Security :: Change Login Passphrase (to Unlock Encrypted Home Directory)
Nov 21, 2010
I just installed the testing version of Debian with the option to setup encrypted home directories. I used a passphrase that I now want to change to something else. How do I do that?
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Nov 13, 2010
I've just reinstalled my box with an encrypted home (used the encrypt home option when installing). I have a query in this regard - suppose I lose the box. Won't it be possible for someone to drop into root, reset my passwd and then access my /home. Is there anyway of having a different passwd for accessing /home? My ~ is on a different partition from /.
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Jan 3, 2010
Not using filename encryption when you create a new encrypted folder is easy, but how to disable it in the home encryption that is automatically set up by the Karmic installation CD?
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Jul 20, 2011
I am running ubuntu 11.04 I'd like to encrypt my home folder. - how can it be done, without creating new user/starting from scratch. -I'd like to keep all the files and desktop settings - the only change should be that the folder is encrypted now.
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Aug 17, 2010
Lately i just reformatted my laptop again and created a encrypted home drive using the default.It prompt for my password and then i key it into the terminal.Then the terminal closed it.How to justify that the home drive is encrypted and decrypted during login?Beside that,if it is encrypted and what kinda extension is drive gonna?Apart from that,i used cryptkeeper to create a encrypted folder.How do i know if the folder is encrypted beside it prompt for me to enter my password?
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Sep 20, 2010
Hello everI'm really confused by the ways an encrypted partition get mounted.It just mounts the partition without asking for the passphrase used to create it. I can list the files in /mnt/sda2, create a new file test.txt, but have no access to the files written to the "real encrypted partition".Then I can see/change the content of the encrypted partition but without being able to see/change the file test.txt created previously with the normal mount command.
The reason I'm asking is that I'm having my custom Debian to automount every partition available on the system at boot time. Is there any way/command to tell if a particular partition is encrypted (by cryptsetup) or not? So that I can mount it the right way and not make the users confused (or even harm the encrypted data).
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Feb 23, 2011
I've chosen to encrypt my swap partition while I was installing opensuse 11.3 on my PC.
I want to know how I can change its password(passphrase)?
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May 3, 2010
I recently installed Ubunutu 10.04 Netbook Remix onto a Dell Vostro A90. During install I selected "Require my password to log in and to decrypt my home folder", and this is working great.
What I would like to figure out, is how to have a second encrypted volume that lives on my SD Card that is also decrypted automatically upon login.
I've tried a variety of things, but they all require me to re-enter my password at some point during the boot/login, once for user login and the other time to decrypt/mount the volume. I am trying to avoid this, and hopefully will only have to enter my password once. Maybe I can piggyback on the default Ubunutu home directory decryption and make it all appear seamless?
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May 20, 2010
Anyone had any experience with unlocking a LUKS encrypted root partition via ssh? It is ok to leave /boot unencrypted.
There are a few pages from google with the debians variants, archived by putting dropbear into initrd.
I like to do that with my fedora/centos remote servers, but struggle to find any resources specific to it. Anyone has any suggestions and thoughts as to what might be a suitable way forward?
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May 26, 2010
I can't log in to my current install of 10.04 (x server doesn't start, or whatever, not too concerned about that), and I would like to at least get my files from my home directory, but most of them are inaccessible when I boot up with my LiveUSB of 10.04, due to permissions, I suppose. Is there an easy way to get them? I know the password to my log in,
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Jul 31, 2011
Is there a way to change the passphrase login screen? It would be cool to change the background and edit the text?
text : Cryptsetup: evms_activate is not avaible
Unlocking the disk /dev/blablablabla
enter passprase
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Aug 26, 2010
I have Ubuntu Karmic. I chose to install with an encrypted home directory. Recently I got a warning that I only had 2GB of drive space left. This is mostly because of my videos. So I went and bought a new hard drive and partitioned it and made 1 ext4 partition and copied my videos all to the new hard drive. I added a line in my fstab to mount the new hard drive to ~/videos, but when I reboot the computer, there is a screen saying something like "error mounting /home/me/videos, press S to skip or something else to reboot". If I press S to skip, then when my system comes up there is a video directory but it's empty because my other hard drive didn't get mounted. I can run sudo mount /dev/sdb video/ and it will mount fine and I can see all my videos, so why can't fstab mount it? Does this have something to do with my encrypted home directory?
