[cifs-protocol] [Pfif] MS-NRPC: AES Schannel problems

Stefan (metze) Metzmacher metze at samba.org
Thu Sep 17 14:29:12 MDT 2009


Hongwei,

>    We just found that there is a problem with the logic in step 9 of 3.3.4.2.1 (Generating an Initial Netlogon Signature Token) and step 5 of 3.3.4.2.2 (Receiving an Initial Netlogon Signature Token). When we  encrypt or decrypt SequenceNumber,  the IV is actually the concatenation of checksum, instead of SequenceNumber itself.    I will file a request to update the document. 
> 
>    You can change your function netsec_do_seq_num() to use checksum to construct IV.

Thanks very much, I got it working!

metze

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