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"l=J*e8q61h h4:6   0: lY>*i?u \ţ a=J*e8pMd bѿ? """passlib.handlers.django- Django password hash support""" #============================================================================= # imports #============================================================================= # core from base64 import b64encode from binascii import hexlify from hashlib import md5, sha1, sha256 import logging; log = logging.getLogger(__name__) # site # pkg from passlib.handlers.bcrypt import _wrapped_bcrypt from passlib.hash import argon2, bcrypt, pbkdf2_sha1, pbkdf2_sha256 from passlib.utils import to_unicode, rng, getrandstr from passlib.utils.binary import BASE64_CHARS from passlib.utils.compat import str_to_uascii, uascii_to_str, unicode, u from passlib.crypto.digest import pbkdf2_hmac import passlib.utils.handlers as uh # local __all__ = [ "django_salted_sha1", "django_salted_md5", "django_bcrypt", "django_pbkdf2_sha1", "django_pbkdf2_sha256", "django_argon2", "django_des_crypt", "django_disabled", ] #============================================================================= # lazy imports & constants #============================================================================= # imported by django_des_crypt._calc_checksum() des_crypt = None def _import_des_crypt(): global des_crypt if des_crypt is None: from passlib.hash import des_crypt return des_crypt # django 1.4's salt charset SALT_CHARS = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789' #============================================================================= # salted hashes #============================================================================= class DjangoSaltedHash(uh.HasSalt, uh.GenericHandler): """base class providing common code for django hashes""" # name, ident, checksum_size must be set by subclass. # ident must include "$" suffix. setting_kwds = ("salt", "salt_size") # NOTE: django 1.0-1.3 would accept empty salt strings. # django 1.4 won't, but this appears to be regression # (https://code.djangoproject.com/ticket/18144) # so presumably it will be fixed in a later release. default_salt_size = 12 max_salt_size = None salt_chars = SALT_CHARS checksum_chars = uh.LOWER_HEX_CHARS @classmethod def from_string(cls, hash): salt, chk = uh.parse_mc2(hash, cls.ident, handler=cls) return cls(salt=salt, checksum=chk) def to_string(self): return uh.render_mc2(self.ident, self.salt, self.checksum) # NOTE: only used by PBKDF2 class DjangoVariableHash(uh.HasRounds, DjangoSaltedHash): """base class providing common code for django hashes w/ variable rounds""" setting_kwds = DjangoSaltedHash.setting_kwds + ("rounds",) min_rounds = 1 @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): return uh.render_mc3(self.ident, self.rounds, self.salt, self.checksum) class django_salted_sha1(DjangoSaltedHash): """This class implements Django's Salted SHA1 hash, and follows the :ref:`password-hash-api`. It supports a variable-length salt, and uses a single round of SHA1. The :meth:`~passlib.ifc.PasswordHash.hash` and :meth:`~passlib.ifc.PasswordHash.genconfig` methods accept the following optional keywords: :type salt: str :param salt: Optional salt string. If not specified, a 12 character one