i’m facing some key breakings in special cases when i upload files through a third party app on iOS to an OwnCloud user.
It looks like that sometimes, especially when i‘m Uploading files from iPhone (6s IOS 11.1.4) with the 3rd party app „iFiles 2“ and the OC user comes close to his storage limit (around 90% storage used), that the encryption keys of the Server-side-encryption are breaking. I‘m be able to open the files in the iFiles2 app (I guess through caching), but not on the browser. The sync to my Windows PC with the OC client works perfectly in the same moment of the upload. That’s why I was not hit by a complete data lost through this problem.
I was using this 3rd party app because I had the oAuth2 problems with the original OC app. Now I will go back to the original OC app.
As alert message I received, that the encryption keys are not matching with the users public/private key.
The problem also hits all new uploaded files a few hours after upload to the user directory.
The iOS App tells me, when i want to open a “broken”-file that i don’t have the permission to complete the operation.
The only solution I know at the moment is to create a new user and to upload the files via the Windows OC client again or if several users of the same OC instance are hit by the problem, then I rebuilt the OC instance completely. A complicated way was to restore the file encryption keys from a backup. This solved the problem as well but it’s quite complicated and needs a lot of time.
Maybe someone of you ownclouders has an idea how to solve it easier or how to avoid these problems.
I’m using OC 10.0.8 on a shared hosted Webspace.
The problem also occurred on earlier OC 10 versions.
Thanks and best regards,