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Apr 4, 2011
How to change the passphrase for crypted partitions in F14?
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Jul 15, 2010
I installed 4 encrypted partitions (/, /var, /tmp, and swap) that are mounted at boot using the Alternate Installation Disc, and they all have the same password, but I have to type that password in 4 times when booting up. How do I make it so I only need to type in my password once?
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Oct 11, 2010
I have a problem where I am asked to unlock the keyring every time I use Evolution.I enter my password on the user select screen and login and have evolution save my email password but whenever I open the program it asks for the same password as I use to login. For security reasons I need to have my password requested at login but don't feel I need it for evolution as I thought my email password was enough.
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Aug 5, 2010
When lauching gdmsetup I can't unlock it to change settings. nothing happens when clicking on "lock" button
the same problem in Ubuntu Software Center 2.0.7. nothing happens when I pull "Install"
(no authorization starts)
there are no authorization window in admin-shares too
It started when I have changed the type of ubuntu login - I have changed from gdmsetup settings from "password" to automatic authorization.
I checked the the PolicyKit Agent. It seems to working (and autostarting) with such command:
/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1
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Jul 7, 2011
I installed Ubuntu Server because I want to learn Linux and I want to learn about servers. I did a newbie tutorial and then shut down. When I booted up today, the files in my home directory were replaced by Access-your-private-data.desktop and readme.txt, but I have no idea why. I followed the instructions in readme.txt and typed ecryptfs-mount-private. It told me
INFO: Your private directory has been mounted.
INFO: To see this change in your current shell:
cd /home/rmob
But if I do ls /home/rmob, it still shows me Access-your-private-data.desktop and readme.txt instead of the files I created there yesterday. Every time I reboot, it tells me
keyctl_search: Required key not available
Perhaps try the interactive 'ecryptfs-mount-private'
If I try ecryptfs-mount-private again, it still tells me it has mounted it, but still just shows me those same two files. Googling about this tells me this means the directory got encrypted somehow. I tried typing touch ~/.ecryptfs/auto-mount which I found in this tutorial, but it didn't make a difference and I can't find any other solution anywhere.
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May 21, 2010
I ran fsck on the wrong partition (which was mounted) and in my haste blew up the file system on that partition. Now here's the kicker, I had 450Gb of data and documents on that partition that was in an encrypted home directory. So the long and the short of it I ran fsck again and I was able to recover all the files, and they are now residing on a Lost+Found folder on my hard drive.I have located the encrypted files, but I don't know what to do with them.
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Oct 5, 2010
I am trying to open an encrypted home directory from opensuse 11.2 with opensuse 11.3. This means i have a user.img and a user.key So far i have done:
losetup /dev/loop3 user.img
cryptsetup luksOpen /dev/loop3 home
Enter passphrase for /dev/loop3:
No key available with this passphrase. At this point it will not accept my passphrase.
A luksDump reveals:
cryptsetup luksDump /dev/loop3
LUKS header information for /dev/loop3
[code]....
When i try to use the key file, i get:
cryptsetup luksOpen /dev/loop3 home --key-file home.key No key available with this passphrase.
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Dec 12, 2010
I am having a problem setting up an encrypted home directory with openSUSE 11.3. I used Yast User and Group Management to edit an existing user to encrypt the home directory and the user.key and user.img files were created in the /home directory. I tried it out and logged in as user and created a new file. I logged out and logged in as a different user and was able to see the newly created file in the first users home directory.
I figured I did something wrong so I went back to Yast and deleted the user. I deleted the /home/user directory using file manager su mode. I tried again to create a new user with an encrypted home directory using Yast and now when Yast tries to write the changes I get an error: "pam_mount is already setup for user. Use --replace to replace the
existing entry." I do not know how to proceed from here except to try with a different user name as I do not understand what the error message means and what command to use --replace with.
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Apr 21, 2010
I tried upgrading to 10.04, and now when it boots it just goes into a grub2 terminal and doesn't display a boot menu. I tried re-installing grub2 from the live cd, but that didn't do anything. I figured if I've hosed the last install I'll install from scratch, but I can't even access my files from the live cd! I did a bit of searching and everyone seems to just encrypt ~/Private, whereas I've encrypted the whole home directory. So much for security... In the live cd, it has a readme.txt and says to type "ecryptfs-mount-private" to access the files, but it just gives the error "ERROR: Encrypted private directory is not setup properly". What do I do?
