FreeTDS Development Group

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Patches item #2031829, was opened at 2008-07-29 22:02
Message generated for change (Comment added) made by freddy77
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Category: TDS protocol
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Sergey Sikorsky (merfy)
Assigned to: Brian Bruns (brianb)
Summary: Implementation of NTLMv2 authentication protocol

Initial Comment:
This patch adds implementation of Microsoft NTLMv2 authentication protocol to 
FreeTDS v. 0.82. This code was originally developed for FreeTDS v. 0.64 and 
back-ported to v.82. The code was published under "PUBLIC DOMAIN" license 
since fall 2005. The only exception is the implementation of the hmac_md5 
algorithm, which was borrowed from SAMBA and should be redistributed under 
GNU GPL license. That shouldn't be a big problem because implementation of 
hmac_md5 is quite trivial and can be easily replaced.


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>Comment By: Frediano Ziglio (freddy77)
Date: 2008-07-30 16:54

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Applied at
http://freetds.cvs.sourceforge.net/freetds/freetds/src/tds/challenge.c?r1=1.30&r2=1.31&sortby=date.
Although I don't consider it experimental (it works) there are still some
TODO/FIXME to consider. Is this version backward compatible? How to select
NTLMv2 instead of NTLMv1? Currently it mostly use NTLMv2 but don't seem so
correct.

freddy77


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Comment By: Frediano Ziglio (freddy77)
Date: 2008-07-30 10:12

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See
http://freetds.cvs.sourceforge.net/freetds/freetds/include/hmac_md5.h?view=markup
and
http://freetds.cvs.sourceforge.net/freetds/freetds/src/tds/hmac_md5.c?view=markup
for HMAC replacement, code translated from
http://davenport.sourceforge.net/ntlm.html (Java version).

freddy77


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