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Calc Passwords

 
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rogery1
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PostPosted: Mon Mar 31, 2008 2:22 am    Post subject: Calc Passwords Reply with quote

Is there any way I can retrieve a Calc 2.3.1 document stored as an XLS document for which I have a forgotten password ?

I would appreciate any help.
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Villeroy
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PostPosted: Mon Mar 31, 2008 4:26 am    Post subject: Reply with quote

Calc can simply open password protected Excel documents, disregarding the password. Calc does not produce password protected Excel documents.
If Calc prompts for a password then the file you are trying to load is noExcel document at all.
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rogery1
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PostPosted: Mon Mar 31, 2008 6:32 am    Post subject: Reply with quote

I know this is not an Excel file Villeroy. It was created using OpenOffice 2.3.1 and saved in Excel (xls) format.

Third party password reset programs cannot open it and advise me that it not in Excel format
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Villeroy
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PostPosted: Mon Mar 31, 2008 6:54 am    Post subject: Reply with quote

So it is no Excel document at all, even though the file name might end with .xls.
You can prove if the file is a ODF document (odt, odf, odp,...):
Add a .zip extension to the name and use a zip-tool to open the archive. All ODF documents are zip-archives with XML files.
Typical content of an unzipped odf document. The contained files may be encrypted (password protected) or not:
Code:

Archive:  polycurve.crypt.ods.zip
  Length     Date   Time    Name
 --------    ----   ----    ----
       46  03-31-08 14:35   mimetype
        0  03-31-08 14:35   Configurations2/statusbar/
        0  03-31-08 14:35   Configurations2/accelerator/current.xml
        0  03-31-08 14:35   Configurations2/floater/
        0  03-31-08 14:35   Configurations2/popupmenu/
        0  03-31-08 14:35   Configurations2/progressbar/
        0  03-31-08 14:35   Configurations2/menubar/
        0  03-31-08 14:35   Configurations2/toolbar/
        0  03-31-08 14:35   Configurations2/images/Bitmaps/
     9127  03-31-08 14:35   ObjectReplacements/Object 1
    26812  03-31-08 14:35   content.xml
     7044  03-31-08 14:35   styles.xml
    17437  03-31-08 14:35   Object 1/content.xml
     1100  03-31-08 14:35   Object 1/styles.xml
      487  03-31-08 14:35   Object 1/meta.xml
     1028  03-31-08 14:35   meta.xml
     3842  03-31-08 14:35   Thumbnails/thumbnail.png
    10657  03-31-08 14:35   settings.xml
     2462  03-31-08 14:35   META-INF/manifest.xml
 --------                   -------
    80042                   19 files


Sorry, If you forgot the password for an ODF document, you won't be able to open the file. OOo uses a strong encryption to make the file inaccessible without valid password.
There is a password cracker which assumes that you have some kind of dictionary containing the lost password(e.g. list of al passwords you ever used). The tool tries to open the file with each word from the dictionary file until it succeeds or until it runs out of passwords.
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