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List:       cifs-protocol
Subject:    Re: [cifs-protocol] [REG:115021312396540] Wrong Key length in MS-BKRP 3.1.4.1.2.1 Processing a Valid
From:       Edgar Olougouna <edgaro () microsoft ! com>
Date:       2015-02-13 17:14:22
Message-ID: CY1PR0301MB1179D04E0F7C5E8BDF81197FDB230 () CY1PR0301MB1179 ! namprd03 ! prod ! outlook ! com
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Andrew,
I am taking of this as well.

Thanks,
Edgar

-----Original Message-----
From: Vilmos Foltenyi 
Sent: Thursday, February 12, 2015 7:34 PM
To: Andrew Bartlett
Cc: cifs-protocol@lists.samba.org; MSSolve Case Email
Subject: [REG:115021312396540] Wrong Key length in MS-BKRP 3.1.4.1.2.1 Processing a \
Valid ServerWrap Wrapped Secret

[dochelp to Bcc, SR # to Subject]

Hi Andrew,

Thank you for your question. I created case SR 115021312396540 to track this issue \
with the Protocol Documentation support team. Edgar from our team will begin working \
with you.

Regards,
Vilmos Foltenyi - MSFT

-----Original Message-----
From: Andrew Bartlett [mailto:abartlet@samba.org] 
Sent: Thursday, February 12, 2015 15:55
To: Interoperability Documentation Help
Cc: cifs-protocol@lists.samba.org
Subject: Wrong Key length in MS-BKRP 3.1.4.1.2.1 Processing a Valid ServerWrap \
Wrapped Secret

G'Day,

The MS-BKRP protocol docs at "3.1.4.1.2.1 Processing a Valid ServerWrap Wrapped \
Secret" (point 1) and "3.1.4.1.1 BACKUPKEY_BACKUP_GUID" (point 3) clearly state that \
the first 64 bytes of the secret are used for the key.  This is not the case - \
testing by extracting the key from the Windows DC over LSA QuerySecret show that the \
entire key (256 bytes), not the first 64 bytes, is used.

Please correct the docs. 

Thanks,

Andrew Bartlett
--
Andrew Bartlett
http://samba.org/~abartlet/
Authentication Developer, Samba Team  http://samba.org
Samba Developer, Catalyst IT          http://catalyst.net.nz/services/samba





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