Nuno J. Silva wrote:
> 
> It's still a weird way to describe it. Encryption itself has a
> key/password. So this means the document has *two* passwords? One for
> non-encrypted password "protection" (it's as much real protection as
> ROT26), and other for the encryption?
> 
Password prompt shows only once in Excel. How does it looks deeper - I don't
know.


Nuno J. Silva wrote:
> 
> So it also affects docx? I'd suggest updating the bug report summary to
> reflect that :-)
> 
> If you can make an example document, attach it to the report. I guess
> the only way to create one is using Microsoft Office itself?
> 
I made some tests with protecting MSO files. There is (AFAIK) two ways to
encrypt files in Excel/Word 07 :
1.  MS Button -> Prepare -> Encrypt Document
2. Save as -> Tools -> General options -> Password to open --> Save
In both, when I created a test file on my own, always it could be opened by
Libo. 
So, the issue is caused by another thing in MSO. In addition, SP2 for Office
changed something in encryption. I had already deal with this.

Another thing I spotted is difference in the EncryptionInfo file contained
in xlsx pack. 

I also attached files to bug report. 
Hope this help. 

Krzysztof



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