Questions about encryption such as home folder encryption, partition encryption and file encryption.

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8
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3answers
3k views

After new Ubuntu 15.04 installation, startup asks for password even though no disk encryption was set up

I installed a brand new SSD into my laptop and did a fresh install of Ubuntu 15.04, with NO system encryption used (only Home directory encryption). However, it still asks me for a password when ...
0
votes
0answers
9 views

Can't mount encrypted usb stick

I had a truecrypt encrypted usb stick, which I decided to reencrypt in LUKS through disk-utilities. I encrypted it, tested if I can mount it and put all my files on it. However, after a reboot I can't ...
0
votes
0answers
11 views

Keyboard will not work for encrypted login

I'm running Ubuntu 15.04 (Ubuntu gnome). When I start the computer, it shows the gnome logo and asks to enter my encrypted password to unlock the disk. However, I cannot enter the password. Nothing ...
3
votes
1answer
23 views

What is the expected behaviour for ecryptfs?

I am relatively new GNU/Linux user and currently use Xubuntu 14.04 LTS. I have my main user and I also enabled root account (but not used it and root password is setup). I am interested in ecryptfs ...
0
votes
1answer
32 views

Access Encrypted Home Folder

Something happened to my laptop recently and whenever I booted it up, it freezes and my cap locks button blinks. I did a little googling on this and it appears that it is caused due to a kernel panic. ...
0
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0answers
24 views

Please enter passphrase for disk .How to fix it?

I'm using Ubuntu 15.04. I don't know what has happened: when I start and enter the passphrase, this message appears: Please enter passphrase for disk ubuntu--vg-swap_1 (cryptswap1) on none! Please ...
8
votes
1answer
2k views

How do I encrypt my home partition?

With Ubuntu 9.10 I did not have any encrypted partitions set up, I have since installed a fresh Ubuntu 10.04. I have 3 partitions: OS root (/), home and swap. How do I enable encryption on my ...
5
votes
2answers
3k views

How do I access an encrypted home folder from a dual-boot machine?

(This might not be an Ubuntu-specific question?) When I installed 9.10, I opted to encrypt my home folder using ecryptfs, but then I discovered this locked me out of my ext3 partition when I tried to ...
0
votes
1answer
20 views

Ubuntu 14.04 Issues setting up email encryption in Thunderbird with Enigmail

I am having trouble setting up Email Encryption in Thunderbird using Enigmail. I created encryption keys on another Linux machine running Zorin without any issues & exported it to my external hard ...
0
votes
1answer
14 views

Changing home folder encryption after changing user password

When I installed Ubuntu 15.04 I chose to encrypt the home folder. Now I have changed the user password and I can still access the home folder. Does this mean that the home folder encryption key has ...
0
votes
0answers
11 views

Cannot acces encrypted usb drive

So I had a USB stick encrypted by truecrypt but as it isnt supported anymore I decided to reformat it with disk-utilities in LUKS. I overwrote everything and formatted the drive with disk-utilities in ...
0
votes
0answers
13 views

How to mount and use volumes in Ubuntu Server that had been encrypted with Ubuntu Desktop?

I have encrypted all my external disks with the default Ubuntu Desktop 14.04 encryption and I have been sharing them to my home network for a long time without an issue. Recently I decided to go with ...
15
votes
3answers
5k views

Reinstall Ubuntu with encrypted home directory?

I have Ubuntu 10.04 installed with encrypted home directory. /home is on a a separate partition. Can I just boot from a 10.10 CD, reformat / and install as usual? Should it work if I use the same ...
2
votes
0answers
19 views

Encrypted Install of Ubuntu on a SSD and SSD Support for Encryption / Performance

I am looking to purchase a SSD to use as the primary drive on my computer, with the goal of installing Ubuntu (or Linux Mint) with an encrypted hard drive install for security purposes. There's a ...
8
votes
2answers
2k views

How to ensure that wireless Logitech keyboard is encrypted?

