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�Zdejejejfd��YZ d	ejejejfd��YZ!dS(s�passlib.handlers.mssql - MS-SQL Password Hash

Notes
=====
MS-SQL has used a number of hash algs over the years,
most of which were exposed through the undocumented
'pwdencrypt' and 'pwdcompare' sql functions.

Known formats
-------------
6.5
    snefru hash, ascii encoded password
    no examples found

7.0
    snefru hash, unicode (what encoding?)
    saw ref that these blobs were 16 bytes in size
    no examples found

2000
    byte string using displayed as 0x hex, using 0x0100 prefix.
    contains hashes of password and upper-case password.

2007
    same as 2000, but without the upper-case hash.

refs
----------
https://blogs.msdn.com/b/lcris/archive/2007/04/30/sql-server-2005-about-login-password-hashes.aspx?Redirected=true
http://us.generation-nt.com/securing-passwords-hash-help-35429432.html
http://forum.md5decrypter.co.uk/topic230-mysql-and-mssql-get-password-hashes.aspx
http://www.theregister.co.uk/2002/07/08/cracking_ms_sql_server_passwords/
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s*This class implements the password hash used by MS-SQL 2005, and follows the :ref:`password-hash-api`.

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