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"""passlib.win32 - MS Windows support - DEPRECATED, WILL BE REMOVED IN 1.8 the LMHASH and NTHASH algorithms are used in various windows related contexts, but generally not in a manner compatible with how passlib is structured. in particular, they have no identifying marks, both being 32 bytes of binary data. thus, they can't be easily identified in a context with other hashes, so a CryptHandler hasn't been defined for them. this module provided two functions to aid in any use-cases which exist. .. warning:: these functions should not be used for new code unless an existing system requires them, they are both known broken, and are beyond insecure on their own. .. autofunction:: raw_lmhash .. autofunction:: raw_nthash See also :mod:`passlib.hash.nthash`. """ from warnings import warn warn("the 'passlib.win32' module is deprecated, and will be removed in " "passlib 1.8; please use the 'passlib.hash.nthash' and " "'passlib.hash.lmhash' classes instead.", DeprecationWarning) #============================================================================= # imports #============================================================================= # core from binascii import hexlify # site # pkg from passlib.utils.compat import unicode from passlib.crypto.des import des_encrypt_block from passlib.hash import nthash # local __all__ = [ "nthash", "raw_lmhash", "raw_nthash", ] #============================================================================= # helpers #============================================================================= LM_MAGIC = b"KGS!@#$%" raw_nthash = nthash.raw_nthash def raw_lmhash(secret, encoding="ascii", hex=False): """encode password using des-based LMHASH algorithm; returns string of raw bytes, or unicode hex""" # NOTE: various references say LMHASH uses the OEM codepage of the host # for its encoding. until a clear reference is found, # as well as a path for getting the encoding, # letting this default to "ascii" to prevent incorrect hashes # from being made w/o user explicitly choosing an encoding. if isinstance(secret, unicode): secret = secret.encode(encoding) ns = secret.upper()[:14] + b"\x00" * (14-len(secret)) out = des_encrypt_block(ns[:7], LM_MAGIC) + des_encrypt_block(ns[7:], LM_MAGIC) return hexlify(out).decode("ascii") if hex else out #============================================================================= # eoc #=============================================================================
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