Just as the title says, I'm using a wireless Logitech keyboard, and I want to ensure that my keystrokes are in fact encrypted. On Windows, I could do that very easily by using the Logitech SetPoint ...
80
votes
0answers
3k 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
2answers
34 views

Encrypt second hard disk with same password

I installed Ubuntu 14 LTS with disk encryption (selected during installation). I have two questions: 1- What is encryption algorithm of current encrypted disk? 2- I have a second hard disk and I ...
0
votes
0answers
15 views

eCryptfs mount: wrong fs type, bad option, bad superblock

After a stupid I deleted my whole ubuntu system with sudo rm *, and my home folder is encrypted with ecryptfs I recovered 88760 .eCryptfs files. I copied them all at the root of a new folder ...
4
votes
4answers
204 views

I deleted my whole ubuntu system with sudo rm *, and my home folder is encrypted with ecryptfs

I just did sudo rm * and deleted everything. (yes, I know what you think and I agree with you). My SSD is 128G, ubuntu 14.10 was installed on the full partition, using LVM and with the /home ...
1
vote
1answer
35 views

Initramfs + Luks - only one password prompt

What I want to achieve: Being asked for a password, only once during boot time; The other (non-root) partitions to use the keyfile inside the /root/ directory. What I have achieved so far: (A) ...
-1
votes
2answers
153 views

Encrypted SWAP partition creation after ubuntu 15.04 installation, 15.04 installer bugs!

Today I decided to install clean copy of 15.04. Using the installer partitioning tool, I created an encrypted luks system volume, then created an unencrypted SWAP, clicked continue, then got an error ...
10
votes
1answer
1k views

Where is the per-user salt kept?

Where does Ubuntu keep the password salt for each user?
2
votes
0answers
23 views

cryptsetup: unknown fstype, bad password, ect. Bug? Ubuntu 14.04.2

I can't log in to my system at first I had gotten the following error: cryptsetup: unknown fstype, bad password or options? Ubuntu spammed this at boot. Now I can't run the Ubuntu OS ...
0
votes
0answers
14 views

Seahorse: Does “file export” always just exports the public key?

Or in other words: is it always secure to do "File -> Export" in Seahorse and mail this file to a person you want to share data (safely via encryption) with? So Seahorse never includes any crucial / ...
1
vote
1answer
148 views

Cannot enter password to start Ubuntu

I'm running Ubuntu 14.10 with the system disk encrypted with luks. When I start the computer, it shows the Ubuntu logo and asks to enter the password to unlock the disk. However, I cannot enter the ...
0
votes
0answers
34 views

How do I enter my home directory password once [apt-get install, encrypted directory]?

Here is my dilemma: I install a lot of software from the command-line and then I move away from the terminal to do other things. Example: sudo apt-get -y install php5 php5-gd php5-mcrypt openssl ...
0
votes
0answers
97 views

15.04 Swap won't “stay decrypted” (both Disk and Home Directory encrypted)

I just installed Ubuntu 15.04. During installation, I enabled both full disk encryption and home directory encryption. I then proceeded to install several applications. While installing these with ...
7
votes
1answer
3k 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 ...
0
votes
0answers
6 views

On mini Mac, after install of 14.2, the pass-phrase for encrypted drive is not accepted. But also I can not boot from install media anymore

I have checked how to enter my pass phrase with different keyboard-layouts after having read the listed issues with this error. However I still can't get through. I can no longer boot the mac with ...
1
vote
1answer
11 views

Run command on logout, *before* encrypted home is unmounted

I'm running 14.04 LTS with an encrypted home directory. I've got a service (profile-sync-daemon) needs access to files in my home directory when it starts and stops, so needs to start after the ...
0
votes
0answers
2 views

mcrypt encryption 's place for key storage

I am using mcrypt for symmetric encryption in ubuntu and that is working fine. I just want to know that how key used for encryption is generated and where it is stored? I am new with ubuntu so i am ...
0
votes
2answers
39 views

How can I get rid of Ubuntu disk encryption bugs?

When I first installed Ubuntu Studio 14.04 a few months ago, I chose the option for the disk to be encrypted. I have had two issues since then that I believe have to do with it. For a while every ...
6
votes
4answers
822 views

Filesystem that gives an encrypted view of a directory—the inverse of EncFS

Currently I'm using EncFS to encrypt my directory "confidential" to ".encconfidential" and sync that encrypted directory using an online service (e.g. Dropbox, UbuntuOne etc). However my entire disk ...
0
votes
0answers
36 views

How to resize a crypt-luks partition that takes all hard drive?

