[cifs-protocol] RE: 600169 - RE: DCE/RPC PFC_SUPPORT_HEADER_SIGN not optional

Stefan (metze) Metzmacher metze at samba.org
Tue Oct 14 15:00:30 GMT 2008

Hi Richard,

> Thanks for working with us in the lab on this to find the root cause.

Thanks for the great time in the lab!

> The root cause was determined to be a bug in the Samba test code related to header signing when SpNegotiate was used.  Please let us know if there are any further questions regarding this issue.

The only thing that needs to be done is that RFC 4121 gets an update
that documents that the right rotation happens by 'EC + RRC' instead
of just 'RRC'.

As windows seems to be the only implementation that uses EC != 0,
the update should not cause problems to any other existing


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