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From Klaus Muth <>
Subject Re: Need Help
Date Thu, 06 Mar 2014 14:02:03 GMT
Ok. Tried out. You need:
1. Encrypted OpenDocumentFormat File (i.e. your book)
2. John The Ripper from, I used
3. A Linux System (There is a Windows binary too)

- Now Download john, then untar it:
    tar xvfj john-1.7.9-jumbo-7.tar.bz2
- compile it
    cd john-1.7.9-jumbo-7/src
    make clean linux-x86-64-native
- test it
    cd ../run
    ./john --test
- get password hash:
    ./ MyImportantCrypted.odt > passwd
- crack password hash
    ./john passwd

In my example it took john 17 seconds to realize that my password was
actually 123456 - which is of course the most commonly used password ever and
so one of the first tested options:

 ./john passwd
Loaded 1 password hash (ODF SHA-1 Blowfish [32/64])
123456           (MyImportantCrypted.odt)
guesses: 1  time: 0:00:00:17 DONE (Thu Mar  6 14:43:10 2014)  c/s: 1132
trying: 123456

You might need some kind of Computer Nerd and some fast hardware to crack
your ODF Password, but that might be easy to get compared to writing your
book again.

Using passwords on the only original of a file is generally a bad idea - you
use them to secure a copy you want to send by mail or on a stick.

Am 06.03.2014 13:11, schrieb Vanessa Silva:
> Hello,
> i’ve written a book, took me over 200 hours, saved it with open Office writer and made
a Password for it. Then i didn’t use the document in a while and now i forgot the Password.
Please help me, i Need my book back! Can i send you the document per E-Mail? can you erase
dthe Password? Please, i beg you. I Need it!
> I’ll wait for your answer.
> Vanessa Silva
> Gesendet von Windows Mail

Freundliche Grüße
Klaus Muth
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