[Owncloud] Encryption no longer working

[niazy at niazyselim.net]

Robin
YOU ARE THE BEST!!!!!!!
You were absolutely correct. Once I ran you script, I was able to  
access all the encrypted files. Thank you, Thank you, Thank you!!!!!!
Niazy

Quoting Robin Appelman <icewind at owncloud.com>:

> On Wednesday 08 August 2012 07:32:33 niazy at niazyselim.net wrote:
>> Hello All,
>>
>> I am in the same dilemma as Andreas. I had all my files and my wifes
>> files (separate accounts) encrypted in owncloud. Things were working
>> well. The server was acting up so I decided to reinstall to a fresh
>> Ubunut 12.04LTS. I had my owncloud/data/ on a separate partition on a
>> RAID5 disk.
>> After resinstall, out of paranoia and to be safe, I copied the data
>> first to owncloud/data/ using regular cp command.
>> Our passwords are the same. My files are encrypted and I cannot
>> decrypted them any more. The encryption.key file is the the original
>> one. I wrote a php routine to decrypt the can decrypt the
>> encryption.key and I was able to retrieve its salt. For an expirement,
>> I encrypted a text file using owncloud and I still cannot decrypt the
>> text back. It decrypts in owncloud browser but not using a php
>> blowfish routines. I emailed Frank Karlitschek and he was nice enough
>> to respond. He said that the salt in the config.conf is used to
>> encrypt the password. I looked in the routines and found out that the
>> salt is generated in a random fassion. Then we are screwed. I cannot
>> believe we encrypt people's data against a random salt and without any
>> warning to tell people to copy the salt in a safe place just in
>> case????????????
>>
>> Anyhelp will be greatly appreciated.
>> Niazy
>
> Nothing in config.php is used for encryption, I think the problem is  
>  that with
> the old database gone, owncloud no longer knows what files were encrypted.
>
> I made the attacted script which will set the encryption flag for   
> all files that
> would be encrypted using the current settings.
> Place the script in your owncloud folder and run it from a browser.
>
> Using this script might mess up your installation and any files   
> uploaded before
> encryption was enabled in the original installation will be unreadable untill
> the values in the database are corrected
>
>  - Robin Appelman