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Jun 7, 2010
my CPU passed away, got a new system, installed a new 9.04 and blew it up to studio. have 2 new disks and my old raid 0 lvm. mounted is ( lvdisplay) , user rights fixed fine. I do have my old login name and passwd in a book. How can I open the data it was the old encrypted home directory. I have an icon "Acess your private Data" and something called link to Acess Your private data. There I can read link (broken) so the broke link is sorted out, as i do have now a directory in my home with the same name as it has been, /home/coconews/ and that is fine
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Jun 18, 2010
Ubuntu 10.04 (64)I have a second drive (currently mounted as /disk2).I want my home directory (/home/jb) to include this second disk as JUST a separate 'folder' accessible from my home area.want the data on the second disk to be encrypted, (just like my /home/jb folder is now).I would prefer to 'blend' the second drive into my existing setup.I'm looking for the safest way to achieve this, don't mind editing fstab etc. or getting my hands dirty on the cli.
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Mar 15, 2010
During the installation of Ubuntu Karmic, I picked the option that encrypts my home directory.
A few questions:
(1) Shortly after installation, I was asked to run a command to print a key necessary for data recovery from a rescue CD. I didn't run it at the time and am now looking for the command to run. What is it?
(2) I think I read somewhere that this also encrypts swap. Great. Correct me if that's wrong.
(3) If I suspend the machine, is my home directory encrypted? That is, if I have this on a laptop and travel with the suspended laptop and someone steals it, are my data safe, or not?
(4) I assume the weakest point in the system is my relatively short login password (but I think the install tests it and found it okay). Is there a recommendation how long this should be?
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Nov 7, 2010
Apparently after an upgrade, I lost access to my encrypted home directory. Looks like upgrade scripts changed the scripts that mounted my encrypted home directory. As I don't have my ecryptfs password handy, is there any way to revert the things back as they were? I have liked Ubuntu all the way but after this upgrade-mess-up, I might change my view.
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Jun 6, 2011
I had errors pop up when I tried updating my 10.10 to 11.04 so I ended up having to do it from a Live USB which installs it over everything (fine by me).Unfortunately I forgot I had an encrypted /home directory. So various messages and stuff came up when I tried to log in.nfortunately I don't remember what my encryption passphrase is offhand, so I moved it to a slightly different folder name and had to have a new directory created for my username.It's still there, but how can I try to open it trying the various versions of the passphrase I think it may be? Can I double-click it and try?Also, in the future what is the best way to handle a "fresh" install that I want to connect to my encrypted /home directory?
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Mar 9, 2010
I just installed 9.10 on my laptop and selected the option for home folder encryption. I am running DropBox and placed the DropBox folder on my desktop (meaning it should be encrypted when I am logged out.) So I have two questions:
1) Shouldn't this setup cause my DropBox files on the server to be encrypted? Apparently they are not because they appear as unencrypted text using the DropBox Web interface.
2) If they were encrypted on the server (which doesn't appear to be the case right now), how would it be possible to share them with another client unless the encryption on both clients were set up identically?
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Apr 26, 2010
While setting up my laptop on a new hard drive (a bad mobo caused writes which pretty much rendered teh old hdd unusable) I was asked if I wanted to encrypt my home partition.
I've been wanting this for several years - even going as far as trying to get a copy of CheckPoint. That's waht my organization uses on all Wintendo laptops and is required.
In any case, I said "yes" and am happily using my laptop with an encrypted home partition. I'm assuming based on this - [URL] - that it is using EncryptFS as the scheme.
if I were to misplace my laptop, how easy would it be for a forensics team to retrieve my data. Let's assume I have a fairly strong passphrase, such as BisZumBitterenEnd3. [URL]
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May 3, 2010
I had some major problems after the recent Ubuntu upgrade and had to boot from a live cd. I have a separate /home partition, but it was encrypted using the default install encryption in the 9.10 install cd. How can I get to my files so I can back them up?
I have tried this but it did not work: http://ubuntuforums.org/showthread.php?t=1337693
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Jun 11, 2010
I'm using 10.04 with encrypted home dir. I think the behavior below is wrong:
I can log in as root and change user's password. After that the user can log in using new password, which is normal, but it can also decrypt its home dir using the new password, which is dangerous. Assume I lost my computer. This encrypted home dir will not protect my private data because whoever gets the computer can boot it up with a livecd and chroot to change my user's password and then boot up my system and log in using new password.
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