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__init__.py	86 B	-rw-r--r--
__init__.pyc	250 B	-rw-r--r--
__init__.pyo	250 B	-rw-r--r--
argon2.py	31.27 KB	-rw-r--r--
argon2.pyc	19.42 KB	-rw-r--r--
argon2.pyo	19.11 KB	-rw-r--r--
bcrypt.py	41.33 KB	-rw-r--r--
bcrypt.pyc	27.11 KB	-rw-r--r--
bcrypt.pyo	26.58 KB	-rw-r--r--
cisco.py	15.9 KB	-rw-r--r--
cisco.pyc	11.1 KB	-rw-r--r--
cisco.pyo	11.01 KB	-rw-r--r--
des_crypt.py	21.74 KB	-rw-r--r--
des_crypt.pyc	17.13 KB	-rw-r--r--
des_crypt.pyo	16.87 KB	-rw-r--r--
digests.py	5.32 KB	-rw-r--r--
digests.pyc	4.93 KB	-rw-r--r--
digests.pyo	4.93 KB	-rw-r--r--
django.py	19.55 KB	-rw-r--r--
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fshp.py	7.62 KB	-rw-r--r--
fshp.pyc	6.42 KB	-rw-r--r--
fshp.pyo	6.33 KB	-rw-r--r--
ldap_digests.py	9.87 KB	-rw-r--r--
ldap_digests.pyc	10.21 KB	-rw-r--r--
ldap_digests.pyo	10.18 KB	-rw-r--r--
md5_crypt.py	13.37 KB	-rw-r--r--
md5_crypt.pyc	8.06 KB	-rw-r--r--
md5_crypt.pyo	7.79 KB	-rw-r--r--
misc.py	9.87 KB	-rw-r--r--
misc.pyc	9.46 KB	-rw-r--r--
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mssql.py	8.28 KB	-rw-r--r--
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mysql.py	4.68 KB	-rw-r--r--
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oracle.py	6.53 KB	-rw-r--r--
oracle.pyc	5.68 KB	-rw-r--r--
oracle.pyo	5.68 KB	-rw-r--r--
pbkdf2.py	18.56 KB	-rw-r--r--
pbkdf2.pyc	15.33 KB	-rw-r--r--
pbkdf2.pyo	15.33 KB	-rw-r--r--
phpass.py	4.67 KB	-rw-r--r--
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postgres.py	2.22 KB	-rw-r--r--
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roundup.py	1.15 KB	-rw-r--r--
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scram.py	22.01 KB	-rw-r--r--
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scrypt.py	13.81 KB	-rw-r--r--
scrypt.pyc	10.2 KB	-rw-r--r--
scrypt.pyo	9.97 KB	-rw-r--r--
sha1_crypt.py	5.69 KB	-rw-r--r--
sha1_crypt.pyc	5.14 KB	-rw-r--r--
sha1_crypt.pyo	5.04 KB	-rw-r--r--
sha2_crypt.py	20.67 KB	-rw-r--r--
sha2_crypt.pyc	12.61 KB	-rw-r--r--
sha2_crypt.pyo	12.18 KB	-rw-r--r--
sun_md5_crypt.py	13.61 KB	-rw-r--r--
sun_md5_crypt.pyc	10.03 KB	-rw-r--r--
sun_md5_crypt.pyo	9.92 KB	-rw-r--r--
windows.py	12.09 KB	-rw-r--r--
windows.pyc	10.19 KB	-rw-r--r--
windows.pyo	10.19 KB	-rw-r--r--

Code Editor : sha1_crypt.py

"""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:
            assert hash.startswith(config) and len(hash) == len(config) + 29
            return hash[-28:]
        else:
            # py3's crypt.crypt() can't handle non-utf8 bytes.
            # fallback to builtin alg, which is always available.
            return self._calc_checksum_builtin(secret)

#---------------------------------------------------------------
    # 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
#=============================================================================

${this.title}

Code Editor : sha1_crypt.py