[SOLVED] Using LUKS with a custom kernel on Debian.

273 · 04-08-2013, 04:30 PM

I followed this tutorial to create a new kernel:
http://mapopa.blogspot.co.uk/2009/01/compiling-2.html
All is well until I try to set up a LUKS volume using this tutorial;:
http://balau82.wordpress.com/2011/08...ves-with-luks/
I find that this happens:

Code:

cryptsetup luksFormat /dev/sdh2

WARNING!
========
This will overwrite data on /dev/sdh2 irrevocably.

Are you sure? (Type uppercase yes): YES
Enter LUKS passphrase: 
Verify passphrase: 
device-mapper: reload ioctl on temporary-cryptsetup-21020 failed: Invalid argument
Failed to setup dm-crypt key mapping for device /dev/sdh2.
Check that kernel supports aes-cbc-essiv:sha256 cipher (check syslog for more info).
Failed to write to key storage.

Which means that when I try to format the disk I can't because the password is not stored.

I'm compiling the latest 3.8.6 and I did try to include the encryption modules last time but I am sure I'm missing something. How do I compile with al the crypto stuff?

273 · 04-09-2013, 08:13 AM

I've found that the sha modules aren't being loaded automatically, but if I run:

Code:

morprobe -v sha

THey are then loaded:

Code:

# lsmod |grep sha
sha1_ssse3             16911  0 
sha1_generic           12582  1 sha1_ssse3

But I still find the same problem setting up a luks volume.

273 · 04-29-2013, 08:22 AM

I seem to have solved this but I'm not sure how.
I think I must have missed some SHA options when compiling the kernel -- just compiled one now and made sure to add all the SHA support to the kernel and not as modules (I'll try them as modules later, perhaps) and now all seems fine.