[Bug 37063] NTLM EncryptMessage/DecryptMessage failure

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=37063

--- Comment #3 from dwmw2 at infradead.org <dwmw2 at infradead.org> ---
I've made the DecryptMessage part work in wine by passing a SECBUFFER_TOKEN of
16 bytes and the rest in a SECBUFFER_DATA. And that works for NTLM under
Windows too.

However, even if I generalise that to use sizes.cbMaxSignature instead of a
hard-coded 16, it doesn't work for Kerberos. I receive a 29-byte encrypted
message, pass the first 28 of it in the SECBUFFER_TOKEN and the next in the
SECBUFFER_DATA, and Windows still doesn't like it; I get SEC_E_MESSAGE_ALTERED.

I can't find where SECBUFFER_STREAM is even documented — it isn't mentioned at
http://msdn.microsoft.com/en-us/library/windows/desktop/aa379814%28v=vs.85%29.aspx

Neither can I recall why I'm using it; I have a vague recollection of finding a
mailing list archive somewhere, where the lack of good documentation on this
was lamented and someone authoritative said this was the way to do it... which
does appear to be true, under Windows.

At
http://msdn.microsoft.com/en-us/library/windows/desktop/aa375205%28v=vs.85%29.aspx
another layout (SECBUFFER_DATA, SECBUFFER_EMPTY*3) is used... which doesn't
actually work under Wine *or* Windows.

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