All questions relating to LUKS (the disk-encryption specification) for Linux

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0
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3answers
98 views

clean install boot fails … ended up in BusyBox (initramfs) … a case for e2fsck

The computer gave me some strange errors like 'device not found' always while booting into Ubuntu, so tried to figure it out and used only the tips from this site to get a fast and secure virtual ...
0
votes
1answer
116 views

How to reinstall kernels after accidental deletion with a separate boot partition and an encrypted LVM volume?

My installation is a Ubuntu 12.04 64 bits (Classic "legacy" MBR - No EFI/UEFI here) with two partition : A separate boot partition An encrypted LUKS volume that contains the system Logical Volumes ...
0
votes
0answers
16 views

Recovering GPT w/ encrypted partition

I have a removable HDD whose partition table became corrupted during an interrupted file transfer. The device should contain a GPT with a single ext4 partition encrypted by dm-crypt/LUKS. lsblk: ...
17
votes
1answer
14k views

How can I install Ubuntu encrypted with LUKS with dual-boot?

Ubuntu 13.04 installation disk has an option to install Ubuntu encrypted using LUKS. However, there is no option to perform an encrypted installation along-side existing partitions for a dual-boot ...
2
votes
0answers
39 views

Recover Data from Encrypted LUKS HDD

Hei, I really need help with this! Yesterday my Kubutnu wouldnt boot anymore so I booted with a Live CD and could fix the problem with this Tutorial: ...
5
votes
2answers
4k views

Slow SSD + dm-crypt with Luks encryption in Ubuntu 12.10

I have an 128 GB SSD installed in my laptop (Samsung 840 Pro) on a Sata 3 interface. This laptop also has an i5 3210m Ivy Bridge Intel processor and 8 GB of RAM. I installed Ubuntu 12.10, using the ...
0
votes
1answer
637 views

Encrypting FAT32 with Luks

In previous versions of Ubuntu I was able to encrypt USB flashdrives using the disks tool in any format I pleased. Now unfortunately I am only able to encrypt a flash drive in EXT format. This is ...
0
votes
1answer
52 views

Can Luks Be Used To Encrypt an NTFS Partition in Ubuntu?

(And then Boot into Full Windows With Luks Running Silently In the Background) I have a client that is completely unable to use Linux, but I was thinking maybe there was a way to setup their computer ...
2
votes
3answers
1k views

Cannot mount LUKS encrypted USB on boot after 12.10 upgrade

I use a USB disk to backup my Ubuntu machine and store the video files I work with. It is formated to ext4 and uses LUKS encription. When I was using 12.04 it was working flawlessly and would mount ...
0
votes
0answers
34 views

Encryption selected while installing Ubuntu but hard drive isn't encrypted

I have selected "encrypt new Ubuntu installation" on the Ubuntu 14.04 installer and typed in a passphrase setup. But after the installation was done my hard drive isn't encrypted. There is no ...
47
votes
0answers
2k views

How do I enable Ubuntu (using full disk encryption) to call LUKSsupend before sleeping/suspending to RAM?

This question is related to another one by @Stefan, but it is not a duplicate of it. The questions are slightly different: the author simply wanted to know if this had been implemented, while I'm ...
1
vote
0answers
38 views

After selecting Grub entry, screen switches to power save

After I select an entry (Ubuntu) from the Grub menu, the screen goes to power save mode. I could eventually get the screen asking me for the HDD encryption password by pressing Alt-F1 and then Alt-F7 ...
0
votes
0answers
27 views

Split encrypted Ubuntu installation into multiple encrypted partitions

I run a standard Ubuntu installation with LVM-Luks-based encryption which was set up by the installer. Now I would like to split this installation up since I want to use my home with another Ubuntu ...
3
votes
4answers
4k views

Mount LUKS encrypted hard drive at boot

I have Xubuntu 14.04 on a SSD device (the HOME was encrypted correctly during intallation), additionally I have a HDD with a encrypted partition with extra data which I would like to mount in ...
0
votes
0answers
45 views

install with full disk encryption and a larger swap size

I have a laptop with 8GB RAM. When I install xubuntu and choose full disk encryption during the installer, it automatically creates an 8GB swap. I want to hibernate the computer, and if the RAM is ...
2
votes
0answers
147 views

How to restore a LUKS partition?

My /home partition disappeared on my main HDD. I changed SATA slots, then I got strange "no lvm available" errors during boot when usually the password would be entered (I do not have any lvm setup at ...
0
votes
0answers
230 views

How to recover encrypted LUKS lubuntu data?

