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116 lines
4.7 KiB
C
116 lines
4.7 KiB
C
#ifndef AUTH_LMHASH_H
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#define AUTH_LMHASH_H
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/* ========================================================================== **
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*
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* LMhash.h
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*
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* Copyright:
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* Copyright (C) 2004 by Christopher R. Hertel
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*
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* Email: crh@ubiqx.mn.org
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*
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* $Id: LMhash.h,v 0.1 2004/05/30 02:26:31 crh Exp $
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*
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* -------------------------------------------------------------------------- **
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*
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* Description:
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*
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* Implemention of the LAN Manager hash (LM hash) and LM response
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* algorithms.
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*
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* -------------------------------------------------------------------------- **
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*
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* License:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* -------------------------------------------------------------------------- **
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*
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* Notes:
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*
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* This module implements the LM hash. The NT hash is simply the MD4() of
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* the password, so we don't need a separate implementation of that. This
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* module also implements the LM response, which can be combined with the
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* NT hash to produce the NTLM response.
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*
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* This implementation was created based on the description in my own book.
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* The book description was, in turn, written after studying many existing
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* examples in various documentation. Jeremy Allison and Andrew Tridgell
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* deserve lots of credit for having figured out the secrets of Lan Manager
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* authentication many years ago.
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*
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* See:
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* Implementing CIFS - the Common Internet File System
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* by your truly. ISBN 0-13-047116-X, Prentice Hall PTR., August 2003
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* Section 15.3, in particular.
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* (Online at: http://ubiqx.org/cifs/SMB.html#SMB.8.3)
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*
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* ========================================================================== **
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*/
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/* -------------------------------------------------------------------------- **
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* Functions:
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*/
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uchar *auth_LMhash( uchar *dst, const uchar *pwd, const int pwdlen );
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/* ------------------------------------------------------------------------ **
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* Generate an LM Hash from the input password.
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*
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* Input: dst - Pointer to a location to which to write the LM Hash.
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* Requires 16 bytes minimum.
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* pwd - Source password. Should be in OEM charset (extended
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* ASCII) format in all upper-case, but this
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* implementation doesn't really care. See the notes
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* below.
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* pwdlen - Length, in bytes, of the password. Normally, this
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* will be strlen( pwd ).
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*
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* Output: Pointer to the resulting LM hash (same as <dst>).
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*
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* Notes: This function does not convert the input password to upper
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* case. The upper-case conversion should be done before the
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* password gets this far. DOS codepage handling and such
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* should be taken into consideration. Rather than attempt to
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* work out all those details here, the function assumes that
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* the password is in the correct form before it reaches this
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* point.
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*
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* ------------------------------------------------------------------------ **
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*/
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uchar *auth_LMresponse( uchar *dst, const uchar *hash, const uchar *challenge );
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/* ------------------------------------------------------------------------ **
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* Generate the LM (or NTLM) response from the password hash and challenge.
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*
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* Input: dst - Pointer to memory into which to write the response.
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* Must have 24 bytes available.
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* hash - Pointer to the 16-byte password hash.
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* challenge - Pointer to the 8-byte challenge.
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*
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* Output: A pointer to the 24-byte response (same as <dst>).
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*
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* Notes: The function does not check the lengths of the input or output
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* parameters. The byte sizes given above must be respected by
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* calling function.
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*
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* ------------------------------------------------------------------------ **
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*/
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/* ========================================================================== */
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#endif /* AUTH_LMHASH_H */
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