Red Hat Topics - losetup problems with hdd encryption

Author

losetup problems with hdd encryption

Stefan Ruester

2005-09-24, 5:47 pm

Hi all,

i have a problem with an encrypted harddisk. I used to encrypt my disk
with losetup and a gpg encrypted file on a usbstick that contains the
password (about 8K). I recently updated my os and after a reboot i
wasn't able to decrypt my partition any more. I ran through the internet
an found, that i originally uses a so called single-key mode to
en/decrypt data. Now with the new version of losetup it forces to use
the multi-key mode when the key is longer than 4K.
I tried nearlly anything to get things back to work but without success.
My Question: is there any possibility to force single-key usage within
losetup? any parameter or workaround? at least anything to get my data back?

kindly regards,

Stefan Ruester

Stefan Ruester

2005-09-25, 5:46 pm

Allright. I got things back to work with the help of dmsetup and
cryptsetup. These tools support single-key-mode.
I hope this hint is usefull for anyone having the same problem.

Thanks...

> i have a problem with an encrypted harddisk. I used to encrypt my disk
> with losetup and a gpg encrypted file on a usbstick that contains the
> password (about 8K). I recently updated my os and after a reboot i
> wasn't able to decrypt my partition any more. I ran through the internet
> an found, that i originally uses a so called single-key mode to
> en/decrypt data. Now with the new version of losetup it forces to use
> the multi-key mode when the key is longer than 4K.