I installed lubuntu 13.10 with encryption from the CD and then updated to 14.04 when it became available. Now booting up fails. My hard drive has at least two partitions, one boot and one LUKS ...
1
vote
2answers
4k views

How do I get Grub2 to boot a Truecrypt-encrypted MBR?

Given the following system: /dev/sda1 Windows, encrypted using TrueCrypt /dev/sda2 /boot /dev/sda3 /, encrypted (LUKS or how it is called) I now need GRUB2 to boot my truecrypt mbr ): Any hint on ...
0
votes
0answers
212 views

Password to unlock LUKS volume requested multiple times even after correct password is given

Please help! There is win7 on separate logical volume. Then installed Ubuntu on a encrypted LVM (it is contains of two encrypted PV's). Everything's fine, but LUKS password asked for 5-8 times when ...
0
votes
1answer
272 views

How do you restore an encrypted hard drive? Password being available

Installed by Ubuntu 14.04 LTS Installer: I have installed Ubuntu 14.04 LTS Desktop onto my notebook PC, and I made a wrong decision to alter the file ownership and permissions from the root drive as ...
0
votes
1answer
23 views

“Corrupted shell” after cryptdisks_start

I've been using luks encryption for USB backup drives for years with no problems, but now I have some strange behaviour. The difference is that here the whole system (except /boot) is on LVM over luks ...
0
votes
1answer
240 views

Is LUKS key wiped out from RAM on shutdown, hibernation and suspend?

The question is basically whether Ubuntu is protected from cold boot attacks.
0
votes
0answers
79 views

Auto mount encrypted FS with grub2

I have been looking for a way to mount my encrypted partitions automatically during boot up, without asking for password. my setup for this process.. USB key: /boot partition /boot/efi partition ...
0
votes
3answers
236 views

No Swap Partition!

I'm in dire need of help. My system has become incredibly laggy and hardly usable. I have realised that this is because for some reason I'm running without virtual memory (this is not intentional). ...
0
votes
0answers
130 views

Luks encrypt / with a key stored in /boot

First, I know it sounds a little weird to do this (putting a key in plaintext on a drive), but here's why I want to do it this way: If I ever want to give the computer/drive to someone else, I want to ...
3
votes
0answers
3k views

device-mapper: remove ioctl on luks-xxxx failed: Device or resource busy

While I was away from my computer, my encrypted USB drive got accidentally unmounted somehow (although it was still physically connected at the time). I haven't been able to recover (haven't tried a ...
1
vote
0answers
38 views

I broke my luks disk by adding a key with the same passphrase and then removing it

This is a fun story. I wanted to change my passphrase, but I did something incredibly stupid (It was rather late and I had a pretty f***** up day/evening full of waterspouts, drunken drivers and a ...
11
votes
3answers
3k views

Is AES-NI fully supported?

Has support for the Intel AES-NI hardware crypto acceleration been added to Ubuntu (LUKS, kernel, OpenSSL libs, etc)? If so, starting with which version? Here is a list of Intel processors supporting ...
0
votes
0answers
257 views

Possible to make “Forget password immediately” the default when opening LUKS encrypted partition?

When a LUKS encrypted partition pops up the unlock window it gives 3 options for how to remember the password. The "Remember password until you logout" is always ticked by default. Is there a way to ...
0
votes
1answer
127 views

How to change permissions on luks-dmcrypt encrypted device?

I encrypted a device using these directions sudo dd if=/dev/urandom of=/dev/sdb1 sudo cryptsetup -y -v luksFormat /dev/sdb1 sudo cryptsetup luksOpen /dev/sdb1 $name #change "$name" to any name you ...
0
votes
1answer
331 views

Can I “cryptsetup … luksFormat” a partition formatted with Ext4, or must it be unformatted?

I would like to setup Full Disk Encryption (FDE) for an external harddrive. My question is about the sequence of formatting. Will the following sequence work fine or do I need to run luksFormat on an ...
2
votes
5answers
2k views

encrypted 13.10 will not reliably boot

EDIT: SOLVED! see http://askubuntu.com/a/403876/212688 i re-installed ubuntu 13.10 x64 on my vaio pro, in legacy, bios mode. the installation is lvm/luks encrypted and thus asks me for the encryption ...
1
vote
1answer
291 views

How to update cryptsetup till version 1.6.1?

