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Re: Passwords with Lan Manager (LM) under Windows

Subject: Re: Passwords with Lan Manager (LM) under Windows
Date: Tue, 20 Sep 2005 11:55:26 -0600
The hash is not case sensitive, everything is pushed to uppercase. 
As for the 142 Chars I know it supports 0-9,A-Z,special chars, and
some Alt-ASCII characters but I don't know to what extent.


On 9/20/05, Cedric.Baechler@vtg.admin.ch <Cedric.Baechler@vtg.admin.ch> wrote:
Hi,

Lan Manager (LM) is one of the oldest authentication protocols that Microsoft 
has used. It was first introduced with Windows 3.11 and is not very secureThe 
hash is case-insensitive.

* The character set is limited to 142 characters.
* The hash is broken down into 2-7 character chunks. If the password is 
shorter than 14 characters, the password will be padded with nulls to get the 
password to 14 characters.
* The hash result is a 128-bit value.
* The hash is one-way function.


Does anyone know which 142-character set is used?

Thanks in advance,

Cedric

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