this class outputs lower-case hexadecimal digests,
it will accept upper-case digests as well.
"""
#===================================================================
# class attrs
#===================================================================
name = "nthash"
checksum_chars = uh.HEX_CHARS
checksum_size = 32
#===================================================================
# methods
#===================================================================
@classmethod
def _norm_hash(cls, hash):
return hash.lower()
def _calc_checksum(self, secret):
return hexlify(self.raw(secret)).decode("ascii")
@classmethod
def raw(cls, secret):
"""encode password using MD4-based NTHASH algorithm
:arg secret: secret as unicode or utf-8 encoded bytes
:returns: returns string of raw bytes
"""
secret = to_unicode(secret, "utf-8", param="secret")
# XXX: found refs that say only first 128 chars are used.
return md4(secret.encode("utf-16-le")).digest()
@classmethod
def raw_nthash(cls, secret, hex=False):
warn("nthash.raw_nthash() is deprecated, and will be removed "
"in Passlib 1.8, please use nthash.raw() instead",
DeprecationWarning)
ret = nthash.raw(secret)
return hexlify(ret).decode("ascii") if hex else ret
#===================================================================
# eoc
#===================================================================
bsd_nthash = uh.PrefixWrapper("bsd_nthash", nthash, prefix="$3$$", ident="$3$$",
doc="""The class support FreeBSD's representation of NTHASH
(which is compatible with the :ref:`modular-crypt-format`),
and follows the :ref:`password-hash-api`.
It has no salt and a single fixed round.
The :meth:`~passlib.ifc.PasswordHash.hash` and :meth:`~passlib.ifc.PasswordHash.genconfig` methods accept no optional keywords.
""")
##class ntlm_pair(object):
## "combined lmhash & nthash"
## name = "ntlm_pair"
## setting_kwds = ()
## _hash_regex = re.compile(u"^(?P<lm>[0-9a-f]{32}):(?P<nt>[0-9][a-f]{32})$",
## re.I)
##
## @classmethod
## def identify(cls, hash):
## hash = to_unicode(hash, "latin-1", "hash")
## return len(hash) == 65 and cls._hash_regex.match(hash) is not None
##
## @classmethod
## def hash(cls, secret, config=None):
## if config is not None and not cls.identify(config):
## raise uh.exc.InvalidHashError(cls)
## return lmhash.hash(secret) + ":" + nthash.hash(secret)
##
## @classmethod
## def verify(cls, secret, hash):
## hash = to_unicode(hash, "ascii", "hash")
## m = cls._hash_regex.match(hash)
## if not m:
## raise uh.exc.InvalidHashError(cls)
## lm, nt = m.group("lm", "nt")
## # NOTE: verify against both in case encoding issue
## # causes one not to match.
## return lmhash.verify(secret, lm) or nthash.verify(secret, nt)
#=============================================================================
# msdcc v1
#=============================================================================
class msdcc(uh.HasUserContext, uh.StaticHandler):
"""This class implements Microsoft's Domain Cached Credentials password hash,
and follows the :ref:`password-hash-api`.
It has a fixed number of rounds, and uses the associated
username as the salt.
The :meth:`~passlib.ifc.PasswordHash.hash`, :meth:`~passlib.ifc.PasswordHash.genhash`, and :meth:`~passlib.ifc.PasswordHash.verify` methods
have the following optional keywords:
:type user: str
:param user:
String containing name of user account this password is associated with.
This is required to properly calculate the hash.
This keyword is case-insensitive, and should contain just the username
(e.g. ``Administrator``, not ``SOMEDOMAIN\\Administrator``).
Note that while this class outputs lower-case hexadecimal digests,
it will accept upper-case digests as well.
"""
name = "msdcc"
checksum_chars = uh.HEX_CHARS
checksum_size = 32
@classmethod
def _norm_hash(cls, hash):
return hash.lower()
def _calc_checksum(self, secret):
return hexlify(self.raw(secret, self.user)).decode("ascii")
@classmethod
def raw(cls, secret, user):
"""encode password using mscash v1 algorithm
:arg secret: secret as unicode or utf-8 encoded bytes
:arg user: username to use as salt
:returns: returns string of raw bytes
"""
secret = to_unicode(secret, "utf-8", param="secret").encode("utf-16-le")
user = to_unicode(user, "utf-8", param="user").lower().encode("utf-16-le")
return md4(md4(secret).digest() + user).digest()
#=============================================================================
# msdcc2 aka mscash2
#=============================================================================
class msdcc2(uh.HasUserContext, uh.StaticHandler):
"""This class implements version 2 of Microsoft's Domain Cached Credentials
password hash, and follows the :ref:`password-hash-api`.
It has a fixed number of rounds, and uses the associated
username as the salt.
The :meth:`~passlib.ifc.PasswordHash.hash`, :meth:`~passlib.ifc.PasswordHash.genhash`, and :meth:`~passlib.ifc.PasswordHash.verify` methods
have the following extra keyword:
:type user: str
:param user:
String containing name of user account this password is associated with.
This is required to properly calculate the hash.
This keyword is case-insensitive, and should contain just the username
(e.g. ``Administrator``, not ``SOMEDOMAIN\\Administrator``).
"""
name = "msdcc2"
checksum_chars = uh.HEX_CHARS
checksum_size = 32
@classmethod
def _norm_hash(cls, hash):
return hash.lower()
def _calc_checksum(self, secret):
return hexlify(self.raw(secret, self.user)).decode("ascii")
@classmethod
def raw(cls, secret, user):
"""encode password using msdcc v2 algorithm
:type secret: unicode or utf-8 bytes
:arg secret: secret
:type user: str
:arg user: username to use as salt
:returns: returns string of raw bytes
"""
from passlib.crypto.digest import pbkdf2_hmac
secret = to_unicode(secret, "utf-8", param="secret").encode("utf-16-le")
user = to_unicode(user, "utf-8", param="user").lower().encode("utf-16-le")
tmp = md4(md4(secret).digest() + user).digest()
return pbkdf2_hmac("sha1", tmp, user, 10240, 16)
#=============================================================================
# eof
#=============================================================================