Hello current version of cryptsetup is not capable working with truecrypt partitions. Versions after 1.5.x are capable.(http://code.google.com/p/cryptsetup/wiki/Cryptsetup160) So here is the latest ...
0
votes
2answers
2k views

mounting logical volume from .img containing a luks encrypted volume group

I'm having some trouble restoring a back-up I made of a encrypted filesystem. The back-up is a .img file containing a single disc partition. This partition is a luks container in which a logical ...
10
votes
2answers
942 views

Suspend to RAM and encrypted partitions

Normally I don't shutdown my notebook any more in favour of using suspend-to-RAM. The downside is that my encrypted home partition is completely accessible after resume without entering the ...
1
vote
1answer
297 views

LUKS hdd encryption: Maximum maximum password length?

Is there any maximum lenght of the passphrase in the hardrive encryption option on ubuntu (luks)?
-1
votes
1answer
149 views

Luks Disk Encryption

I have setup disk encryption with 'LUKS' and configure it to auto mount when the system boots up. So now as it supposed, it prompts me a passphrase when the system boots up. If i enter the correct ...
2
votes
0answers
125 views

Add second disk to encrypted laptop [duplicate]

I have installed cleanly 14.04 AMD64 onto my laptop which has two (SSD) disks. I used the default install with full disk encryption option on the first disk. However I'd now like to add a second disk ...
10
votes
3answers
18k views

Can I disable full-disk encryption?

I recently installed Ubuntu 12.10 and it requires a passphrase to boot up (I installed it with an encrypted file system). Do I have to reinstall to change to a standard unencrypted file system?
7
votes
3answers
13k views

How secure is an encrypted LUKS filesystem?

I recently installed 11.10 on a fresh disk using entire disk encryption. Can someone tell me how secure the encryption algorithm is? Has there been any recent breaches with said algorithm? I use a ...
0
votes
0answers
59 views

Unable to log in after full disk encryption + separate Encfs encryption of home directory

I followed this (german) guide to set up an encrypted ubuntu system. However I wanted to have my home directory on a separate disk and also encrypted, but using encfs. So I chose a partition on ...
0
votes
0answers
51 views

How to mount encrypted home directory in an encrypted LVM with username/password

I mounted the LVM to ~/recover The private home folder is now here ~/recover/home/eshwar$Access-Your-Private-Data.desktop I tried ecryptfs-recover-private but it appears that the login passphrase is ...
0
votes
1answer
105 views

Creating a swap partition on an SSD with full encryption

Much to my surprise I recently found myself to lack a swap partition. Since (as is evident from the output of df, which I hereby repost) that I am running off a single encrypted volume, I was ...
1
vote
1answer
248 views

Dual boot w/ UEFI and LUKS - What do I need to know/do?

I want to rebuild my mobile workstation (HP EliteBook 8560w) to dual boot CentOS 6.5 and Ubuntu 14.01LTS. I would like to protect both instances with LUKS. In my research I have come across a few ...
2
votes
1answer
207 views

Expanding an encrypted xfs volume

I am working on expanding a currently attached volume to one of my Ubuntu Amazon AWS servers, but I am having some problems. I already created a new volume from a snapshot, then attached the newly ...
1
vote
1answer
72 views

Encryption of hard disk [closed]

Is it possible to encrypt the hard disk without formatting in ubuntu. if yes so,please tell me with full description.
0
votes
0answers
319 views

how to decrypt a LUKS partition?

i checked the LUKS encryption while installing ubuntu 14.4. now i cant access windows partition. how can i decrypt that? i tried cryptsetup luksRemoveKey it just removed the key itself. is it even ...
0
votes
0answers
390 views

How to make luks partition auto-mounted at start-up?

What I have: 1st HDD (/dev/sda) with luks crypt partition (/dev/sda5) with LVM in it (/dev/mapper/sda5_crypt). LVM contains system root (/dev/mapper/TS1--vg-root) and swap ...
1
vote
0answers
142 views

Open multiple LUKS partitions at boot

I have a setup where I have 4 LUKS partitions that need to be mounted at boot time in order to assemble a RAID10 btrfs partition holding the root partition of my system. I was able to finalize the ...
5
votes
4answers
4k views

How to check if TRIM is working for an encrypted volume?

You can easily check if TRIM works for a "normal" ext4 partition: http://askubuntu.com/a/19480/5920. How to do that for a LUKS-encrypted one? Let's assume the default LUKS setup made by 12.04 ...