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

learn more… | top users | synonyms (1)

54
votes
5answers
89k views

How do I quickly encrypt a file with AES?

I want to encrypt a file using AES-256. How can I do that quickly and easily, and how can I - or someone else -decrypt it again?
0
votes
1answer
26 views

Help to recover personal files from encrypted Home folder, Im on USB live USB

I need help to recover my files from "Home" in an encrypted partition with Ubunu 14.02 (I went with the encryption option from the installation). I couldn't boot normally on that system (normally ...
1
vote
0answers
89 views
+100

How to use snapshots with BTRFS in Ubuntu along with a separate HOME partition

My goal is to make snapshots while upgrading software. I installed Ubuntu in LVM partitioning with a separate HOME partition in another HDD formatted in XFS ("/" in BTRFS), but I'm trying to follow ...
1
vote
1answer
20 views

Grub 2 crypto modules prompt issue

I am using grub2 on an mbr disk (not EFI) to boot Xubuntu 16.04. I have sort of a specialized setup, as follows: /dev/sda - MBR - Grub2 installed /dev/sda1 - ext2 - /mnt/boot /dev/sda2 - extended ...
0
votes
1answer
23 views

Can (or should) a script perform a login?

I have a nightly process that SFTPs files from a Windows server to our Unbuntu server (12.04.5 LTS) using my username and login. A script is setup via cron (sudo crontab -e) runs later to copy those ...
2
votes
5answers
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 ...
0
votes
0answers
12 views

Pre-Login launch of Synergy in encrypted form

I can't find any answer how to start encrypted synergy connection pre and post login screen of my Linux installation. I can run unencrypted connection when I set my server to use non-encrypted ...
0
votes
0answers
14 views

Full disc encryption key

When selecting a full disc encryption during install ubuntu encrypts the disc, but never offers option to set enc. key? Is this done automatically? Also when enc. passphrase is later changed what ...
-1
votes
0answers
24 views

mount: No such file or directory with encrypted recovery [on hold]

I have destroyed my Mint Linux installation. I just wanted access to my remote storefront. So what happened was I was having trouble with ICEauthority file in my home directory. So following ...
1
vote
1answer
60 views

Cannot reboot or poweroff Ubuntu 16.04

Ubuntu 16.04 kernel 4.5.4-040504-generic Whenever I try to reboot or power off I receive: Failed to power off system via logind: Transaction is destructive. This began at the same time that I ...
1
vote
0answers
122 views

Ubuntu-Phone - SIP/VOIP

On some dev notes I read about that this was beeing tested. How far are we on this and will it be added. A native SIP client would be very interesting as Ubuntu-Phone would be the only open OS, ...
1
vote
1answer
20 views

How do I update shadow file password hashes after changing the encryption method?

I had gone through with this link. Suppose my current-encr is SHA-512, SHA-256, or another, the password hash would be stored (in /etc/shadow) of the user based on the current encr and would use ...
0
votes
0answers
45 views

Installing Ubuntu 16.04 with home encryption on a NVMe SSD

On a Thinkpad X1 Carbon 4th Generation installing Ubuntu 16.04 with home encryption enabled I ran into the same problem as described here: After new Ubuntu 15.04 installation, startup asks for ...
0
votes
1answer
30 views

Select PGP signature key in KMail

I have just generated a new PGP key pair with KGpg. I want to use the key for signing and encrypting mails. I have done that before without problems ... now it no longer works. Either I have made a ...
1
vote
0answers
15 views

Why enter passphrase for cryptswap?

After some moving of partitions, my Ubuntu Mate still boots, but strangely it asks for a passphrase for the cryptswap1 volume. I don’t enter anything and hit enter and it works. As I understand it, ...
2
votes
1answer
11k views

installing ubuntu with full disk encryption including encrpyted boot on i-USB Pendrive ii-A regular HDD

Hi how to install Ubuntu 12.04+ with full disk encryption including encrypted boot partition : a- to a USB drive ie. 16GB or 32GB b- to a HDD
0
votes
3answers
1k views

Can't boot: “mdadm: CREATE group disk not found”

After running apt-get upgrade yesterday and shutting down, I'm no longer able to boot Ubuntu 15. The last several lines I see during boot are: Begin: Running /scripts/init-premount ... done. Begin: ...
0
votes
0answers
39 views

