Jonathan Wilson wrote:
Thanks to Pali finding some old osso-backup source in
http://repository.maemo.org/pool/maemo3.2/free/source/, I was able to build
a tool that decrypts encrypted osso-backup files without the need to have a
working N900 Fremantle install.
The download is at http://www.cncmods.net/files/backupdec.zip and is
compiled via backupdec.sh. It will compile in scratchbox if you have
libosso-gsf-1-dev, libglib-2.0-dev and libssl-dev installed or it should
compile in a normal linux environment if you have normal libgsf, glib and
openssl headers installed (you will need to edit the sh file pkg-config
options for this)
To run the compiled binary, run backupdec in out password where in is the
encrypted zip file from the backup, out is the name of the output
unencrypted zip file and password is the password used when the zip file
was created.
It can also be used to decrypt zip files on the N900 itself if you want to
decrypt the files without actually restoring the backup. (i.e. build an arm
binary of this and run it on the phone)
If someone has a specific need for a binary of this built for a specific
platform, let me know and I will see what I can do to get a binary.
The source code here is released under the GPL if you want to re-use it.
Also, this only works if you know the actual password as the encryption is
too strong to brute force it.
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