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venv/Lib/site-packages/passlib/win32.py

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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
+#=============================================================================