Hi :)
You can always try opening it with MS Office.  

I have opened password protected MS files in LibreOffice without even being 
asked to type in a password.  I have been told the other way around works too.  
Both programs use different systems for password protection.  

Another way might be to copy the file and then rename the file-ending to .zip 
and then you should be able to poke around inside the coding of the file.  I've 
not looked at a Calc file that way so i am not sure whether a text-editor could 
help recover the information from "contents.xml".  Also i am not sure if there 
is a single element that could be deleted to remove the password protection.  

YouTube and other places might well have "How to" crack open password protected 
files so i would google it (or other search engine).  

Most security is more likely to hamper legitimate users than really slow down a 
determined cracker.  Encryption is a classic at being more often responsible 
for losing crucial or private data.  
Regards from
Tom :)  




________________________________
 From: Gabriel Risterucci <[email protected]>
To: "[email protected]" <[email protected]> 
Cc: "[email protected]" <[email protected]> 
Sent: Wednesday, 11 September 2013, 8:56
Subject: Re: [libreoffice-users] the password of Libreoffice
 

Unfortunately, short of having an unprotected backup of your file somewhere
else, there is no workaround for a lost password. If there were, the
protection would be pointless...

I'm afraid that short of a bruteforce you're out of luck.

-- 
Cley Faye
http://cleyfaye.net


2013/9/11 [email protected] <[email protected]>

> Dear All ,
>
> I Forger My password of the Libreoffice file .
> Who can tell me how to deal with it ?
>
> Thanks ... ...
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