Decrypt home directory using mount pasphrase - files still encrypted

I am trying to recover data from an Ubuntu installation with an encrypted home directory mounted on a separate partition /dev/sda1. I don't have the login passphrase, but I do have the original mount ...
2
votes
0answers
60 views

Can't restore encrypted backup created with 10.04's deja-dup on 14.04 [closed]

I ran a Deja-Dup backup on an Ubuntu 10.04 LTS machine. It was an older version of Deja-Dup that came with 10.04 LTS. I password protected it. Then I installed 14.04.3 LTS Trusty Tahr from the 'Try ...
4
votes
3answers
520 views

Is the lock screen secure enough to prevent “Mallory” from accessing the encrypted drive?

I use truecrypt to encrypt one of my drives and I would want to leave the computer running processes that use information of that drive while I'm not home, I've tried suspending it but everything ...
6
votes
1answer
2k 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 ...
1
vote
0answers
50 views

Asus E200H, keyboard does not work for entering encryption password

For the disk encryption password, I cannot type anything and the keyboard/mouse doesn't work. I've tried the options i8042.nomux=1 i8042.reset to no luck. With the option nosplash, I see this: [ ...
0
votes
1answer
24 views

Ubuntu 14.04 full disk encryption

I would like to use full disk encryption on the existing installed ubuntu 14.04 machine, please guide me on how I can achieve that. Regards, Kranthi
0
votes
1answer
30 views

Common protected (Encrypted) partition for both Windows and Ubuntu

I have installed Windows 10 and Ubuntu 16.04 on my hard drive. I like to encrypt a common partition which will be available for both Windows and Ubuntu. When I was using Windows as my only Operating ...
11
votes
2answers
5k 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
1answer
38 views

Back-up utility endlessly asks for encryption password

I am running Ubuntu 14.04 LTS updated today. As I tried to start the scheduled back-up (on an external drive), the dialogue box asked me the encryption password endlessly and never proceeded to ...
2
votes
3answers
2k views

how to use ecryptfs with a random directory

I would like to use ecryptfs to encrypt a random directory (i.e., not my home directory or a subdirectory thereof, principally due to disk space limitations on my home partition) and mount that ...
5
votes
3answers
190 views

How do I add myself back in sudo group in Encrypted HDD of 16.04 with Strict Security Policies?

I know the threads How do I add myself back as a sudo user?, Mounting encrypted LUKS partition from Live CD, ... This thread is about how to add a sudo user back without root and other strict security ...
2
votes
0answers
370 views

Ubuntu full disk encryption with encrypted /boot

I'm trying to setup a full encrypted disk with a separate /boot partition and I'm having some troubles. I'll write down the procedure I've been following on a Ubuntu 15.04 Live DVD session. Fill ...
14
votes
4answers
15k views

How do I mount an encrypted /home directory on another Ubuntu machine?

I've done something a bit, well, strange. I installed Ubuntu 12.04 directly onto a USB thumb stick, encrypting the /home directory as given the option during the install. The filesystem is btrfs, I ...
4
votes
3answers
755 views

What is the proper way to install Ubuntu 15.04 with LVM, LUKS, and manual partitioning?

I am trying to install Xubuntu 15.04 with LVM and LUKS, manually partitioning in order to have a separate /home partition. So far I have booted the Xubuntu live CD and went through these steps: ...
0
votes
0answers
409 views

Dual Boot Ubuntu 16.04 w/ Full Disk Encryption + Win10 not encrypted (separate HDDs) Help

EDIT: Making this question a lot simpler. Hello everyone, I have 4 HDDs: 60GB SSD 500GB HDD - Win10 installed 1 TB HDD (x2) As you can see, the 500GB HDD has Win10 installed on it. The other ...
0
votes
4answers
331 views

Windows disappeared after installing Ubuntu encrypted

My problem is I lost Windows after reinstalling Ubuntu 14.04, because I reinstalled Ubuntu using encryption. From the beginning: 1) When I bought this laptop Windows 8 was already installed. 2) I ...
1
vote
0answers
16 views

