0
votes
0answers
11 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 ...
1
vote
1answer
86 views

LUKS hdd encryption: Maximum maximum password length?

Is there any maximum lenght of the passphrase in the hardrive encryption option on ubuntu (luks)?
0
votes
0answers
76 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 ...
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 ...
0
votes
0answers
34 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
3answers
110 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). ...
1
vote
1answer
54 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
171 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 ...
0
votes
0answers
85 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 ...
2
votes
2answers
683 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
97 views

How to fully encryped ubuntu on the Beaglebone Black

... or at least access LUKS partitions from a unencrypted system. In the past my BBB crashed during file copying on encryted SDHC that actually did mount. In the later versions from ...
0
votes
0answers
18 views

Different behavior of 2 encrypted LVMs

recently i created ext4 on top of luks on top of lvm. about 20gb. i also have similar configuration (900gb) created long time ago - i don't remember how exactly i created it. both are not mounted on ...
0
votes
0answers
105 views

cryptsetup-encrypted disks failing after restart (mb solved?)

I am using cryptsetup/luks (ETA: On 12.04) to encrypt partitions on external hard drives. Several times now, I've had disks fail to mount after an apparently normal restart (often a kernel upgrade, ...
0
votes
0answers
326 views

Unlocking Encrypted Root (LUKS on LVM) with “hidden” USB Keyfile

I have a Ubuntu Server 13.10 machine. Its root partition is encrypted with LUKS, which is then stored in a logical volume. On boot, the LV is mounted and then cryptsetup requests my passphrase; once ...
0
votes
1answer
53 views

How can I hide encrypted volumes from Unity users?

Basically I want to make sure that users cannot mount or attempt to decrypt and mount local volumes. I figured for unencrypted volumes it is sufficient to create a noauto fstab entry that points to a ...
0
votes
0answers
357 views

luksFormart error Failed to setup dm-crypt key mapping for device

I'm trying to format a disk with LUKS and when I try the command cryptsetup luksFormat /dev/loop0 I put the passphrase and then this error message appear: device-mapper: reload ioctl on failed: ...
1
vote
0answers
108 views

LUKS decryption step missing during boot after upgrade

I upgraded my 12.10 installation that was residing on an LUKS encrypted EXT4 root partition. I did that with the 13.10 Iso standard on a DVD. I booted into the Test System, successfully mounted the ...
0
votes
0answers
95 views

cryptsetup passphrase prompt disappears too quickly (LUKS)

My problem is the passphrase prompt at boot (which is set up by cryptsetup) is disappearing too quickly. During boot the passphrase prompt is displayed for about 5 seconds and then the console ...
1
vote
1answer
85 views

/etc/crypttab timout option

I have created an encrypted flash drive named 'LUKSFlash'. I have tested with the following: $ sudo cryptdisks_start LUKSFlash /dev/mapper/LUKSFlash now exists $ sudo cryptdisks_stop ...
0
votes
1answer
421 views

Terrible Luks/dm-crypt performance on 13.10 (Asus Zenbook, SSD, AES-NI supported)

I have a Laptop (Asus Zenbook UX31A) with 124GB SSD. I installed Ubuntu on a encrypted partition and started facing moments of temporary or permanent unresponsiveness. I suspected I/O and did some ...
0
votes
0answers
39 views

Lost encrpytion passphrase for external HD

So I encrypted my external HD using the "LUKS + Ext4" type on ubuntu 13.04, on this computer and on this account, a couple of weeks ago. I know the point of encryption is that you cannot retrieve the ...
0
votes
1answer
373 views

/etc/crypttab ignored on boot

I wanted to setup encryption with dm-crypt and LUKS, but I set it up manually, not during installation process (I created LUKS partition and /etc/crypttab file properly). But the encrypted partition ...
0
votes
1answer
46 views

how to store data on a “secure” place so that nobody can access to it

I am building a "Kiosk-Computer"-Terminal for my client. At the moment the "Kiosk-Mode" is accessing into Ubuntu with the guest-user, this is enough for my costumer at the moment. ( btw. if somebody ...
0
votes
0answers
63 views

luks dev mapper

Can someone tell me why is blkid returning different results from what I can see in /dev/disk/by-uuid ? AM I missing something obvious or is this simply bug ? root@db01:~# blkid /dev/sda1: ...
1
vote
2answers
184 views

Unencrypted /boot partition can be infected from windows on dual-boot system?

I have dual-boot with windows 7 and ubuntu. /dev/sda1 ext4 (/boot) /dev/sda2 ntfs (windows partition) /dev/sda5 ext4 (root encrypted) I don't have any concern of adversaries gaining ...
29
votes
0answers
1k views

How do I enable Ubuntu to suspend the machine using LUKSsuspend during sleep/hibernate

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 ...
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 ...
1
vote
1answer
2k views

Full System encryption with LUKS on headless server - unlock with dropbear and busybox. How?

