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

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1answer
40 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
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0answers
35 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, ...
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3answers
2k 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: ...
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0answers
73 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
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0answers
70 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
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3answers
547 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
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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 ...
0
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1answer
34 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
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1answer
54 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 ...
12
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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
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1answer
49 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 ...
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3answers
3k 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 ...
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4answers
16k 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
884 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: ...
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0answers
798 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
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4answers
378 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 ...
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0answers
19 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 16....
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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 ...
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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 ...
7
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 ...
9
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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
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0answers
1k 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 ...
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0answers
42 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.
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0answers
42 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
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1answer
39 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, ...
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0answers
23 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
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1answer
20 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 ...
10
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0answers
163 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
74 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
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1answer
72 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 ...
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2answers
39 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.
0
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0answers
92 views

How to use TRIM on encrypted home folder

I've installed Ubuntu 16.04 LTS. During the installation, I've checked 'encrypted home' but home folder is in the same partition as the root (i.e in '/'). I know that the usage of TRIM on LUKS devices ...
3
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2answers
371 views

Can VeraCrypt use persistent mount points on Linux?

Can VeraCrypt use persistent mount points on Linux? Windows + VeraCrypt + encrypted volume absolute paths On Windows I can mount veracrypt encrypted partitions/disks via batch script which employs ...
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0answers
119 views

Installing in encrypted partition under EFI boot

I've been googleing for a bit and can not find an answer yet Im from a FreeBSD background, so you will have to forgive me a little I am trying to dual boot FreeBSD and Ubuntu I want to set up a ...
0
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0answers
172 views

Lubuntu 16.04LTS can't install because of unencrypted swap

I have now been struggling for days trying to install Lubuntu 16.04LTS. I have a 1.5TB drive and a 2TB drive. The 2TB drive fails consistently saying it cannot close the drive. Perhaps there is ...
2
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0answers
82 views

Encrypted LVM Disk Password not “in box”

After a recent installation of Kubuntu 15.04 using encrypted LVM, I have the following problem. When I boot the system, the pretty Kubuntu encrypted disk password screen appears, but when I type the ...
4
votes
4answers
179 views

How does FDE (Full Disk Encryption) work so quickly?

I'm curious about how does Ubuntu's full disk encryption works under the hood. Here's an example: Considering the following string as all the disk's content: hello world After applying some kind ...
0
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1answer
1k 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?
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0answers
24 views

Ubuntu doesn't prompt for disk password when booting

I have an Arch partition installed on a LVM volume. It corresponding physical volume is in an encrypted partition (I used cryptsetup to do this). I installed Ubuntu Studio 15.10 in another logical ...
1
vote
1answer
991 views

How to revert from using an encrypted home partition?

I tried to delete ecryptfs from my computer so I wrote in the terminal $ PRIVATE=`cat ~/.ecryptfs/Private.mnt 2>/dev/null || echo $HOME/Private` $ ecryptfs-umount-private and now my home folder ...
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0answers
24 views

Support for psafe3 on ubuntu-touch?

The psafe file format for providing an encrypted password database has been an essential tool to me for several years. One of the best things about this is the wide number of platforms where ports ...
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1answer
18 views

USB Security by Encrypt.com - where do i purchase this ap? (The instructions say it has never been hacked?)

I have a Lexar usb stick with Encrypt technology. Lexar said I had to purchase for like $12.99 software to use the USB stick, as it is so good apparently that it has never been hacked according to ...
0
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0answers
92 views

Encrypted home partition (btrfs) and trim stories

I am a new Linux user, i downgraded from 16.04 to 15.10 yesterday. I am using 4 partitions (efi,swap,/,/home) / and /home are formatted with btrfs. NAME FSTYPE SIZE MOUNTPOINT LABEL sda ...
0
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1answer
103 views

Remove bitlocker encryption using ubuntu

I can access the drive using dislocker but I want to remove the encryption. I have migrated from Windows 10 to ubuntu 14.04 so I can't remove it using Windows.
2
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2answers
2k views

Unable to ssh remote unlock encrypted ubuntu server 15.04 using dropbear/initramfs

So I'm trying to set up a brand new Ubuntu 15.04 headless server with full disk encryption and remote unlock capabilities. I've done this successfully on a raspberry pi running Raspbian-Wheezy, and ...
2
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4answers
6k views

Why encrypt the swap partition

I have seen on this site that many Linux users encrypt the swap partition. What are the benefits of encrypting swap?
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2answers
33 views

Encrypted SSD - Disk usage

I have a SSD in my laptop, only a small one 128GB. Its also encrypted. I am running out of space, used something like 99.1% of space. When I try to check the disk usage I can only see the encrypted ...
0
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1answer
36 views

Boot without password, but still have encrypted partitions

I'm trying to set up a server with encrypted (and non-encrypted) partitions, but would prefer not to need physical access to reboot it (it being a server and all). Is there a way to set up the ...
2
votes
1answer
270 views

How to get rid of encrypted swap?

I recently installed Ubuntu 12.04, including a encrypted root and swap partition. I'd like to get rid of the encrypted swap partition (not just of the encryption for it, but of the whole swap ...
1
vote
1answer
58 views

How can I encrypt my pendrive with password? [duplicate]

In windows 7 or windows 8, I can use BitLocker Drive Encryption to encrypt and set a password in my pendrive but i am unable to access files of my pendrive in Ubuntu. Is there is any method to ...