LUKS (Linux Unified Key Setup) is a disk-encryption specification.

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How to configure device mapper name of encrypted root partition with Grub2?

I would like to have my encrypted root partition mapped to the device mapper name system, i.e. it should eventually appear under /dev/mapper/system. My operating system is Fedora 24 Workstation Linux ...
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19 views

Restore unencrypted LVM2 logical volumes to LVM on LUKS setup?

I have an unencrypted Ubuntu 16.04 setup using LVM2. I'd like to 'port' this into an encrypted setup on the same computer and disk, which would save me the hassle of reinstalling all the apps and ...
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How to create a LUKS encrypted file in a vboxsf mountpoint?

I am trying to create a LUKS encrypted file in a VirtualBox image. It works fine unless the encrypted file resides in a VirtualBox shared folder. The error output is: 10+0 records in 10+0 records ...
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How to add LUKS Nuke to Fedora cryptsetup? [on hold]

I wanted to add a patch to the cryptsetup package on Fedora, so that I could use the LUKS nuke. I've tried many different options to try and rebuild the package, but I cannot figure out what to do to ...
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How to reboot a server with a LUKS encrypted partition

I have a CentOS 6 VM on which I used the following shell script for installing and configuring MongoDB to use a secondary LUKS (dm-crypt) encrypted disk for its database files: #!/bin/bash -e # Set ...
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LUKS: Change master key

I've already read this SE question, but it's somewhat old now. How can I reencrypt a LUKS partition using a different master key? I have a cloned VM image that needs to go into production, but it's ...
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LUKS: 1 master key but multiple passwords and key files?

After reading "man cryptsetup" and many StackExchange questions, I'm confused: Does LUKS use the same master key in each slot? If I execute the commands below, the displayed master key does not ...
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LUKS decryption at boot: using an nfs mount to store the key

I've been through this site for a number of LUKS related questions. I've seen methods for storing the LUKS key in plaintext on the root filesystem or on a USB key. My question is: Is there a way ...
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How to install Arch Linux root file system on LVM thin LVs on LUKS on GUID partitioned device?

I'm not able to boot a freshly installed Arch Linux system with its root file system residing on a LVM thinly provisioned logical volume on a LUKS encrypted partition on a GUID partitioned device. ...
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Are big LUKS file containers a bad idea?

I have 150 GB in files to back-up (on an external HDD). Could I just create a 150 GB LUKS container? Or would it be a better idea to create 5x30 GB, or 10x15 GB? Besides making a backup of the header, ...
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Mount error when automounting a LUKS-encrypted USB flashdrive

UPDATE 1: userone@desktop:~$ sudo umount "/media/userone/New Volume" umount: /media/userone/New Volume: mountpoint not found userone@desktop:~$ sudo cryptsetup luksClose /dev/mapper/luks-04cb4ea7-...
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Encrypt casper-rw file for use with Easy2Boot

I have created an Easy2Boot multiboot USB drive. Currently it contains two ISOs - Kali Linux 2016 and Linux Mint. I have created persistent ext2 filestore for both ISOs and configured them using the ...
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81 views

NixOS installation on multi-boot system with GRUB (from Arch installation)

I have one physical disk (/dev/sda) which is divided in /dev/sda1 (which is /boot bootable GRUB2 partition used and setup with Arch) and /dev/sda2 which is my cryptroot that, when unlocked, is a ...
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UUID of LUKS changes when cloned

I am trying to install Centos 7 (under LUKS) on a virtual machine in Fedora 23 using virt-manager and after that to clone that image to multiple USB drives. The problem is that the virtual machine ...
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70 views

Accessing Luks-encrypted disc from FreeBSD

I have some data on a ZFS in a machine running FreeBSD that needs evacuation. I have a disc in a USB enclosure with enough space, but it's encrypted using Luks on a machine running Linux. Is there any ...
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Why is EXT4 on LUKS on MD-RAID6 not detected by openSUSE's YaST

For maximum control over the storage configuration I've got two MD-RAID6 devices pre-configured as follows from openSUSE's Rescue system before rebooting the computer into openSUSE's installation ...
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Debian boot with encrypted disks: RAID is not assembled