I encrypted a headless server with cryptsetup/LUKS. 2 HDDs with 512 MB /boot on /dev/md0 and 1,61 TB LUKS encrypted /dev/md1 with LVM containing /, swap, and others. I installed dropbear (and busybox ...
1
vote
0answers
102 views

Owner, xattr on encrypted remote backup

I am trying to configure an encrypted remote backup. My approach is to backup my data to a local drive which is encrypted using ecryptfs (mounted with mount -t ecryptfs /lower_folder /upper_folder) ...
2
votes
1answer
2k views

How do I use dm-crypt (LUKS) with GnuPG to use two-factor for FDE?

When using full disk encryption with Ubuntu (opposed to homedir encryption), dm-crypt with LUKS is used for encrypting the volume. In the installer (at least on 12.04 alternate) you can choose between ...
1
vote
0answers
505 views

Questions about full disk encryption

Completely new user here, I've been reading for a couple of hours about ubuntu's full disk encryption but I just don't understand some basic points. When installing ubuntu's full disk encryption, ...
1
vote
1answer
268 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 ...
1
vote
1answer
4k views

How to encrypt full disk after installing Ubuntu 12.10?

I found that we can encrypt full disk with old version of Ubuntu. I want to do the same with Ubuntu 12.10 but I don't understand the scripts that run when starting with initramfs. So anyone is ever ...
1
vote
1answer
1k views

dm-crypt with LUKS - aes kernel module

Ubuntu documentation says that an aes kernel module needs to be enabled for using aes and dm-crypt with LUKS but when I run modprobe aes as the documentation says to, I get ERROR: could not insert ...
3
votes
1answer
676 views

Clone encrypted HDD to smaller drive

For my work Laptop I use full HDD encryption and I need to upgrade my 500GB HDD to a 250 SSD drive, my HDD has only around 100GB of data and is created via encrypted LVM. GParted does not support ...
3
votes
1answer
679 views

MD + LUKS + LVM will not cleanly shutdown

My setup is currently raid1 + luks on each md partition and lvm on top to stripe between the arrays. There is only one volume group with one logical volume currently. sdc ...
2
votes
1answer
609 views

How do i stop Ubuntu from asking for a password to decrypt my drive on start up?

Ubuntu keeps asking for me to decrypt my drive on start up. This is expected, because I had set up full-disk encryption. How do I stop this now?
4
votes
1answer
3k 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
244 views

My LUKS encrypted device works on one computer but not on another - why?

My LUKS encrypted device works on one computer, the one where I created it on, Ubuntu 12.04. But when I attach it to another fairly fresh 12.04, syslog tells me "unknown partition". Any ideas why ...
8
votes
3answers
11k 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?
0
votes
1answer
445 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 ...
2
votes
0answers
45 views

Encrypted LVM on multiple drives [duplicate]

Possible Duplicate: Full Disk Encryption with LUKS: auto mount second volume I want to set up encrypted LVM when I install Ubuntu. I have an SSD and an HDD and I would like to put /boot, ...
0
votes
1answer
150 views

How to modify partitions after install?

I wanted to have Ubuntu with full disk encryption on one big partition, and Windows on a small one. In 12.04, only the Server Edition installer has full disk encryption, so I used that and then ...
3
votes
0answers
374 views

How to create dm-crypt device in LXC?

On one LXC container I need to put sensitive data, preferrably stored in dm-crypt encrypted filesystem. When I write sudo cryptsetup luksFormat --cipher aes-xts-plain --size 512 ...
1
vote
2answers
3k 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 ...
5
votes
1answer
626 views

why is it a risk to clone a LUKS container?

I recently installed Ubuntu onto an encrypted partition using the LUKS+LVM combination that the 'alternate' installer offers. Now I want to create backups of my HD. From the LUKS FAQ: 6.15 Can I ...
0
votes
2answers
1k views

Failed upgrade from 11.10 to 12.04 on an encrypted filesystem

Okay, so I was running Ubuntu 11.10 with a dm-crypt/LUKS encrypted file-system and just tried to update to 12.04 with the Update Manager. It downloaded all the necessary packages and started ...
2
votes
3answers
906 views

How to enlarge encrypted swap partition?

I have added some RAM to my netbook. I'd like to save an option to hibernate my computer, so I have to increase my SWAP from 2GiB to 4GiB. My /etc/fstab looks like this: ...
1
vote
1answer
2k views

Mount encrypted home during boot (dm-crypt, luks)

I just installed Ubuntu 12.04 on my notebook having kept an old luks encrypted partition on my drive. This partition shows up in the file manager an can be mounted from there into /media/[UUID]. Now I ...
1
vote
2answers
603 views

How to script a mount command involving a dm-crypt / luks volume

I am trying to make a script that will mount an encrypted volume (dm-crypt / luks) with a password that is passed as argument to that script. My trouble is that I can't find a way to make that script ...