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