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"""passlib.handlers.mysql MySQL 3.2.3 / OLD_PASSWORD() This implements Mysql's OLD_PASSWORD algorithm, introduced in version 3.2.3, deprecated in version 4.1. See :mod:`passlib.handlers.mysql_41` for the new algorithm was put in place in version 4.1 This algorithm is known to be very insecure, and should only be used to verify existing password hashes. http://djangosnippets.org/snippets/1508/ MySQL 4.1.1 / NEW PASSWORD This implements Mysql new PASSWORD algorithm, introduced in version 4.1. This function is unsalted, and therefore not very secure against rainbow attacks. It should only be used when dealing with mysql passwords, for all other purposes, you should use a salted hash function. Description taken from http://dev.mysql.com/doc/refman/6.0/en/password-hashing.html """ #============================================================================= # imports #============================================================================= # core from hashlib import sha1 import re import logging; log = logging.getLogger(__name__) from warnings import warn # site # pkg from passlib.utils import to_native_str from passlib.utils.compat import bascii_to_str, unicode, u, \ byte_elem_value, str_to_uascii import passlib.utils.handlers as uh # local __all__ = [ 'mysql323', 'mysq41', ] #============================================================================= # backend #============================================================================= class mysql323(uh.StaticHandler): """This class implements the MySQL 3.2.3 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. """ #=================================================================== # class attrs #=================================================================== name = "mysql323" checksum_size = 16 checksum_chars = uh.HEX_CHARS #=================================================================== # methods #=================================================================== @classmethod def _norm_hash(cls, hash): return hash.lower() def _calc_checksum(self, secret): # FIXME: no idea if mysql has a policy about handling unicode passwords if isinstance(secret, unicode): secret = secret.encode("utf-8") MASK_32 = 0xffffffff MASK_31 = 0x7fffffff WHITE = b' \t' nr1 = 0x50305735 nr2 = 0x12345671 add = 7 for c in secret: if c in WHITE: continue tmp = byte_elem_value(c) nr1 ^= ((((nr1 & 63)+add)*tmp) + (nr1 << 8)) & MASK_32 nr2 = (nr2+((nr2 << 8) ^ nr1)) & MASK_32 add = (add+tmp) & MASK_32 return u("%08x%08x") % (nr1 & MASK_31, nr2 & MASK_31) #=================================================================== # eoc #=================================================================== #============================================================================= # handler #============================================================================= class mysql41(uh.StaticHandler): """This class implements the MySQL 4.1 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. """ #=================================================================== # class attrs #=================================================================== name = "mysql41" _hash_prefix = u("*") checksum_chars = uh.HEX_CHARS checksum_size = 40 #=================================================================== # methods #=================================================================== @classmethod def _norm_hash(cls, hash): return hash.upper() def _calc_checksum(self, secret): # FIXME: no idea if mysql has a policy about handling unicode passwords if isinstance(secret, unicode): secret = secret.encode("utf-8") return str_to_uascii(sha1(sha1(secret).digest()).hexdigest()).upper() #=================================================================== # eoc #=================================================================== #============================================================================= # eof #=============================================================================
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