Situation I am running Debian 8 on my machine. The disk setup is as follows: # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 55.9G 0 ...
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Dictionary attack GPG symmetric encrypted LUKS keyfile

I remember typing in a long phrase for the password. I wrote all the words I could have possibly used into a plain text file, combining the words I know were used in a certain order. I might have ...
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lvmetad is not active yet, using direct activation during sysinit

I get the following error message at boot, just before being asked for my master password to access to my encrypted hard-drive (using dm-encrypt): lvmetad is not active yet, using direct activation ...
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Changing Debian installer default parameters

I wanna change the default parameters used by the Debian installer, specifically dm-crypt's key size and KDF iterations. "twofish" + "xts-plain64" supports 512bit keys on ArchLinux, so I wanted to ...
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71 views

Do I need boot partition on UEFI & Luks?

I'm trying to install Gentoo on LUKS partition (simple layout - single root partition, without underlying LVM). Right now it works, but I doubt if I done it properly. I've got such a partitions: ...
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RHEL: FDE w/o password - boot from key on partition

I'm trying to accomplish encrypting my OS w/ LVM on RHEL 7.2 and have it boot without entering a password by using a key on an unencrypted partition. LV VG Attr LSize Pool Origin Data% ...
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Initramfs in debootstrap chroot of fully encrypted system

I'm working on a script to create a fully encrypted washable system from debootstrap. It's doing some good, but the initramfs image that comes out does not pick up the cryptroot properly. After ...
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Make changes to busybox/initramfs that are persistent?

I am in the process of recovering my 32-bit Debian Jessie box with a lvm+LUKS disk. I am coming back from a system that had a root partition but no boot partition. Grub executes, but either vmlinuz or ...
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Kernel 4.1.18 doesn't support aes-xts-plain64

My root partition is under a luks crypt and when I type in my password it tells me to make sure my kernel supports aes-xts-plain64 and to check syslog for more info. Obviously I can't check syslog ...
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320 views

Guide for Gentoo setup with full disk encryption using LUKS+LVM

I'm looking for a way to make the following setup happen in Gentoo: /dev/sda1 -> /boot (ext2) /dev/sda2 -> Luks encrypted | +-lvm-vg1 | +- /dev/mapper/root-fs -> / (ext4) +- /dev/...
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How do can I tell what encryption is being used with signed in luks?

What command tells you what encryption is being used by a luks partition (all the relevant information initialization vector generation scheme, mode of operation and block cipher primitive).
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NFS v4 export encrypted partition. Client mounts empty dir

I have an encrypted hard drive on my Lan Server. It was encrypted using luks/dm-crypt. The server has a NFS v4 running to share files in the Lan. It works, except for the encrypted USB hard drive. If ...
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How can I change the password of a LVM setup in Fedora?

Using CLI, how can I change the password of a LUKS/LVM setup in Fedora (2x), where x can be 1,2, or 3? Note: The physical LVM2 volume spans over two partitions on two drives (/dev/sda3 and /dev/sdb1)....
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Automatic unlock LVM partitions with a Key LUKS dm-crypt

I'm trying to make an automatic unlock of other partitions, I have 9 Logical volumes including root, and I know root LVM will unlock manually true password to have a key decrypted. My goal is unlock ...
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Can I make grub go back to the menu when I get the cryptomount passphrase wrong?

I have GRUB 2 (EFI) booting my system, which is dual-boot between Debian 8.2 and Windows 10. The Debian system is on an encrypted partition, which is unlocked using cryptomount. This all works fine ...
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ArchLinux: Error installing grub on encrypted lvm partition(lvm on luks)

I am trying to install Arch Linux on an encrypted partition (LVM on LUKS). I followed the relevant Arch Wiki guide, but when I do: grub-install --recheck /dev/sda it gives me this output: grub-...
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Is it safe to reencrypt unencrypted mdadm array with LUKS?

I would like to convert my raid6 mdadm into encrypted LUKS. Right now raid6 consists of "/dev/sdX1" which are raid partitions. /dev/md0 doesn't have a partition - it is pure ext4 FS. Is it safe to ...
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Combine grub2 + GPT partition + LUKS + LVM (grub overwrites LUKS header)

I'm trying to configure system to boot from one GPT encrypted LVM partition. But when I set partition type to 8300 grub-install complains on warning : this GPT partition label contains no BIOS boot ...
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howto interpret `cryptsetup benchmark` results?

summary: I can run cryptsetup benchmark and sort the results, but seek guidance in their interpretation. E.g., should I give more weight to encryption speed or decryption speed? Should key-derivation ...
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Renumber encrypted partition - sda3 to sda5

I have an encrypted crypt-luks partition that is currently named sda3, and is the last partition on the disk, that is, there are no sda4 or sda5. The encrypted partition contains three logical volumes ...
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66 views

Is plain dm-crypt equal to headerless LUKS?

If I use LUKS encryption provided --header=<file> option, will it be equivalent to using dm-crypt in terms of plausible deniability or will there still be a way to tell that the given partition ...
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Unable to remove stale volume

I have an external hard drive connected to my Ubuntu laptop via USB. The whole hard drive is LUKS encrypted. Next to the encryption layer sits an LVM volume which I mount to /mnt/es. Once opened, ...
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How do I execute a command if a drive is not mounted?

I am trying to create a shell script to mount a LUKS volume if it is not already mounted. The LUKS password will be in the shell script. The shell script is being stored in a encrypted folder so it is ...
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131 views

How do I change a LUKS password?

I would like to change a LUKS password. I want to remove my old password, but I would like to try out my new password before removing the original. I obviously know the old password. I would like to ...
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54 views

Not able to finish setting up LUKS

I am trying to encrypt a new VM with LVM on LUKS. I formatted and partitioned the HD (1 partition). I ran: # cryptsetup -c aes-xts-plain64 -s 512 luksFormat /dev/sda1 /mnt/dok/31.jpg typing "yes"...
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Decrypt a portion of a corrupted drive

I have a hard drive that got corrupted after a doing an MTP mounting of a cell phone. It was created under Fedora Core 20 using defaults. Originally, I thought I did it as an ext4 partition. I ...
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LUKS on an internal hard drive

I have a hard drive which is encrypted using LUKS. It was originally an external hard drive. Recently I removed the casing and connected it directly (via SATA). However, when I connect it directly, I'...
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Massive disk corruption on Ubuntu 15.10 with dm-crypt + LUKS full disk encryption?

I suspect there's a bug in Ubuntu's default whole disk encryption setup. Here's what happens, repeatably: I make a fresh install, Ubuntu 15.10 with whole disk encryption, overwriting the whole disk ...
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What is the proper way to unlock a root filesystem spanning two LUKS devices by only entering the password once, using systemd?

I have been having a lot of issues getting an encrypted multi-disk root filesystem to boot up reliably under systemd on Debian Jessie while only having to enter the password once. Previously I've ...
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270 views

USB key not mounting at boot to unlock LUKS system

I am running Debian Jessie. I have 2 hard drives with my various partitions spread across both (not RAID). Both of them are separately LUKS encrypted, and LVMs sit upon both of those. My /boot ...
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Dropbear terminates before LUKS password prompt on Debian Jessie

I'm trying to use dropbear as a ssh server to unlock an encrypted partition which was created during Debian 8.2 setup. It boots to the password prompt (and unlocks if correct password is typed) but ...
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Udisks2, LUKS and btrfs

I just bought a portable USB HDD,on which i put 2 partitions : a LUKS one, which contains a btrfs fs and a fat32 one, in case I'd have to use a system which doesn't support LUKS or btrfs I use ...
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839 views

Cannot format device /dev/sda4 which is still in use

When I try to LUKS encrypt a partition on a CentOS 7 server using the command cryptsetup -y luksFormat /dev/sda4, the attempt fails with the error Cannot format device /dev/sda4 which is still in use. ...
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Secure deletion on BTRFS in LVM

I have a BTRFS filesystem in an LVM logical volume, which exists inside of a LUKS disk. For reference's sake, let's call the LV lvm-root, and the LUKS disk crypt-root, and the BTRFS filesystem fs-root....