I want to shrink the partition to be able to install a windows OS, but i installed ubuntu 15.04 with encryption of the logical volume, gparted doesn't support crypt-luks so what do i do?
1
vote
4answers
1k views

unable to unmount encfs encryped folder in cryptkeeper

I have encfs encrypted directory mounted with cryptkeeper. If I try to unmount that directory from Nautilus by pressing "eject" button it will show the following error: "unmount: /home/xxxxx/Encrypted ...
0
votes
0answers
14 views

“Authentication is required to check power state for…” after login from encrypted user

One of the users on my system (Ubuntu 14.04) has an encrypted home directory... after I log out of the encrypted user and log into another unencrypted user, I am getting a series of window asking me ...
0
votes
0answers
7 views

14.04 unable to boot after formatting different primary drive in Acer r7

I have owned my Acer r7 for about a year now and within the first week I installed a 120gb evo msata as a secondary boot drive running ubuntu 14.04. I had setup luks encryption and all partitions ...
2
votes
0answers
23 views

CPU Scheduling incredibly slow with large difference between total execution time and actual CPU time - Ubuntu Full-Disk Encryption enabled

Admittedly, I am running on a build that is no younger than five years old at this point and the system is not going to be incredibly fast. However, at the same time, the run-times I am observing are ...
0
votes
0answers
22 views

Fail to log in to an encrypted home Ubuntu 14.04

As titled, I have problem in logging in to an encrypted home. I have encrypted my home (admin) directory some time ago, so I don't really remember whether I written down the passphrase, but one thing ...
0
votes
1answer
20 views

Access encrypted home directory of one user when I am logged in as another user

On Ubuntu 14.04 I have created an encrypted home directory for a certain user A (with ecryptfs-utils & cryptsetup). However I am usually logged in as another user B. When I am logged in as user B, ...
5
votes
1answer
684 views

Yubikey Two-factor Authentication Full-disk Encryption via LUKS

I recently acquired a Yubikey Neo - a nifty little hardware second factor authentication device. It's primarily intended for use with One Time Passwords, and the emerging U2F protocol - but since ...
0
votes
0answers
26 views

Linux full disk encryption password prompt completely unreadable

After a few updates ago , my computer as it boots up and asks for the hard disk encryption passphrase the menu is completely unreadable. This doesn't bother me too much, but I am curious if there is a ...
2
votes
4answers
7k views

Can't install alternate CD from USB?

I'm trying to install Ubuntu 12.04 with full hard disk encryption. After downloading and installing the Ubuntu live CD, I learned that truecrypt doesn't support full disk encryption on Linux. I also ...
1
vote
1answer
48 views

Massive filesystem corruption after latest update on LUKS encrypted drive

I booted my machine this morning and was greeted by a busybox shell. I booted from a live USB, mounted the drive with cryptsetup, but when I try to open it it says my ubunutu--root-vg has an ...
1
vote
0answers
17 views

Cannot create user with auto-mounted encrypted home dir in Ubuntu 14.04.2 LTS desktop

I set up a machine with 14.04.2 and used the encrypted homedir option, which works fine from the installer. I went to move some stuff around, and ended up re-installling. I have been trying to create ...
1
vote
0answers
14 views

Create exact copy of compact flash with encryption with dd

I have a touchscreen system that's using some sort of encryption on a compact flash card to run it's OS. The card died, but I have access to identical machines. But when I try to copy the cf with DD ...
16
votes
4answers
8k views

How do I recover my data from an encrypted home directory?

I have a big problem. When I made a upgrade from 10.10 to 11.04 I lost all my data in home directory. I have only data from my home encrypted directory. What can I do? Thanks Martin
2
votes
2answers
46 views

How can I increase size of boot partition, if I have an encrypted home partition?

Installed Ubuntu as a first-time user about two months ago. Has been working great until two weeks ago, when updates would no longer install due to not enough room on the boot disk. I did the "sudo ...
8
votes
2answers
12k views

What are the advantages/disadvantages of the new encryption feature in ubuntu 13.10

I'm in the middle of installing 13.10 and the Ubuntu page I was following on how to install from a USB stick says nothing about these two choices (on the Installation type screen): 1) Encrypt the ...
-1
votes
0answers
23 views

Remove Disk encryption

Can I remove Disk encryption? I am trying to install a theme in the /usr/share/themes directory, and I can't put extract the theme there because "Access in denied"