Fresh install encrypted all my data

I was runing an old version of ubuntu (15.10) and I decided to perform a fresh install of the last LTS version 16.04. Under 15.10, I had a user (rz) with all my personnal data. I installed the ...
0
votes
0answers
11 views

Recovering home partition in 15.10 on computer that fails to boot successfully

I have an encrypted home directory on a computer that fails to boot into 15.10. It just takes me to initramfs. I'm wondering how to recover these files. I was thinking of simply installing a fresh ...
2
votes
2answers
2k views

Grub2 on hard drive chainload grub2 on USB

I'm taking steps to secure my laptop - from both a data security and physical security point of view. I currently have full disk encryption with LUKS set up through the installer - this is pretty ...
6
votes
1answer
3k views

How do you encrypt and decrypt files using your keychain?

Remember this little guy over here? He's no longer with us in Ubuntu 11.10. Now, a friend's sent me an encrypted file using a public key I think I have the key for in my keychain. How can I decrypt ...
0
votes
1answer
102 views

Remove Bitlocker encryption on Ubuntu 16.04

How to access bitlocker encrypted drive in Ubuntu 16.04? Dislocker utility worked in 14.04 but a package which dislocker depends libpolarssl is missing in 16.04. Is there any workaround or any other ...
9
votes
1answer
3k views

Are there any known vulnerabilities to Ubuntu's full disk encryption feature?

Are there any known vulnerabilities to Ubuntu's full disk encryption feature? I have some storage devices (thumbdrive and a few external hard drives used for backups) that I use with full disk ...
2
votes
0answers
562 views

black screen on Ubuntu 16.04

I recently upgraded to Ubuntu 16.04 from 15.10. When I restarted the system, it came up with a black screen. After searching around, I determined that the problem was with the lack of a proper ...
0
votes
0answers
29 views

Enter passphrase for disc “cryptswap1” turning off failed

I have Ubuntu Gnome 16.04 and I just want to remove entering the passphrase for disc after booting. I used this answer for do it, but now my computer do not want to start. Thanks for help in advance.
1
vote
0answers
50 views

How is Ubuntu 16.04's Whole-Media Encryption done?

I would like to have an Encrypted whole-media Persistent Live USB Ubuntu 16.04. I can create a persistent live Ubuntu 16.04 as described in the thread How to Make Persistent Live Ubuntu of 16.04? ...
0
votes
0answers
34 views

Freshly installed Ubuntu boots into initramfs

a few days ago I installed Linux Mint but had no luck getting wifi working so I switched over to Kubuntu. Everything was working fine and finally after some days of tweaking I had everything setup ...
0
votes
1answer
27 views

Do WD HDDs work with Linux?

I'm planning on my first pc build and have decided to use a WD Blue WD10EZEX 1TB as hard drive. I've heard someone say that this drive had an encryption that made it useless with Linux. Is this true, ...
0
votes
0answers
19 views

Can I create a hidden encrypted operating system?

I was planning to use TrueCrypt to create a hidden encrypted OS. Unfortunately, after I installed Ubuntu 14.02 and installed Truecrypt 7.1a, I realised that Ubuntu doesn't support the encryption of a ...
0
votes
1answer
11 views

Dual boot encryption

I want to encrypt my dual boot system. New installation (not installed now) of ubuntu with standard encryption and current windows system with veracrypt. My problem is that i can only create 4 primary ...
8
votes
0answers
88 views

How do I preseed encrypting just the root partition?

I have 3 partitions: EFI (/boot/efi), boot (/boot) and root (/). I want to encrypt just /. I can do this manually via the installer, but I want to preseed it. How do I define it? My (non-encrypted) ...
1
vote
1answer
51 views

Changed password - now can't login to my account (full disk encyption + encrypted home folder)

So I'm running Ubuntu 15.10. I have full disk encryption setup and an encrypted home folder, I realize this is stupid but I didn't realize what I choose when I set it up and never bothered to try and ...
1
vote
1answer
60 views

Remove string “please enter passpharase for disk…”

I traveled to Australia it seems they didn't like my face or I looked suspicious since they made me turn on my laptop and when ubuntu encryption password popped up they asked me for it, nothing to ...
0
votes
2answers
22 views

How much extra storage space does eCryptFS use?

I'm thinking of using eCryptFS, but I wanted to know how much more disk space is used.