Hi, I have old openoffice calc files (.sxc) with password protection. Libreoffice 3.5.1 managed to save those in old format and possible with aes256 encryption (as stated in manifest file). I have tried different technics to solve the problem: * googled around. Have not found a case where corrupted files have been restored, *used different libreoffice and openoffice versions to try to open the file, *tried to decrypt by hand (my skills and time ware out in generating password with PBKDF2 algorithm), *tried to modify manifest file to make it look like a 1.2 ODF version, *tried to replace content.xml in 1.2 ODF file (+ changing content.xml info in manifest file), *I tried with encryption tool named rltodfjlib.jar, *searched for backups. I modified the file 4 months ago during few days, saved once and did not try to open. My frequent backups are stored only for 2 months and older backups are too old, *possible done other things whics I have forgotten as I am pretty frustrated. The information in this file is not recoverable by other means, as original documentation on paper is destroyed by burning.
And now I think I have only one question: is it possible at all to open such file with reasonable amount of time and resources?. At least I learned one good thing: verify that you can open saved file before you close it if the file is important. I guess the best explanation of my problem is in manifest file: ... <!DOCTYPE manifest:manifest PUBLIC "-//OpenOffice.org//DTD Manifest 1.0//EN" "Manifest.dtd"> <manifest:manifest xmlns:manifest="http://openoffice.org/2001/manifest";> <manifest:file-entry manifest:full-path="/" manifest:media-type="application/vnd.sun.xml.calc"/> <manifest:file-entry manifest:full-path="settings.xml" manifest:media-type="text/xml" manifest:size="12002"> <manifest:encryption-data manifest:checksum-type="urn:oasis:names:tc:opendocument:xmlns:manifest:1.0#sha256-1k" manifest:checksum="cSs3LPT3wUPokIbLrEGnZ+iMZmkygRan4fAoBs7RDJ4="> <manifest:algorithm manifest:algorithm-name="http://www.w3.org/2001/04/xmlenc#aes256-cbc"; manifest:initialisation-vector="lqFd27slt5cSIhVYsFvzew=="/> <manifest:key-derivation manifest:key-derivation-name="PBKDF2" manifest:iteration-count="1024" manifest:salt="NxtizE5HXljarju4wXvTrg=="/> </manifest:encryption-data> </manifest:file-entry> ... Thank you for reading my problem! -- View this message in context: http://nabble.documentfoundation.org/Libreoffice-3-5-1-corrupted-eas256-password-protected-ODF-ver-1-0-1-1-files-tp4026356.html Sent from the Users mailing list archive at Nabble.com. -- For unsubscribe instructions e-mail to: users+h...@global.libreoffice.org Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted
