[cifs-protocol] data checksum value in FRS

[Matthieu Patou]

Hello Dochelp,

Paragraph 2.2.3.7DATA_EXTENSION_CHECKSUM of MS-FRS1 indiciate about the 
data checksum:

Data: MUST be a 128-bit MD5 digest of staging file and attributes, as 
specified in [RFC1321].
See section 2.2.3.10 for how the MD5 digest is constructed on a staging 
file and attributes.

Section 2.2.3.10 didn't bring much more information, but it seems while 
looking at a replication (initial + regular) between 2 DCs that the 
checksum attribute is sometime omitted (it's 16 null bytes).

Like in packet 3286 in the attached trace.

At the opposite in packet 5300 we have a non null checksum, can you 
explain in which case the checksum can or must be null ?

The trace is attached to this email.

Thanks.

Matthieu.


-- 
Matthieu Patou
Samba Team
http://samba.org

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